./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi003_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi003_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:22:01,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:22:01,248 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:22:01,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:22:01,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:22:01,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:22:01,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:22:01,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:22:01,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:22:01,277 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:22:01,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:22:01,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:22:01,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:22:01,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:22:01,279 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:22:01,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:22:01,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:22:01,280 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:22:01,280 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:22:01,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:22:01,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:22:01,285 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:22:01,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:22:01,286 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:22:01,289 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:22:01,289 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:22:01,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:22:01,290 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:22:01,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:22:01,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:22:01,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:22:01,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:22:01,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:22:01,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:22:01,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:22:01,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:22:01,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:22:01,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:22:01,293 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:22:01,293 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:22:01,294 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:22:01,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:22:01,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:22:01,294 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:22:01,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:22:01,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:22:01,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:22:01,676 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:22:01,677 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:22:01,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-28 02:22:02,749 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:22:02,942 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:22:02,942 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-28 02:22:02,959 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c99b8a56/122784999db84f799f2be3aa28377ed7/FLAG5d5970506 [2024-06-28 02:22:02,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c99b8a56/122784999db84f799f2be3aa28377ed7 [2024-06-28 02:22:02,973 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:22:02,974 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:22:02,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi003_tso.yml/witness.yml [2024-06-28 02:22:03,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:22:03,096 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:22:03,097 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:22:03,097 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:22:03,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:22:03,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:22:02" (1/2) ... [2024-06-28 02:22:03,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e29028f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03, skipping insertion in model container [2024-06-28 02:22:03,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:22:02" (1/2) ... [2024-06-28 02:22:03,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28a5ceba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03, skipping insertion in model container [2024-06-28 02:22:03,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:03" (2/2) ... [2024-06-28 02:22:03,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e29028f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03, skipping insertion in model container [2024-06-28 02:22:03,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:03" (2/2) ... [2024-06-28 02:22:03,107 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:22:03,182 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:22:03,183 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:22:03,183 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:22:03,183 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:22:03,184 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-28 02:22:03,206 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:22:03,548 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:22:03,565 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:22:03,666 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:22:03,694 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:22:03,696 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03 WrapperNode [2024-06-28 02:22:03,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:22:03,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:22:03,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:22:03,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:22:03,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,772 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 177 [2024-06-28 02:22:03,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:22:03,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:22:03,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:22:03,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:22:03,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,786 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,806 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:22:03,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:22:03,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:22:03,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:22:03,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:22:03,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:22:03,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:22:03,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:22:03,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:22:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:22:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:22:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:22:03,874 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:22:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:22:03,874 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:22:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:22:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:22:03,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:22:03,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:22:03,876 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:22:03,964 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:22:03,966 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:22:04,275 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:22:04,276 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:22:04,464 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:22:04,464 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:22:04,467 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:22:04 BoogieIcfgContainer [2024-06-28 02:22:04,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:22:04,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:22:04,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:22:04,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:22:04,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:22:02" (1/4) ... [2024-06-28 02:22:04,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bf44d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:22:04, skipping insertion in model container [2024-06-28 02:22:04,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:03" (2/4) ... [2024-06-28 02:22:04,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bf44d2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:22:04, skipping insertion in model container [2024-06-28 02:22:04,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (3/4) ... [2024-06-28 02:22:04,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bf44d2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:22:04, skipping insertion in model container [2024-06-28 02:22:04,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:22:04" (4/4) ... [2024-06-28 02:22:04,479 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-06-28 02:22:04,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:22:04,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:22:04,493 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:22:04,527 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:22:04,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 02:22:04,569 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-28 02:22:04,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:22:04,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:22:04,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 02:22:04,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-28 02:22:04,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:22:04,584 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e08db81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:22:04,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:22:04,587 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:22:04,587 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:22:04,623 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:22:04,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:04,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:22:04,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:04,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash 410284939, now seen corresponding path program 1 times [2024-06-28 02:22:04,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:04,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717409877] [2024-06-28 02:22:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:05,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:05,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717409877] [2024-06-28 02:22:05,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717409877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:05,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:05,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:22:05,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501280750] [2024-06-28 02:22:05,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:05,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:22:05,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:05,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:22:05,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:22:05,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:22:05,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:05,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:05,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:22:05,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:05,806 INFO L124 PetriNetUnfolderBase]: 216/391 cut-off events. [2024-06-28 02:22:05,806 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 02:22:05,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 391 events. 216/391 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1471 event pairs, 133 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 781. Up to 378 conditions per place. [2024-06-28 02:22:05,813 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-28 02:22:05,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-28 02:22:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:22:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:22:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-28 02:22:05,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:22:05,824 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 52 transitions. [2024-06-28 02:22:05,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-28 02:22:05,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:05,828 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-28 02:22:05,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-28 02:22:05,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-28 02:22:05,832 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-28 02:22:05,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:05,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:05,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:05,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:22:05,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:05,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash -853149910, now seen corresponding path program 1 times [2024-06-28 02:22:05,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:05,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429146851] [2024-06-28 02:22:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:05,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:06,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:06,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429146851] [2024-06-28 02:22:06,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429146851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:06,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:06,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:22:06,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820530569] [2024-06-28 02:22:06,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:06,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:06,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:06,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:06,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:06,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:22:06,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:06,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:06,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:22:06,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:06,493 INFO L124 PetriNetUnfolderBase]: 207/376 cut-off events. [2024-06-28 02:22:06,493 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-06-28 02:22:06,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 376 events. 207/376 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1426 event pairs, 76 based on Foata normal form. 6/381 useless extension candidates. Maximal degree in co-relation 844. Up to 336 conditions per place. [2024-06-28 02:22:06,498 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-28 02:22:06,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 171 flow [2024-06-28 02:22:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-28 02:22:06,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 02:22:06,502 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 68 transitions. [2024-06-28 02:22:06,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 171 flow [2024-06-28 02:22:06,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:06,506 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-28 02:22:06,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-28 02:22:06,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-28 02:22:06,508 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-28 02:22:06,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:06,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:06,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:06,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:22:06,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:06,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:06,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1413365843, now seen corresponding path program 1 times [2024-06-28 02:22:06,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:06,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892131139] [2024-06-28 02:22:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:06,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:06,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892131139] [2024-06-28 02:22:06,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892131139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:06,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:06,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:06,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410232443] [2024-06-28 02:22:06,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:06,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:06,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:06,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:06,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:06,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:06,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:06,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:06,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:06,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:07,100 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-28 02:22:07,100 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-06-28 02:22:07,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 432 events. 243/432 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1578 event pairs, 144 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1075. Up to 421 conditions per place. [2024-06-28 02:22:07,102 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-28 02:22:07,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 181 flow [2024-06-28 02:22:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:07,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-06-28 02:22:07,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 02:22:07,104 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 57 transitions. [2024-06-28 02:22:07,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 181 flow [2024-06-28 02:22:07,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 172 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:07,105 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 115 flow [2024-06-28 02:22:07,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-28 02:22:07,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-28 02:22:07,106 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 115 flow [2024-06-28 02:22:07,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:07,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:07,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:07,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:22:07,107 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:07,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1318769256, now seen corresponding path program 1 times [2024-06-28 02:22:07,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:07,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826520044] [2024-06-28 02:22:07,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:07,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:08,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826520044] [2024-06-28 02:22:08,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826520044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:08,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:08,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:08,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297685352] [2024-06-28 02:22:08,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:08,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:08,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:08,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:08,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:08,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:22:08,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 115 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:08,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:08,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:22:08,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:08,592 INFO L124 PetriNetUnfolderBase]: 239/424 cut-off events. [2024-06-28 02:22:08,592 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2024-06-28 02:22:08,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1139 conditions, 424 events. 239/424 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1486 event pairs, 41 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 1123. Up to 362 conditions per place. [2024-06-28 02:22:08,594 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-28 02:22:08,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 241 flow [2024-06-28 02:22:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-28 02:22:08,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-28 02:22:08,596 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 115 flow. Second operand 6 states and 86 transitions. [2024-06-28 02:22:08,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 241 flow [2024-06-28 02:22:08,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 230 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:08,598 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow [2024-06-28 02:22:08,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-28 02:22:08,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-28 02:22:08,598 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow [2024-06-28 02:22:08,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:08,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:08,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:08,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:22:08,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:08,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:08,600 INFO L85 PathProgramCache]: Analyzing trace with hash 864669008, now seen corresponding path program 1 times [2024-06-28 02:22:08,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:08,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167404039] [2024-06-28 02:22:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:08,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:09,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:09,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167404039] [2024-06-28 02:22:09,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167404039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:09,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:09,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:09,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610706728] [2024-06-28 02:22:09,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:09,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:09,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:09,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:09,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:09,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:09,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:09,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:09,297 INFO L124 PetriNetUnfolderBase]: 237/421 cut-off events. [2024-06-28 02:22:09,297 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2024-06-28 02:22:09,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 421 events. 237/421 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1477 event pairs, 103 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1211. Up to 407 conditions per place. [2024-06-28 02:22:09,299 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-28 02:22:09,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 225 flow [2024-06-28 02:22:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:09,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-28 02:22:09,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 02:22:09,301 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 6 states and 64 transitions. [2024-06-28 02:22:09,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 225 flow [2024-06-28 02:22:09,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 209 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:09,303 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 146 flow [2024-06-28 02:22:09,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-28 02:22:09,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-28 02:22:09,304 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 146 flow [2024-06-28 02:22:09,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:09,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:09,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:09,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:22:09,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:09,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:09,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1228321980, now seen corresponding path program 1 times [2024-06-28 02:22:09,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:09,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423932373] [2024-06-28 02:22:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:09,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:09,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:09,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423932373] [2024-06-28 02:22:09,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423932373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:09,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:09,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:09,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333200713] [2024-06-28 02:22:09,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:09,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:09,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:09,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:09,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:09,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:09,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:09,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:09,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:09,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:10,082 INFO L124 PetriNetUnfolderBase]: 243/431 cut-off events. [2024-06-28 02:22:10,083 INFO L125 PetriNetUnfolderBase]: For 830/830 co-relation queries the response was YES. [2024-06-28 02:22:10,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 431 events. 243/431 cut-off events. For 830/830 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1528 event pairs, 82 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 1309. Up to 385 conditions per place. [2024-06-28 02:22:10,085 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-28 02:22:10,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 294 flow [2024-06-28 02:22:10,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-28 02:22:10,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:22:10,086 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 146 flow. Second operand 6 states and 72 transitions. [2024-06-28 02:22:10,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 294 flow [2024-06-28 02:22:10,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 277 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:10,088 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 176 flow [2024-06-28 02:22:10,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-28 02:22:10,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-28 02:22:10,089 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 176 flow [2024-06-28 02:22:10,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:10,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:10,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:22:10,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:10,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:10,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1059058120, now seen corresponding path program 2 times [2024-06-28 02:22:10,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:10,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433595528] [2024-06-28 02:22:10,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:10,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:10,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:10,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433595528] [2024-06-28 02:22:10,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433595528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:10,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:10,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:10,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509319462] [2024-06-28 02:22:10,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:10,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:10,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:10,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:10,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:10,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:10,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:10,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:10,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:10,797 INFO L124 PetriNetUnfolderBase]: 239/426 cut-off events. [2024-06-28 02:22:10,797 INFO L125 PetriNetUnfolderBase]: For 1129/1129 co-relation queries the response was YES. [2024-06-28 02:22:10,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 426 events. 239/426 cut-off events. For 1129/1129 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1518 event pairs, 88 based on Foata normal form. 2/426 useless extension candidates. Maximal degree in co-relation 1379. Up to 382 conditions per place. [2024-06-28 02:22:10,800 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-28 02:22:10,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 284 flow [2024-06-28 02:22:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:10,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-28 02:22:10,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:22:10,801 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 176 flow. Second operand 6 states and 69 transitions. [2024-06-28 02:22:10,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 284 flow [2024-06-28 02:22:10,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 270 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:10,803 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 189 flow [2024-06-28 02:22:10,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-06-28 02:22:10,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-28 02:22:10,804 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 189 flow [2024-06-28 02:22:10,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:10,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:10,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:22:10,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:10,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:10,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1034936338, now seen corresponding path program 1 times [2024-06-28 02:22:10,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:10,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281837741] [2024-06-28 02:22:10,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:10,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:11,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:11,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281837741] [2024-06-28 02:22:11,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281837741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:11,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:11,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:11,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216152906] [2024-06-28 02:22:11,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:11,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:11,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:11,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:11,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:11,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:11,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 189 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:11,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:11,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:11,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:11,647 INFO L124 PetriNetUnfolderBase]: 237/422 cut-off events. [2024-06-28 02:22:11,647 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2024-06-28 02:22:11,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 422 events. 237/422 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1497 event pairs, 99 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 1412. Up to 405 conditions per place. [2024-06-28 02:22:11,649 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 34 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-28 02:22:11,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 303 flow [2024-06-28 02:22:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:11,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-28 02:22:11,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-28 02:22:11,651 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 189 flow. Second operand 7 states and 72 transitions. [2024-06-28 02:22:11,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 303 flow [2024-06-28 02:22:11,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 273 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:11,653 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 198 flow [2024-06-28 02:22:11,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-28 02:22:11,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-28 02:22:11,654 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 198 flow [2024-06-28 02:22:11,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:11,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:11,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:11,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:22:11,654 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:11,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:11,655 INFO L85 PathProgramCache]: Analyzing trace with hash 955424733, now seen corresponding path program 1 times [2024-06-28 02:22:11,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:11,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926119770] [2024-06-28 02:22:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:11,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:12,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:12,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926119770] [2024-06-28 02:22:12,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926119770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:12,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:12,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:12,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865320117] [2024-06-28 02:22:12,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:12,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:12,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:12,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:12,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:12,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:12,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:12,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:12,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:12,434 INFO L124 PetriNetUnfolderBase]: 243/433 cut-off events. [2024-06-28 02:22:12,434 INFO L125 PetriNetUnfolderBase]: For 1686/1686 co-relation queries the response was YES. [2024-06-28 02:22:12,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 433 events. 243/433 cut-off events. For 1686/1686 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1545 event pairs, 85 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1493. Up to 383 conditions per place. [2024-06-28 02:22:12,438 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 17 changer transitions 0/57 dead transitions. [2024-06-28 02:22:12,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 57 transitions, 362 flow [2024-06-28 02:22:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-28 02:22:12,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-28 02:22:12,439 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 198 flow. Second operand 7 states and 79 transitions. [2024-06-28 02:22:12,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 57 transitions, 362 flow [2024-06-28 02:22:12,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 339 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:12,443 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 260 flow [2024-06-28 02:22:12,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-06-28 02:22:12,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-28 02:22:12,444 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 260 flow [2024-06-28 02:22:12,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:12,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:12,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:12,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:22:12,445 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:12,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1528668903, now seen corresponding path program 2 times [2024-06-28 02:22:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:12,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177990085] [2024-06-28 02:22:12,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:12,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:12,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:12,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177990085] [2024-06-28 02:22:12,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177990085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:12,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:12,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:12,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515205285] [2024-06-28 02:22:12,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:12,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:12,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:12,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:12,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:13,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:13,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:13,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:13,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:13,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:13,217 INFO L124 PetriNetUnfolderBase]: 249/443 cut-off events. [2024-06-28 02:22:13,217 INFO L125 PetriNetUnfolderBase]: For 2176/2178 co-relation queries the response was YES. [2024-06-28 02:22:13,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1718 conditions, 443 events. 249/443 cut-off events. For 2176/2178 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1601 event pairs, 81 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 1692. Up to 371 conditions per place. [2024-06-28 02:22:13,220 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 21 changer transitions 0/61 dead transitions. [2024-06-28 02:22:13,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 455 flow [2024-06-28 02:22:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-28 02:22:13,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 02:22:13,221 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 260 flow. Second operand 7 states and 80 transitions. [2024-06-28 02:22:13,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 455 flow [2024-06-28 02:22:13,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 439 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:13,223 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 319 flow [2024-06-28 02:22:13,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-28 02:22:13,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-28 02:22:13,224 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 319 flow [2024-06-28 02:22:13,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:13,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:13,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:13,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:22:13,225 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:13,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1162078173, now seen corresponding path program 3 times [2024-06-28 02:22:13,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:13,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500114688] [2024-06-28 02:22:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:13,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:13,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:13,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500114688] [2024-06-28 02:22:13,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500114688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:13,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:13,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:13,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896531435] [2024-06-28 02:22:13,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:13,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:13,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:13,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:13,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:13,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:13,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:13,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:13,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:13,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:13,948 INFO L124 PetriNetUnfolderBase]: 250/445 cut-off events. [2024-06-28 02:22:13,948 INFO L125 PetriNetUnfolderBase]: For 2693/2695 co-relation queries the response was YES. [2024-06-28 02:22:13,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1819 conditions, 445 events. 250/445 cut-off events. For 2693/2695 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1597 event pairs, 86 based on Foata normal form. 2/446 useless extension candidates. Maximal degree in co-relation 1791. Up to 395 conditions per place. [2024-06-28 02:22:13,951 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 42 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2024-06-28 02:22:13,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 480 flow [2024-06-28 02:22:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-28 02:22:13,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:22:13,952 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 319 flow. Second operand 7 states and 77 transitions. [2024-06-28 02:22:13,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 480 flow [2024-06-28 02:22:13,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 451 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:13,955 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 359 flow [2024-06-28 02:22:13,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-28 02:22:13,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-28 02:22:13,956 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 359 flow [2024-06-28 02:22:13,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:13,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:13,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:13,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:22:13,957 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:13,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2018256303, now seen corresponding path program 1 times [2024-06-28 02:22:13,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:13,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371745662] [2024-06-28 02:22:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:13,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:15,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:15,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371745662] [2024-06-28 02:22:15,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371745662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:15,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:15,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:15,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671922715] [2024-06-28 02:22:15,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:15,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:15,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:15,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:15,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:15,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:15,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 359 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:15,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:15,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:15,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:15,307 INFO L124 PetriNetUnfolderBase]: 248/441 cut-off events. [2024-06-28 02:22:15,307 INFO L125 PetriNetUnfolderBase]: For 2983/2983 co-relation queries the response was YES. [2024-06-28 02:22:15,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 441 events. 248/441 cut-off events. For 2983/2983 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1569 event pairs, 77 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1845. Up to 421 conditions per place. [2024-06-28 02:22:15,310 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-28 02:22:15,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 63 transitions, 511 flow [2024-06-28 02:22:15,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:15,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-28 02:22:15,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-28 02:22:15,311 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 359 flow. Second operand 8 states and 80 transitions. [2024-06-28 02:22:15,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 63 transitions, 511 flow [2024-06-28 02:22:15,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 488 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:15,315 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 381 flow [2024-06-28 02:22:15,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=381, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-28 02:22:15,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-28 02:22:15,315 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 381 flow [2024-06-28 02:22:15,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:15,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:15,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:15,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:22:15,316 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:15,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:15,317 INFO L85 PathProgramCache]: Analyzing trace with hash -451372027, now seen corresponding path program 1 times [2024-06-28 02:22:15,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:15,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154198384] [2024-06-28 02:22:15,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:15,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:16,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:16,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154198384] [2024-06-28 02:22:16,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154198384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:16,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:16,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:16,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523718344] [2024-06-28 02:22:16,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:16,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:16,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:16,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:16,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:16,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:16,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 381 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:16,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:16,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:16,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:16,440 INFO L124 PetriNetUnfolderBase]: 254/451 cut-off events. [2024-06-28 02:22:16,441 INFO L125 PetriNetUnfolderBase]: For 3486/3486 co-relation queries the response was YES. [2024-06-28 02:22:16,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 451 events. 254/451 cut-off events. For 3486/3486 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1619 event pairs, 55 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 1938. Up to 399 conditions per place. [2024-06-28 02:22:16,444 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 59 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2024-06-28 02:22:16,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 567 flow [2024-06-28 02:22:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:16,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:16,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 02:22:16,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-28 02:22:16,445 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 381 flow. Second operand 7 states and 81 transitions. [2024-06-28 02:22:16,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 567 flow [2024-06-28 02:22:16,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 538 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:16,449 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 393 flow [2024-06-28 02:22:16,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-06-28 02:22:16,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-28 02:22:16,451 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 393 flow [2024-06-28 02:22:16,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:16,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:16,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:16,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:22:16,451 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:16,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:16,452 INFO L85 PathProgramCache]: Analyzing trace with hash -451251871, now seen corresponding path program 1 times [2024-06-28 02:22:16,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:16,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306362570] [2024-06-28 02:22:16,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:16,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:17,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:17,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306362570] [2024-06-28 02:22:17,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306362570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:17,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:17,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:17,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802614620] [2024-06-28 02:22:17,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:17,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:17,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:17,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:17,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:17,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:17,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 393 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:17,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:17,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:17,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:17,405 INFO L124 PetriNetUnfolderBase]: 257/456 cut-off events. [2024-06-28 02:22:17,405 INFO L125 PetriNetUnfolderBase]: For 4000/4000 co-relation queries the response was YES. [2024-06-28 02:22:17,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 456 events. 257/456 cut-off events. For 4000/4000 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1656 event pairs, 75 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 2045. Up to 404 conditions per place. [2024-06-28 02:22:17,408 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 18 changer transitions 0/70 dead transitions. [2024-06-28 02:22:17,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 577 flow [2024-06-28 02:22:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:17,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-28 02:22:17,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 02:22:17,410 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 393 flow. Second operand 7 states and 80 transitions. [2024-06-28 02:22:17,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 577 flow [2024-06-28 02:22:17,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 552 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:17,418 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 434 flow [2024-06-28 02:22:17,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2024-06-28 02:22:17,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-28 02:22:17,419 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 434 flow [2024-06-28 02:22:17,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:17,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:17,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:17,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:22:17,420 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:17,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:17,421 INFO L85 PathProgramCache]: Analyzing trace with hash -446783407, now seen corresponding path program 2 times [2024-06-28 02:22:17,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:17,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560186055] [2024-06-28 02:22:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:17,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:18,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:18,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560186055] [2024-06-28 02:22:18,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560186055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:18,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:18,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:18,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719101151] [2024-06-28 02:22:18,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:18,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:18,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:18,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:18,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:18,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:18,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 434 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:18,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:18,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:18,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:18,488 INFO L124 PetriNetUnfolderBase]: 263/466 cut-off events. [2024-06-28 02:22:18,488 INFO L125 PetriNetUnfolderBase]: For 4714/4714 co-relation queries the response was YES. [2024-06-28 02:22:18,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 466 events. 263/466 cut-off events. For 4714/4714 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1722 event pairs, 55 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 2142. Up to 382 conditions per place. [2024-06-28 02:22:18,491 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 55 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2024-06-28 02:22:18,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 672 flow [2024-06-28 02:22:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:18,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-28 02:22:18,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-28 02:22:18,492 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 434 flow. Second operand 7 states and 85 transitions. [2024-06-28 02:22:18,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 672 flow [2024-06-28 02:22:18,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 636 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:18,501 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 475 flow [2024-06-28 02:22:18,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=475, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-28 02:22:18,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-28 02:22:18,502 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 475 flow [2024-06-28 02:22:18,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:18,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:18,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:18,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:22:18,503 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:18,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash 698610371, now seen corresponding path program 1 times [2024-06-28 02:22:18,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:18,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460536241] [2024-06-28 02:22:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:19,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460536241] [2024-06-28 02:22:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460536241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:19,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:19,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910189380] [2024-06-28 02:22:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:19,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:19,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:19,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:19,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 475 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:19,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:19,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:19,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:19,383 INFO L124 PetriNetUnfolderBase]: 269/477 cut-off events. [2024-06-28 02:22:19,383 INFO L125 PetriNetUnfolderBase]: For 5470/5470 co-relation queries the response was YES. [2024-06-28 02:22:19,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 477 events. 269/477 cut-off events. For 5470/5470 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1763 event pairs, 80 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2260. Up to 419 conditions per place. [2024-06-28 02:22:19,386 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2024-06-28 02:22:19,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 677 flow [2024-06-28 02:22:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 02:22:19,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:22:19,388 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 475 flow. Second operand 8 states and 88 transitions. [2024-06-28 02:22:19,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 677 flow [2024-06-28 02:22:19,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 78 transitions, 653 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:19,393 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 512 flow [2024-06-28 02:22:19,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=512, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-28 02:22:19,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-28 02:22:19,394 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 512 flow [2024-06-28 02:22:19,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:19,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:19,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:19,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:22:19,395 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:19,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:19,395 INFO L85 PathProgramCache]: Analyzing trace with hash -144094871, now seen corresponding path program 2 times [2024-06-28 02:22:19,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:19,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451292963] [2024-06-28 02:22:19,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:19,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:20,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:20,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451292963] [2024-06-28 02:22:20,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451292963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:20,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:20,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:20,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430884509] [2024-06-28 02:22:20,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:20,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:20,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:20,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:20,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:20,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:20,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 512 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:20,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:20,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:20,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:20,362 INFO L124 PetriNetUnfolderBase]: 285/503 cut-off events. [2024-06-28 02:22:20,363 INFO L125 PetriNetUnfolderBase]: For 6468/6470 co-relation queries the response was YES. [2024-06-28 02:22:20,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2537 conditions, 503 events. 285/503 cut-off events. For 6468/6470 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1872 event pairs, 80 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2500. Up to 387 conditions per place. [2024-06-28 02:22:20,366 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 30 changer transitions 0/84 dead transitions. [2024-06-28 02:22:20,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 828 flow [2024-06-28 02:22:20,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:20,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 02:22:20,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:22:20,368 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 512 flow. Second operand 8 states and 92 transitions. [2024-06-28 02:22:20,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 828 flow [2024-06-28 02:22:20,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 783 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:20,374 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 584 flow [2024-06-28 02:22:20,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=584, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-06-28 02:22:20,375 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-28 02:22:20,375 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 584 flow [2024-06-28 02:22:20,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:20,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:20,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:20,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:22:20,377 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:20,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:20,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1867144911, now seen corresponding path program 3 times [2024-06-28 02:22:20,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:20,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331557726] [2024-06-28 02:22:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:20,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:20,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:20,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331557726] [2024-06-28 02:22:20,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331557726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:20,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:20,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:20,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423014413] [2024-06-28 02:22:20,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:20,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:20,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:20,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:20,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:21,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:21,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 584 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:21,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:21,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:21,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:21,306 INFO L124 PetriNetUnfolderBase]: 286/506 cut-off events. [2024-06-28 02:22:21,306 INFO L125 PetriNetUnfolderBase]: For 7190/7190 co-relation queries the response was YES. [2024-06-28 02:22:21,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 506 events. 286/506 cut-off events. For 7190/7190 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1878 event pairs, 80 based on Foata normal form. 2/507 useless extension candidates. Maximal degree in co-relation 2594. Up to 447 conditions per place. [2024-06-28 02:22:21,310 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 21 changer transitions 0/86 dead transitions. [2024-06-28 02:22:21,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 828 flow [2024-06-28 02:22:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 02:22:21,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2024-06-28 02:22:21,311 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 584 flow. Second operand 9 states and 94 transitions. [2024-06-28 02:22:21,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 828 flow [2024-06-28 02:22:21,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 86 transitions, 792 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:21,318 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 635 flow [2024-06-28 02:22:21,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-06-28 02:22:21,319 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-28 02:22:21,319 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 635 flow [2024-06-28 02:22:21,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:21,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:21,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:21,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:22:21,320 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:21,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1673256741, now seen corresponding path program 4 times [2024-06-28 02:22:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:21,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265423314] [2024-06-28 02:22:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:21,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:21,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:21,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265423314] [2024-06-28 02:22:21,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265423314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:21,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:21,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:21,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775086498] [2024-06-28 02:22:21,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:21,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:21,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:21,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:21,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:21,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:21,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 635 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:21,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:21,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:21,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:22,155 INFO L124 PetriNetUnfolderBase]: 282/498 cut-off events. [2024-06-28 02:22:22,156 INFO L125 PetriNetUnfolderBase]: For 7543/7543 co-relation queries the response was YES. [2024-06-28 02:22:22,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 498 events. 282/498 cut-off events. For 7543/7543 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1854 event pairs, 79 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 2610. Up to 475 conditions per place. [2024-06-28 02:22:22,160 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2024-06-28 02:22:22,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 84 transitions, 826 flow [2024-06-28 02:22:22,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:22,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 02:22:22,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-28 02:22:22,161 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 635 flow. Second operand 8 states and 81 transitions. [2024-06-28 02:22:22,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 84 transitions, 826 flow [2024-06-28 02:22:22,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 84 transitions, 777 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:22,169 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 615 flow [2024-06-28 02:22:22,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=615, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-06-28 02:22:22,169 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-28 02:22:22,170 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 615 flow [2024-06-28 02:22:22,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:22,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:22,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:22,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:22:22,170 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:22,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:22,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1867151669, now seen corresponding path program 2 times [2024-06-28 02:22:22,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:22,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603430576] [2024-06-28 02:22:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:22,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:22,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:22,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603430576] [2024-06-28 02:22:22,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603430576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:22,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:22,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:22,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564829289] [2024-06-28 02:22:22,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:22,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:22,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:22,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:22,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:22,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:22,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 615 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:22,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:22,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:22,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:23,199 INFO L124 PetriNetUnfolderBase]: 280/496 cut-off events. [2024-06-28 02:22:23,199 INFO L125 PetriNetUnfolderBase]: For 8005/8007 co-relation queries the response was YES. [2024-06-28 02:22:23,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2628 conditions, 496 events. 280/496 cut-off events. For 8005/8007 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1847 event pairs, 85 based on Foata normal form. 1/496 useless extension candidates. Maximal degree in co-relation 2585. Up to 443 conditions per place. [2024-06-28 02:22:23,202 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 61 selfloop transitions, 19 changer transitions 0/82 dead transitions. [2024-06-28 02:22:23,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 82 transitions, 795 flow [2024-06-28 02:22:23,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 02:22:23,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-28 02:22:23,222 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 615 flow. Second operand 7 states and 78 transitions. [2024-06-28 02:22:23,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 82 transitions, 795 flow [2024-06-28 02:22:23,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 82 transitions, 766 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:23,230 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 632 flow [2024-06-28 02:22:23,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-06-28 02:22:23,231 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-28 02:22:23,231 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 632 flow [2024-06-28 02:22:23,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:23,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:23,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:23,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:22:23,232 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:23,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:23,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1867151855, now seen corresponding path program 3 times [2024-06-28 02:22:23,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:23,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952625854] [2024-06-28 02:22:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:23,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:23,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:23,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952625854] [2024-06-28 02:22:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952625854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:23,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:23,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259848091] [2024-06-28 02:22:23,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:23,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:23,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:23,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:23,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:23,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:23,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:23,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:23,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:23,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:24,299 INFO L124 PetriNetUnfolderBase]: 276/490 cut-off events. [2024-06-28 02:22:24,300 INFO L125 PetriNetUnfolderBase]: For 8614/8616 co-relation queries the response was YES. [2024-06-28 02:22:24,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 490 events. 276/490 cut-off events. For 8614/8616 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1815 event pairs, 72 based on Foata normal form. 2/491 useless extension candidates. Maximal degree in co-relation 2580. Up to 408 conditions per place. [2024-06-28 02:22:24,303 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 20 changer transitions 0/85 dead transitions. [2024-06-28 02:22:24,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 85 transitions, 822 flow [2024-06-28 02:22:24,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:24,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 02:22:24,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 02:22:24,304 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 632 flow. Second operand 7 states and 82 transitions. [2024-06-28 02:22:24,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 85 transitions, 822 flow [2024-06-28 02:22:24,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 85 transitions, 757 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:24,311 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 612 flow [2024-06-28 02:22:24,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=612, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2024-06-28 02:22:24,311 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-28 02:22:24,311 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 612 flow [2024-06-28 02:22:24,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:24,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:24,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:24,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:22:24,312 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:24,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:24,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1673267653, now seen corresponding path program 1 times [2024-06-28 02:22:24,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:24,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876142546] [2024-06-28 02:22:24,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:24,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:25,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:25,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876142546] [2024-06-28 02:22:25,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876142546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:25,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:25,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:25,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388364974] [2024-06-28 02:22:25,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:25,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:25,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:25,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:25,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:25,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 612 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:25,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:25,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:25,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:25,831 INFO L124 PetriNetUnfolderBase]: 274/486 cut-off events. [2024-06-28 02:22:25,831 INFO L125 PetriNetUnfolderBase]: For 8108/8108 co-relation queries the response was YES. [2024-06-28 02:22:25,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 486 events. 274/486 cut-off events. For 8108/8108 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1794 event pairs, 77 based on Foata normal form. 1/486 useless extension candidates. Maximal degree in co-relation 2538. Up to 463 conditions per place. [2024-06-28 02:22:25,835 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-06-28 02:22:25,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 86 transitions, 817 flow [2024-06-28 02:22:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:25,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-28 02:22:25,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-28 02:22:25,836 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 612 flow. Second operand 9 states and 88 transitions. [2024-06-28 02:22:25,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 86 transitions, 817 flow [2024-06-28 02:22:25,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 86 transitions, 766 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:25,844 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 612 flow [2024-06-28 02:22:25,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=612, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2024-06-28 02:22:25,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-28 02:22:25,845 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 612 flow [2024-06-28 02:22:25,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:25,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:25,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:25,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:22:25,846 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:25,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:25,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1107630114, now seen corresponding path program 1 times [2024-06-28 02:22:25,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:25,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626132796] [2024-06-28 02:22:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:25,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:26,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:26,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626132796] [2024-06-28 02:22:26,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626132796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:26,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:26,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:26,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569518243] [2024-06-28 02:22:26,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:26,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:26,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:26,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:26,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:26,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:26,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 612 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:26,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:26,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:26,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:26,948 INFO L124 PetriNetUnfolderBase]: 283/501 cut-off events. [2024-06-28 02:22:26,948 INFO L125 PetriNetUnfolderBase]: For 8842/8842 co-relation queries the response was YES. [2024-06-28 02:22:26,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 501 events. 283/501 cut-off events. For 8842/8842 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1874 event pairs, 55 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2628. Up to 443 conditions per place. [2024-06-28 02:22:26,952 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-28 02:22:26,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 97 transitions, 871 flow [2024-06-28 02:22:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 02:22:26,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-28 02:22:26,954 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 612 flow. Second operand 8 states and 90 transitions. [2024-06-28 02:22:26,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 97 transitions, 871 flow [2024-06-28 02:22:26,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 836 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:26,962 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 654 flow [2024-06-28 02:22:26,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=654, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2024-06-28 02:22:26,962 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-28 02:22:26,962 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 654 flow [2024-06-28 02:22:26,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:26,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:26,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:26,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:22:26,963 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:26,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:26,963 INFO L85 PathProgramCache]: Analyzing trace with hash 37985642, now seen corresponding path program 2 times [2024-06-28 02:22:26,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:26,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60853584] [2024-06-28 02:22:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:26,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:27,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:27,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60853584] [2024-06-28 02:22:27,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60853584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:27,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:27,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:27,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087474039] [2024-06-28 02:22:27,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:27,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:27,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:27,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:27,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:27,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:27,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 654 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:27,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:27,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:27,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:28,296 INFO L124 PetriNetUnfolderBase]: 351/617 cut-off events. [2024-06-28 02:22:28,296 INFO L125 PetriNetUnfolderBase]: For 10588/10588 co-relation queries the response was YES. [2024-06-28 02:22:28,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 617 events. 351/617 cut-off events. For 10588/10588 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2511 event pairs, 74 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 3332. Up to 455 conditions per place. [2024-06-28 02:22:28,301 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 84 selfloop transitions, 43 changer transitions 0/129 dead transitions. [2024-06-28 02:22:28,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 129 transitions, 1280 flow [2024-06-28 02:22:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 02:22:28,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:22:28,305 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 654 flow. Second operand 9 states and 108 transitions. [2024-06-28 02:22:28,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 129 transitions, 1280 flow [2024-06-28 02:22:28,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 129 transitions, 1216 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:28,318 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 982 flow [2024-06-28 02:22:28,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=982, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2024-06-28 02:22:28,319 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-28 02:22:28,319 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 982 flow [2024-06-28 02:22:28,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:28,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:28,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:28,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:22:28,320 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:28,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1050533578, now seen corresponding path program 3 times [2024-06-28 02:22:28,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:28,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607079177] [2024-06-28 02:22:28,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:28,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:29,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607079177] [2024-06-28 02:22:29,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607079177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:29,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:29,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:29,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160409387] [2024-06-28 02:22:29,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:29,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:29,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:29,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:29,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:29,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 982 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:29,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:29,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:29,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:29,396 INFO L124 PetriNetUnfolderBase]: 367/643 cut-off events. [2024-06-28 02:22:29,397 INFO L125 PetriNetUnfolderBase]: For 12428/12428 co-relation queries the response was YES. [2024-06-28 02:22:29,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 643 events. 367/643 cut-off events. For 12428/12428 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2634 event pairs, 63 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 3718. Up to 481 conditions per place. [2024-06-28 02:22:29,402 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 89 selfloop transitions, 44 changer transitions 0/135 dead transitions. [2024-06-28 02:22:29,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 135 transitions, 1443 flow [2024-06-28 02:22:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 02:22:29,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:22:29,403 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 982 flow. Second operand 9 states and 108 transitions. [2024-06-28 02:22:29,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 135 transitions, 1443 flow [2024-06-28 02:22:29,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 1421 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:29,418 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 1136 flow [2024-06-28 02:22:29,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1136, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2024-06-28 02:22:29,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-28 02:22:29,419 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 1136 flow [2024-06-28 02:22:29,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:29,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:29,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:29,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:22:29,421 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:29,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 37985859, now seen corresponding path program 1 times [2024-06-28 02:22:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:29,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262721682] [2024-06-28 02:22:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:29,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:30,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:30,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262721682] [2024-06-28 02:22:30,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262721682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:30,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:30,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:30,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498379598] [2024-06-28 02:22:30,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:30,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:30,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:30,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:30,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:30,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 1136 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:30,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:30,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:30,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:30,633 INFO L124 PetriNetUnfolderBase]: 370/648 cut-off events. [2024-06-28 02:22:30,634 INFO L125 PetriNetUnfolderBase]: For 13659/13659 co-relation queries the response was YES. [2024-06-28 02:22:30,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 648 events. 370/648 cut-off events. For 13659/13659 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2669 event pairs, 85 based on Foata normal form. 1/648 useless extension candidates. Maximal degree in co-relation 3944. Up to 553 conditions per place. [2024-06-28 02:22:30,639 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 91 selfloop transitions, 32 changer transitions 0/125 dead transitions. [2024-06-28 02:22:30,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 125 transitions, 1438 flow [2024-06-28 02:22:30,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 02:22:30,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-28 02:22:30,640 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 1136 flow. Second operand 8 states and 89 transitions. [2024-06-28 02:22:30,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 125 transitions, 1438 flow [2024-06-28 02:22:30,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 125 transitions, 1364 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:30,658 INFO L231 Difference]: Finished difference. Result has 119 places, 114 transitions, 1162 flow [2024-06-28 02:22:30,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1162, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2024-06-28 02:22:30,658 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-28 02:22:30,658 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 1162 flow [2024-06-28 02:22:30,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:30,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:30,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:30,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:22:30,659 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:30,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:30,659 INFO L85 PathProgramCache]: Analyzing trace with hash -527495260, now seen corresponding path program 4 times [2024-06-28 02:22:30,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:30,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135025594] [2024-06-28 02:22:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:30,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:31,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:31,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135025594] [2024-06-28 02:22:31,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135025594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:31,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:31,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:31,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255158474] [2024-06-28 02:22:31,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:31,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:31,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:31,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:31,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:31,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:31,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 114 transitions, 1162 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:31,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:31,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:31,730 INFO L124 PetriNetUnfolderBase]: 372/652 cut-off events. [2024-06-28 02:22:31,731 INFO L125 PetriNetUnfolderBase]: For 14780/14780 co-relation queries the response was YES. [2024-06-28 02:22:31,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 652 events. 372/652 cut-off events. For 14780/14780 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2680 event pairs, 65 based on Foata normal form. 4/655 useless extension candidates. Maximal degree in co-relation 3944. Up to 512 conditions per place. [2024-06-28 02:22:31,736 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 88 selfloop transitions, 40 changer transitions 0/130 dead transitions. [2024-06-28 02:22:31,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 130 transitions, 1496 flow [2024-06-28 02:22:31,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 02:22:31,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-28 02:22:31,738 INFO L175 Difference]: Start difference. First operand has 119 places, 114 transitions, 1162 flow. Second operand 8 states and 93 transitions. [2024-06-28 02:22:31,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 130 transitions, 1496 flow [2024-06-28 02:22:31,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 130 transitions, 1430 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:31,754 INFO L231 Difference]: Finished difference. Result has 121 places, 118 transitions, 1236 flow [2024-06-28 02:22:31,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1236, PETRI_PLACES=121, PETRI_TRANSITIONS=118} [2024-06-28 02:22:31,755 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-28 02:22:31,755 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 118 transitions, 1236 flow [2024-06-28 02:22:31,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:31,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:31,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:22:31,756 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:31,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash 182085918, now seen corresponding path program 1 times [2024-06-28 02:22:31,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:31,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448605498] [2024-06-28 02:22:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:31,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:33,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:33,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448605498] [2024-06-28 02:22:33,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448605498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:33,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:33,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:33,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710143527] [2024-06-28 02:22:33,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:33,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:33,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:33,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:33,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:33,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 118 transitions, 1236 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:33,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:33,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:33,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:33,434 INFO L124 PetriNetUnfolderBase]: 378/662 cut-off events. [2024-06-28 02:22:33,434 INFO L125 PetriNetUnfolderBase]: For 15429/15429 co-relation queries the response was YES. [2024-06-28 02:22:33,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4131 conditions, 662 events. 378/662 cut-off events. For 15429/15429 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2743 event pairs, 85 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 4073. Up to 570 conditions per place. [2024-06-28 02:22:33,439 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 29 changer transitions 0/134 dead transitions. [2024-06-28 02:22:33,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 134 transitions, 1570 flow [2024-06-28 02:22:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:33,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:22:33,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-28 02:22:33,441 INFO L175 Difference]: Start difference. First operand has 121 places, 118 transitions, 1236 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:22:33,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 134 transitions, 1570 flow [2024-06-28 02:22:33,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 134 transitions, 1468 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:33,459 INFO L231 Difference]: Finished difference. Result has 124 places, 120 transitions, 1217 flow [2024-06-28 02:22:33,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1217, PETRI_PLACES=124, PETRI_TRANSITIONS=120} [2024-06-28 02:22:33,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-28 02:22:33,463 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 120 transitions, 1217 flow [2024-06-28 02:22:33,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:33,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:33,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:33,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:22:33,464 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:33,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1289734368, now seen corresponding path program 5 times [2024-06-28 02:22:33,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:33,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790901955] [2024-06-28 02:22:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:33,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:34,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790901955] [2024-06-28 02:22:34,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790901955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:34,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:34,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660650814] [2024-06-28 02:22:34,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:34,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:34,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:34,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:34,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:34,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:34,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 120 transitions, 1217 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:34,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:34,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:34,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:34,618 INFO L124 PetriNetUnfolderBase]: 384/673 cut-off events. [2024-06-28 02:22:34,618 INFO L125 PetriNetUnfolderBase]: For 16483/16485 co-relation queries the response was YES. [2024-06-28 02:22:34,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 673 events. 384/673 cut-off events. For 16483/16485 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2806 event pairs, 76 based on Foata normal form. 2/674 useless extension candidates. Maximal degree in co-relation 4149. Up to 536 conditions per place. [2024-06-28 02:22:34,623 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 92 selfloop transitions, 39 changer transitions 0/133 dead transitions. [2024-06-28 02:22:34,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 1541 flow [2024-06-28 02:22:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:34,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 02:22:34,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-28 02:22:34,624 INFO L175 Difference]: Start difference. First operand has 124 places, 120 transitions, 1217 flow. Second operand 8 states and 90 transitions. [2024-06-28 02:22:34,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 1541 flow [2024-06-28 02:22:34,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 133 transitions, 1474 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:34,644 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 1265 flow [2024-06-28 02:22:34,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1265, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2024-06-28 02:22:34,645 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-28 02:22:34,645 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 1265 flow [2024-06-28 02:22:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:34,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:34,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:34,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:22:34,646 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:34,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash 322147610, now seen corresponding path program 6 times [2024-06-28 02:22:34,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:34,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560507610] [2024-06-28 02:22:34,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:34,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:35,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:35,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560507610] [2024-06-28 02:22:35,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560507610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:35,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:35,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504161507] [2024-06-28 02:22:35,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:35,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:35,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:35,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:35,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:35,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:35,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 1265 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:35,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:35,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:35,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:35,675 INFO L124 PetriNetUnfolderBase]: 390/682 cut-off events. [2024-06-28 02:22:35,677 INFO L125 PetriNetUnfolderBase]: For 17792/17792 co-relation queries the response was YES. [2024-06-28 02:22:35,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4354 conditions, 682 events. 390/682 cut-off events. For 17792/17792 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2855 event pairs, 70 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 4294. Up to 441 conditions per place. [2024-06-28 02:22:35,698 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 65 changer transitions 0/140 dead transitions. [2024-06-28 02:22:35,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 140 transitions, 1707 flow [2024-06-28 02:22:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 02:22:35,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-28 02:22:35,713 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 1265 flow. Second operand 8 states and 95 transitions. [2024-06-28 02:22:35,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 140 transitions, 1707 flow [2024-06-28 02:22:35,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 140 transitions, 1608 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:35,751 INFO L231 Difference]: Finished difference. Result has 127 places, 126 transitions, 1369 flow [2024-06-28 02:22:35,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1369, PETRI_PLACES=127, PETRI_TRANSITIONS=126} [2024-06-28 02:22:35,752 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-28 02:22:35,752 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 126 transitions, 1369 flow [2024-06-28 02:22:35,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:35,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:35,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:35,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:22:35,752 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:35,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:35,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2046916496, now seen corresponding path program 2 times [2024-06-28 02:22:35,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:35,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204728254] [2024-06-28 02:22:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:35,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:36,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:36,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204728254] [2024-06-28 02:22:36,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204728254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:36,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:36,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:36,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904798821] [2024-06-28 02:22:36,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:36,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:36,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:36,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:36,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:36,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 126 transitions, 1369 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:36,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:36,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:36,997 INFO L124 PetriNetUnfolderBase]: 396/692 cut-off events. [2024-06-28 02:22:36,997 INFO L125 PetriNetUnfolderBase]: For 18935/18935 co-relation queries the response was YES. [2024-06-28 02:22:37,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4512 conditions, 692 events. 396/692 cut-off events. For 18935/18935 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2901 event pairs, 91 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 4451. Up to 610 conditions per place. [2024-06-28 02:22:37,002 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 26 changer transitions 0/139 dead transitions. [2024-06-28 02:22:37,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 139 transitions, 1699 flow [2024-06-28 02:22:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 02:22:37,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-28 02:22:37,021 INFO L175 Difference]: Start difference. First operand has 127 places, 126 transitions, 1369 flow. Second operand 9 states and 95 transitions. [2024-06-28 02:22:37,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 139 transitions, 1699 flow [2024-06-28 02:22:37,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 139 transitions, 1617 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:37,044 INFO L231 Difference]: Finished difference. Result has 132 places, 128 transitions, 1368 flow [2024-06-28 02:22:37,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1368, PETRI_PLACES=132, PETRI_TRANSITIONS=128} [2024-06-28 02:22:37,045 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-28 02:22:37,045 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 128 transitions, 1368 flow [2024-06-28 02:22:37,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:37,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:37,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:22:37,045 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:37,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:37,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2047131822, now seen corresponding path program 7 times [2024-06-28 02:22:37,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:37,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509209417] [2024-06-28 02:22:37,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:37,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:37,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:37,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509209417] [2024-06-28 02:22:37,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509209417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:37,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:37,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:37,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921823159] [2024-06-28 02:22:37,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:37,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:37,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:37,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:37,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:37,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 128 transitions, 1368 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:37,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:37,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:38,049 INFO L124 PetriNetUnfolderBase]: 402/702 cut-off events. [2024-06-28 02:22:38,050 INFO L125 PetriNetUnfolderBase]: For 19771/19771 co-relation queries the response was YES. [2024-06-28 02:22:38,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4610 conditions, 702 events. 402/702 cut-off events. For 19771/19771 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2943 event pairs, 80 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 4547. Up to 570 conditions per place. [2024-06-28 02:22:38,054 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 102 selfloop transitions, 37 changer transitions 0/141 dead transitions. [2024-06-28 02:22:38,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 141 transitions, 1712 flow [2024-06-28 02:22:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 02:22:38,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-28 02:22:38,055 INFO L175 Difference]: Start difference. First operand has 132 places, 128 transitions, 1368 flow. Second operand 8 states and 91 transitions. [2024-06-28 02:22:38,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 141 transitions, 1712 flow [2024-06-28 02:22:38,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 141 transitions, 1647 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:38,078 INFO L231 Difference]: Finished difference. Result has 133 places, 130 transitions, 1420 flow [2024-06-28 02:22:38,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1420, PETRI_PLACES=133, PETRI_TRANSITIONS=130} [2024-06-28 02:22:38,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-28 02:22:38,078 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 130 transitions, 1420 flow [2024-06-28 02:22:38,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:38,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:38,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:38,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:22:38,079 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:38,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:38,079 INFO L85 PathProgramCache]: Analyzing trace with hash -2047126025, now seen corresponding path program 2 times [2024-06-28 02:22:38,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:38,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939980254] [2024-06-28 02:22:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:38,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:38,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:38,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:38,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939980254] [2024-06-28 02:22:38,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939980254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:38,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:38,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:38,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011263210] [2024-06-28 02:22:38,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:38,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:38,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:38,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:38,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:39,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:39,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 130 transitions, 1420 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:39,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:39,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:39,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:39,307 INFO L124 PetriNetUnfolderBase]: 400/699 cut-off events. [2024-06-28 02:22:39,307 INFO L125 PetriNetUnfolderBase]: For 20215/20215 co-relation queries the response was YES. [2024-06-28 02:22:39,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4629 conditions, 699 events. 400/699 cut-off events. For 20215/20215 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2944 event pairs, 91 based on Foata normal form. 1/699 useless extension candidates. Maximal degree in co-relation 4565. Up to 619 conditions per place. [2024-06-28 02:22:39,326 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 110 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2024-06-28 02:22:39,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 139 transitions, 1722 flow [2024-06-28 02:22:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 02:22:39,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-28 02:22:39,341 INFO L175 Difference]: Start difference. First operand has 133 places, 130 transitions, 1420 flow. Second operand 8 states and 87 transitions. [2024-06-28 02:22:39,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 139 transitions, 1722 flow [2024-06-28 02:22:39,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 139 transitions, 1625 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:39,384 INFO L231 Difference]: Finished difference. Result has 135 places, 130 transitions, 1385 flow [2024-06-28 02:22:39,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1385, PETRI_PLACES=135, PETRI_TRANSITIONS=130} [2024-06-28 02:22:39,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-28 02:22:39,395 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 130 transitions, 1385 flow [2024-06-28 02:22:39,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:39,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:39,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:39,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:22:39,396 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:39,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:39,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1780892786, now seen corresponding path program 3 times [2024-06-28 02:22:39,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:39,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760837041] [2024-06-28 02:22:39,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:39,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:40,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:40,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760837041] [2024-06-28 02:22:40,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760837041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:40,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:40,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:40,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840041464] [2024-06-28 02:22:40,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:40,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:40,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:40,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:40,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 130 transitions, 1385 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:40,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:40,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:40,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:40,617 INFO L124 PetriNetUnfolderBase]: 422/735 cut-off events. [2024-06-28 02:22:40,617 INFO L125 PetriNetUnfolderBase]: For 23862/23862 co-relation queries the response was YES. [2024-06-28 02:22:40,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4835 conditions, 735 events. 422/735 cut-off events. For 23862/23862 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3143 event pairs, 110 based on Foata normal form. 4/738 useless extension candidates. Maximal degree in co-relation 4770. Up to 687 conditions per place. [2024-06-28 02:22:40,642 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 19 changer transitions 0/147 dead transitions. [2024-06-28 02:22:40,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 147 transitions, 1821 flow [2024-06-28 02:22:40,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 02:22:40,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-28 02:22:40,644 INFO L175 Difference]: Start difference. First operand has 135 places, 130 transitions, 1385 flow. Second operand 10 states and 101 transitions. [2024-06-28 02:22:40,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 147 transitions, 1821 flow [2024-06-28 02:22:40,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 147 transitions, 1731 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:40,674 INFO L231 Difference]: Finished difference. Result has 138 places, 135 transitions, 1396 flow [2024-06-28 02:22:40,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1396, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2024-06-28 02:22:40,675 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-28 02:22:40,675 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 1396 flow [2024-06-28 02:22:40,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:40,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:40,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:40,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:22:40,676 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:40,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:40,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1781219216, now seen corresponding path program 4 times [2024-06-28 02:22:40,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:40,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144686851] [2024-06-28 02:22:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:40,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:41,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:41,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144686851] [2024-06-28 02:22:41,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144686851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:41,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:41,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:41,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837461503] [2024-06-28 02:22:41,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:41,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:41,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:41,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:41,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:41,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 1396 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:41,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:41,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:41,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:41,765 INFO L124 PetriNetUnfolderBase]: 428/745 cut-off events. [2024-06-28 02:22:41,765 INFO L125 PetriNetUnfolderBase]: For 22986/22986 co-relation queries the response was YES. [2024-06-28 02:22:41,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 745 events. 428/745 cut-off events. For 22986/22986 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3186 event pairs, 84 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4850. Up to 511 conditions per place. [2024-06-28 02:22:41,771 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 96 selfloop transitions, 55 changer transitions 0/153 dead transitions. [2024-06-28 02:22:41,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 153 transitions, 1868 flow [2024-06-28 02:22:41,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:22:41,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-28 02:22:41,772 INFO L175 Difference]: Start difference. First operand has 138 places, 135 transitions, 1396 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:22:41,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 153 transitions, 1868 flow [2024-06-28 02:22:41,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 153 transitions, 1821 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:41,803 INFO L231 Difference]: Finished difference. Result has 142 places, 139 transitions, 1547 flow [2024-06-28 02:22:41,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=142, PETRI_TRANSITIONS=139} [2024-06-28 02:22:41,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-28 02:22:41,804 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 139 transitions, 1547 flow [2024-06-28 02:22:41,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:41,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:41,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:41,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:22:41,804 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:41,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:41,805 INFO L85 PathProgramCache]: Analyzing trace with hash 65445290, now seen corresponding path program 8 times [2024-06-28 02:22:41,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:41,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812231595] [2024-06-28 02:22:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:41,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:42,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:42,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812231595] [2024-06-28 02:22:42,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812231595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:42,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:42,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:42,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093344612] [2024-06-28 02:22:42,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:42,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:42,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:42,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 139 transitions, 1547 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:42,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:42,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:42,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:42,893 INFO L124 PetriNetUnfolderBase]: 424/739 cut-off events. [2024-06-28 02:22:42,893 INFO L125 PetriNetUnfolderBase]: For 23605/23605 co-relation queries the response was YES. [2024-06-28 02:22:42,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5021 conditions, 739 events. 424/739 cut-off events. For 23605/23605 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3164 event pairs, 82 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4952. Up to 586 conditions per place. [2024-06-28 02:22:42,898 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 106 selfloop transitions, 44 changer transitions 0/152 dead transitions. [2024-06-28 02:22:42,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 152 transitions, 1889 flow [2024-06-28 02:22:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 02:22:42,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-28 02:22:42,899 INFO L175 Difference]: Start difference. First operand has 142 places, 139 transitions, 1547 flow. Second operand 8 states and 95 transitions. [2024-06-28 02:22:42,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 152 transitions, 1889 flow [2024-06-28 02:22:42,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 152 transitions, 1807 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:42,940 INFO L231 Difference]: Finished difference. Result has 145 places, 139 transitions, 1561 flow [2024-06-28 02:22:42,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1561, PETRI_PLACES=145, PETRI_TRANSITIONS=139} [2024-06-28 02:22:42,941 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-28 02:22:42,941 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 1561 flow [2024-06-28 02:22:42,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:42,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:42,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:42,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:22:42,941 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:42,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash 322155546, now seen corresponding path program 5 times [2024-06-28 02:22:42,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:42,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692820218] [2024-06-28 02:22:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:42,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:43,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:43,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692820218] [2024-06-28 02:22:43,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692820218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:43,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:43,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:43,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227528121] [2024-06-28 02:22:43,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:43,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:43,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:43,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:43,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:43,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:43,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 1561 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:43,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:43,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:43,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:44,198 INFO L124 PetriNetUnfolderBase]: 425/741 cut-off events. [2024-06-28 02:22:44,198 INFO L125 PetriNetUnfolderBase]: For 24295/24295 co-relation queries the response was YES. [2024-06-28 02:22:44,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5096 conditions, 741 events. 425/741 cut-off events. For 24295/24295 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3185 event pairs, 89 based on Foata normal form. 2/742 useless extension candidates. Maximal degree in co-relation 5025. Up to 629 conditions per place. [2024-06-28 02:22:44,203 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 38 changer transitions 0/153 dead transitions. [2024-06-28 02:22:44,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 153 transitions, 1934 flow [2024-06-28 02:22:44,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:22:44,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-28 02:22:44,205 INFO L175 Difference]: Start difference. First operand has 145 places, 139 transitions, 1561 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:22:44,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 153 transitions, 1934 flow [2024-06-28 02:22:44,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 153 transitions, 1722 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 02:22:44,239 INFO L231 Difference]: Finished difference. Result has 145 places, 141 transitions, 1463 flow [2024-06-28 02:22:44,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1463, PETRI_PLACES=145, PETRI_TRANSITIONS=141} [2024-06-28 02:22:44,240 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-28 02:22:44,241 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 141 transitions, 1463 flow [2024-06-28 02:22:44,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:44,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:44,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:44,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:22:44,241 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:44,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:44,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1780880882, now seen corresponding path program 1 times [2024-06-28 02:22:44,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:44,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955766182] [2024-06-28 02:22:44,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:44,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:45,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:45,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955766182] [2024-06-28 02:22:45,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955766182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:45,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:45,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:45,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442773762] [2024-06-28 02:22:45,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:45,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:45,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:45,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:45,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:45,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:45,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 141 transitions, 1463 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:45,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:45,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:45,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:45,850 INFO L124 PetriNetUnfolderBase]: 422/736 cut-off events. [2024-06-28 02:22:45,850 INFO L125 PetriNetUnfolderBase]: For 24087/24087 co-relation queries the response was YES. [2024-06-28 02:22:45,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4823 conditions, 736 events. 422/736 cut-off events. For 24087/24087 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3117 event pairs, 115 based on Foata normal form. 2/737 useless extension candidates. Maximal degree in co-relation 4753. Up to 705 conditions per place. [2024-06-28 02:22:45,855 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 133 selfloop transitions, 16 changer transitions 0/151 dead transitions. [2024-06-28 02:22:45,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 151 transitions, 1783 flow [2024-06-28 02:22:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-28 02:22:45,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-28 02:22:45,865 INFO L175 Difference]: Start difference. First operand has 145 places, 141 transitions, 1463 flow. Second operand 10 states and 95 transitions. [2024-06-28 02:22:45,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 151 transitions, 1783 flow [2024-06-28 02:22:45,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 151 transitions, 1688 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:45,902 INFO L231 Difference]: Finished difference. Result has 148 places, 141 transitions, 1404 flow [2024-06-28 02:22:45,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1404, PETRI_PLACES=148, PETRI_TRANSITIONS=141} [2024-06-28 02:22:45,903 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-28 02:22:45,903 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 141 transitions, 1404 flow [2024-06-28 02:22:45,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:45,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:45,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:45,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:22:45,904 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:45,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash 20404230, now seen corresponding path program 1 times [2024-06-28 02:22:45,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:45,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686817794] [2024-06-28 02:22:45,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:45,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:46,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:46,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686817794] [2024-06-28 02:22:46,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686817794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:46,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:46,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:46,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234679131] [2024-06-28 02:22:46,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:46,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:46,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:46,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:47,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:47,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 141 transitions, 1404 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:47,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:47,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:47,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:47,379 INFO L124 PetriNetUnfolderBase]: 426/744 cut-off events. [2024-06-28 02:22:47,379 INFO L125 PetriNetUnfolderBase]: For 25044/25044 co-relation queries the response was YES. [2024-06-28 02:22:47,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4808 conditions, 744 events. 426/744 cut-off events. For 25044/25044 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3175 event pairs, 77 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 4737. Up to 651 conditions per place. [2024-06-28 02:22:47,384 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 128 selfloop transitions, 25 changer transitions 0/155 dead transitions. [2024-06-28 02:22:47,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 155 transitions, 1754 flow [2024-06-28 02:22:47,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 02:22:47,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-28 02:22:47,392 INFO L175 Difference]: Start difference. First operand has 148 places, 141 transitions, 1404 flow. Second operand 8 states and 89 transitions. [2024-06-28 02:22:47,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 155 transitions, 1754 flow [2024-06-28 02:22:47,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 155 transitions, 1712 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:22:47,428 INFO L231 Difference]: Finished difference. Result has 148 places, 142 transitions, 1431 flow [2024-06-28 02:22:47,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1431, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2024-06-28 02:22:47,430 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-28 02:22:47,430 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 1431 flow [2024-06-28 02:22:47,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:47,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:47,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:47,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:22:47,431 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:47,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:47,432 INFO L85 PathProgramCache]: Analyzing trace with hash 20343780, now seen corresponding path program 2 times [2024-06-28 02:22:47,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:47,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228859958] [2024-06-28 02:22:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:47,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:48,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:48,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228859958] [2024-06-28 02:22:48,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228859958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:48,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:48,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:48,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705958804] [2024-06-28 02:22:48,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:48,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:48,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:48,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:48,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:48,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:48,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 142 transitions, 1431 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:48,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:48,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:48,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:48,958 INFO L124 PetriNetUnfolderBase]: 430/752 cut-off events. [2024-06-28 02:22:48,958 INFO L125 PetriNetUnfolderBase]: For 25931/25931 co-relation queries the response was YES. [2024-06-28 02:22:48,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4900 conditions, 752 events. 430/752 cut-off events. For 25931/25931 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3208 event pairs, 62 based on Foata normal form. 2/753 useless extension candidates. Maximal degree in co-relation 4828. Up to 630 conditions per place. [2024-06-28 02:22:48,963 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 129 selfloop transitions, 27 changer transitions 0/158 dead transitions. [2024-06-28 02:22:48,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 158 transitions, 1793 flow [2024-06-28 02:22:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:22:48,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-28 02:22:48,965 INFO L175 Difference]: Start difference. First operand has 148 places, 142 transitions, 1431 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:22:48,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 158 transitions, 1793 flow [2024-06-28 02:22:49,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 158 transitions, 1740 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:49,009 INFO L231 Difference]: Finished difference. Result has 151 places, 143 transitions, 1450 flow [2024-06-28 02:22:49,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1450, PETRI_PLACES=151, PETRI_TRANSITIONS=143} [2024-06-28 02:22:49,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-28 02:22:49,011 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 143 transitions, 1450 flow [2024-06-28 02:22:49,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:49,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:49,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:49,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:22:49,011 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:49,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:49,012 INFO L85 PathProgramCache]: Analyzing trace with hash 133428738, now seen corresponding path program 1 times [2024-06-28 02:22:49,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:49,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673604384] [2024-06-28 02:22:49,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:49,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:49,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:49,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673604384] [2024-06-28 02:22:49,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673604384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:49,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:49,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:49,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417543374] [2024-06-28 02:22:49,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:49,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:49,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:49,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:49,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:49,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 143 transitions, 1450 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:49,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:49,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:49,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:50,300 INFO L124 PetriNetUnfolderBase]: 426/746 cut-off events. [2024-06-28 02:22:50,301 INFO L125 PetriNetUnfolderBase]: For 26452/26452 co-relation queries the response was YES. [2024-06-28 02:22:50,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4836 conditions, 746 events. 426/746 cut-off events. For 26452/26452 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3198 event pairs, 77 based on Foata normal form. 2/747 useless extension candidates. Maximal degree in co-relation 4763. Up to 643 conditions per place. [2024-06-28 02:22:50,306 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 122 selfloop transitions, 32 changer transitions 0/156 dead transitions. [2024-06-28 02:22:50,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 156 transitions, 1794 flow [2024-06-28 02:22:50,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:50,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 02:22:50,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-28 02:22:50,308 INFO L175 Difference]: Start difference. First operand has 151 places, 143 transitions, 1450 flow. Second operand 8 states and 90 transitions. [2024-06-28 02:22:50,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 156 transitions, 1794 flow [2024-06-28 02:22:50,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 156 transitions, 1720 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:50,351 INFO L231 Difference]: Finished difference. Result has 152 places, 143 transitions, 1454 flow [2024-06-28 02:22:50,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1454, PETRI_PLACES=152, PETRI_TRANSITIONS=143} [2024-06-28 02:22:50,353 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-28 02:22:50,353 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 143 transitions, 1454 flow [2024-06-28 02:22:50,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:50,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:50,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:50,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:22:50,353 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:50,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:50,354 INFO L85 PathProgramCache]: Analyzing trace with hash 23205700, now seen corresponding path program 1 times [2024-06-28 02:22:50,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:50,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516736545] [2024-06-28 02:22:50,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:50,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:51,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:51,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516736545] [2024-06-28 02:22:51,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516736545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:51,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:51,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835860975] [2024-06-28 02:22:51,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:51,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:51,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:51,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:51,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:51,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 143 transitions, 1454 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:51,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:51,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:51,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:51,603 INFO L124 PetriNetUnfolderBase]: 432/756 cut-off events. [2024-06-28 02:22:51,603 INFO L125 PetriNetUnfolderBase]: For 27479/27479 co-relation queries the response was YES. [2024-06-28 02:22:51,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 756 events. 432/756 cut-off events. For 27479/27479 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3262 event pairs, 68 based on Foata normal form. 2/757 useless extension candidates. Maximal degree in co-relation 4842. Up to 653 conditions per place. [2024-06-28 02:22:51,609 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 27 changer transitions 0/160 dead transitions. [2024-06-28 02:22:51,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 160 transitions, 1834 flow [2024-06-28 02:22:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:22:51,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:22:51,610 INFO L175 Difference]: Start difference. First operand has 152 places, 143 transitions, 1454 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:22:51,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 160 transitions, 1834 flow [2024-06-28 02:22:51,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 160 transitions, 1766 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:51,658 INFO L231 Difference]: Finished difference. Result has 155 places, 145 transitions, 1472 flow [2024-06-28 02:22:51,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1472, PETRI_PLACES=155, PETRI_TRANSITIONS=145} [2024-06-28 02:22:51,658 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-28 02:22:51,658 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 145 transitions, 1472 flow [2024-06-28 02:22:51,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:51,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:51,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:51,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:22:51,659 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:51,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:51,659 INFO L85 PathProgramCache]: Analyzing trace with hash 138081714, now seen corresponding path program 2 times [2024-06-28 02:22:51,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:51,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424392122] [2024-06-28 02:22:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:51,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:52,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:52,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424392122] [2024-06-28 02:22:52,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424392122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:52,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:52,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:52,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306415265] [2024-06-28 02:22:52,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:52,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:52,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:52,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:52,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:52,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:52,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 145 transitions, 1472 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:52,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:52,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:52,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:53,015 INFO L124 PetriNetUnfolderBase]: 448/782 cut-off events. [2024-06-28 02:22:53,016 INFO L125 PetriNetUnfolderBase]: For 30581/30581 co-relation queries the response was YES. [2024-06-28 02:22:53,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5185 conditions, 782 events. 448/782 cut-off events. For 30581/30581 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3396 event pairs, 63 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 5110. Up to 522 conditions per place. [2024-06-28 02:22:53,022 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 65 changer transitions 0/167 dead transitions. [2024-06-28 02:22:53,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 167 transitions, 1992 flow [2024-06-28 02:22:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 02:22:53,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-28 02:22:53,023 INFO L175 Difference]: Start difference. First operand has 155 places, 145 transitions, 1472 flow. Second operand 9 states and 107 transitions. [2024-06-28 02:22:53,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 167 transitions, 1992 flow [2024-06-28 02:22:53,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 167 transitions, 1924 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:53,081 INFO L231 Difference]: Finished difference. Result has 157 places, 149 transitions, 1596 flow [2024-06-28 02:22:53,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1596, PETRI_PLACES=157, PETRI_TRANSITIONS=149} [2024-06-28 02:22:53,082 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-28 02:22:53,082 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 149 transitions, 1596 flow [2024-06-28 02:22:53,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:53,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:53,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:53,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:22:53,083 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:53,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash 138676608, now seen corresponding path program 1 times [2024-06-28 02:22:53,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:53,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527423872] [2024-06-28 02:22:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:53,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:54,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:54,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527423872] [2024-06-28 02:22:54,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527423872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:54,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:54,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:54,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454195521] [2024-06-28 02:22:54,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:54,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:54,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:54,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:54,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:54,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:54,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 149 transitions, 1596 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:54,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:54,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:54,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:54,869 INFO L124 PetriNetUnfolderBase]: 451/787 cut-off events. [2024-06-28 02:22:54,869 INFO L125 PetriNetUnfolderBase]: For 32018/32018 co-relation queries the response was YES. [2024-06-28 02:22:54,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5375 conditions, 787 events. 451/787 cut-off events. For 32018/32018 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3438 event pairs, 86 based on Foata normal form. 1/787 useless extension candidates. Maximal degree in co-relation 5299. Up to 681 conditions per place. [2024-06-28 02:22:54,874 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 126 selfloop transitions, 36 changer transitions 0/164 dead transitions. [2024-06-28 02:22:54,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 164 transitions, 1995 flow [2024-06-28 02:22:54,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:54,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 02:22:54,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-28 02:22:54,876 INFO L175 Difference]: Start difference. First operand has 157 places, 149 transitions, 1596 flow. Second operand 9 states and 98 transitions. [2024-06-28 02:22:54,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 164 transitions, 1995 flow [2024-06-28 02:22:54,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 164 transitions, 1894 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:54,928 INFO L231 Difference]: Finished difference. Result has 161 places, 151 transitions, 1612 flow [2024-06-28 02:22:54,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1612, PETRI_PLACES=161, PETRI_TRANSITIONS=151} [2024-06-28 02:22:54,928 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-28 02:22:54,928 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 151 transitions, 1612 flow [2024-06-28 02:22:54,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:54,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:54,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:54,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:22:54,929 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:54,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash 138491910, now seen corresponding path program 3 times [2024-06-28 02:22:54,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:54,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646774518] [2024-06-28 02:22:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:54,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:55,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:55,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646774518] [2024-06-28 02:22:55,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646774518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:55,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:55,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:55,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865493460] [2024-06-28 02:22:55,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:55,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:55,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:55,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:55,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:55,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:55,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 151 transitions, 1612 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:55,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:55,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:55,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:56,141 INFO L124 PetriNetUnfolderBase]: 455/795 cut-off events. [2024-06-28 02:22:56,141 INFO L125 PetriNetUnfolderBase]: For 34091/34091 co-relation queries the response was YES. [2024-06-28 02:22:56,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5479 conditions, 795 events. 455/795 cut-off events. For 34091/34091 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3467 event pairs, 66 based on Foata normal form. 2/796 useless extension candidates. Maximal degree in co-relation 5401. Up to 663 conditions per place. [2024-06-28 02:22:56,150 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 125 selfloop transitions, 37 changer transitions 0/164 dead transitions. [2024-06-28 02:22:56,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 164 transitions, 1982 flow [2024-06-28 02:22:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 02:22:56,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:22:56,152 INFO L175 Difference]: Start difference. First operand has 161 places, 151 transitions, 1612 flow. Second operand 8 states and 92 transitions. [2024-06-28 02:22:56,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 164 transitions, 1982 flow [2024-06-28 02:22:56,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 164 transitions, 1894 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:56,206 INFO L231 Difference]: Finished difference. Result has 162 places, 152 transitions, 1619 flow [2024-06-28 02:22:56,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1619, PETRI_PLACES=162, PETRI_TRANSITIONS=152} [2024-06-28 02:22:56,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-28 02:22:56,210 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 152 transitions, 1619 flow [2024-06-28 02:22:56,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:56,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:56,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:56,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:22:56,212 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:56,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:56,214 INFO L85 PathProgramCache]: Analyzing trace with hash 518978868, now seen corresponding path program 3 times [2024-06-28 02:22:56,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:56,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558130224] [2024-06-28 02:22:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:56,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:56,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:56,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558130224] [2024-06-28 02:22:56,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558130224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:56,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:56,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:56,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649044514] [2024-06-28 02:22:56,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:56,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:56,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:56,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:56,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:57,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:57,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 152 transitions, 1619 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:57,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:57,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:57,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:57,337 INFO L124 PetriNetUnfolderBase]: 461/805 cut-off events. [2024-06-28 02:22:57,337 INFO L125 PetriNetUnfolderBase]: For 35939/35939 co-relation queries the response was YES. [2024-06-28 02:22:57,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5571 conditions, 805 events. 461/805 cut-off events. For 35939/35939 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3548 event pairs, 62 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 5492. Up to 597 conditions per place. [2024-06-28 02:22:57,343 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 107 selfloop transitions, 61 changer transitions 0/170 dead transitions. [2024-06-28 02:22:57,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 170 transitions, 2031 flow [2024-06-28 02:22:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 02:22:57,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 02:22:57,344 INFO L175 Difference]: Start difference. First operand has 162 places, 152 transitions, 1619 flow. Second operand 9 states and 104 transitions. [2024-06-28 02:22:57,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 170 transitions, 2031 flow [2024-06-28 02:22:57,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 170 transitions, 1948 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:57,405 INFO L231 Difference]: Finished difference. Result has 165 places, 154 transitions, 1694 flow [2024-06-28 02:22:57,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1694, PETRI_PLACES=165, PETRI_TRANSITIONS=154} [2024-06-28 02:22:57,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-28 02:22:57,406 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 154 transitions, 1694 flow [2024-06-28 02:22:57,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:57,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:57,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:57,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:22:57,407 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:57,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:57,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1176788142, now seen corresponding path program 4 times [2024-06-28 02:22:57,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:57,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501000949] [2024-06-28 02:22:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:57,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:58,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:58,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501000949] [2024-06-28 02:22:58,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501000949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:58,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:58,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:58,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836315490] [2024-06-28 02:22:58,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:58,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:58,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:58,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:58,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:58,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:58,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 154 transitions, 1694 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:58,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:58,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:58,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:58,674 INFO L124 PetriNetUnfolderBase]: 462/807 cut-off events. [2024-06-28 02:22:58,675 INFO L125 PetriNetUnfolderBase]: For 36659/36659 co-relation queries the response was YES. [2024-06-28 02:22:58,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5643 conditions, 807 events. 462/807 cut-off events. For 36659/36659 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3549 event pairs, 68 based on Foata normal form. 2/808 useless extension candidates. Maximal degree in co-relation 5563. Up to 655 conditions per place. [2024-06-28 02:22:58,680 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 126 selfloop transitions, 42 changer transitions 0/170 dead transitions. [2024-06-28 02:22:58,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 170 transitions, 2100 flow [2024-06-28 02:22:58,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:22:58,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:22:58,681 INFO L175 Difference]: Start difference. First operand has 165 places, 154 transitions, 1694 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:22:58,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 170 transitions, 2100 flow [2024-06-28 02:22:58,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 170 transitions, 1964 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:58,741 INFO L231 Difference]: Finished difference. Result has 167 places, 156 transitions, 1682 flow [2024-06-28 02:22:58,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1682, PETRI_PLACES=167, PETRI_TRANSITIONS=156} [2024-06-28 02:22:58,742 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-28 02:22:58,742 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 156 transitions, 1682 flow [2024-06-28 02:22:58,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:58,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:58,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:58,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:22:58,743 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:58,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1349697090, now seen corresponding path program 1 times [2024-06-28 02:22:58,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:58,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485026556] [2024-06-28 02:22:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:58,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:59,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:59,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485026556] [2024-06-28 02:22:59,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485026556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:59,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:59,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:59,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926197517] [2024-06-28 02:22:59,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:59,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:59,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:59,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:59,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:59,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 156 transitions, 1682 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:59,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:59,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:59,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:00,309 INFO L124 PetriNetUnfolderBase]: 468/818 cut-off events. [2024-06-28 02:23:00,309 INFO L125 PetriNetUnfolderBase]: For 38302/38302 co-relation queries the response was YES. [2024-06-28 02:23:00,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5685 conditions, 818 events. 468/818 cut-off events. For 38302/38302 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3642 event pairs, 89 based on Foata normal form. 2/819 useless extension candidates. Maximal degree in co-relation 5604. Up to 717 conditions per place. [2024-06-28 02:23:00,315 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 141 selfloop transitions, 31 changer transitions 0/174 dead transitions. [2024-06-28 02:23:00,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 174 transitions, 2118 flow [2024-06-28 02:23:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:00,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:23:00,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-28 02:23:00,317 INFO L175 Difference]: Start difference. First operand has 167 places, 156 transitions, 1682 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:23:00,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 174 transitions, 2118 flow [2024-06-28 02:23:00,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 174 transitions, 2016 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:00,380 INFO L231 Difference]: Finished difference. Result has 170 places, 158 transitions, 1681 flow [2024-06-28 02:23:00,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1681, PETRI_PLACES=170, PETRI_TRANSITIONS=158} [2024-06-28 02:23:00,381 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-28 02:23:00,381 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 158 transitions, 1681 flow [2024-06-28 02:23:00,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:00,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:00,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:00,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:23:00,381 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:00,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:00,382 INFO L85 PathProgramCache]: Analyzing trace with hash -404450170, now seen corresponding path program 4 times [2024-06-28 02:23:00,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:00,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529740674] [2024-06-28 02:23:00,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:00,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:01,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:01,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529740674] [2024-06-28 02:23:01,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529740674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:01,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:01,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:01,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740163209] [2024-06-28 02:23:01,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:01,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:01,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:01,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:01,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:01,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 158 transitions, 1681 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:01,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:01,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:01,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:01,840 INFO L124 PetriNetUnfolderBase]: 465/813 cut-off events. [2024-06-28 02:23:01,840 INFO L125 PetriNetUnfolderBase]: For 37473/37473 co-relation queries the response was YES. [2024-06-28 02:23:01,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5576 conditions, 813 events. 465/813 cut-off events. For 37473/37473 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3589 event pairs, 79 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 5494. Up to 682 conditions per place. [2024-06-28 02:23:01,848 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 130 selfloop transitions, 39 changer transitions 0/171 dead transitions. [2024-06-28 02:23:01,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 171 transitions, 2062 flow [2024-06-28 02:23:01,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 02:23:01,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-28 02:23:01,852 INFO L175 Difference]: Start difference. First operand has 170 places, 158 transitions, 1681 flow. Second operand 9 states and 100 transitions. [2024-06-28 02:23:01,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 171 transitions, 2062 flow [2024-06-28 02:23:01,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 171 transitions, 1981 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:01,934 INFO L231 Difference]: Finished difference. Result has 171 places, 158 transitions, 1684 flow [2024-06-28 02:23:01,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1684, PETRI_PLACES=171, PETRI_TRANSITIONS=158} [2024-06-28 02:23:01,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-28 02:23:01,935 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 158 transitions, 1684 flow [2024-06-28 02:23:01,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:01,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:01,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:01,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:23:01,936 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:01,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash 963596804, now seen corresponding path program 5 times [2024-06-28 02:23:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:01,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334116479] [2024-06-28 02:23:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:01,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:02,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:02,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334116479] [2024-06-28 02:23:02,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334116479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:02,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:02,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:02,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237144986] [2024-06-28 02:23:02,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:02,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:02,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:02,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:02,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:02,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:02,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 158 transitions, 1684 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:02,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:02,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:02,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:03,281 INFO L124 PetriNetUnfolderBase]: 471/823 cut-off events. [2024-06-28 02:23:03,281 INFO L125 PetriNetUnfolderBase]: For 39250/39252 co-relation queries the response was YES. [2024-06-28 02:23:03,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5659 conditions, 823 events. 471/823 cut-off events. For 39250/39252 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3656 event pairs, 78 based on Foata normal form. 2/824 useless extension candidates. Maximal degree in co-relation 5576. Up to 657 conditions per place. [2024-06-28 02:23:03,287 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 46 changer transitions 0/175 dead transitions. [2024-06-28 02:23:03,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 175 transitions, 2108 flow [2024-06-28 02:23:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:03,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 02:23:03,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 02:23:03,289 INFO L175 Difference]: Start difference. First operand has 171 places, 158 transitions, 1684 flow. Second operand 9 states and 104 transitions. [2024-06-28 02:23:03,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 175 transitions, 2108 flow [2024-06-28 02:23:03,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 175 transitions, 2004 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:03,369 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 1712 flow [2024-06-28 02:23:03,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1712, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2024-06-28 02:23:03,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-28 02:23:03,369 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 1712 flow [2024-06-28 02:23:03,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:03,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:03,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:03,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:23:03,370 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:03,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:03,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1396648694, now seen corresponding path program 6 times [2024-06-28 02:23:03,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:03,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408951962] [2024-06-28 02:23:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:03,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:04,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:04,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408951962] [2024-06-28 02:23:04,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408951962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:04,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:04,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:04,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062683326] [2024-06-28 02:23:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:04,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:04,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:04,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:04,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 1712 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:04,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:04,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:04,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:04,623 INFO L124 PetriNetUnfolderBase]: 497/865 cut-off events. [2024-06-28 02:23:04,624 INFO L125 PetriNetUnfolderBase]: For 46001/46003 co-relation queries the response was YES. [2024-06-28 02:23:04,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6157 conditions, 865 events. 497/865 cut-off events. For 46001/46003 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3876 event pairs, 71 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 6073. Up to 476 conditions per place. [2024-06-28 02:23:04,631 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 109 selfloop transitions, 77 changer transitions 0/188 dead transitions. [2024-06-28 02:23:04,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 188 transitions, 2574 flow [2024-06-28 02:23:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 02:23:04,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 02:23:04,632 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 1712 flow. Second operand 9 states and 112 transitions. [2024-06-28 02:23:04,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 188 transitions, 2574 flow [2024-06-28 02:23:04,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 188 transitions, 2411 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:04,719 INFO L231 Difference]: Finished difference. Result has 173 places, 168 transitions, 1848 flow [2024-06-28 02:23:04,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1848, PETRI_PLACES=173, PETRI_TRANSITIONS=168} [2024-06-28 02:23:04,719 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-28 02:23:04,720 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 1848 flow [2024-06-28 02:23:04,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:04,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:04,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:04,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:23:04,720 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:04,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1396642184, now seen corresponding path program 7 times [2024-06-28 02:23:04,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:04,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584244414] [2024-06-28 02:23:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:04,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:05,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:05,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584244414] [2024-06-28 02:23:05,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584244414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:05,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:05,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:05,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945039401] [2024-06-28 02:23:05,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:05,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:05,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:05,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:05,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:05,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 168 transitions, 1848 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:05,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:05,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:05,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:05,865 INFO L124 PetriNetUnfolderBase]: 493/859 cut-off events. [2024-06-28 02:23:05,865 INFO L125 PetriNetUnfolderBase]: For 45431/45433 co-relation queries the response was YES. [2024-06-28 02:23:05,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6030 conditions, 859 events. 493/859 cut-off events. For 45431/45433 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3852 event pairs, 71 based on Foata normal form. 2/860 useless extension candidates. Maximal degree in co-relation 5947. Up to 473 conditions per place. [2024-06-28 02:23:05,870 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 78 changer transitions 0/185 dead transitions. [2024-06-28 02:23:05,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 185 transitions, 2464 flow [2024-06-28 02:23:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 02:23:05,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:23:05,871 INFO L175 Difference]: Start difference. First operand has 173 places, 168 transitions, 1848 flow. Second operand 9 states and 108 transitions. [2024-06-28 02:23:05,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 185 transitions, 2464 flow [2024-06-28 02:23:05,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 185 transitions, 2361 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:05,962 INFO L231 Difference]: Finished difference. Result has 179 places, 168 transitions, 1906 flow [2024-06-28 02:23:05,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1906, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2024-06-28 02:23:05,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-28 02:23:05,963 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 1906 flow [2024-06-28 02:23:05,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:05,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:05,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:05,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:23:05,964 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:05,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash 331680210, now seen corresponding path program 2 times [2024-06-28 02:23:05,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:05,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555967104] [2024-06-28 02:23:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:07,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:07,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555967104] [2024-06-28 02:23:07,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555967104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:07,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:07,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:07,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980376811] [2024-06-28 02:23:07,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:07,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:07,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:07,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:07,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:07,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:07,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 1906 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:07,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:07,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:07,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:07,730 INFO L124 PetriNetUnfolderBase]: 499/869 cut-off events. [2024-06-28 02:23:07,730 INFO L125 PetriNetUnfolderBase]: For 47156/47158 co-relation queries the response was YES. [2024-06-28 02:23:07,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 869 events. 499/869 cut-off events. For 47156/47158 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3916 event pairs, 87 based on Foata normal form. 2/870 useless extension candidates. Maximal degree in co-relation 6138. Up to 748 conditions per place. [2024-06-28 02:23:07,737 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 40 changer transitions 0/184 dead transitions. [2024-06-28 02:23:07,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 184 transitions, 2354 flow [2024-06-28 02:23:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:07,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:23:07,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-28 02:23:07,738 INFO L175 Difference]: Start difference. First operand has 179 places, 168 transitions, 1906 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:23:07,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 184 transitions, 2354 flow [2024-06-28 02:23:07,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 184 transitions, 2189 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:07,839 INFO L231 Difference]: Finished difference. Result has 181 places, 170 transitions, 1864 flow [2024-06-28 02:23:07,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1864, PETRI_PLACES=181, PETRI_TRANSITIONS=170} [2024-06-28 02:23:07,840 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-28 02:23:07,840 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 170 transitions, 1864 flow [2024-06-28 02:23:07,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:07,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:07,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:07,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:23:07,841 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:07,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1790913032, now seen corresponding path program 8 times [2024-06-28 02:23:07,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:07,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533006701] [2024-06-28 02:23:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:07,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:08,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:08,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533006701] [2024-06-28 02:23:08,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533006701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:08,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:08,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:08,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667621510] [2024-06-28 02:23:08,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:08,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:08,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:08,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:08,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:08,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 170 transitions, 1864 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:08,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:08,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:08,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:09,011 INFO L124 PetriNetUnfolderBase]: 511/889 cut-off events. [2024-06-28 02:23:09,012 INFO L125 PetriNetUnfolderBase]: For 48752/48754 co-relation queries the response was YES. [2024-06-28 02:23:09,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 889 events. 511/889 cut-off events. For 48752/48754 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4036 event pairs, 82 based on Foata normal form. 2/890 useless extension candidates. Maximal degree in co-relation 6168. Up to 730 conditions per place. [2024-06-28 02:23:09,018 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 44 changer transitions 0/189 dead transitions. [2024-06-28 02:23:09,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 189 transitions, 2336 flow [2024-06-28 02:23:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:23:09,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-28 02:23:09,033 INFO L175 Difference]: Start difference. First operand has 181 places, 170 transitions, 1864 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:23:09,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 189 transitions, 2336 flow [2024-06-28 02:23:09,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 189 transitions, 2235 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:09,121 INFO L231 Difference]: Finished difference. Result has 183 places, 174 transitions, 1918 flow [2024-06-28 02:23:09,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1918, PETRI_PLACES=183, PETRI_TRANSITIONS=174} [2024-06-28 02:23:09,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-28 02:23:09,121 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 174 transitions, 1918 flow [2024-06-28 02:23:09,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:09,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:09,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:09,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:23:09,122 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:09,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:09,122 INFO L85 PathProgramCache]: Analyzing trace with hash 616771152, now seen corresponding path program 9 times [2024-06-28 02:23:09,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:09,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197256368] [2024-06-28 02:23:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:09,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:09,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:09,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197256368] [2024-06-28 02:23:09,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197256368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:09,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:09,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:09,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438403990] [2024-06-28 02:23:09,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:09,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:09,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:09,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:09,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:09,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:09,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 174 transitions, 1918 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:09,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:09,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:09,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:10,241 INFO L124 PetriNetUnfolderBase]: 507/882 cut-off events. [2024-06-28 02:23:10,241 INFO L125 PetriNetUnfolderBase]: For 47970/47970 co-relation queries the response was YES. [2024-06-28 02:23:10,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6175 conditions, 882 events. 507/882 cut-off events. For 47970/47970 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3997 event pairs, 117 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 6087. Up to 851 conditions per place. [2024-06-28 02:23:10,248 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 167 selfloop transitions, 15 changer transitions 0/184 dead transitions. [2024-06-28 02:23:10,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 184 transitions, 2310 flow [2024-06-28 02:23:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 02:23:10,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-28 02:23:10,249 INFO L175 Difference]: Start difference. First operand has 183 places, 174 transitions, 1918 flow. Second operand 9 states and 90 transitions. [2024-06-28 02:23:10,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 184 transitions, 2310 flow [2024-06-28 02:23:10,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 184 transitions, 2183 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:10,351 INFO L231 Difference]: Finished difference. Result has 186 places, 174 transitions, 1826 flow [2024-06-28 02:23:10,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1826, PETRI_PLACES=186, PETRI_TRANSITIONS=174} [2024-06-28 02:23:10,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-28 02:23:10,352 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 174 transitions, 1826 flow [2024-06-28 02:23:10,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:10,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:10,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:10,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:23:10,360 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:10,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:10,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2035307044, now seen corresponding path program 3 times [2024-06-28 02:23:10,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:10,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599014221] [2024-06-28 02:23:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:10,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:11,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:11,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:11,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599014221] [2024-06-28 02:23:11,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599014221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:11,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:11,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:11,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953077416] [2024-06-28 02:23:11,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:11,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:11,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:11,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:11,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:11,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:11,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 174 transitions, 1826 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:11,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:11,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:11,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:12,003 INFO L124 PetriNetUnfolderBase]: 513/892 cut-off events. [2024-06-28 02:23:12,003 INFO L125 PetriNetUnfolderBase]: For 49292/49292 co-relation queries the response was YES. [2024-06-28 02:23:12,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 892 events. 513/892 cut-off events. For 49292/49292 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4044 event pairs, 100 based on Foata normal form. 2/893 useless extension candidates. Maximal degree in co-relation 6060. Up to 802 conditions per place. [2024-06-28 02:23:12,010 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 28 changer transitions 0/189 dead transitions. [2024-06-28 02:23:12,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 189 transitions, 2282 flow [2024-06-28 02:23:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 02:23:12,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-28 02:23:12,012 INFO L175 Difference]: Start difference. First operand has 186 places, 174 transitions, 1826 flow. Second operand 10 states and 104 transitions. [2024-06-28 02:23:12,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 189 transitions, 2282 flow [2024-06-28 02:23:12,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 189 transitions, 2247 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:12,103 INFO L231 Difference]: Finished difference. Result has 188 places, 176 transitions, 1894 flow [2024-06-28 02:23:12,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1894, PETRI_PLACES=188, PETRI_TRANSITIONS=176} [2024-06-28 02:23:12,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-28 02:23:12,104 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 176 transitions, 1894 flow [2024-06-28 02:23:12,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:12,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:12,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:12,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:23:12,104 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:12,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:12,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2028811614, now seen corresponding path program 2 times [2024-06-28 02:23:12,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:12,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974391711] [2024-06-28 02:23:12,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:12,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:13,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:13,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974391711] [2024-06-28 02:23:13,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974391711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:13,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:13,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:13,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813355409] [2024-06-28 02:23:13,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:13,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:13,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:13,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:13,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:13,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:13,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 176 transitions, 1894 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:13,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:13,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:13,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:13,824 INFO L124 PetriNetUnfolderBase]: 511/890 cut-off events. [2024-06-28 02:23:13,825 INFO L125 PetriNetUnfolderBase]: For 48334/48336 co-relation queries the response was YES. [2024-06-28 02:23:13,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6152 conditions, 890 events. 511/890 cut-off events. For 48334/48336 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4049 event pairs, 100 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 6062. Up to 798 conditions per place. [2024-06-28 02:23:13,831 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 156 selfloop transitions, 31 changer transitions 0/189 dead transitions. [2024-06-28 02:23:13,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 189 transitions, 2347 flow [2024-06-28 02:23:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:13,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 02:23:13,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 02:23:13,833 INFO L175 Difference]: Start difference. First operand has 188 places, 176 transitions, 1894 flow. Second operand 9 states and 96 transitions. [2024-06-28 02:23:13,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 189 transitions, 2347 flow [2024-06-28 02:23:13,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 189 transitions, 2266 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:13,941 INFO L231 Difference]: Finished difference. Result has 189 places, 178 transitions, 1930 flow [2024-06-28 02:23:13,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1930, PETRI_PLACES=189, PETRI_TRANSITIONS=178} [2024-06-28 02:23:13,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-28 02:23:13,942 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 178 transitions, 1930 flow [2024-06-28 02:23:13,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:13,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:13,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:13,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:23:13,943 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:13,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:13,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2028811366, now seen corresponding path program 10 times [2024-06-28 02:23:13,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:13,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692713235] [2024-06-28 02:23:13,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:13,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:14,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:14,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692713235] [2024-06-28 02:23:14,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692713235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:14,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:14,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:14,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010859488] [2024-06-28 02:23:14,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:14,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:14,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:14,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:14,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:14,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:14,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 178 transitions, 1930 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:14,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:14,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:14,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:15,213 INFO L124 PetriNetUnfolderBase]: 517/900 cut-off events. [2024-06-28 02:23:15,213 INFO L125 PetriNetUnfolderBase]: For 51584/51586 co-relation queries the response was YES. [2024-06-28 02:23:15,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6255 conditions, 900 events. 517/900 cut-off events. For 51584/51586 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4095 event pairs, 81 based on Foata normal form. 2/901 useless extension candidates. Maximal degree in co-relation 6164. Up to 696 conditions per place. [2024-06-28 02:23:15,225 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 139 selfloop transitions, 56 changer transitions 0/197 dead transitions. [2024-06-28 02:23:15,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 197 transitions, 2526 flow [2024-06-28 02:23:15,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:15,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 02:23:15,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-28 02:23:15,226 INFO L175 Difference]: Start difference. First operand has 189 places, 178 transitions, 1930 flow. Second operand 9 states and 107 transitions. [2024-06-28 02:23:15,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 197 transitions, 2526 flow [2024-06-28 02:23:15,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 197 transitions, 2438 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:15,331 INFO L231 Difference]: Finished difference. Result has 191 places, 180 transitions, 2002 flow [2024-06-28 02:23:15,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2002, PETRI_PLACES=191, PETRI_TRANSITIONS=180} [2024-06-28 02:23:15,331 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-28 02:23:15,332 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 180 transitions, 2002 flow [2024-06-28 02:23:15,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:15,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:15,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:15,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:23:15,332 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:15,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:15,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1681988132, now seen corresponding path program 4 times [2024-06-28 02:23:15,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:15,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773250059] [2024-06-28 02:23:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:15,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:16,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:16,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773250059] [2024-06-28 02:23:16,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773250059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:16,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:16,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:16,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71398401] [2024-06-28 02:23:16,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:16,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:16,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:16,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:16,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:16,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:16,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 180 transitions, 2002 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:16,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:16,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:16,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:16,725 INFO L124 PetriNetUnfolderBase]: 518/902 cut-off events. [2024-06-28 02:23:16,725 INFO L125 PetriNetUnfolderBase]: For 52099/52101 co-relation queries the response was YES. [2024-06-28 02:23:16,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 902 events. 518/902 cut-off events. For 52099/52101 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4125 event pairs, 85 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 6239. Up to 655 conditions per place. [2024-06-28 02:23:16,733 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 129 selfloop transitions, 66 changer transitions 0/197 dead transitions. [2024-06-28 02:23:16,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 197 transitions, 2600 flow [2024-06-28 02:23:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:16,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:23:16,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:23:16,734 INFO L175 Difference]: Start difference. First operand has 191 places, 180 transitions, 2002 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:23:16,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 197 transitions, 2600 flow [2024-06-28 02:23:16,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 197 transitions, 2388 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:16,827 INFO L231 Difference]: Finished difference. Result has 193 places, 182 transitions, 1971 flow [2024-06-28 02:23:16,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1971, PETRI_PLACES=193, PETRI_TRANSITIONS=182} [2024-06-28 02:23:16,828 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-28 02:23:16,828 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 182 transitions, 1971 flow [2024-06-28 02:23:16,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:16,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:16,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:16,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:23:16,829 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:16,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:16,829 INFO L85 PathProgramCache]: Analyzing trace with hash 963423824, now seen corresponding path program 11 times [2024-06-28 02:23:16,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:16,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866778249] [2024-06-28 02:23:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:16,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:17,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866778249] [2024-06-28 02:23:17,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866778249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:17,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:17,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:17,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481268554] [2024-06-28 02:23:17,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:17,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:17,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:17,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:17,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:17,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:17,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 182 transitions, 1971 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:17,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:17,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:17,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:17,976 INFO L124 PetriNetUnfolderBase]: 514/896 cut-off events. [2024-06-28 02:23:17,976 INFO L125 PetriNetUnfolderBase]: For 50156/50158 co-relation queries the response was YES. [2024-06-28 02:23:17,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 896 events. 514/896 cut-off events. For 50156/50158 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4094 event pairs, 91 based on Foata normal form. 2/897 useless extension candidates. Maximal degree in co-relation 5994. Up to 755 conditions per place. [2024-06-28 02:23:17,984 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 39 changer transitions 0/195 dead transitions. [2024-06-28 02:23:17,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 195 transitions, 2395 flow [2024-06-28 02:23:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 02:23:17,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-28 02:23:17,985 INFO L175 Difference]: Start difference. First operand has 193 places, 182 transitions, 1971 flow. Second operand 9 states and 100 transitions. [2024-06-28 02:23:17,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 195 transitions, 2395 flow [2024-06-28 02:23:18,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 195 transitions, 2209 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:18,087 INFO L231 Difference]: Finished difference. Result has 194 places, 182 transitions, 1868 flow [2024-06-28 02:23:18,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1868, PETRI_PLACES=194, PETRI_TRANSITIONS=182} [2024-06-28 02:23:18,088 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-28 02:23:18,088 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 182 transitions, 1868 flow [2024-06-28 02:23:18,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:18,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:18,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:18,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:23:18,089 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:18,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1692107462, now seen corresponding path program 5 times [2024-06-28 02:23:18,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:18,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043851000] [2024-06-28 02:23:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:18,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:19,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:19,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043851000] [2024-06-28 02:23:19,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043851000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:19,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:19,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:19,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515701418] [2024-06-28 02:23:19,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:19,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:19,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:19,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:19,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:19,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:19,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 182 transitions, 1868 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:19,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:19,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:19,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:19,390 INFO L124 PetriNetUnfolderBase]: 510/889 cut-off events. [2024-06-28 02:23:19,391 INFO L125 PetriNetUnfolderBase]: For 48119/48119 co-relation queries the response was YES. [2024-06-28 02:23:19,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5830 conditions, 889 events. 510/889 cut-off events. For 48119/48119 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4058 event pairs, 121 based on Foata normal form. 2/890 useless extension candidates. Maximal degree in co-relation 5737. Up to 844 conditions per place. [2024-06-28 02:23:19,398 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 172 selfloop transitions, 19 changer transitions 0/193 dead transitions. [2024-06-28 02:23:19,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 193 transitions, 2282 flow [2024-06-28 02:23:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:19,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 02:23:19,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-28 02:23:19,417 INFO L175 Difference]: Start difference. First operand has 194 places, 182 transitions, 1868 flow. Second operand 10 states and 100 transitions. [2024-06-28 02:23:19,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 193 transitions, 2282 flow [2024-06-28 02:23:19,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 193 transitions, 2174 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:19,523 INFO L231 Difference]: Finished difference. Result has 196 places, 182 transitions, 1803 flow [2024-06-28 02:23:19,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1803, PETRI_PLACES=196, PETRI_TRANSITIONS=182} [2024-06-28 02:23:19,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-28 02:23:19,523 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 182 transitions, 1803 flow [2024-06-28 02:23:19,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:19,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:19,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:19,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:23:19,524 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:19,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 632535685, now seen corresponding path program 1 times [2024-06-28 02:23:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:19,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205001952] [2024-06-28 02:23:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:19,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:20,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:20,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205001952] [2024-06-28 02:23:20,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205001952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:20,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:20,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:20,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634542133] [2024-06-28 02:23:20,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:20,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:20,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:20,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:20,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:20,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:20,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 182 transitions, 1803 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:20,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:20,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:20,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:20,988 INFO L124 PetriNetUnfolderBase]: 514/897 cut-off events. [2024-06-28 02:23:20,989 INFO L125 PetriNetUnfolderBase]: For 47935/47935 co-relation queries the response was YES. [2024-06-28 02:23:20,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5790 conditions, 897 events. 514/897 cut-off events. For 47935/47935 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4094 event pairs, 86 based on Foata normal form. 2/898 useless extension candidates. Maximal degree in co-relation 5696. Up to 782 conditions per place. [2024-06-28 02:23:20,995 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 163 selfloop transitions, 33 changer transitions 0/198 dead transitions. [2024-06-28 02:23:20,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 198 transitions, 2249 flow [2024-06-28 02:23:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:20,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 02:23:20,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-28 02:23:20,997 INFO L175 Difference]: Start difference. First operand has 196 places, 182 transitions, 1803 flow. Second operand 9 states and 98 transitions. [2024-06-28 02:23:20,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 198 transitions, 2249 flow [2024-06-28 02:23:21,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 198 transitions, 2211 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:21,108 INFO L231 Difference]: Finished difference. Result has 196 places, 183 transitions, 1854 flow [2024-06-28 02:23:21,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1854, PETRI_PLACES=196, PETRI_TRANSITIONS=183} [2024-06-28 02:23:21,109 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-28 02:23:21,109 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 183 transitions, 1854 flow [2024-06-28 02:23:21,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:21,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:21,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:21,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:23:21,110 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:21,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:21,110 INFO L85 PathProgramCache]: Analyzing trace with hash 632531965, now seen corresponding path program 2 times [2024-06-28 02:23:21,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:21,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321763480] [2024-06-28 02:23:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:21,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:21,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:21,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321763480] [2024-06-28 02:23:21,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321763480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:21,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:21,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:21,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339123613] [2024-06-28 02:23:21,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:21,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:21,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:21,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:21,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:21,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 183 transitions, 1854 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:21,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:21,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:21,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:22,204 INFO L124 PetriNetUnfolderBase]: 518/905 cut-off events. [2024-06-28 02:23:22,205 INFO L125 PetriNetUnfolderBase]: For 49799/49799 co-relation queries the response was YES. [2024-06-28 02:23:22,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5911 conditions, 905 events. 518/905 cut-off events. For 49799/49799 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4147 event pairs, 86 based on Foata normal form. 2/906 useless extension candidates. Maximal degree in co-relation 5816. Up to 804 conditions per place. [2024-06-28 02:23:22,212 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 171 selfloop transitions, 26 changer transitions 0/199 dead transitions. [2024-06-28 02:23:22,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 199 transitions, 2302 flow [2024-06-28 02:23:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:23:22,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-28 02:23:22,221 INFO L175 Difference]: Start difference. First operand has 196 places, 183 transitions, 1854 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:23:22,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 199 transitions, 2302 flow [2024-06-28 02:23:22,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 199 transitions, 2229 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:22,327 INFO L231 Difference]: Finished difference. Result has 198 places, 184 transitions, 1855 flow [2024-06-28 02:23:22,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1855, PETRI_PLACES=198, PETRI_TRANSITIONS=184} [2024-06-28 02:23:22,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-28 02:23:22,328 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 184 transitions, 1855 flow [2024-06-28 02:23:22,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:22,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:22,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:22,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:23:22,329 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:22,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1523616895, now seen corresponding path program 3 times [2024-06-28 02:23:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:22,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931363162] [2024-06-28 02:23:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:22,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:23,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931363162] [2024-06-28 02:23:23,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931363162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:23,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:23,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:23,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842579575] [2024-06-28 02:23:23,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:23,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:23,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:23,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:23,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:23,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:23,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 184 transitions, 1855 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:23,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:23,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:23,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:23,775 INFO L124 PetriNetUnfolderBase]: 535/940 cut-off events. [2024-06-28 02:23:23,775 INFO L125 PetriNetUnfolderBase]: For 51629/51629 co-relation queries the response was YES. [2024-06-28 02:23:23,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6038 conditions, 940 events. 535/940 cut-off events. For 51629/51629 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4411 event pairs, 89 based on Foata normal form. 2/941 useless extension candidates. Maximal degree in co-relation 5942. Up to 834 conditions per place. [2024-06-28 02:23:23,783 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 183 selfloop transitions, 25 changer transitions 0/210 dead transitions. [2024-06-28 02:23:23,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 210 transitions, 2382 flow [2024-06-28 02:23:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:23:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:23:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:23:23,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-28 02:23:23,784 INFO L175 Difference]: Start difference. First operand has 198 places, 184 transitions, 1855 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:23:23,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 210 transitions, 2382 flow [2024-06-28 02:23:23,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 210 transitions, 2315 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:23,883 INFO L231 Difference]: Finished difference. Result has 205 places, 189 transitions, 1906 flow [2024-06-28 02:23:23,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1906, PETRI_PLACES=205, PETRI_TRANSITIONS=189} [2024-06-28 02:23:23,884 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-28 02:23:23,884 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 189 transitions, 1906 flow [2024-06-28 02:23:23,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:23,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:23,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:23,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:23:23,885 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:23,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1435047260, now seen corresponding path program 1 times [2024-06-28 02:23:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:23,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917693753] [2024-06-28 02:23:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:24,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:24,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917693753] [2024-06-28 02:23:24,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917693753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:24,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:24,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:24,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451447650] [2024-06-28 02:23:24,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:24,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:24,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:24,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:24,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:24,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:24,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 189 transitions, 1906 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:24,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:24,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:24,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:25,224 INFO L124 PetriNetUnfolderBase]: 533/937 cut-off events. [2024-06-28 02:23:25,224 INFO L125 PetriNetUnfolderBase]: For 49617/49617 co-relation queries the response was YES. [2024-06-28 02:23:25,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6002 conditions, 937 events. 533/937 cut-off events. For 49617/49617 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4427 event pairs, 90 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 5902. Up to 817 conditions per place. [2024-06-28 02:23:25,230 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 165 selfloop transitions, 37 changer transitions 0/204 dead transitions. [2024-06-28 02:23:25,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 204 transitions, 2352 flow [2024-06-28 02:23:25,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:23:25,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:23:25,231 INFO L175 Difference]: Start difference. First operand has 205 places, 189 transitions, 1906 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:23:25,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 204 transitions, 2352 flow [2024-06-28 02:23:25,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 204 transitions, 2269 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:25,339 INFO L231 Difference]: Finished difference. Result has 208 places, 189 transitions, 1907 flow [2024-06-28 02:23:25,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1907, PETRI_PLACES=208, PETRI_TRANSITIONS=189} [2024-06-28 02:23:25,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-28 02:23:25,339 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 189 transitions, 1907 flow [2024-06-28 02:23:25,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:25,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:25,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:25,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:23:25,340 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:25,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:25,340 INFO L85 PathProgramCache]: Analyzing trace with hash -255304339, now seen corresponding path program 1 times [2024-06-28 02:23:25,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:25,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276435367] [2024-06-28 02:23:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:25,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:26,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:26,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276435367] [2024-06-28 02:23:26,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276435367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:26,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:26,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:26,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42565520] [2024-06-28 02:23:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:26,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:26,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:26,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:26,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:26,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:26,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 189 transitions, 1907 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:26,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:26,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:26,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:26,953 INFO L124 PetriNetUnfolderBase]: 539/947 cut-off events. [2024-06-28 02:23:26,953 INFO L125 PetriNetUnfolderBase]: For 52546/52546 co-relation queries the response was YES. [2024-06-28 02:23:26,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 947 events. 539/947 cut-off events. For 52546/52546 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4469 event pairs, 81 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 6006. Up to 836 conditions per place. [2024-06-28 02:23:26,961 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 30 changer transitions 0/208 dead transitions. [2024-06-28 02:23:26,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 208 transitions, 2403 flow [2024-06-28 02:23:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:23:26,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 02:23:26,962 INFO L175 Difference]: Start difference. First operand has 208 places, 189 transitions, 1907 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:23:26,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 208 transitions, 2403 flow [2024-06-28 02:23:27,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 208 transitions, 2301 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:27,070 INFO L231 Difference]: Finished difference. Result has 210 places, 191 transitions, 1910 flow [2024-06-28 02:23:27,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1910, PETRI_PLACES=210, PETRI_TRANSITIONS=191} [2024-06-28 02:23:27,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-28 02:23:27,070 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 191 transitions, 1910 flow [2024-06-28 02:23:27,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:27,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:27,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:27,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:23:27,071 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:27,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:27,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1713531, now seen corresponding path program 4 times [2024-06-28 02:23:27,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:27,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897642540] [2024-06-28 02:23:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:27,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:28,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:28,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897642540] [2024-06-28 02:23:28,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897642540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:28,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:28,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:28,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893043088] [2024-06-28 02:23:28,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:28,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:28,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:28,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:28,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:28,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:28,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 191 transitions, 1910 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:28,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:28,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:28,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:28,547 INFO L124 PetriNetUnfolderBase]: 543/955 cut-off events. [2024-06-28 02:23:28,548 INFO L125 PetriNetUnfolderBase]: For 54491/54491 co-relation queries the response was YES. [2024-06-28 02:23:28,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6165 conditions, 955 events. 543/955 cut-off events. For 54491/54491 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4533 event pairs, 78 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 6063. Up to 807 conditions per place. [2024-06-28 02:23:28,556 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 163 selfloop transitions, 41 changer transitions 0/206 dead transitions. [2024-06-28 02:23:28,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 206 transitions, 2376 flow [2024-06-28 02:23:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:28,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:23:28,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-28 02:23:28,557 INFO L175 Difference]: Start difference. First operand has 210 places, 191 transitions, 1910 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:23:28,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 206 transitions, 2376 flow [2024-06-28 02:23:28,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 206 transitions, 2287 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:28,683 INFO L231 Difference]: Finished difference. Result has 211 places, 192 transitions, 1930 flow [2024-06-28 02:23:28,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1930, PETRI_PLACES=211, PETRI_TRANSITIONS=192} [2024-06-28 02:23:28,684 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-28 02:23:28,684 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 192 transitions, 1930 flow [2024-06-28 02:23:28,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:28,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:28,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:28,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:23:28,685 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:28,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:28,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1717251, now seen corresponding path program 5 times [2024-06-28 02:23:28,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:28,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162453422] [2024-06-28 02:23:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:28,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:29,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:29,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162453422] [2024-06-28 02:23:29,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162453422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:29,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:29,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:29,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52250524] [2024-06-28 02:23:29,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:29,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:29,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:29,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:29,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:29,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 192 transitions, 1930 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:29,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:29,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:29,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:30,124 INFO L124 PetriNetUnfolderBase]: 547/963 cut-off events. [2024-06-28 02:23:30,124 INFO L125 PetriNetUnfolderBase]: For 57591/57591 co-relation queries the response was YES. [2024-06-28 02:23:30,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6237 conditions, 963 events. 547/963 cut-off events. For 57591/57591 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4583 event pairs, 76 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 6134. Up to 823 conditions per place. [2024-06-28 02:23:30,132 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 167 selfloop transitions, 38 changer transitions 0/207 dead transitions. [2024-06-28 02:23:30,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 2398 flow [2024-06-28 02:23:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 02:23:30,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-28 02:23:30,134 INFO L175 Difference]: Start difference. First operand has 211 places, 192 transitions, 1930 flow. Second operand 9 states and 100 transitions. [2024-06-28 02:23:30,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 2398 flow [2024-06-28 02:23:30,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 207 transitions, 2301 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:30,279 INFO L231 Difference]: Finished difference. Result has 213 places, 193 transitions, 1937 flow [2024-06-28 02:23:30,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1937, PETRI_PLACES=213, PETRI_TRANSITIONS=193} [2024-06-28 02:23:30,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-28 02:23:30,279 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 193 transitions, 1937 flow [2024-06-28 02:23:30,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:30,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:30,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:30,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:23:30,280 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:30,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash 4008480, now seen corresponding path program 1 times [2024-06-28 02:23:30,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:30,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609936434] [2024-06-28 02:23:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:30,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:32,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:32,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609936434] [2024-06-28 02:23:32,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609936434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:32,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:32,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:32,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403770332] [2024-06-28 02:23:32,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:32,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:32,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:32,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:32,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:32,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:32,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 193 transitions, 1937 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:32,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:32,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:32,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:33,196 INFO L124 PetriNetUnfolderBase]: 550/968 cut-off events. [2024-06-28 02:23:33,197 INFO L125 PetriNetUnfolderBase]: For 57364/57364 co-relation queries the response was YES. [2024-06-28 02:23:33,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6285 conditions, 968 events. 550/968 cut-off events. For 57364/57364 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4626 event pairs, 97 based on Foata normal form. 1/968 useless extension candidates. Maximal degree in co-relation 6181. Up to 851 conditions per place. [2024-06-28 02:23:33,204 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 41 changer transitions 0/210 dead transitions. [2024-06-28 02:23:33,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 210 transitions, 2447 flow [2024-06-28 02:23:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:23:33,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-28 02:23:33,206 INFO L175 Difference]: Start difference. First operand has 213 places, 193 transitions, 1937 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:23:33,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 210 transitions, 2447 flow [2024-06-28 02:23:33,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 210 transitions, 2353 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:33,320 INFO L231 Difference]: Finished difference. Result has 216 places, 195 transitions, 1981 flow [2024-06-28 02:23:33,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1981, PETRI_PLACES=216, PETRI_TRANSITIONS=195} [2024-06-28 02:23:33,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-28 02:23:33,321 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 195 transitions, 1981 flow [2024-06-28 02:23:33,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:33,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:33,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:33,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:23:33,322 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:33,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:33,322 INFO L85 PathProgramCache]: Analyzing trace with hash 3792999, now seen corresponding path program 6 times [2024-06-28 02:23:33,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:33,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970380260] [2024-06-28 02:23:33,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:33,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:34,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:34,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970380260] [2024-06-28 02:23:34,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970380260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:34,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:34,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:34,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698795516] [2024-06-28 02:23:34,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:34,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:34,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:34,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:34,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:34,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:34,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 195 transitions, 1981 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:34,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:34,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:34,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:34,580 INFO L124 PetriNetUnfolderBase]: 554/976 cut-off events. [2024-06-28 02:23:34,580 INFO L125 PetriNetUnfolderBase]: For 61150/61150 co-relation queries the response was YES. [2024-06-28 02:23:34,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 976 events. 554/976 cut-off events. For 61150/61150 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4687 event pairs, 69 based on Foata normal form. 2/977 useless extension candidates. Maximal degree in co-relation 6244. Up to 772 conditions per place. [2024-06-28 02:23:34,587 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 150 selfloop transitions, 60 changer transitions 0/212 dead transitions. [2024-06-28 02:23:34,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 212 transitions, 2473 flow [2024-06-28 02:23:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:23:34,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-28 02:23:34,589 INFO L175 Difference]: Start difference. First operand has 216 places, 195 transitions, 1981 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:23:34,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 212 transitions, 2473 flow [2024-06-28 02:23:34,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 212 transitions, 2361 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:34,715 INFO L231 Difference]: Finished difference. Result has 217 places, 196 transitions, 2020 flow [2024-06-28 02:23:34,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1869, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2020, PETRI_PLACES=217, PETRI_TRANSITIONS=196} [2024-06-28 02:23:34,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-28 02:23:34,716 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 196 transitions, 2020 flow [2024-06-28 02:23:34,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:34,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:34,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:34,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:23:34,717 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:34,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash 4000761, now seen corresponding path program 2 times [2024-06-28 02:23:34,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:34,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622079571] [2024-06-28 02:23:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:34,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:35,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:35,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622079571] [2024-06-28 02:23:35,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622079571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:35,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:35,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:35,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974670266] [2024-06-28 02:23:35,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:35,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:35,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:35,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:35,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:35,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:35,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 196 transitions, 2020 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:35,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:35,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:35,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:36,406 INFO L124 PetriNetUnfolderBase]: 580/1018 cut-off events. [2024-06-28 02:23:36,406 INFO L125 PetriNetUnfolderBase]: For 69854/69854 co-relation queries the response was YES. [2024-06-28 02:23:36,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6960 conditions, 1018 events. 580/1018 cut-off events. For 69854/69854 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4928 event pairs, 70 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 6854. Up to 701 conditions per place. [2024-06-28 02:23:36,414 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 75 changer transitions 0/223 dead transitions. [2024-06-28 02:23:36,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 223 transitions, 2912 flow [2024-06-28 02:23:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:23:36,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-28 02:23:36,416 INFO L175 Difference]: Start difference. First operand has 217 places, 196 transitions, 2020 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:23:36,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 223 transitions, 2912 flow [2024-06-28 02:23:36,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 223 transitions, 2773 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:36,594 INFO L231 Difference]: Finished difference. Result has 220 places, 202 transitions, 2160 flow [2024-06-28 02:23:36,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2160, PETRI_PLACES=220, PETRI_TRANSITIONS=202} [2024-06-28 02:23:36,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-28 02:23:36,597 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 202 transitions, 2160 flow [2024-06-28 02:23:36,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:36,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:36,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:36,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:23:36,597 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:36,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash -19997455, now seen corresponding path program 3 times [2024-06-28 02:23:36,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:36,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836230246] [2024-06-28 02:23:36,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:37,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836230246] [2024-06-28 02:23:37,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836230246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:37,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:37,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:37,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220913732] [2024-06-28 02:23:37,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:37,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:38,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:38,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 202 transitions, 2160 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:38,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:38,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:38,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:38,652 INFO L124 PetriNetUnfolderBase]: 586/1028 cut-off events. [2024-06-28 02:23:38,653 INFO L125 PetriNetUnfolderBase]: For 72253/72253 co-relation queries the response was YES. [2024-06-28 02:23:38,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7108 conditions, 1028 events. 586/1028 cut-off events. For 72253/72253 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4968 event pairs, 80 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 7001. Up to 868 conditions per place. [2024-06-28 02:23:38,661 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 174 selfloop transitions, 44 changer transitions 0/220 dead transitions. [2024-06-28 02:23:38,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 220 transitions, 2686 flow [2024-06-28 02:23:38,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:23:38,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-28 02:23:38,669 INFO L175 Difference]: Start difference. First operand has 220 places, 202 transitions, 2160 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:23:38,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 220 transitions, 2686 flow [2024-06-28 02:23:38,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 220 transitions, 2569 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:38,820 INFO L231 Difference]: Finished difference. Result has 225 places, 204 transitions, 2184 flow [2024-06-28 02:23:38,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2184, PETRI_PLACES=225, PETRI_TRANSITIONS=204} [2024-06-28 02:23:38,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-28 02:23:38,821 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 204 transitions, 2184 flow [2024-06-28 02:23:38,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:38,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:38,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:38,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:23:38,822 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:38,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:38,822 INFO L85 PathProgramCache]: Analyzing trace with hash 4008201, now seen corresponding path program 4 times [2024-06-28 02:23:38,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:38,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859228738] [2024-06-28 02:23:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:40,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:40,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859228738] [2024-06-28 02:23:40,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859228738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:40,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:40,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:40,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333105136] [2024-06-28 02:23:40,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:40,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:40,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:40,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:40,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:40,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:40,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 204 transitions, 2184 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:40,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:40,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:40,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:41,357 INFO L124 PetriNetUnfolderBase]: 665/1159 cut-off events. [2024-06-28 02:23:41,357 INFO L125 PetriNetUnfolderBase]: For 79552/79552 co-relation queries the response was YES. [2024-06-28 02:23:41,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8025 conditions, 1159 events. 665/1159 cut-off events. For 79552/79552 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5727 event pairs, 87 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 7916. Up to 897 conditions per place. [2024-06-28 02:23:41,367 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 70 changer transitions 0/259 dead transitions. [2024-06-28 02:23:41,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 259 transitions, 3276 flow [2024-06-28 02:23:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:23:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:23:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:23:41,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-28 02:23:41,369 INFO L175 Difference]: Start difference. First operand has 225 places, 204 transitions, 2184 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:23:41,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 259 transitions, 3276 flow [2024-06-28 02:23:41,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 259 transitions, 3116 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:41,566 INFO L231 Difference]: Finished difference. Result has 230 places, 230 transitions, 2563 flow [2024-06-28 02:23:41,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2065, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2563, PETRI_PLACES=230, PETRI_TRANSITIONS=230} [2024-06-28 02:23:41,567 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-28 02:23:41,567 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 230 transitions, 2563 flow [2024-06-28 02:23:41,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:41,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:41,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:41,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:23:41,568 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:41,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:41,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1449702565, now seen corresponding path program 5 times [2024-06-28 02:23:41,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:41,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375314239] [2024-06-28 02:23:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:41,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:42,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375314239] [2024-06-28 02:23:42,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375314239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:42,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:42,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353656715] [2024-06-28 02:23:42,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:42,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:42,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:42,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:43,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:43,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 230 transitions, 2563 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:43,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:43,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:43,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:43,420 INFO L124 PetriNetUnfolderBase]: 667/1163 cut-off events. [2024-06-28 02:23:43,420 INFO L125 PetriNetUnfolderBase]: For 81883/81883 co-relation queries the response was YES. [2024-06-28 02:23:43,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8119 conditions, 1163 events. 667/1163 cut-off events. For 81883/81883 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5765 event pairs, 74 based on Foata normal form. 4/1166 useless extension candidates. Maximal degree in co-relation 8007. Up to 935 conditions per place. [2024-06-28 02:23:43,430 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 67 changer transitions 0/252 dead transitions. [2024-06-28 02:23:43,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 252 transitions, 3221 flow [2024-06-28 02:23:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:23:43,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 02:23:43,432 INFO L175 Difference]: Start difference. First operand has 230 places, 230 transitions, 2563 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:23:43,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 252 transitions, 3221 flow [2024-06-28 02:23:43,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 252 transitions, 3082 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:43,650 INFO L231 Difference]: Finished difference. Result has 233 places, 234 transitions, 2676 flow [2024-06-28 02:23:43,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2676, PETRI_PLACES=233, PETRI_TRANSITIONS=234} [2024-06-28 02:23:43,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-28 02:23:43,651 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 234 transitions, 2676 flow [2024-06-28 02:23:43,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:43,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:43,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:43,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:23:43,652 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:43,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash -50109631, now seen corresponding path program 1 times [2024-06-28 02:23:43,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:43,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374756258] [2024-06-28 02:23:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:45,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:45,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374756258] [2024-06-28 02:23:45,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374756258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:45,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:45,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:45,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442791964] [2024-06-28 02:23:45,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:45,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:45,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:45,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:45,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:45,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:45,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 234 transitions, 2676 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:45,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:45,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:45,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:45,559 INFO L124 PetriNetUnfolderBase]: 675/1180 cut-off events. [2024-06-28 02:23:45,559 INFO L125 PetriNetUnfolderBase]: For 84380/84380 co-relation queries the response was YES. [2024-06-28 02:23:45,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8222 conditions, 1180 events. 675/1180 cut-off events. For 84380/84380 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5906 event pairs, 121 based on Foata normal form. 4/1183 useless extension candidates. Maximal degree in co-relation 8109. Up to 1047 conditions per place. [2024-06-28 02:23:45,570 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 36 changer transitions 0/254 dead transitions. [2024-06-28 02:23:45,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 254 transitions, 3270 flow [2024-06-28 02:23:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:23:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:23:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 02:23:45,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-28 02:23:45,571 INFO L175 Difference]: Start difference. First operand has 233 places, 234 transitions, 2676 flow. Second operand 11 states and 115 transitions. [2024-06-28 02:23:45,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 254 transitions, 3270 flow [2024-06-28 02:23:45,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 254 transitions, 3068 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:45,808 INFO L231 Difference]: Finished difference. Result has 236 places, 235 transitions, 2570 flow [2024-06-28 02:23:45,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2474, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2570, PETRI_PLACES=236, PETRI_TRANSITIONS=235} [2024-06-28 02:23:45,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-28 02:23:45,808 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 235 transitions, 2570 flow [2024-06-28 02:23:45,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:45,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:45,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:45,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:23:45,809 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:45,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1883792695, now seen corresponding path program 7 times [2024-06-28 02:23:45,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:45,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776926349] [2024-06-28 02:23:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:45,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:46,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:46,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776926349] [2024-06-28 02:23:46,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776926349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:46,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:46,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:46,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320924288] [2024-06-28 02:23:46,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:46,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:46,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:46,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:46,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:46,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 235 transitions, 2570 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:46,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:46,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:46,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:47,351 INFO L124 PetriNetUnfolderBase]: 679/1187 cut-off events. [2024-06-28 02:23:47,352 INFO L125 PetriNetUnfolderBase]: For 81018/81018 co-relation queries the response was YES. [2024-06-28 02:23:47,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8147 conditions, 1187 events. 679/1187 cut-off events. For 81018/81018 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5956 event pairs, 108 based on Foata normal form. 2/1188 useless extension candidates. Maximal degree in co-relation 8033. Up to 1049 conditions per place. [2024-06-28 02:23:47,362 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 209 selfloop transitions, 38 changer transitions 0/249 dead transitions. [2024-06-28 02:23:47,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 249 transitions, 3126 flow [2024-06-28 02:23:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:47,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:23:47,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:23:47,363 INFO L175 Difference]: Start difference. First operand has 236 places, 235 transitions, 2570 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:23:47,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 249 transitions, 3126 flow [2024-06-28 02:23:47,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 249 transitions, 3040 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:47,621 INFO L231 Difference]: Finished difference. Result has 236 places, 236 transitions, 2592 flow [2024-06-28 02:23:47,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2592, PETRI_PLACES=236, PETRI_TRANSITIONS=236} [2024-06-28 02:23:47,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-28 02:23:47,621 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 236 transitions, 2592 flow [2024-06-28 02:23:47,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:47,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:47,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:47,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:23:47,622 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:47,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:47,622 INFO L85 PathProgramCache]: Analyzing trace with hash 879409, now seen corresponding path program 6 times [2024-06-28 02:23:47,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:47,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579011685] [2024-06-28 02:23:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:47,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:49,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:49,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579011685] [2024-06-28 02:23:49,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579011685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:49,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:49,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:49,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257229411] [2024-06-28 02:23:49,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:49,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:49,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:49,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:49,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 236 transitions, 2592 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:49,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:49,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:49,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:50,193 INFO L124 PetriNetUnfolderBase]: 695/1214 cut-off events. [2024-06-28 02:23:50,193 INFO L125 PetriNetUnfolderBase]: For 88998/89000 co-relation queries the response was YES. [2024-06-28 02:23:50,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8504 conditions, 1214 events. 695/1214 cut-off events. For 88998/89000 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6111 event pairs, 100 based on Foata normal form. 2/1215 useless extension candidates. Maximal degree in co-relation 8389. Up to 1026 conditions per place. [2024-06-28 02:23:50,205 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 49 changer transitions 0/259 dead transitions. [2024-06-28 02:23:50,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 259 transitions, 3402 flow [2024-06-28 02:23:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:23:50,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:23:50,206 INFO L175 Difference]: Start difference. First operand has 236 places, 236 transitions, 2592 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:23:50,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 259 transitions, 3402 flow [2024-06-28 02:23:50,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 259 transitions, 3304 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:50,475 INFO L231 Difference]: Finished difference. Result has 239 places, 240 transitions, 2689 flow [2024-06-28 02:23:50,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2494, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2689, PETRI_PLACES=239, PETRI_TRANSITIONS=240} [2024-06-28 02:23:50,475 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-28 02:23:50,475 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 240 transitions, 2689 flow [2024-06-28 02:23:50,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:50,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:50,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:50,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:23:50,476 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:50,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash 346444891, now seen corresponding path program 7 times [2024-06-28 02:23:50,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:50,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539607601] [2024-06-28 02:23:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:50,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:51,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:51,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:51,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539607601] [2024-06-28 02:23:51,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539607601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:51,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:51,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:51,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012552392] [2024-06-28 02:23:51,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:51,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:51,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:51,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:51,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:52,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:52,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 240 transitions, 2689 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:52,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:52,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:52,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:52,717 INFO L124 PetriNetUnfolderBase]: 711/1240 cut-off events. [2024-06-28 02:23:52,717 INFO L125 PetriNetUnfolderBase]: For 97167/97169 co-relation queries the response was YES. [2024-06-28 02:23:52,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8925 conditions, 1240 events. 711/1240 cut-off events. For 97167/97169 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6282 event pairs, 70 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 8809. Up to 948 conditions per place. [2024-06-28 02:23:52,729 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 186 selfloop transitions, 77 changer transitions 0/265 dead transitions. [2024-06-28 02:23:52,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 265 transitions, 3531 flow [2024-06-28 02:23:52,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:52,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:23:52,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-28 02:23:52,730 INFO L175 Difference]: Start difference. First operand has 239 places, 240 transitions, 2689 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:23:52,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 265 transitions, 3531 flow [2024-06-28 02:23:53,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 265 transitions, 3427 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:53,023 INFO L231 Difference]: Finished difference. Result has 243 places, 244 transitions, 2844 flow [2024-06-28 02:23:53,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2844, PETRI_PLACES=243, PETRI_TRANSITIONS=244} [2024-06-28 02:23:53,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-28 02:23:53,023 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 244 transitions, 2844 flow [2024-06-28 02:23:53,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:53,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:53,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:53,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:23:53,024 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:53,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash 748938093, now seen corresponding path program 8 times [2024-06-28 02:23:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:53,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145326348] [2024-06-28 02:23:53,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:53,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:54,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:54,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145326348] [2024-06-28 02:23:54,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145326348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:54,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:54,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:54,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351119035] [2024-06-28 02:23:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:54,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:54,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:54,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:54,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:54,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:54,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 244 transitions, 2844 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:54,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:54,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:54,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:55,083 INFO L124 PetriNetUnfolderBase]: 717/1250 cut-off events. [2024-06-28 02:23:55,084 INFO L125 PetriNetUnfolderBase]: For 99963/99965 co-relation queries the response was YES. [2024-06-28 02:23:55,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 1250 events. 717/1250 cut-off events. For 99963/99965 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6339 event pairs, 107 based on Foata normal form. 2/1251 useless extension candidates. Maximal degree in co-relation 9052. Up to 1083 conditions per place. [2024-06-28 02:23:55,095 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 46 changer transitions 0/263 dead transitions. [2024-06-28 02:23:55,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 263 transitions, 3462 flow [2024-06-28 02:23:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:23:55,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:23:55,096 INFO L175 Difference]: Start difference. First operand has 243 places, 244 transitions, 2844 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:23:55,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 263 transitions, 3462 flow [2024-06-28 02:23:55,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 263 transitions, 3310 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:55,390 INFO L231 Difference]: Finished difference. Result has 247 places, 246 transitions, 2833 flow [2024-06-28 02:23:55,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2833, PETRI_PLACES=247, PETRI_TRANSITIONS=246} [2024-06-28 02:23:55,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-28 02:23:55,391 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 246 transitions, 2833 flow [2024-06-28 02:23:55,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:55,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:55,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:55,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:23:55,392 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:55,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash -198785453, now seen corresponding path program 8 times [2024-06-28 02:23:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:55,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826499882] [2024-06-28 02:23:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:55,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:56,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:56,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826499882] [2024-06-28 02:23:56,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826499882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:56,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:56,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:56,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228173722] [2024-06-28 02:23:56,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:56,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:56,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:56,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:56,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:56,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:56,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 246 transitions, 2833 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:56,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:56,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:56,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:56,978 INFO L124 PetriNetUnfolderBase]: 721/1258 cut-off events. [2024-06-28 02:23:56,979 INFO L125 PetriNetUnfolderBase]: For 102294/102296 co-relation queries the response was YES. [2024-06-28 02:23:56,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9248 conditions, 1258 events. 721/1258 cut-off events. For 102294/102296 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6402 event pairs, 116 based on Foata normal form. 2/1259 useless extension candidates. Maximal degree in co-relation 9128. Up to 1119 conditions per place. [2024-06-28 02:23:56,990 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 221 selfloop transitions, 37 changer transitions 0/260 dead transitions. [2024-06-28 02:23:56,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 260 transitions, 3411 flow [2024-06-28 02:23:56,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:56,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 02:23:56,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-28 02:23:56,991 INFO L175 Difference]: Start difference. First operand has 247 places, 246 transitions, 2833 flow. Second operand 9 states and 98 transitions. [2024-06-28 02:23:56,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 260 transitions, 3411 flow [2024-06-28 02:23:57,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 260 transitions, 3290 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:57,280 INFO L231 Difference]: Finished difference. Result has 248 places, 247 transitions, 2820 flow [2024-06-28 02:23:57,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2820, PETRI_PLACES=248, PETRI_TRANSITIONS=247} [2024-06-28 02:23:57,280 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-28 02:23:57,280 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 247 transitions, 2820 flow [2024-06-28 02:23:57,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:57,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:57,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:57,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:23:57,281 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:57,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:57,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1684726207, now seen corresponding path program 9 times [2024-06-28 02:23:57,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:57,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605623227] [2024-06-28 02:23:57,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:57,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:58,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:58,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605623227] [2024-06-28 02:23:58,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605623227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:58,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:58,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:58,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777453340] [2024-06-28 02:23:58,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:58,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:58,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:58,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:58,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:58,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:58,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 247 transitions, 2820 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:58,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:58,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:58,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:59,181 INFO L124 PetriNetUnfolderBase]: 727/1268 cut-off events. [2024-06-28 02:23:59,181 INFO L125 PetriNetUnfolderBase]: For 104928/104930 co-relation queries the response was YES. [2024-06-28 02:23:59,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9298 conditions, 1268 events. 727/1268 cut-off events. For 104928/104930 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6461 event pairs, 72 based on Foata normal form. 2/1269 useless extension candidates. Maximal degree in co-relation 9177. Up to 972 conditions per place. [2024-06-28 02:23:59,194 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 78 changer transitions 0/269 dead transitions. [2024-06-28 02:23:59,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 269 transitions, 3614 flow [2024-06-28 02:23:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:23:59,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-28 02:23:59,195 INFO L175 Difference]: Start difference. First operand has 248 places, 247 transitions, 2820 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:23:59,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 269 transitions, 3614 flow [2024-06-28 02:23:59,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 269 transitions, 3516 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:59,493 INFO L231 Difference]: Finished difference. Result has 251 places, 249 transitions, 2923 flow [2024-06-28 02:23:59,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2722, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2923, PETRI_PLACES=251, PETRI_TRANSITIONS=249} [2024-06-28 02:23:59,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-28 02:23:59,493 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 249 transitions, 2923 flow [2024-06-28 02:23:59,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:59,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:59,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:59,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:23:59,494 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:59,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash 346235641, now seen corresponding path program 10 times [2024-06-28 02:23:59,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:59,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264759582] [2024-06-28 02:23:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:59,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:00,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:00,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264759582] [2024-06-28 02:24:00,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264759582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:00,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:00,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:00,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159821865] [2024-06-28 02:24:00,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:00,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:00,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:00,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:00,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:00,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:00,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 249 transitions, 2923 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:00,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:00,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:00,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:01,015 INFO L124 PetriNetUnfolderBase]: 723/1262 cut-off events. [2024-06-28 02:24:01,015 INFO L125 PetriNetUnfolderBase]: For 101424/101426 co-relation queries the response was YES. [2024-06-28 02:24:01,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9211 conditions, 1262 events. 723/1262 cut-off events. For 101424/101426 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6443 event pairs, 73 based on Foata normal form. 2/1263 useless extension candidates. Maximal degree in co-relation 9089. Up to 1005 conditions per place. [2024-06-28 02:24:01,028 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 71 changer transitions 0/266 dead transitions. [2024-06-28 02:24:01,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 266 transitions, 3507 flow [2024-06-28 02:24:01,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:24:01,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:24:01,029 INFO L175 Difference]: Start difference. First operand has 251 places, 249 transitions, 2923 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:24:01,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 266 transitions, 3507 flow [2024-06-28 02:24:01,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 266 transitions, 3300 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:01,357 INFO L231 Difference]: Finished difference. Result has 254 places, 249 transitions, 2863 flow [2024-06-28 02:24:01,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2863, PETRI_PLACES=254, PETRI_TRANSITIONS=249} [2024-06-28 02:24:01,358 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-28 02:24:01,358 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 249 transitions, 2863 flow [2024-06-28 02:24:01,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:01,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:01,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:01,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:24:01,359 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:01,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:01,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1536920387, now seen corresponding path program 11 times [2024-06-28 02:24:01,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:01,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219876563] [2024-06-28 02:24:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:01,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:02,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:02,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219876563] [2024-06-28 02:24:02,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219876563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:02,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:02,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:02,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098461183] [2024-06-28 02:24:02,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:02,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:02,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:02,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:02,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:02,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:02,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 249 transitions, 2863 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:02,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:02,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:02,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:03,096 INFO L124 PetriNetUnfolderBase]: 729/1272 cut-off events. [2024-06-28 02:24:03,096 INFO L125 PetriNetUnfolderBase]: For 103868/103870 co-relation queries the response was YES. [2024-06-28 02:24:03,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9239 conditions, 1272 events. 729/1272 cut-off events. For 103868/103870 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6500 event pairs, 121 based on Foata normal form. 2/1273 useless extension candidates. Maximal degree in co-relation 9116. Up to 1123 conditions per place. [2024-06-28 02:24:03,106 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 223 selfloop transitions, 41 changer transitions 0/266 dead transitions. [2024-06-28 02:24:03,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 266 transitions, 3487 flow [2024-06-28 02:24:03,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:24:03,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-28 02:24:03,109 INFO L175 Difference]: Start difference. First operand has 254 places, 249 transitions, 2863 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:24:03,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 266 transitions, 3487 flow [2024-06-28 02:24:03,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 266 transitions, 3329 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 02:24:03,433 INFO L231 Difference]: Finished difference. Result has 254 places, 251 transitions, 2848 flow [2024-06-28 02:24:03,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2848, PETRI_PLACES=254, PETRI_TRANSITIONS=251} [2024-06-28 02:24:03,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-28 02:24:03,434 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 251 transitions, 2848 flow [2024-06-28 02:24:03,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:03,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:03,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:03,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:24:03,435 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:03,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:03,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1337624549, now seen corresponding path program 9 times [2024-06-28 02:24:03,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:03,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599690369] [2024-06-28 02:24:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:04,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:04,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599690369] [2024-06-28 02:24:04,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599690369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:04,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:04,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:04,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517670891] [2024-06-28 02:24:04,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:04,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:04,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:04,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:04,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 251 transitions, 2848 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:04,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:04,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:04,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:04,840 INFO L124 PetriNetUnfolderBase]: 733/1280 cut-off events. [2024-06-28 02:24:04,841 INFO L125 PetriNetUnfolderBase]: For 106909/106911 co-relation queries the response was YES. [2024-06-28 02:24:04,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9267 conditions, 1280 events. 733/1280 cut-off events. For 106909/106911 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6526 event pairs, 115 based on Foata normal form. 2/1281 useless extension candidates. Maximal degree in co-relation 9143. Up to 1137 conditions per place. [2024-06-28 02:24:04,851 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 223 selfloop transitions, 40 changer transitions 0/265 dead transitions. [2024-06-28 02:24:04,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 265 transitions, 3442 flow [2024-06-28 02:24:04,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 02:24:04,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-28 02:24:04,852 INFO L175 Difference]: Start difference. First operand has 254 places, 251 transitions, 2848 flow. Second operand 9 states and 98 transitions. [2024-06-28 02:24:04,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 265 transitions, 3442 flow [2024-06-28 02:24:05,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 265 transitions, 3315 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:05,151 INFO L231 Difference]: Finished difference. Result has 255 places, 252 transitions, 2837 flow [2024-06-28 02:24:05,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2837, PETRI_PLACES=255, PETRI_TRANSITIONS=252} [2024-06-28 02:24:05,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-28 02:24:05,152 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 252 transitions, 2837 flow [2024-06-28 02:24:05,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:05,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:05,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:05,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:24:05,154 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:05,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:05,154 INFO L85 PathProgramCache]: Analyzing trace with hash 346229689, now seen corresponding path program 10 times [2024-06-28 02:24:05,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:05,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639363531] [2024-06-28 02:24:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:05,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:05,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639363531] [2024-06-28 02:24:05,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639363531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:05,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:05,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:05,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448269228] [2024-06-28 02:24:05,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:05,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:05,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:06,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:06,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 252 transitions, 2837 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:06,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:06,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:06,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:06,458 INFO L124 PetriNetUnfolderBase]: 737/1288 cut-off events. [2024-06-28 02:24:06,458 INFO L125 PetriNetUnfolderBase]: For 109464/109466 co-relation queries the response was YES. [2024-06-28 02:24:06,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9315 conditions, 1288 events. 737/1288 cut-off events. For 109464/109466 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6648 event pairs, 73 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 9190. Up to 1041 conditions per place. [2024-06-28 02:24:06,469 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 198 selfloop transitions, 68 changer transitions 0/268 dead transitions. [2024-06-28 02:24:06,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 268 transitions, 3449 flow [2024-06-28 02:24:06,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:24:06,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:24:06,470 INFO L175 Difference]: Start difference. First operand has 255 places, 252 transitions, 2837 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:24:06,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 268 transitions, 3449 flow [2024-06-28 02:24:06,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 268 transitions, 3343 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:06,814 INFO L231 Difference]: Finished difference. Result has 257 places, 253 transitions, 2905 flow [2024-06-28 02:24:06,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2731, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2905, PETRI_PLACES=257, PETRI_TRANSITIONS=253} [2024-06-28 02:24:06,815 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-28 02:24:06,815 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 253 transitions, 2905 flow [2024-06-28 02:24:06,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:06,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:06,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:06,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:24:06,816 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:06,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1337618597, now seen corresponding path program 12 times [2024-06-28 02:24:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:06,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728399782] [2024-06-28 02:24:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:06,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:07,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:07,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728399782] [2024-06-28 02:24:07,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728399782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:07,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:07,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:07,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080433597] [2024-06-28 02:24:07,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:07,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:07,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:07,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:08,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:08,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 253 transitions, 2905 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:08,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:08,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:08,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:08,587 INFO L124 PetriNetUnfolderBase]: 733/1282 cut-off events. [2024-06-28 02:24:08,587 INFO L125 PetriNetUnfolderBase]: For 105440/105442 co-relation queries the response was YES. [2024-06-28 02:24:08,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9177 conditions, 1282 events. 733/1282 cut-off events. For 105440/105442 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6602 event pairs, 114 based on Foata normal form. 2/1283 useless extension candidates. Maximal degree in co-relation 9051. Up to 1129 conditions per place. [2024-06-28 02:24:08,600 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 223 selfloop transitions, 43 changer transitions 0/268 dead transitions. [2024-06-28 02:24:08,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 268 transitions, 3483 flow [2024-06-28 02:24:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:08,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:24:08,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 02:24:08,617 INFO L175 Difference]: Start difference. First operand has 257 places, 253 transitions, 2905 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:24:08,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 268 transitions, 3483 flow [2024-06-28 02:24:08,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 268 transitions, 3291 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:08,959 INFO L231 Difference]: Finished difference. Result has 260 places, 253 transitions, 2804 flow [2024-06-28 02:24:08,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2804, PETRI_PLACES=260, PETRI_TRANSITIONS=253} [2024-06-28 02:24:08,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-28 02:24:08,959 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 253 transitions, 2804 flow [2024-06-28 02:24:08,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:08,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:08,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:08,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:24:08,960 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:08,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:08,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1531563959, now seen corresponding path program 11 times [2024-06-28 02:24:08,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:08,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875454851] [2024-06-28 02:24:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:08,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:09,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:09,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875454851] [2024-06-28 02:24:09,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875454851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:09,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:09,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171053935] [2024-06-28 02:24:09,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:09,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:09,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:09,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:09,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:09,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 253 transitions, 2804 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:09,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:09,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:09,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:10,329 INFO L124 PetriNetUnfolderBase]: 737/1290 cut-off events. [2024-06-28 02:24:10,329 INFO L125 PetriNetUnfolderBase]: For 107711/107713 co-relation queries the response was YES. [2024-06-28 02:24:10,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9121 conditions, 1290 events. 737/1290 cut-off events. For 107711/107713 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6635 event pairs, 114 based on Foata normal form. 2/1291 useless extension candidates. Maximal degree in co-relation 8994. Up to 1124 conditions per place. [2024-06-28 02:24:10,342 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 221 selfloop transitions, 46 changer transitions 0/269 dead transitions. [2024-06-28 02:24:10,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 269 transitions, 3418 flow [2024-06-28 02:24:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:10,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:24:10,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-28 02:24:10,343 INFO L175 Difference]: Start difference. First operand has 260 places, 253 transitions, 2804 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:24:10,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 269 transitions, 3418 flow [2024-06-28 02:24:10,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 269 transitions, 3315 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:10,695 INFO L231 Difference]: Finished difference. Result has 260 places, 254 transitions, 2835 flow [2024-06-28 02:24:10,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2835, PETRI_PLACES=260, PETRI_TRANSITIONS=254} [2024-06-28 02:24:10,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-28 02:24:10,696 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 254 transitions, 2835 flow [2024-06-28 02:24:10,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:10,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:10,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:10,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:24:10,697 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:10,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:10,697 INFO L85 PathProgramCache]: Analyzing trace with hash -962573589, now seen corresponding path program 2 times [2024-06-28 02:24:10,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:10,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932771279] [2024-06-28 02:24:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:10,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:11,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:11,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932771279] [2024-06-28 02:24:11,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932771279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:11,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:11,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:11,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514546745] [2024-06-28 02:24:11,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:11,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:11,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:11,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:11,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:11,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 254 transitions, 2835 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:11,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:11,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:11,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:12,291 INFO L124 PetriNetUnfolderBase]: 745/1306 cut-off events. [2024-06-28 02:24:12,291 INFO L125 PetriNetUnfolderBase]: For 117288/117290 co-relation queries the response was YES. [2024-06-28 02:24:12,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9225 conditions, 1306 events. 745/1306 cut-off events. For 117288/117290 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6784 event pairs, 125 based on Foata normal form. 4/1309 useless extension candidates. Maximal degree in co-relation 9097. Up to 1169 conditions per place. [2024-06-28 02:24:12,304 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 42 changer transitions 0/272 dead transitions. [2024-06-28 02:24:12,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 272 transitions, 3455 flow [2024-06-28 02:24:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 02:24:12,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-28 02:24:12,306 INFO L175 Difference]: Start difference. First operand has 260 places, 254 transitions, 2835 flow. Second operand 11 states and 115 transitions. [2024-06-28 02:24:12,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 272 transitions, 3455 flow [2024-06-28 02:24:12,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 272 transitions, 3333 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:12,626 INFO L231 Difference]: Finished difference. Result has 264 places, 255 transitions, 2823 flow [2024-06-28 02:24:12,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2823, PETRI_PLACES=264, PETRI_TRANSITIONS=255} [2024-06-28 02:24:12,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-28 02:24:12,627 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 255 transitions, 2823 flow [2024-06-28 02:24:12,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:12,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:12,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:12,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:24:12,628 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:12,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:12,628 INFO L85 PathProgramCache]: Analyzing trace with hash 756364763, now seen corresponding path program 3 times [2024-06-28 02:24:12,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:12,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820388815] [2024-06-28 02:24:12,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:12,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:13,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:13,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:13,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820388815] [2024-06-28 02:24:13,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820388815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:13,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:13,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:13,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57955798] [2024-06-28 02:24:13,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:13,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:13,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:13,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:13,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:13,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:13,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 255 transitions, 2823 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:13,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:13,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:13,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:14,556 INFO L124 PetriNetUnfolderBase]: 753/1322 cut-off events. [2024-06-28 02:24:14,557 INFO L125 PetriNetUnfolderBase]: For 116950/116952 co-relation queries the response was YES. [2024-06-28 02:24:14,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9238 conditions, 1322 events. 753/1322 cut-off events. For 116950/116952 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6887 event pairs, 149 based on Foata normal form. 4/1325 useless extension candidates. Maximal degree in co-relation 9109. Up to 1215 conditions per place. [2024-06-28 02:24:14,567 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 30 changer transitions 0/272 dead transitions. [2024-06-28 02:24:14,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 272 transitions, 3439 flow [2024-06-28 02:24:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 02:24:14,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-28 02:24:14,568 INFO L175 Difference]: Start difference. First operand has 264 places, 255 transitions, 2823 flow. Second operand 11 states and 113 transitions. [2024-06-28 02:24:14,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 272 transitions, 3439 flow [2024-06-28 02:24:14,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 272 transitions, 3339 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:14,970 INFO L231 Difference]: Finished difference. Result has 266 places, 256 transitions, 2811 flow [2024-06-28 02:24:14,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2811, PETRI_PLACES=266, PETRI_TRANSITIONS=256} [2024-06-28 02:24:14,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-28 02:24:14,971 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 256 transitions, 2811 flow [2024-06-28 02:24:14,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:14,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:14,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:14,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:24:14,971 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:14,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:14,971 INFO L85 PathProgramCache]: Analyzing trace with hash 554796873, now seen corresponding path program 13 times [2024-06-28 02:24:14,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:14,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441071252] [2024-06-28 02:24:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:16,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:16,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441071252] [2024-06-28 02:24:16,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441071252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:16,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:16,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:16,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497542050] [2024-06-28 02:24:16,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:16,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:16,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:16,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:16,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:16,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 256 transitions, 2811 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:16,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:16,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:16,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:16,770 INFO L124 PetriNetUnfolderBase]: 759/1332 cut-off events. [2024-06-28 02:24:16,770 INFO L125 PetriNetUnfolderBase]: For 112820/112822 co-relation queries the response was YES. [2024-06-28 02:24:16,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9316 conditions, 1332 events. 759/1332 cut-off events. For 112820/112822 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6948 event pairs, 120 based on Foata normal form. 2/1333 useless extension candidates. Maximal degree in co-relation 9186. Up to 1146 conditions per place. [2024-06-28 02:24:16,784 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 52 changer transitions 0/275 dead transitions. [2024-06-28 02:24:16,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 275 transitions, 3467 flow [2024-06-28 02:24:16,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:16,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:24:16,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 02:24:16,785 INFO L175 Difference]: Start difference. First operand has 266 places, 256 transitions, 2811 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:24:16,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 275 transitions, 3467 flow [2024-06-28 02:24:17,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 275 transitions, 3389 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:17,144 INFO L231 Difference]: Finished difference. Result has 267 places, 258 transitions, 2905 flow [2024-06-28 02:24:17,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2733, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2905, PETRI_PLACES=267, PETRI_TRANSITIONS=258} [2024-06-28 02:24:17,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-28 02:24:17,144 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 258 transitions, 2905 flow [2024-06-28 02:24:17,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:17,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:17,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:17,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:24:17,145 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:17,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:17,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1531348757, now seen corresponding path program 14 times [2024-06-28 02:24:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:17,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545463379] [2024-06-28 02:24:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:17,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:18,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:18,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545463379] [2024-06-28 02:24:18,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545463379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:18,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:18,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:18,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502698007] [2024-06-28 02:24:18,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:18,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:18,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:18,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:18,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:18,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 258 transitions, 2905 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:18,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:18,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:18,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:19,135 INFO L124 PetriNetUnfolderBase]: 775/1358 cut-off events. [2024-06-28 02:24:19,135 INFO L125 PetriNetUnfolderBase]: For 123674/123676 co-relation queries the response was YES. [2024-06-28 02:24:19,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9845 conditions, 1358 events. 775/1358 cut-off events. For 123674/123676 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7098 event pairs, 114 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 9714. Up to 1091 conditions per place. [2024-06-28 02:24:19,147 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 72 changer transitions 0/282 dead transitions. [2024-06-28 02:24:19,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 282 transitions, 3823 flow [2024-06-28 02:24:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 02:24:19,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-28 02:24:19,148 INFO L175 Difference]: Start difference. First operand has 267 places, 258 transitions, 2905 flow. Second operand 10 states and 118 transitions. [2024-06-28 02:24:19,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 282 transitions, 3823 flow [2024-06-28 02:24:19,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 282 transitions, 3670 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:19,569 INFO L231 Difference]: Finished difference. Result has 268 places, 262 transitions, 3030 flow [2024-06-28 02:24:19,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3030, PETRI_PLACES=268, PETRI_TRANSITIONS=262} [2024-06-28 02:24:19,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-28 02:24:19,569 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 262 transitions, 3030 flow [2024-06-28 02:24:19,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:19,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:19,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:19,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:24:19,570 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:19,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1531348478, now seen corresponding path program 2 times [2024-06-28 02:24:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:19,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358422625] [2024-06-28 02:24:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:22,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:22,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358422625] [2024-06-28 02:24:22,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358422625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:22,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:22,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:22,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358619253] [2024-06-28 02:24:22,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:22,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:22,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:22,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:22,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:22,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:22,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 262 transitions, 3030 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:22,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:22,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:22,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:22,948 INFO L124 PetriNetUnfolderBase]: 773/1355 cut-off events. [2024-06-28 02:24:22,949 INFO L125 PetriNetUnfolderBase]: For 116441/116441 co-relation queries the response was YES. [2024-06-28 02:24:22,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9762 conditions, 1355 events. 773/1355 cut-off events. For 116441/116441 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7102 event pairs, 151 based on Foata normal form. 1/1355 useless extension candidates. Maximal degree in co-relation 9631. Up to 1252 conditions per place. [2024-06-28 02:24:22,967 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 38 changer transitions 0/276 dead transitions. [2024-06-28 02:24:22,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 276 transitions, 3629 flow [2024-06-28 02:24:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 02:24:22,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-28 02:24:22,968 INFO L175 Difference]: Start difference. First operand has 268 places, 262 transitions, 3030 flow. Second operand 11 states and 113 transitions. [2024-06-28 02:24:22,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 276 transitions, 3629 flow [2024-06-28 02:24:23,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 276 transitions, 3483 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:23,317 INFO L231 Difference]: Finished difference. Result has 272 places, 262 transitions, 2968 flow [2024-06-28 02:24:23,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2884, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2968, PETRI_PLACES=272, PETRI_TRANSITIONS=262} [2024-06-28 02:24:23,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-28 02:24:23,318 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 262 transitions, 2968 flow [2024-06-28 02:24:23,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:23,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:23,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:23,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:24:23,319 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:23,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:23,319 INFO L85 PathProgramCache]: Analyzing trace with hash 601756109, now seen corresponding path program 15 times [2024-06-28 02:24:23,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:23,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399125968] [2024-06-28 02:24:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:23,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:24,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:24,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399125968] [2024-06-28 02:24:24,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399125968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:24,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:24,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:24,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384238946] [2024-06-28 02:24:24,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:24,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:24,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:24,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:24,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:24,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:24,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 262 transitions, 2968 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:24,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:24,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:24,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:24,968 INFO L124 PetriNetUnfolderBase]: 799/1397 cut-off events. [2024-06-28 02:24:24,968 INFO L125 PetriNetUnfolderBase]: For 134671/134673 co-relation queries the response was YES. [2024-06-28 02:24:24,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10378 conditions, 1397 events. 799/1397 cut-off events. For 134671/134673 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7334 event pairs, 65 based on Foata normal form. 2/1398 useless extension candidates. Maximal degree in co-relation 10246. Up to 558 conditions per place. [2024-06-28 02:24:24,983 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 131 changer transitions 0/294 dead transitions. [2024-06-28 02:24:24,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 294 transitions, 4366 flow [2024-06-28 02:24:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:24:24,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:24:24,985 INFO L175 Difference]: Start difference. First operand has 272 places, 262 transitions, 2968 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:24:24,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 294 transitions, 4366 flow [2024-06-28 02:24:25,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 294 transitions, 4223 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 02:24:25,410 INFO L231 Difference]: Finished difference. Result has 272 places, 271 transitions, 3330 flow [2024-06-28 02:24:25,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3330, PETRI_PLACES=272, PETRI_TRANSITIONS=271} [2024-06-28 02:24:25,411 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-28 02:24:25,411 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 271 transitions, 3330 flow [2024-06-28 02:24:25,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:25,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:25,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:25,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:24:25,412 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:25,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:25,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1940037425, now seen corresponding path program 16 times [2024-06-28 02:24:25,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:25,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718831899] [2024-06-28 02:24:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:25,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:26,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:26,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718831899] [2024-06-28 02:24:26,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718831899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:26,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:26,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:26,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284411963] [2024-06-28 02:24:26,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:26,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:26,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:26,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:26,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:26,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:26,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 271 transitions, 3330 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:26,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:26,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:27,025 INFO L124 PetriNetUnfolderBase]: 795/1391 cut-off events. [2024-06-28 02:24:27,026 INFO L125 PetriNetUnfolderBase]: For 128247/128249 co-relation queries the response was YES. [2024-06-28 02:24:27,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10392 conditions, 1391 events. 795/1391 cut-off events. For 128247/128249 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7300 event pairs, 60 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 10259. Up to 570 conditions per place. [2024-06-28 02:24:27,041 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 130 changer transitions 0/291 dead transitions. [2024-06-28 02:24:27,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 291 transitions, 4314 flow [2024-06-28 02:24:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 02:24:27,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-28 02:24:27,042 INFO L175 Difference]: Start difference. First operand has 272 places, 271 transitions, 3330 flow. Second operand 10 states and 123 transitions. [2024-06-28 02:24:27,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 291 transitions, 4314 flow [2024-06-28 02:24:27,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 291 transitions, 4085 flow, removed 71 selfloop flow, removed 4 redundant places. [2024-06-28 02:24:27,463 INFO L231 Difference]: Finished difference. Result has 278 places, 271 transitions, 3366 flow [2024-06-28 02:24:27,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3101, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3366, PETRI_PLACES=278, PETRI_TRANSITIONS=271} [2024-06-28 02:24:27,464 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-28 02:24:27,464 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 271 transitions, 3366 flow [2024-06-28 02:24:27,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:27,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:27,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:27,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:24:27,465 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:27,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:27,465 INFO L85 PathProgramCache]: Analyzing trace with hash -510209369, now seen corresponding path program 17 times [2024-06-28 02:24:27,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:27,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909446743] [2024-06-28 02:24:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:27,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:28,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:28,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909446743] [2024-06-28 02:24:28,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909446743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:28,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:28,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:28,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065853202] [2024-06-28 02:24:28,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:28,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:28,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:28,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:28,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:29,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:29,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 271 transitions, 3366 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:29,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:29,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:29,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:29,726 INFO L124 PetriNetUnfolderBase]: 791/1385 cut-off events. [2024-06-28 02:24:29,727 INFO L125 PetriNetUnfolderBase]: For 122145/122147 co-relation queries the response was YES. [2024-06-28 02:24:29,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10238 conditions, 1385 events. 791/1385 cut-off events. For 122145/122147 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7283 event pairs, 111 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 10103. Up to 1121 conditions per place. [2024-06-28 02:24:29,741 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 69 changer transitions 0/289 dead transitions. [2024-06-28 02:24:29,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 289 transitions, 4000 flow [2024-06-28 02:24:29,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 02:24:29,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-28 02:24:29,743 INFO L175 Difference]: Start difference. First operand has 278 places, 271 transitions, 3366 flow. Second operand 10 states and 117 transitions. [2024-06-28 02:24:29,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 289 transitions, 4000 flow [2024-06-28 02:24:30,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 289 transitions, 3701 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:30,223 INFO L231 Difference]: Finished difference. Result has 279 places, 271 transitions, 3213 flow [2024-06-28 02:24:30,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3213, PETRI_PLACES=279, PETRI_TRANSITIONS=271} [2024-06-28 02:24:30,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-28 02:24:30,224 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 271 transitions, 3213 flow [2024-06-28 02:24:30,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:30,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:30,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:30,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:24:30,224 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:30,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:30,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2040963731, now seen corresponding path program 18 times [2024-06-28 02:24:30,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:30,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823490210] [2024-06-28 02:24:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:30,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:31,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:31,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823490210] [2024-06-28 02:24:31,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823490210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:31,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:31,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:31,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525008261] [2024-06-28 02:24:31,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:31,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:31,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:31,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 271 transitions, 3213 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:31,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:31,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:31,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:31,977 INFO L124 PetriNetUnfolderBase]: 793/1388 cut-off events. [2024-06-28 02:24:31,977 INFO L125 PetriNetUnfolderBase]: For 124240/124240 co-relation queries the response was YES. [2024-06-28 02:24:31,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9911 conditions, 1388 events. 793/1388 cut-off events. For 124240/124240 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7291 event pairs, 206 based on Foata normal form. 4/1391 useless extension candidates. Maximal degree in co-relation 9775. Up to 1318 conditions per place. [2024-06-28 02:24:31,992 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 262 selfloop transitions, 23 changer transitions 0/287 dead transitions. [2024-06-28 02:24:31,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 287 transitions, 4039 flow [2024-06-28 02:24:31,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:24:31,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-28 02:24:31,993 INFO L175 Difference]: Start difference. First operand has 279 places, 271 transitions, 3213 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:24:31,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 287 transitions, 4039 flow [2024-06-28 02:24:32,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 287 transitions, 3825 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-28 02:24:32,422 INFO L231 Difference]: Finished difference. Result has 280 places, 273 transitions, 3106 flow [2024-06-28 02:24:32,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3106, PETRI_PLACES=280, PETRI_TRANSITIONS=273} [2024-06-28 02:24:32,423 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-28 02:24:32,423 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 273 transitions, 3106 flow [2024-06-28 02:24:32,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:32,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:32,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:24:32,423 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:32,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2029911921, now seen corresponding path program 4 times [2024-06-28 02:24:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:32,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995150286] [2024-06-28 02:24:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:33,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:33,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995150286] [2024-06-28 02:24:33,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995150286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:33,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:33,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:33,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401863902] [2024-06-28 02:24:33,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:33,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:33,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:33,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:33,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 273 transitions, 3106 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:33,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:33,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:33,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:33,809 INFO L124 PetriNetUnfolderBase]: 801/1404 cut-off events. [2024-06-28 02:24:33,809 INFO L125 PetriNetUnfolderBase]: For 123673/123673 co-relation queries the response was YES. [2024-06-28 02:24:33,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9792 conditions, 1404 events. 801/1404 cut-off events. For 123673/123673 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7413 event pairs, 208 based on Foata normal form. 4/1407 useless extension candidates. Maximal degree in co-relation 9655. Up to 1343 conditions per place. [2024-06-28 02:24:33,824 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 265 selfloop transitions, 20 changer transitions 0/287 dead transitions. [2024-06-28 02:24:33,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 287 transitions, 3740 flow [2024-06-28 02:24:33,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 02:24:33,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-28 02:24:33,825 INFO L175 Difference]: Start difference. First operand has 280 places, 273 transitions, 3106 flow. Second operand 10 states and 102 transitions. [2024-06-28 02:24:33,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 287 transitions, 3740 flow [2024-06-28 02:24:34,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 287 transitions, 3690 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:34,236 INFO L231 Difference]: Finished difference. Result has 282 places, 274 transitions, 3126 flow [2024-06-28 02:24:34,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3126, PETRI_PLACES=282, PETRI_TRANSITIONS=274} [2024-06-28 02:24:34,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-28 02:24:34,237 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 274 transitions, 3126 flow [2024-06-28 02:24:34,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:34,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:34,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:34,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:24:34,238 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:34,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash 927152569, now seen corresponding path program 5 times [2024-06-28 02:24:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511593025] [2024-06-28 02:24:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:34,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:35,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:35,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511593025] [2024-06-28 02:24:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511593025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:35,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:35,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080142649] [2024-06-28 02:24:35,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:35,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:35,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:35,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:35,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 274 transitions, 3126 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:35,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:35,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:35,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:35,776 INFO L124 PetriNetUnfolderBase]: 823/1446 cut-off events. [2024-06-28 02:24:35,777 INFO L125 PetriNetUnfolderBase]: For 142541/142541 co-relation queries the response was YES. [2024-06-28 02:24:35,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10384 conditions, 1446 events. 823/1446 cut-off events. For 142541/142541 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7681 event pairs, 210 based on Foata normal form. 4/1449 useless extension candidates. Maximal degree in co-relation 10246. Up to 1339 conditions per place. [2024-06-28 02:24:35,792 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 269 selfloop transitions, 20 changer transitions 0/291 dead transitions. [2024-06-28 02:24:35,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 291 transitions, 3976 flow [2024-06-28 02:24:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 02:24:35,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-28 02:24:35,794 INFO L175 Difference]: Start difference. First operand has 282 places, 274 transitions, 3126 flow. Second operand 10 states and 102 transitions. [2024-06-28 02:24:35,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 291 transitions, 3976 flow [2024-06-28 02:24:36,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 291 transitions, 3916 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:36,255 INFO L231 Difference]: Finished difference. Result has 284 places, 276 transitions, 3164 flow [2024-06-28 02:24:36,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3164, PETRI_PLACES=284, PETRI_TRANSITIONS=276} [2024-06-28 02:24:36,256 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-28 02:24:36,256 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 276 transitions, 3164 flow [2024-06-28 02:24:36,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:36,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:36,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:36,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:24:36,256 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:36,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:36,257 INFO L85 PathProgramCache]: Analyzing trace with hash 602025499, now seen corresponding path program 6 times [2024-06-28 02:24:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:36,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119341401] [2024-06-28 02:24:36,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:36,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:37,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:37,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119341401] [2024-06-28 02:24:37,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119341401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:37,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:37,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:37,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449446370] [2024-06-28 02:24:37,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:37,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:37,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:37,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:37,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:37,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 276 transitions, 3164 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:37,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:37,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:37,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:38,641 INFO L124 PetriNetUnfolderBase]: 824/1450 cut-off events. [2024-06-28 02:24:38,641 INFO L125 PetriNetUnfolderBase]: For 138065/138067 co-relation queries the response was YES. [2024-06-28 02:24:38,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10270 conditions, 1450 events. 824/1450 cut-off events. For 138065/138067 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7752 event pairs, 122 based on Foata normal form. 4/1453 useless extension candidates. Maximal degree in co-relation 10131. Up to 1168 conditions per place. [2024-06-28 02:24:38,654 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 220 selfloop transitions, 72 changer transitions 0/294 dead transitions. [2024-06-28 02:24:38,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 294 transitions, 3836 flow [2024-06-28 02:24:38,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:24:38,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 02:24:38,655 INFO L175 Difference]: Start difference. First operand has 284 places, 276 transitions, 3164 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:24:38,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 294 transitions, 3836 flow [2024-06-28 02:24:39,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 294 transitions, 3783 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:39,145 INFO L231 Difference]: Finished difference. Result has 289 places, 277 transitions, 3289 flow [2024-06-28 02:24:39,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3289, PETRI_PLACES=289, PETRI_TRANSITIONS=277} [2024-06-28 02:24:39,145 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-28 02:24:39,146 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 277 transitions, 3289 flow [2024-06-28 02:24:39,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:39,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:39,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:39,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:24:39,146 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:39,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:39,147 INFO L85 PathProgramCache]: Analyzing trace with hash 915724729, now seen corresponding path program 7 times [2024-06-28 02:24:39,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:39,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746726205] [2024-06-28 02:24:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:39,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:40,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:40,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746726205] [2024-06-28 02:24:40,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746726205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:40,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:40,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:40,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634302264] [2024-06-28 02:24:40,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:40,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:40,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:40,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:40,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:40,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:40,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 277 transitions, 3289 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:40,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:40,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:40,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:41,372 INFO L124 PetriNetUnfolderBase]: 818/1439 cut-off events. [2024-06-28 02:24:41,372 INFO L125 PetriNetUnfolderBase]: For 124704/124704 co-relation queries the response was YES. [2024-06-28 02:24:41,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10007 conditions, 1439 events. 818/1439 cut-off events. For 124704/124704 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7711 event pairs, 213 based on Foata normal form. 4/1442 useless extension candidates. Maximal degree in co-relation 9866. Up to 1362 conditions per place. [2024-06-28 02:24:41,386 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 268 selfloop transitions, 21 changer transitions 0/291 dead transitions. [2024-06-28 02:24:41,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 291 transitions, 3909 flow [2024-06-28 02:24:41,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:41,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 02:24:41,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-28 02:24:41,390 INFO L175 Difference]: Start difference. First operand has 289 places, 277 transitions, 3289 flow. Second operand 11 states and 109 transitions. [2024-06-28 02:24:41,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 291 transitions, 3909 flow [2024-06-28 02:24:41,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 291 transitions, 3727 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:41,794 INFO L231 Difference]: Finished difference. Result has 291 places, 277 transitions, 3155 flow [2024-06-28 02:24:41,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3155, PETRI_PLACES=291, PETRI_TRANSITIONS=277} [2024-06-28 02:24:41,794 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-28 02:24:41,795 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 277 transitions, 3155 flow [2024-06-28 02:24:41,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:41,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:41,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:41,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:24:41,795 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:41,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:41,796 INFO L85 PathProgramCache]: Analyzing trace with hash 229930313, now seen corresponding path program 12 times [2024-06-28 02:24:41,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:41,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277905008] [2024-06-28 02:24:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:41,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:42,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:42,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277905008] [2024-06-28 02:24:42,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277905008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:42,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:42,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:42,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682498395] [2024-06-28 02:24:42,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:42,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:42,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:42,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:42,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:42,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:42,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 277 transitions, 3155 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:42,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:42,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:42,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:43,175 INFO L124 PetriNetUnfolderBase]: 852/1505 cut-off events. [2024-06-28 02:24:43,175 INFO L125 PetriNetUnfolderBase]: For 118842/118842 co-relation queries the response was YES. [2024-06-28 02:24:43,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10206 conditions, 1505 events. 852/1505 cut-off events. For 118842/118842 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8169 event pairs, 142 based on Foata normal form. 2/1506 useless extension candidates. Maximal degree in co-relation 10064. Up to 1390 conditions per place. [2024-06-28 02:24:43,192 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 281 selfloop transitions, 27 changer transitions 0/310 dead transitions. [2024-06-28 02:24:43,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 310 transitions, 3979 flow [2024-06-28 02:24:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:24:43,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-28 02:24:43,194 INFO L175 Difference]: Start difference. First operand has 291 places, 277 transitions, 3155 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:24:43,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 310 transitions, 3979 flow [2024-06-28 02:24:43,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 310 transitions, 3935 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 02:24:43,643 INFO L231 Difference]: Finished difference. Result has 295 places, 287 transitions, 3336 flow [2024-06-28 02:24:43,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3336, PETRI_PLACES=295, PETRI_TRANSITIONS=287} [2024-06-28 02:24:43,644 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-28 02:24:43,644 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 287 transitions, 3336 flow [2024-06-28 02:24:43,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:43,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:43,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:43,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:24:43,645 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:43,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:43,645 INFO L85 PathProgramCache]: Analyzing trace with hash -270049831, now seen corresponding path program 19 times [2024-06-28 02:24:43,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:43,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613518894] [2024-06-28 02:24:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:43,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:44,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:44,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613518894] [2024-06-28 02:24:44,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613518894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:44,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:44,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:44,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227624680] [2024-06-28 02:24:44,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:44,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:44,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:44,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:44,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:44,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:44,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 287 transitions, 3336 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:44,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:44,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:44,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:45,534 INFO L124 PetriNetUnfolderBase]: 848/1499 cut-off events. [2024-06-28 02:24:45,534 INFO L125 PetriNetUnfolderBase]: For 113333/113333 co-relation queries the response was YES. [2024-06-28 02:24:45,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10078 conditions, 1499 events. 848/1499 cut-off events. For 113333/113333 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8149 event pairs, 122 based on Foata normal form. 2/1500 useless extension candidates. Maximal degree in co-relation 9932. Up to 1214 conditions per place. [2024-06-28 02:24:45,550 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 78 changer transitions 0/317 dead transitions. [2024-06-28 02:24:45,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 317 transitions, 4283 flow [2024-06-28 02:24:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:24:45,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-28 02:24:45,568 INFO L175 Difference]: Start difference. First operand has 295 places, 287 transitions, 3336 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:24:45,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 317 transitions, 4283 flow [2024-06-28 02:24:46,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 317 transitions, 4159 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:46,043 INFO L231 Difference]: Finished difference. Result has 300 places, 287 transitions, 3374 flow [2024-06-28 02:24:46,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3374, PETRI_PLACES=300, PETRI_TRANSITIONS=287} [2024-06-28 02:24:46,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-28 02:24:46,043 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 287 transitions, 3374 flow [2024-06-28 02:24:46,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:46,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:46,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:46,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:24:46,044 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:46,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:46,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1041516181, now seen corresponding path program 13 times [2024-06-28 02:24:46,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:46,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070140189] [2024-06-28 02:24:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:46,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:46,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:46,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070140189] [2024-06-28 02:24:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070140189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:46,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007637500] [2024-06-28 02:24:46,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:46,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:46,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:46,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:46,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 287 transitions, 3374 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:46,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:46,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:46,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:47,471 INFO L124 PetriNetUnfolderBase]: 861/1528 cut-off events. [2024-06-28 02:24:47,471 INFO L125 PetriNetUnfolderBase]: For 115573/115573 co-relation queries the response was YES. [2024-06-28 02:24:47,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10277 conditions, 1528 events. 861/1528 cut-off events. For 115573/115573 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8394 event pairs, 155 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 10131. Up to 1393 conditions per place. [2024-06-28 02:24:47,488 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 275 selfloop transitions, 36 changer transitions 0/313 dead transitions. [2024-06-28 02:24:47,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 313 transitions, 4110 flow [2024-06-28 02:24:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:24:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:24:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 02:24:47,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-28 02:24:47,489 INFO L175 Difference]: Start difference. First operand has 300 places, 287 transitions, 3374 flow. Second operand 12 states and 126 transitions. [2024-06-28 02:24:47,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 313 transitions, 4110 flow [2024-06-28 02:24:47,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 313 transitions, 3884 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-28 02:24:47,950 INFO L231 Difference]: Finished difference. Result has 304 places, 290 transitions, 3289 flow [2024-06-28 02:24:47,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3148, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3289, PETRI_PLACES=304, PETRI_TRANSITIONS=290} [2024-06-28 02:24:47,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-28 02:24:47,951 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 290 transitions, 3289 flow [2024-06-28 02:24:47,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:47,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:47,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:47,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:24:47,951 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:47,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash -373378281, now seen corresponding path program 14 times [2024-06-28 02:24:47,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:47,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149829481] [2024-06-28 02:24:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:48,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:48,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149829481] [2024-06-28 02:24:48,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149829481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:48,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:48,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:48,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313417214] [2024-06-28 02:24:48,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:48,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:48,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:48,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:48,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:48,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:48,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 290 transitions, 3289 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:48,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:48,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:48,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:49,316 INFO L124 PetriNetUnfolderBase]: 858/1523 cut-off events. [2024-06-28 02:24:49,317 INFO L125 PetriNetUnfolderBase]: For 107459/107459 co-relation queries the response was YES. [2024-06-28 02:24:49,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9861 conditions, 1523 events. 858/1523 cut-off events. For 107459/107459 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8350 event pairs, 138 based on Foata normal form. 2/1524 useless extension candidates. Maximal degree in co-relation 9714. Up to 1313 conditions per place. [2024-06-28 02:24:49,333 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 267 selfloop transitions, 41 changer transitions 0/310 dead transitions. [2024-06-28 02:24:49,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 310 transitions, 3955 flow [2024-06-28 02:24:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 02:24:49,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-28 02:24:49,335 INFO L175 Difference]: Start difference. First operand has 304 places, 290 transitions, 3289 flow. Second operand 11 states and 114 transitions. [2024-06-28 02:24:49,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 310 transitions, 3955 flow [2024-06-28 02:24:49,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 310 transitions, 3819 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:49,939 INFO L231 Difference]: Finished difference. Result has 306 places, 290 transitions, 3239 flow [2024-06-28 02:24:49,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3153, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3239, PETRI_PLACES=306, PETRI_TRANSITIONS=290} [2024-06-28 02:24:49,940 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-28 02:24:49,940 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 290 transitions, 3239 flow [2024-06-28 02:24:49,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:49,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:49,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:49,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:24:49,940 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:49,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:49,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1866224729, now seen corresponding path program 1 times [2024-06-28 02:24:49,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:49,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250765343] [2024-06-28 02:24:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:49,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:50,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:50,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250765343] [2024-06-28 02:24:50,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250765343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:50,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:50,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:24:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814452402] [2024-06-28 02:24:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:50,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:24:50,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:50,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:24:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:24:51,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:51,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 290 transitions, 3239 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:51,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:51,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:51,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:51,643 INFO L124 PetriNetUnfolderBase]: 862/1531 cut-off events. [2024-06-28 02:24:51,644 INFO L125 PetriNetUnfolderBase]: For 110668/110668 co-relation queries the response was YES. [2024-06-28 02:24:51,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9836 conditions, 1531 events. 862/1531 cut-off events. For 110668/110668 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8447 event pairs, 169 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 9690. Up to 1368 conditions per place. [2024-06-28 02:24:51,661 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 48 changer transitions 0/308 dead transitions. [2024-06-28 02:24:51,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 308 transitions, 3911 flow [2024-06-28 02:24:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:24:51,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-28 02:24:51,662 INFO L175 Difference]: Start difference. First operand has 306 places, 290 transitions, 3239 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:24:51,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 308 transitions, 3911 flow [2024-06-28 02:24:52,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 308 transitions, 3709 flow, removed 25 selfloop flow, removed 15 redundant places. [2024-06-28 02:24:52,219 INFO L231 Difference]: Finished difference. Result has 301 places, 291 transitions, 3156 flow [2024-06-28 02:24:52,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3037, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3156, PETRI_PLACES=301, PETRI_TRANSITIONS=291} [2024-06-28 02:24:52,219 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-28 02:24:52,219 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 291 transitions, 3156 flow [2024-06-28 02:24:52,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:52,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:52,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:52,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:24:52,220 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:52,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash 70725147, now seen corresponding path program 2 times [2024-06-28 02:24:52,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:52,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350992971] [2024-06-28 02:24:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:52,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:53,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:53,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350992971] [2024-06-28 02:24:53,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350992971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:53,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:53,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:24:53,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770734091] [2024-06-28 02:24:53,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:53,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:24:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:24:53,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:24:53,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:53,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 291 transitions, 3156 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:53,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:53,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:53,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:53,833 INFO L124 PetriNetUnfolderBase]: 866/1539 cut-off events. [2024-06-28 02:24:53,833 INFO L125 PetriNetUnfolderBase]: For 112124/112124 co-relation queries the response was YES. [2024-06-28 02:24:53,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9708 conditions, 1539 events. 866/1539 cut-off events. For 112124/112124 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8531 event pairs, 169 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 9568. Up to 1390 conditions per place. [2024-06-28 02:24:53,849 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 266 selfloop transitions, 41 changer transitions 0/309 dead transitions. [2024-06-28 02:24:53,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 309 transitions, 3830 flow [2024-06-28 02:24:53,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:24:53,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-28 02:24:53,850 INFO L175 Difference]: Start difference. First operand has 301 places, 291 transitions, 3156 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:24:53,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 309 transitions, 3830 flow [2024-06-28 02:24:54,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 309 transitions, 3656 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 02:24:54,324 INFO L231 Difference]: Finished difference. Result has 301 places, 292 transitions, 3086 flow [2024-06-28 02:24:54,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3086, PETRI_PLACES=301, PETRI_TRANSITIONS=292} [2024-06-28 02:24:54,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-28 02:24:54,327 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 292 transitions, 3086 flow [2024-06-28 02:24:54,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:54,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:54,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:54,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:24:54,327 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:54,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1866344699, now seen corresponding path program 3 times [2024-06-28 02:24:54,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:54,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730425222] [2024-06-28 02:24:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:54,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:55,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:55,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730425222] [2024-06-28 02:24:55,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730425222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:55,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:55,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:24:55,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293106197] [2024-06-28 02:24:55,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:55,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:24:55,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:55,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:24:55,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:24:55,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:55,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 292 transitions, 3086 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:55,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:55,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:55,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:55,888 INFO L124 PetriNetUnfolderBase]: 870/1547 cut-off events. [2024-06-28 02:24:55,889 INFO L125 PetriNetUnfolderBase]: For 114360/114360 co-relation queries the response was YES. [2024-06-28 02:24:55,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9570 conditions, 1547 events. 870/1547 cut-off events. For 114360/114360 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8564 event pairs, 168 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 9431. Up to 1398 conditions per place. [2024-06-28 02:24:55,906 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 272 selfloop transitions, 36 changer transitions 0/310 dead transitions. [2024-06-28 02:24:55,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 310 transitions, 3762 flow [2024-06-28 02:24:55,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 02:24:55,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-28 02:24:55,907 INFO L175 Difference]: Start difference. First operand has 301 places, 292 transitions, 3086 flow. Second operand 10 states and 105 transitions. [2024-06-28 02:24:55,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 310 transitions, 3762 flow [2024-06-28 02:24:56,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 310 transitions, 3668 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:56,358 INFO L231 Difference]: Finished difference. Result has 303 places, 293 transitions, 3088 flow [2024-06-28 02:24:56,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2992, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3088, PETRI_PLACES=303, PETRI_TRANSITIONS=293} [2024-06-28 02:24:56,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-28 02:24:56,359 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 293 transitions, 3088 flow [2024-06-28 02:24:56,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:56,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:56,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:56,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:24:56,360 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:56,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:56,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1924437149, now seen corresponding path program 4 times [2024-06-28 02:24:56,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:56,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695569653] [2024-06-28 02:24:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:56,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:57,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:57,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695569653] [2024-06-28 02:24:57,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695569653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:57,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:57,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:24:57,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437169850] [2024-06-28 02:24:57,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:57,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:24:57,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:57,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:24:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:24:57,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:57,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 293 transitions, 3088 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:57,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:57,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:57,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:57,890 INFO L124 PetriNetUnfolderBase]: 874/1555 cut-off events. [2024-06-28 02:24:57,890 INFO L125 PetriNetUnfolderBase]: For 115066/115066 co-relation queries the response was YES. [2024-06-28 02:24:57,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9623 conditions, 1555 events. 874/1555 cut-off events. For 115066/115066 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8615 event pairs, 137 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 9483. Up to 1301 conditions per place. [2024-06-28 02:24:57,906 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 264 selfloop transitions, 47 changer transitions 0/313 dead transitions. [2024-06-28 02:24:57,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 313 transitions, 3776 flow [2024-06-28 02:24:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 02:24:57,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-28 02:24:57,907 INFO L175 Difference]: Start difference. First operand has 303 places, 293 transitions, 3088 flow. Second operand 11 states and 113 transitions. [2024-06-28 02:24:57,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 313 transitions, 3776 flow [2024-06-28 02:24:58,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 313 transitions, 3690 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:58,396 INFO L231 Difference]: Finished difference. Result has 306 places, 294 transitions, 3125 flow [2024-06-28 02:24:58,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3002, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3125, PETRI_PLACES=306, PETRI_TRANSITIONS=294} [2024-06-28 02:24:58,397 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-28 02:24:58,397 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 294 transitions, 3125 flow [2024-06-28 02:24:58,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:58,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:58,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:58,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:24:58,398 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:58,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash 821221567, now seen corresponding path program 1 times [2024-06-28 02:24:58,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:58,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503465190] [2024-06-28 02:24:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:58,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:59,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:59,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503465190] [2024-06-28 02:24:59,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503465190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:59,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:59,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:24:59,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99290407] [2024-06-28 02:24:59,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:59,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:24:59,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:24:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:24:59,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:59,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 294 transitions, 3125 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:59,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:59,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:59,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:00,084 INFO L124 PetriNetUnfolderBase]: 870/1549 cut-off events. [2024-06-28 02:25:00,084 INFO L125 PetriNetUnfolderBase]: For 109497/109497 co-relation queries the response was YES. [2024-06-28 02:25:00,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9416 conditions, 1549 events. 870/1549 cut-off events. For 109497/109497 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8627 event pairs, 173 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 9275. Up to 1376 conditions per place. [2024-06-28 02:25:00,100 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 55 changer transitions 0/311 dead transitions. [2024-06-28 02:25:00,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 311 transitions, 3791 flow [2024-06-28 02:25:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:25:00,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 02:25:00,102 INFO L175 Difference]: Start difference. First operand has 306 places, 294 transitions, 3125 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:25:00,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 311 transitions, 3791 flow [2024-06-28 02:25:00,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 311 transitions, 3636 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:00,550 INFO L231 Difference]: Finished difference. Result has 307 places, 294 transitions, 3094 flow [2024-06-28 02:25:00,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3094, PETRI_PLACES=307, PETRI_TRANSITIONS=294} [2024-06-28 02:25:00,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-28 02:25:00,551 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 294 transitions, 3094 flow [2024-06-28 02:25:00,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:00,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:00,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:00,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:25:00,551 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:00,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:00,552 INFO L85 PathProgramCache]: Analyzing trace with hash 825869955, now seen corresponding path program 1 times [2024-06-28 02:25:00,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:00,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758340708] [2024-06-28 02:25:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:00,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:02,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:02,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758340708] [2024-06-28 02:25:02,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758340708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:02,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:02,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:02,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772863315] [2024-06-28 02:25:02,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:02,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:02,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:02,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:02,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:02,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 294 transitions, 3094 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:02,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:02,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:02,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:02,920 INFO L124 PetriNetUnfolderBase]: 876/1559 cut-off events. [2024-06-28 02:25:02,921 INFO L125 PetriNetUnfolderBase]: For 110736/110736 co-relation queries the response was YES. [2024-06-28 02:25:02,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9457 conditions, 1559 events. 876/1559 cut-off events. For 110736/110736 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8673 event pairs, 170 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 9315. Up to 1403 conditions per place. [2024-06-28 02:25:02,937 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 273 selfloop transitions, 38 changer transitions 0/313 dead transitions. [2024-06-28 02:25:02,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 313 transitions, 3808 flow [2024-06-28 02:25:02,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:25:02,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-28 02:25:02,938 INFO L175 Difference]: Start difference. First operand has 307 places, 294 transitions, 3094 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:25:02,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 313 transitions, 3808 flow [2024-06-28 02:25:03,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 313 transitions, 3640 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:03,483 INFO L231 Difference]: Finished difference. Result has 308 places, 296 transitions, 3058 flow [2024-06-28 02:25:03,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3058, PETRI_PLACES=308, PETRI_TRANSITIONS=296} [2024-06-28 02:25:03,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-28 02:25:03,483 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 296 transitions, 3058 flow [2024-06-28 02:25:03,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:03,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:03,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:03,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:25:03,484 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:03,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:03,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2060972101, now seen corresponding path program 5 times [2024-06-28 02:25:03,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:03,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784527563] [2024-06-28 02:25:03,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:03,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:04,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:04,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784527563] [2024-06-28 02:25:04,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784527563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:04,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:04,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:04,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254118447] [2024-06-28 02:25:04,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:04,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:04,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:04,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:04,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:04,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 296 transitions, 3058 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:04,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:04,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:04,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:05,266 INFO L124 PetriNetUnfolderBase]: 880/1567 cut-off events. [2024-06-28 02:25:05,267 INFO L125 PetriNetUnfolderBase]: For 113327/113327 co-relation queries the response was YES. [2024-06-28 02:25:05,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9469 conditions, 1567 events. 880/1567 cut-off events. For 113327/113327 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8733 event pairs, 125 based on Foata normal form. 2/1568 useless extension candidates. Maximal degree in co-relation 9326. Up to 1245 conditions per place. [2024-06-28 02:25:05,283 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 88 changer transitions 0/316 dead transitions. [2024-06-28 02:25:05,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 316 transitions, 3768 flow [2024-06-28 02:25:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:25:05,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 02:25:05,284 INFO L175 Difference]: Start difference. First operand has 308 places, 296 transitions, 3058 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:25:05,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 316 transitions, 3768 flow [2024-06-28 02:25:05,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 316 transitions, 3666 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:05,808 INFO L231 Difference]: Finished difference. Result has 310 places, 297 transitions, 3161 flow [2024-06-28 02:25:05,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3161, PETRI_PLACES=310, PETRI_TRANSITIONS=297} [2024-06-28 02:25:05,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-28 02:25:05,809 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 297 transitions, 3161 flow [2024-06-28 02:25:05,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:05,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:05,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:05,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:25:05,810 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:05,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:05,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1489524239, now seen corresponding path program 2 times [2024-06-28 02:25:05,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87098691] [2024-06-28 02:25:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:05,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87098691] [2024-06-28 02:25:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87098691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:07,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:07,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148502555] [2024-06-28 02:25:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:07,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:07,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:07,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 297 transitions, 3161 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:07,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:07,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:07,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:08,055 INFO L124 PetriNetUnfolderBase]: 886/1577 cut-off events. [2024-06-28 02:25:08,055 INFO L125 PetriNetUnfolderBase]: For 116681/116681 co-relation queries the response was YES. [2024-06-28 02:25:08,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9678 conditions, 1577 events. 886/1577 cut-off events. For 116681/116681 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8816 event pairs, 125 based on Foata normal form. 2/1578 useless extension candidates. Maximal degree in co-relation 9534. Up to 1143 conditions per place. [2024-06-28 02:25:08,071 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 109 changer transitions 0/320 dead transitions. [2024-06-28 02:25:08,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 320 transitions, 3913 flow [2024-06-28 02:25:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:25:08,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-28 02:25:08,073 INFO L175 Difference]: Start difference. First operand has 310 places, 297 transitions, 3161 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:25:08,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 320 transitions, 3913 flow [2024-06-28 02:25:08,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 320 transitions, 3720 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:08,625 INFO L231 Difference]: Finished difference. Result has 313 places, 299 transitions, 3244 flow [2024-06-28 02:25:08,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3244, PETRI_PLACES=313, PETRI_TRANSITIONS=299} [2024-06-28 02:25:08,625 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-28 02:25:08,626 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 299 transitions, 3244 flow [2024-06-28 02:25:08,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:08,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:08,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:08,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:25:08,626 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:08,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:08,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2061209685, now seen corresponding path program 3 times [2024-06-28 02:25:08,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:08,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514938948] [2024-06-28 02:25:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:08,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:10,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:10,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514938948] [2024-06-28 02:25:10,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514938948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:10,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:10,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:10,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647815248] [2024-06-28 02:25:10,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:10,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:10,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:10,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:10,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:10,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 299 transitions, 3244 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:10,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:10,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:10,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:11,306 INFO L124 PetriNetUnfolderBase]: 908/1613 cut-off events. [2024-06-28 02:25:11,306 INFO L125 PetriNetUnfolderBase]: For 141057/141057 co-relation queries the response was YES. [2024-06-28 02:25:11,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10230 conditions, 1613 events. 908/1613 cut-off events. For 141057/141057 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9035 event pairs, 125 based on Foata normal form. 4/1616 useless extension candidates. Maximal degree in co-relation 10085. Up to 1103 conditions per place. [2024-06-28 02:25:11,323 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 117 changer transitions 0/328 dead transitions. [2024-06-28 02:25:11,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 328 transitions, 4334 flow [2024-06-28 02:25:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:11,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:25:11,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-28 02:25:11,325 INFO L175 Difference]: Start difference. First operand has 313 places, 299 transitions, 3244 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:25:11,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 328 transitions, 4334 flow [2024-06-28 02:25:11,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 328 transitions, 4080 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:11,804 INFO L231 Difference]: Finished difference. Result has 316 places, 305 transitions, 3404 flow [2024-06-28 02:25:11,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2990, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3404, PETRI_PLACES=316, PETRI_TRANSITIONS=305} [2024-06-28 02:25:11,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-28 02:25:11,805 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 305 transitions, 3404 flow [2024-06-28 02:25:11,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:11,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:11,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:11,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:25:11,805 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:11,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1883840581, now seen corresponding path program 6 times [2024-06-28 02:25:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:11,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134580511] [2024-06-28 02:25:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:12,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:12,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134580511] [2024-06-28 02:25:12,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134580511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:12,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:12,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:12,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932592233] [2024-06-28 02:25:12,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:12,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:12,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:12,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:12,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:13,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:13,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 305 transitions, 3404 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:13,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:13,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:13,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:13,567 INFO L124 PetriNetUnfolderBase]: 912/1621 cut-off events. [2024-06-28 02:25:13,567 INFO L125 PetriNetUnfolderBase]: For 135637/135637 co-relation queries the response was YES. [2024-06-28 02:25:13,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10348 conditions, 1621 events. 912/1621 cut-off events. For 135637/135637 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9098 event pairs, 155 based on Foata normal form. 2/1622 useless extension candidates. Maximal degree in co-relation 10201. Up to 1437 conditions per place. [2024-06-28 02:25:13,585 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 269 selfloop transitions, 51 changer transitions 0/322 dead transitions. [2024-06-28 02:25:13,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 322 transitions, 4112 flow [2024-06-28 02:25:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:25:13,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:25:13,586 INFO L175 Difference]: Start difference. First operand has 316 places, 305 transitions, 3404 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:25:13,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 322 transitions, 4112 flow [2024-06-28 02:25:14,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 322 transitions, 3880 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:14,110 INFO L231 Difference]: Finished difference. Result has 318 places, 306 transitions, 3305 flow [2024-06-28 02:25:14,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3172, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3305, PETRI_PLACES=318, PETRI_TRANSITIONS=306} [2024-06-28 02:25:14,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-28 02:25:14,111 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 306 transitions, 3305 flow [2024-06-28 02:25:14,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:14,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:14,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:14,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:25:14,111 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:14,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:14,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2061218365, now seen corresponding path program 1 times [2024-06-28 02:25:14,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:14,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177380106] [2024-06-28 02:25:14,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:14,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:15,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:15,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177380106] [2024-06-28 02:25:15,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177380106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:15,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:15,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:15,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825942804] [2024-06-28 02:25:15,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:15,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:15,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:15,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:15,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:16,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:16,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 306 transitions, 3305 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:16,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:16,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:16,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:16,666 INFO L124 PetriNetUnfolderBase]: 916/1629 cut-off events. [2024-06-28 02:25:16,666 INFO L125 PetriNetUnfolderBase]: For 132764/132764 co-relation queries the response was YES. [2024-06-28 02:25:16,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10286 conditions, 1629 events. 916/1629 cut-off events. For 132764/132764 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9183 event pairs, 192 based on Foata normal form. 2/1630 useless extension candidates. Maximal degree in co-relation 10139. Up to 1464 conditions per place. [2024-06-28 02:25:16,684 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 274 selfloop transitions, 49 changer transitions 0/325 dead transitions. [2024-06-28 02:25:16,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 325 transitions, 4039 flow [2024-06-28 02:25:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:25:16,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-28 02:25:16,685 INFO L175 Difference]: Start difference. First operand has 318 places, 306 transitions, 3305 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:25:16,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 325 transitions, 4039 flow [2024-06-28 02:25:17,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 325 transitions, 3918 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:17,233 INFO L231 Difference]: Finished difference. Result has 321 places, 307 transitions, 3318 flow [2024-06-28 02:25:17,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3184, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3318, PETRI_PLACES=321, PETRI_TRANSITIONS=307} [2024-06-28 02:25:17,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-28 02:25:17,233 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 307 transitions, 3318 flow [2024-06-28 02:25:17,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:17,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:17,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:17,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:25:17,234 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:17,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:17,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2054543011, now seen corresponding path program 7 times [2024-06-28 02:25:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:17,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444373949] [2024-06-28 02:25:17,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:17,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:18,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:18,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444373949] [2024-06-28 02:25:18,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444373949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:18,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:18,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:18,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376682602] [2024-06-28 02:25:18,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:18,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:18,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:18,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:18,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:18,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:18,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 307 transitions, 3318 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:18,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:18,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:18,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:18,950 INFO L124 PetriNetUnfolderBase]: 920/1637 cut-off events. [2024-06-28 02:25:18,950 INFO L125 PetriNetUnfolderBase]: For 134821/134821 co-relation queries the response was YES. [2024-06-28 02:25:18,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10336 conditions, 1637 events. 920/1637 cut-off events. For 134821/134821 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9216 event pairs, 135 based on Foata normal form. 2/1638 useless extension candidates. Maximal degree in co-relation 10188. Up to 1391 conditions per place. [2024-06-28 02:25:18,968 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 254 selfloop transitions, 70 changer transitions 0/326 dead transitions. [2024-06-28 02:25:18,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 326 transitions, 4046 flow [2024-06-28 02:25:18,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:18,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:18,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:25:18,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:25:18,969 INFO L175 Difference]: Start difference. First operand has 321 places, 307 transitions, 3318 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:25:18,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 326 transitions, 4046 flow [2024-06-28 02:25:19,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 326 transitions, 3924 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:19,502 INFO L231 Difference]: Finished difference. Result has 322 places, 308 transitions, 3369 flow [2024-06-28 02:25:19,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3196, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3369, PETRI_PLACES=322, PETRI_TRANSITIONS=308} [2024-06-28 02:25:19,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-28 02:25:19,502 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 308 transitions, 3369 flow [2024-06-28 02:25:19,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:19,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:19,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:19,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:25:19,514 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:19,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2054538361, now seen corresponding path program 8 times [2024-06-28 02:25:19,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:19,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796131625] [2024-06-28 02:25:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:19,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:20,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:20,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796131625] [2024-06-28 02:25:20,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796131625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:20,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:20,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:20,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698388886] [2024-06-28 02:25:20,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:20,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:20,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:20,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:20,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:20,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:20,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 308 transitions, 3369 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:20,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:20,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:20,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:21,183 INFO L124 PetriNetUnfolderBase]: 924/1645 cut-off events. [2024-06-28 02:25:21,184 INFO L125 PetriNetUnfolderBase]: For 134888/134888 co-relation queries the response was YES. [2024-06-28 02:25:21,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10426 conditions, 1645 events. 924/1645 cut-off events. For 134888/134888 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9272 event pairs, 135 based on Foata normal form. 2/1646 useless extension candidates. Maximal degree in co-relation 10277. Up to 1407 conditions per place. [2024-06-28 02:25:21,202 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 67 changer transitions 0/327 dead transitions. [2024-06-28 02:25:21,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 327 transitions, 4099 flow [2024-06-28 02:25:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:25:21,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-28 02:25:21,203 INFO L175 Difference]: Start difference. First operand has 322 places, 308 transitions, 3369 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:25:21,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 327 transitions, 4099 flow [2024-06-28 02:25:21,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 327 transitions, 3938 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:21,763 INFO L231 Difference]: Finished difference. Result has 324 places, 309 transitions, 3376 flow [2024-06-28 02:25:21,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3208, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3376, PETRI_PLACES=324, PETRI_TRANSITIONS=309} [2024-06-28 02:25:21,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-28 02:25:21,764 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 309 transitions, 3376 flow [2024-06-28 02:25:21,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:21,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:21,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:21,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:25:21,765 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:21,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:21,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1883835931, now seen corresponding path program 9 times [2024-06-28 02:25:21,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:21,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754497638] [2024-06-28 02:25:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:21,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:22,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:22,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754497638] [2024-06-28 02:25:22,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754497638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:22,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:22,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:22,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163061933] [2024-06-28 02:25:22,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:22,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:22,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:22,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:22,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:22,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:22,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 309 transitions, 3376 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:22,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:22,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:22,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:23,409 INFO L124 PetriNetUnfolderBase]: 928/1653 cut-off events. [2024-06-28 02:25:23,410 INFO L125 PetriNetUnfolderBase]: For 137480/137480 co-relation queries the response was YES. [2024-06-28 02:25:23,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10479 conditions, 1653 events. 928/1653 cut-off events. For 137480/137480 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9355 event pairs, 159 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 10329. Up to 1477 conditions per place. [2024-06-28 02:25:23,428 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 276 selfloop transitions, 48 changer transitions 0/326 dead transitions. [2024-06-28 02:25:23,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 326 transitions, 4096 flow [2024-06-28 02:25:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:25:23,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-28 02:25:23,438 INFO L175 Difference]: Start difference. First operand has 324 places, 309 transitions, 3376 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:25:23,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 326 transitions, 4096 flow [2024-06-28 02:25:24,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 326 transitions, 3938 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:24,008 INFO L231 Difference]: Finished difference. Result has 326 places, 310 transitions, 3350 flow [2024-06-28 02:25:24,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3350, PETRI_PLACES=326, PETRI_TRANSITIONS=310} [2024-06-28 02:25:24,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-28 02:25:24,008 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 310 transitions, 3350 flow [2024-06-28 02:25:24,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:24,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:24,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:24,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:25:24,009 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:24,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:24,009 INFO L85 PathProgramCache]: Analyzing trace with hash 117768409, now seen corresponding path program 4 times [2024-06-28 02:25:24,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:24,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561347960] [2024-06-28 02:25:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:24,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:25,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:25,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561347960] [2024-06-28 02:25:25,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561347960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:25,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:25,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:25,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080366733] [2024-06-28 02:25:25,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:25,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:25,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:25,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:25,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:25,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:25,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 310 transitions, 3350 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:25,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:25,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:25,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:26,235 INFO L124 PetriNetUnfolderBase]: 934/1663 cut-off events. [2024-06-28 02:25:26,236 INFO L125 PetriNetUnfolderBase]: For 139962/139962 co-relation queries the response was YES. [2024-06-28 02:25:26,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10490 conditions, 1663 events. 934/1663 cut-off events. For 139962/139962 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9402 event pairs, 139 based on Foata normal form. 2/1664 useless extension candidates. Maximal degree in co-relation 10339. Up to 1397 conditions per place. [2024-06-28 02:25:26,254 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 75 changer transitions 0/332 dead transitions. [2024-06-28 02:25:26,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 332 transitions, 4116 flow [2024-06-28 02:25:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:25:26,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:25:26,255 INFO L175 Difference]: Start difference. First operand has 326 places, 310 transitions, 3350 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:25:26,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 332 transitions, 4116 flow [2024-06-28 02:25:26,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 332 transitions, 3994 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:26,806 INFO L231 Difference]: Finished difference. Result has 329 places, 312 transitions, 3432 flow [2024-06-28 02:25:26,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3228, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3432, PETRI_PLACES=329, PETRI_TRANSITIONS=312} [2024-06-28 02:25:26,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-28 02:25:26,807 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 312 transitions, 3432 flow [2024-06-28 02:25:26,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:26,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:26,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:26,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:25:26,808 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:26,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash -53233915, now seen corresponding path program 10 times [2024-06-28 02:25:26,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:26,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39327727] [2024-06-28 02:25:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:26,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:27,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:27,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39327727] [2024-06-28 02:25:27,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39327727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:27,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:27,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:27,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137019615] [2024-06-28 02:25:27,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:27,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:27,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:27,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:27,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:27,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 312 transitions, 3432 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:27,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:27,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:27,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:28,232 INFO L124 PetriNetUnfolderBase]: 938/1671 cut-off events. [2024-06-28 02:25:28,232 INFO L125 PetriNetUnfolderBase]: For 142798/142798 co-relation queries the response was YES. [2024-06-28 02:25:28,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10622 conditions, 1671 events. 938/1671 cut-off events. For 142798/142798 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9484 event pairs, 159 based on Foata normal form. 2/1672 useless extension candidates. Maximal degree in co-relation 10470. Up to 1503 conditions per place. [2024-06-28 02:25:28,251 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 282 selfloop transitions, 45 changer transitions 0/329 dead transitions. [2024-06-28 02:25:28,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 329 transitions, 4158 flow [2024-06-28 02:25:28,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:25:28,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 02:25:28,252 INFO L175 Difference]: Start difference. First operand has 329 places, 312 transitions, 3432 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:25:28,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 329 transitions, 4158 flow [2024-06-28 02:25:28,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 329 transitions, 3980 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:28,828 INFO L231 Difference]: Finished difference. Result has 330 places, 313 transitions, 3382 flow [2024-06-28 02:25:28,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3382, PETRI_PLACES=330, PETRI_TRANSITIONS=313} [2024-06-28 02:25:28,828 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-28 02:25:28,828 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 313 transitions, 3382 flow [2024-06-28 02:25:28,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:28,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:28,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:28,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 02:25:28,829 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:28,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:28,829 INFO L85 PathProgramCache]: Analyzing trace with hash -48465371, now seen corresponding path program 5 times [2024-06-28 02:25:28,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:28,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225781547] [2024-06-28 02:25:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:28,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:30,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:30,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225781547] [2024-06-28 02:25:30,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225781547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:30,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:30,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:30,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409758329] [2024-06-28 02:25:30,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:30,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:30,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:30,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:30,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:30,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:30,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 313 transitions, 3382 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:30,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:30,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:30,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:31,045 INFO L124 PetriNetUnfolderBase]: 939/1673 cut-off events. [2024-06-28 02:25:31,045 INFO L125 PetriNetUnfolderBase]: For 139508/139508 co-relation queries the response was YES. [2024-06-28 02:25:31,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10476 conditions, 1673 events. 939/1673 cut-off events. For 139508/139508 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9505 event pairs, 163 based on Foata normal form. 2/1674 useless extension candidates. Maximal degree in co-relation 10323. Up to 1469 conditions per place. [2024-06-28 02:25:31,064 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 56 changer transitions 0/333 dead transitions. [2024-06-28 02:25:31,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 333 transitions, 4144 flow [2024-06-28 02:25:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:25:31,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 02:25:31,066 INFO L175 Difference]: Start difference. First operand has 330 places, 313 transitions, 3382 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:25:31,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 333 transitions, 4144 flow [2024-06-28 02:25:31,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 333 transitions, 4026 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:31,661 INFO L231 Difference]: Finished difference. Result has 333 places, 315 transitions, 3434 flow [2024-06-28 02:25:31,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3434, PETRI_PLACES=333, PETRI_TRANSITIONS=315} [2024-06-28 02:25:31,661 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-28 02:25:31,661 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 315 transitions, 3434 flow [2024-06-28 02:25:31,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:31,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:31,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:31,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 02:25:31,662 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:31,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2129410009, now seen corresponding path program 11 times [2024-06-28 02:25:31,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:31,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707848004] [2024-06-28 02:25:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:32,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:32,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707848004] [2024-06-28 02:25:32,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707848004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:32,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:32,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:32,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818759134] [2024-06-28 02:25:32,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:32,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:32,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:32,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:32,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:32,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:32,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 315 transitions, 3434 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:32,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:32,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:32,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:33,287 INFO L124 PetriNetUnfolderBase]: 943/1682 cut-off events. [2024-06-28 02:25:33,287 INFO L125 PetriNetUnfolderBase]: For 142485/142487 co-relation queries the response was YES. [2024-06-28 02:25:33,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10565 conditions, 1682 events. 943/1682 cut-off events. For 142485/142487 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9590 event pairs, 175 based on Foata normal form. 2/1683 useless extension candidates. Maximal degree in co-relation 10411. Up to 1515 conditions per place. [2024-06-28 02:25:33,306 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 283 selfloop transitions, 46 changer transitions 0/331 dead transitions. [2024-06-28 02:25:33,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 331 transitions, 4168 flow [2024-06-28 02:25:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:33,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:25:33,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 02:25:33,307 INFO L175 Difference]: Start difference. First operand has 333 places, 315 transitions, 3434 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:25:33,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 331 transitions, 4168 flow [2024-06-28 02:25:33,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 331 transitions, 4024 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:33,934 INFO L231 Difference]: Finished difference. Result has 334 places, 316 transitions, 3422 flow [2024-06-28 02:25:33,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3290, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3422, PETRI_PLACES=334, PETRI_TRANSITIONS=316} [2024-06-28 02:25:33,934 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-28 02:25:33,934 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 316 transitions, 3422 flow [2024-06-28 02:25:33,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:33,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:33,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:33,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 02:25:33,935 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:33,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:33,935 INFO L85 PathProgramCache]: Analyzing trace with hash 11857969, now seen corresponding path program 6 times [2024-06-28 02:25:33,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:33,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028759438] [2024-06-28 02:25:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:33,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:36,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:36,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028759438] [2024-06-28 02:25:36,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028759438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:36,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:36,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:36,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021177365] [2024-06-28 02:25:36,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:36,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:36,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:36,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:36,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:36,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 316 transitions, 3422 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:36,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:36,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:36,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:37,202 INFO L124 PetriNetUnfolderBase]: 959/1708 cut-off events. [2024-06-28 02:25:37,202 INFO L125 PetriNetUnfolderBase]: For 157690/157692 co-relation queries the response was YES. [2024-06-28 02:25:37,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10972 conditions, 1708 events. 959/1708 cut-off events. For 157690/157692 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9745 event pairs, 96 based on Foata normal form. 2/1709 useless extension candidates. Maximal degree in co-relation 10817. Up to 1214 conditions per place. [2024-06-28 02:25:37,221 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 129 changer transitions 0/346 dead transitions. [2024-06-28 02:25:37,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 346 transitions, 4532 flow [2024-06-28 02:25:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:25:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:25:37,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 02:25:37,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 02:25:37,222 INFO L175 Difference]: Start difference. First operand has 334 places, 316 transitions, 3422 flow. Second operand 12 states and 140 transitions. [2024-06-28 02:25:37,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 346 transitions, 4532 flow [2024-06-28 02:25:37,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 346 transitions, 4410 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:37,933 INFO L231 Difference]: Finished difference. Result has 338 places, 320 transitions, 3676 flow [2024-06-28 02:25:37,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3300, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3676, PETRI_PLACES=338, PETRI_TRANSITIONS=320} [2024-06-28 02:25:37,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-28 02:25:37,933 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 320 transitions, 3676 flow [2024-06-28 02:25:37,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:37,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:37,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:37,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 02:25:37,934 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:37,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:37,934 INFO L85 PathProgramCache]: Analyzing trace with hash -227407867, now seen corresponding path program 12 times [2024-06-28 02:25:37,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:37,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558514819] [2024-06-28 02:25:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:37,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:39,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:39,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558514819] [2024-06-28 02:25:39,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558514819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:39,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:39,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:39,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522367739] [2024-06-28 02:25:39,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:39,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:39,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:39,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:39,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:39,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 320 transitions, 3676 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:39,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:39,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:39,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:39,825 INFO L124 PetriNetUnfolderBase]: 963/1716 cut-off events. [2024-06-28 02:25:39,825 INFO L125 PetriNetUnfolderBase]: For 160911/160913 co-relation queries the response was YES. [2024-06-28 02:25:39,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11278 conditions, 1716 events. 963/1716 cut-off events. For 160911/160913 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9820 event pairs, 164 based on Foata normal form. 2/1717 useless extension candidates. Maximal degree in co-relation 11122. Up to 1487 conditions per place. [2024-06-28 02:25:39,845 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 274 selfloop transitions, 63 changer transitions 0/339 dead transitions. [2024-06-28 02:25:39,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 339 transitions, 4444 flow [2024-06-28 02:25:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:39,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:25:39,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 02:25:39,846 INFO L175 Difference]: Start difference. First operand has 338 places, 320 transitions, 3676 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:25:39,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 339 transitions, 4444 flow [2024-06-28 02:25:40,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 339 transitions, 4210 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:40,639 INFO L231 Difference]: Finished difference. Result has 340 places, 321 transitions, 3611 flow [2024-06-28 02:25:40,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3611, PETRI_PLACES=340, PETRI_TRANSITIONS=321} [2024-06-28 02:25:40,640 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-28 02:25:40,640 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 321 transitions, 3611 flow [2024-06-28 02:25:40,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:40,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:40,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:40,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 02:25:40,641 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:40,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:40,641 INFO L85 PathProgramCache]: Analyzing trace with hash -227400923, now seen corresponding path program 7 times [2024-06-28 02:25:40,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:40,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523026162] [2024-06-28 02:25:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:40,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:42,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:42,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523026162] [2024-06-28 02:25:42,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523026162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:42,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:42,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:42,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040547034] [2024-06-28 02:25:42,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:42,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:42,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:42,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:42,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 321 transitions, 3611 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:42,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:42,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:42,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:42,959 INFO L124 PetriNetUnfolderBase]: 969/1726 cut-off events. [2024-06-28 02:25:42,959 INFO L125 PetriNetUnfolderBase]: For 163396/163398 co-relation queries the response was YES. [2024-06-28 02:25:42,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11333 conditions, 1726 events. 969/1726 cut-off events. For 163396/163398 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9899 event pairs, 160 based on Foata normal form. 2/1727 useless extension candidates. Maximal degree in co-relation 11175. Up to 1430 conditions per place. [2024-06-28 02:25:42,979 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 264 selfloop transitions, 77 changer transitions 0/343 dead transitions. [2024-06-28 02:25:42,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 343 transitions, 4417 flow [2024-06-28 02:25:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:42,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:25:42,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-28 02:25:42,980 INFO L175 Difference]: Start difference. First operand has 340 places, 321 transitions, 3611 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:25:42,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 343 transitions, 4417 flow [2024-06-28 02:25:43,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 343 transitions, 4260 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:43,762 INFO L231 Difference]: Finished difference. Result has 343 places, 323 transitions, 3676 flow [2024-06-28 02:25:43,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3454, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3676, PETRI_PLACES=343, PETRI_TRANSITIONS=323} [2024-06-28 02:25:43,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-28 02:25:43,762 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 323 transitions, 3676 flow [2024-06-28 02:25:43,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:43,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:43,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:43,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 02:25:43,763 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:43,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:43,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1972461251, now seen corresponding path program 8 times [2024-06-28 02:25:43,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:43,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399787758] [2024-06-28 02:25:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:43,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:45,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:45,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399787758] [2024-06-28 02:25:45,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399787758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:45,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:45,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:45,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090790872] [2024-06-28 02:25:45,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:45,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:45,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:45,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:45,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:45,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:45,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 323 transitions, 3676 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:45,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:45,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:45,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:46,260 INFO L124 PetriNetUnfolderBase]: 991/1762 cut-off events. [2024-06-28 02:25:46,260 INFO L125 PetriNetUnfolderBase]: For 180102/180104 co-relation queries the response was YES. [2024-06-28 02:25:46,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11930 conditions, 1762 events. 991/1762 cut-off events. For 180102/180104 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10116 event pairs, 168 based on Foata normal form. 2/1763 useless extension candidates. Maximal degree in co-relation 11771. Up to 1516 conditions per place. [2024-06-28 02:25:46,278 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 286 selfloop transitions, 65 changer transitions 0/353 dead transitions. [2024-06-28 02:25:46,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 353 transitions, 4876 flow [2024-06-28 02:25:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:25:46,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:25:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:25:46,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-28 02:25:46,279 INFO L175 Difference]: Start difference. First operand has 343 places, 323 transitions, 3676 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:25:46,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 353 transitions, 4876 flow [2024-06-28 02:25:47,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 353 transitions, 4624 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:47,045 INFO L231 Difference]: Finished difference. Result has 347 places, 329 transitions, 3765 flow [2024-06-28 02:25:47,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3476, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3765, PETRI_PLACES=347, PETRI_TRANSITIONS=329} [2024-06-28 02:25:47,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-28 02:25:47,049 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 329 transitions, 3765 flow [2024-06-28 02:25:47,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:47,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:47,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:47,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 02:25:47,049 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:47,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:47,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1735809297, now seen corresponding path program 13 times [2024-06-28 02:25:47,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:47,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257344883] [2024-06-28 02:25:47,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:47,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:48,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:48,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257344883] [2024-06-28 02:25:48,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257344883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:48,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:48,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:48,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52878399] [2024-06-28 02:25:48,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:48,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:48,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:48,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:48,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:48,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:48,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 329 transitions, 3765 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:48,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:48,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:48,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:48,872 INFO L124 PetriNetUnfolderBase]: 995/1770 cut-off events. [2024-06-28 02:25:48,872 INFO L125 PetriNetUnfolderBase]: For 183287/183289 co-relation queries the response was YES. [2024-06-28 02:25:48,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11932 conditions, 1770 events. 995/1770 cut-off events. For 183287/183289 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10168 event pairs, 179 based on Foata normal form. 2/1771 useless extension candidates. Maximal degree in co-relation 11771. Up to 1599 conditions per place. [2024-06-28 02:25:48,893 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 295 selfloop transitions, 48 changer transitions 0/345 dead transitions. [2024-06-28 02:25:48,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 345 transitions, 4533 flow [2024-06-28 02:25:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:48,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:25:48,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-28 02:25:48,895 INFO L175 Difference]: Start difference. First operand has 347 places, 329 transitions, 3765 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:25:48,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 345 transitions, 4533 flow [2024-06-28 02:25:49,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 345 transitions, 4384 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:49,602 INFO L231 Difference]: Finished difference. Result has 349 places, 330 transitions, 3756 flow [2024-06-28 02:25:49,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3616, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3756, PETRI_PLACES=349, PETRI_TRANSITIONS=330} [2024-06-28 02:25:49,602 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-28 02:25:49,602 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 330 transitions, 3756 flow [2024-06-28 02:25:49,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:49,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:49,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:49,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 02:25:49,603 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:49,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash -643661755, now seen corresponding path program 14 times [2024-06-28 02:25:49,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:49,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008161937] [2024-06-28 02:25:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:49,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:50,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:50,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008161937] [2024-06-28 02:25:50,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008161937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:50,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:50,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:50,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941970369] [2024-06-28 02:25:50,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:50,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:50,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:50,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:50,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:50,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 330 transitions, 3756 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:50,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:50,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:50,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:51,066 INFO L124 PetriNetUnfolderBase]: 999/1777 cut-off events. [2024-06-28 02:25:51,066 INFO L125 PetriNetUnfolderBase]: For 185858/185858 co-relation queries the response was YES. [2024-06-28 02:25:51,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12017 conditions, 1777 events. 999/1777 cut-off events. For 185858/185858 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10253 event pairs, 279 based on Foata normal form. 2/1778 useless extension candidates. Maximal degree in co-relation 11854. Up to 1736 conditions per place. [2024-06-28 02:25:51,087 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 325 selfloop transitions, 16 changer transitions 0/343 dead transitions. [2024-06-28 02:25:51,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 343 transitions, 4510 flow [2024-06-28 02:25:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:51,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-28 02:25:51,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-28 02:25:51,091 INFO L175 Difference]: Start difference. First operand has 349 places, 330 transitions, 3756 flow. Second operand 10 states and 98 transitions. [2024-06-28 02:25:51,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 343 transitions, 4510 flow [2024-06-28 02:25:51,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 343 transitions, 4380 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:51,813 INFO L231 Difference]: Finished difference. Result has 351 places, 331 transitions, 3704 flow [2024-06-28 02:25:51,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3626, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3704, PETRI_PLACES=351, PETRI_TRANSITIONS=331} [2024-06-28 02:25:51,815 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-28 02:25:51,815 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 331 transitions, 3704 flow [2024-06-28 02:25:51,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:51,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:51,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:51,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 02:25:51,818 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:51,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:51,818 INFO L85 PathProgramCache]: Analyzing trace with hash -404544037, now seen corresponding path program 15 times [2024-06-28 02:25:51,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:51,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716961952] [2024-06-28 02:25:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:51,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:52,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:52,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716961952] [2024-06-28 02:25:52,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716961952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:52,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:52,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:52,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721978850] [2024-06-28 02:25:52,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:52,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:52,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:52,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:52,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 331 transitions, 3704 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:52,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:52,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:52,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:53,491 INFO L124 PetriNetUnfolderBase]: 1003/1785 cut-off events. [2024-06-28 02:25:53,491 INFO L125 PetriNetUnfolderBase]: For 188822/188822 co-relation queries the response was YES. [2024-06-28 02:25:53,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11993 conditions, 1785 events. 1003/1785 cut-off events. For 188822/188822 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10281 event pairs, 186 based on Foata normal form. 2/1786 useless extension candidates. Maximal degree in co-relation 11829. Up to 1619 conditions per place. [2024-06-28 02:25:53,514 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 300 selfloop transitions, 45 changer transitions 0/347 dead transitions. [2024-06-28 02:25:53,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 347 transitions, 4476 flow [2024-06-28 02:25:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:53,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:25:53,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-28 02:25:53,516 INFO L175 Difference]: Start difference. First operand has 351 places, 331 transitions, 3704 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:25:53,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 347 transitions, 4476 flow [2024-06-28 02:25:54,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 347 transitions, 4408 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:54,253 INFO L231 Difference]: Finished difference. Result has 353 places, 332 transitions, 3774 flow [2024-06-28 02:25:54,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3636, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3774, PETRI_PLACES=353, PETRI_TRANSITIONS=332} [2024-06-28 02:25:54,253 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-28 02:25:54,256 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 332 transitions, 3774 flow [2024-06-28 02:25:54,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:54,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:54,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:54,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 02:25:54,256 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:54,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:54,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1867380881, now seen corresponding path program 16 times [2024-06-28 02:25:54,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:54,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119153802] [2024-06-28 02:25:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:54,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:55,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:55,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119153802] [2024-06-28 02:25:55,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119153802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:55,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:55,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:55,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292926204] [2024-06-28 02:25:55,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:55,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:55,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:55,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:55,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:55,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:55,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 332 transitions, 3774 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:55,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:55,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:55,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:55,957 INFO L124 PetriNetUnfolderBase]: 1007/1794 cut-off events. [2024-06-28 02:25:55,957 INFO L125 PetriNetUnfolderBase]: For 192411/192413 co-relation queries the response was YES. [2024-06-28 02:25:55,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12134 conditions, 1794 events. 1007/1794 cut-off events. For 192411/192413 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10357 event pairs, 189 based on Foata normal form. 2/1795 useless extension candidates. Maximal degree in co-relation 11969. Up to 1627 conditions per place. [2024-06-28 02:25:55,982 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 302 selfloop transitions, 44 changer transitions 0/348 dead transitions. [2024-06-28 02:25:55,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 348 transitions, 4548 flow [2024-06-28 02:25:55,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:25:55,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-28 02:25:55,983 INFO L175 Difference]: Start difference. First operand has 353 places, 332 transitions, 3774 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:25:55,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 348 transitions, 4548 flow [2024-06-28 02:25:56,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 348 transitions, 4420 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:56,879 INFO L231 Difference]: Finished difference. Result has 355 places, 333 transitions, 3784 flow [2024-06-28 02:25:56,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3646, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3784, PETRI_PLACES=355, PETRI_TRANSITIONS=333} [2024-06-28 02:25:56,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-28 02:25:56,879 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 333 transitions, 3784 flow [2024-06-28 02:25:56,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:56,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:56,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:56,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 02:25:56,880 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:56,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1483312807, now seen corresponding path program 17 times [2024-06-28 02:25:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:56,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974990382] [2024-06-28 02:25:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:56,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:57,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:57,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974990382] [2024-06-28 02:25:57,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974990382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:57,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:57,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:57,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768547934] [2024-06-28 02:25:57,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:57,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:57,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:57,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:57,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:58,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:58,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 333 transitions, 3784 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:58,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:58,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:58,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:58,535 INFO L124 PetriNetUnfolderBase]: 1011/1802 cut-off events. [2024-06-28 02:25:58,535 INFO L125 PetriNetUnfolderBase]: For 195962/195964 co-relation queries the response was YES. [2024-06-28 02:25:58,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12196 conditions, 1802 events. 1011/1802 cut-off events. For 195962/195964 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10410 event pairs, 184 based on Foata normal form. 2/1803 useless extension candidates. Maximal degree in co-relation 12030. Up to 1631 conditions per place. [2024-06-28 02:25:58,557 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 300 selfloop transitions, 47 changer transitions 0/349 dead transitions. [2024-06-28 02:25:58,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 349 transitions, 4566 flow [2024-06-28 02:25:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:58,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:25:58,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-28 02:25:58,559 INFO L175 Difference]: Start difference. First operand has 355 places, 333 transitions, 3784 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:25:58,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 349 transitions, 4566 flow [2024-06-28 02:25:59,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 349 transitions, 4438 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:59,359 INFO L231 Difference]: Finished difference. Result has 357 places, 334 transitions, 3802 flow [2024-06-28 02:25:59,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3656, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3802, PETRI_PLACES=357, PETRI_TRANSITIONS=334} [2024-06-28 02:25:59,371 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-28 02:25:59,371 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 334 transitions, 3802 flow [2024-06-28 02:25:59,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:59,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:59,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:59,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 02:25:59,372 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:59,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:59,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1862612337, now seen corresponding path program 9 times [2024-06-28 02:25:59,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:59,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417473976] [2024-06-28 02:25:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:59,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:00,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:00,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417473976] [2024-06-28 02:26:00,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417473976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:00,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:00,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:00,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928910749] [2024-06-28 02:26:00,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:00,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:00,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:00,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:00,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 334 transitions, 3802 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:00,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:00,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:00,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:01,689 INFO L124 PetriNetUnfolderBase]: 1017/1812 cut-off events. [2024-06-28 02:26:01,689 INFO L125 PetriNetUnfolderBase]: For 199188/199190 co-relation queries the response was YES. [2024-06-28 02:26:01,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12266 conditions, 1812 events. 1017/1812 cut-off events. For 199188/199190 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10496 event pairs, 191 based on Foata normal form. 2/1813 useless extension candidates. Maximal degree in co-relation 12099. Up to 1635 conditions per place. [2024-06-28 02:26:01,711 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 302 selfloop transitions, 49 changer transitions 0/353 dead transitions. [2024-06-28 02:26:01,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 353 transitions, 4620 flow [2024-06-28 02:26:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:26:01,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-28 02:26:01,712 INFO L175 Difference]: Start difference. First operand has 357 places, 334 transitions, 3802 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:26:01,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 353 transitions, 4620 flow [2024-06-28 02:26:02,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 353 transitions, 4484 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:02,486 INFO L231 Difference]: Finished difference. Result has 360 places, 336 transitions, 3839 flow [2024-06-28 02:26:02,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3666, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3839, PETRI_PLACES=360, PETRI_TRANSITIONS=336} [2024-06-28 02:26:02,487 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-28 02:26:02,487 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 336 transitions, 3839 flow [2024-06-28 02:26:02,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:02,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:02,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:02,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 02:26:02,487 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:02,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:02,488 INFO L85 PathProgramCache]: Analyzing trace with hash 694633945, now seen corresponding path program 10 times [2024-06-28 02:26:02,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:02,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214642168] [2024-06-28 02:26:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:02,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:03,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214642168] [2024-06-28 02:26:03,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214642168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:03,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:03,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:03,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853912870] [2024-06-28 02:26:03,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:03,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:03,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:03,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:03,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:03,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:03,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 336 transitions, 3839 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:03,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:03,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:03,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:04,686 INFO L124 PetriNetUnfolderBase]: 1013/1806 cut-off events. [2024-06-28 02:26:04,700 INFO L125 PetriNetUnfolderBase]: For 187036/187038 co-relation queries the response was YES. [2024-06-28 02:26:04,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11947 conditions, 1806 events. 1013/1806 cut-off events. For 187036/187038 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10462 event pairs, 111 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 11779. Up to 877 conditions per place. [2024-06-28 02:26:04,801 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 166 changer transitions 0/357 dead transitions. [2024-06-28 02:26:04,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 357 transitions, 4861 flow [2024-06-28 02:26:04,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:04,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:26:04,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-28 02:26:04,803 INFO L175 Difference]: Start difference. First operand has 360 places, 336 transitions, 3839 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:26:04,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 357 transitions, 4861 flow [2024-06-28 02:26:05,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 357 transitions, 4680 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:05,577 INFO L231 Difference]: Finished difference. Result has 362 places, 336 transitions, 3995 flow [2024-06-28 02:26:05,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3658, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3995, PETRI_PLACES=362, PETRI_TRANSITIONS=336} [2024-06-28 02:26:05,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-28 02:26:05,577 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 336 transitions, 3995 flow [2024-06-28 02:26:05,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:05,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:05,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:05,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 02:26:05,578 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:05,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:05,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1154931377, now seen corresponding path program 11 times [2024-06-28 02:26:05,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:05,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641380147] [2024-06-28 02:26:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:05,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:07,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641380147] [2024-06-28 02:26:07,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641380147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:07,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:07,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370531821] [2024-06-28 02:26:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:07,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:07,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:07,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:07,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 336 transitions, 3995 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:07,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:07,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:07,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:08,436 INFO L124 PetriNetUnfolderBase]: 1009/1799 cut-off events. [2024-06-28 02:26:08,436 INFO L125 PetriNetUnfolderBase]: For 175313/175313 co-relation queries the response was YES. [2024-06-28 02:26:08,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11910 conditions, 1799 events. 1009/1799 cut-off events. For 175313/175313 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10444 event pairs, 279 based on Foata normal form. 2/1800 useless extension candidates. Maximal degree in co-relation 11741. Up to 1728 conditions per place. [2024-06-28 02:26:08,456 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 325 selfloop transitions, 24 changer transitions 0/351 dead transitions. [2024-06-28 02:26:08,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 351 transitions, 4737 flow [2024-06-28 02:26:08,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:26:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:26:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-28 02:26:08,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-28 02:26:08,458 INFO L175 Difference]: Start difference. First operand has 362 places, 336 transitions, 3995 flow. Second operand 12 states and 119 transitions. [2024-06-28 02:26:08,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 351 transitions, 4737 flow [2024-06-28 02:26:09,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 351 transitions, 4486 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:09,212 INFO L231 Difference]: Finished difference. Result has 365 places, 336 transitions, 3798 flow [2024-06-28 02:26:09,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3798, PETRI_PLACES=365, PETRI_TRANSITIONS=336} [2024-06-28 02:26:09,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-28 02:26:09,213 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 336 transitions, 3798 flow [2024-06-28 02:26:09,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:09,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:09,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:09,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 02:26:09,214 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:09,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:09,214 INFO L85 PathProgramCache]: Analyzing trace with hash 686898849, now seen corresponding path program 18 times [2024-06-28 02:26:09,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:09,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690362315] [2024-06-28 02:26:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:09,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:10,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:10,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:10,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690362315] [2024-06-28 02:26:10,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690362315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:10,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:10,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:10,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263211567] [2024-06-28 02:26:10,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:10,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:10,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:10,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:10,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:10,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:10,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 336 transitions, 3798 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:10,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:10,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:10,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:11,001 INFO L124 PetriNetUnfolderBase]: 1013/1807 cut-off events. [2024-06-28 02:26:11,001 INFO L125 PetriNetUnfolderBase]: For 178713/178713 co-relation queries the response was YES. [2024-06-28 02:26:11,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11718 conditions, 1807 events. 1013/1807 cut-off events. For 178713/178713 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10463 event pairs, 128 based on Foata normal form. 2/1808 useless extension candidates. Maximal degree in co-relation 11548. Up to 1513 conditions per place. [2024-06-28 02:26:11,025 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 275 selfloop transitions, 79 changer transitions 0/356 dead transitions. [2024-06-28 02:26:11,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 356 transitions, 4618 flow [2024-06-28 02:26:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:11,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:26:11,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:26:11,026 INFO L175 Difference]: Start difference. First operand has 365 places, 336 transitions, 3798 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:26:11,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 356 transitions, 4618 flow [2024-06-28 02:26:11,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 356 transitions, 4559 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:26:11,776 INFO L231 Difference]: Finished difference. Result has 364 places, 337 transitions, 3951 flow [2024-06-28 02:26:11,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3739, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3951, PETRI_PLACES=364, PETRI_TRANSITIONS=337} [2024-06-28 02:26:11,777 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-28 02:26:11,777 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 337 transitions, 3951 flow [2024-06-28 02:26:11,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:11,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:11,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:11,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 02:26:11,778 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:11,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:11,778 INFO L85 PathProgramCache]: Analyzing trace with hash 687144803, now seen corresponding path program 12 times [2024-06-28 02:26:11,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:11,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294089815] [2024-06-28 02:26:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:11,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:13,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:13,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294089815] [2024-06-28 02:26:13,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294089815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:13,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:13,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:13,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925640898] [2024-06-28 02:26:13,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:13,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:13,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:13,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:13,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:13,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:13,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 337 transitions, 3951 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:13,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:13,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:13,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:13,981 INFO L124 PetriNetUnfolderBase]: 1029/1834 cut-off events. [2024-06-28 02:26:13,981 INFO L125 PetriNetUnfolderBase]: For 198720/198722 co-relation queries the response was YES. [2024-06-28 02:26:13,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12415 conditions, 1834 events. 1029/1834 cut-off events. For 198720/198722 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10639 event pairs, 130 based on Foata normal form. 2/1835 useless extension candidates. Maximal degree in co-relation 12244. Up to 1482 conditions per place. [2024-06-28 02:26:14,004 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 273 selfloop transitions, 90 changer transitions 0/365 dead transitions. [2024-06-28 02:26:14,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 365 transitions, 5155 flow [2024-06-28 02:26:14,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:26:14,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-28 02:26:14,005 INFO L175 Difference]: Start difference. First operand has 364 places, 337 transitions, 3951 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:26:14,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 365 transitions, 5155 flow [2024-06-28 02:26:14,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 365 transitions, 4953 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:14,940 INFO L231 Difference]: Finished difference. Result has 367 places, 341 transitions, 4082 flow [2024-06-28 02:26:14,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3749, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4082, PETRI_PLACES=367, PETRI_TRANSITIONS=341} [2024-06-28 02:26:14,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2024-06-28 02:26:14,956 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 341 transitions, 4082 flow [2024-06-28 02:26:14,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:14,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:14,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:14,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 02:26:14,957 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:14,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:14,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2145109339, now seen corresponding path program 13 times [2024-06-28 02:26:14,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:14,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098609577] [2024-06-28 02:26:14,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:14,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:17,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:17,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098609577] [2024-06-28 02:26:17,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098609577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:17,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:17,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:17,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793074705] [2024-06-28 02:26:17,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:17,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:17,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:17,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:17,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:17,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 341 transitions, 4082 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:17,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:17,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:17,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:17,902 INFO L124 PetriNetUnfolderBase]: 1035/1844 cut-off events. [2024-06-28 02:26:17,902 INFO L125 PetriNetUnfolderBase]: For 201783/201785 co-relation queries the response was YES. [2024-06-28 02:26:17,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12519 conditions, 1844 events. 1035/1844 cut-off events. For 201783/201785 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10715 event pairs, 131 based on Foata normal form. 2/1845 useless extension candidates. Maximal degree in co-relation 12347. Up to 1517 conditions per place. [2024-06-28 02:26:17,926 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 87 changer transitions 0/365 dead transitions. [2024-06-28 02:26:17,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 365 transitions, 4962 flow [2024-06-28 02:26:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:26:17,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 02:26:17,927 INFO L175 Difference]: Start difference. First operand has 367 places, 341 transitions, 4082 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:26:17,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 365 transitions, 4962 flow [2024-06-28 02:26:18,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 365 transitions, 4682 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:18,743 INFO L231 Difference]: Finished difference. Result has 370 places, 343 transitions, 4061 flow [2024-06-28 02:26:18,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4061, PETRI_PLACES=370, PETRI_TRANSITIONS=343} [2024-06-28 02:26:18,744 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 339 predicate places. [2024-06-28 02:26:18,744 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 343 transitions, 4061 flow [2024-06-28 02:26:18,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:18,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:18,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:18,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 02:26:18,745 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:18,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:18,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1483497381, now seen corresponding path program 14 times [2024-06-28 02:26:18,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:18,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055899015] [2024-06-28 02:26:18,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:18,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:20,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:20,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055899015] [2024-06-28 02:26:20,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055899015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:20,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:20,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:20,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116936746] [2024-06-28 02:26:20,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:20,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:20,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:20,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:20,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:20,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:20,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 343 transitions, 4061 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:20,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:20,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:20,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:20,671 INFO L124 PetriNetUnfolderBase]: 1031/1838 cut-off events. [2024-06-28 02:26:20,671 INFO L125 PetriNetUnfolderBase]: For 187075/187077 co-relation queries the response was YES. [2024-06-28 02:26:20,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12098 conditions, 1838 events. 1031/1838 cut-off events. For 187075/187077 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10703 event pairs, 187 based on Foata normal form. 2/1839 useless extension candidates. Maximal degree in co-relation 11925. Up to 1657 conditions per place. [2024-06-28 02:26:20,694 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 307 selfloop transitions, 51 changer transitions 0/360 dead transitions. [2024-06-28 02:26:20,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 360 transitions, 4829 flow [2024-06-28 02:26:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:26:20,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-28 02:26:20,695 INFO L175 Difference]: Start difference. First operand has 370 places, 343 transitions, 4061 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:26:20,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 360 transitions, 4829 flow [2024-06-28 02:26:21,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 360 transitions, 4592 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:21,431 INFO L231 Difference]: Finished difference. Result has 372 places, 343 transitions, 3931 flow [2024-06-28 02:26:21,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3824, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3931, PETRI_PLACES=372, PETRI_TRANSITIONS=343} [2024-06-28 02:26:21,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-28 02:26:21,431 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 343 transitions, 3931 flow [2024-06-28 02:26:21,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:21,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:21,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:21,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 02:26:21,432 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:21,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash -233836957, now seen corresponding path program 19 times [2024-06-28 02:26:21,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:21,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628123179] [2024-06-28 02:26:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:21,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:22,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:22,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628123179] [2024-06-28 02:26:22,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628123179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:22,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:22,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:22,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339331112] [2024-06-28 02:26:22,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:22,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:22,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:22,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:22,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:22,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:22,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 343 transitions, 3931 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:22,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:22,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:22,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:23,179 INFO L124 PetriNetUnfolderBase]: 1035/1846 cut-off events. [2024-06-28 02:26:23,180 INFO L125 PetriNetUnfolderBase]: For 190652/190654 co-relation queries the response was YES. [2024-06-28 02:26:23,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12052 conditions, 1846 events. 1035/1846 cut-off events. For 190652/190654 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10771 event pairs, 185 based on Foata normal form. 2/1847 useless extension candidates. Maximal degree in co-relation 11878. Up to 1644 conditions per place. [2024-06-28 02:26:23,202 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 303 selfloop transitions, 56 changer transitions 0/361 dead transitions. [2024-06-28 02:26:23,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 361 transitions, 4751 flow [2024-06-28 02:26:23,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:26:23,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:26:23,203 INFO L175 Difference]: Start difference. First operand has 372 places, 343 transitions, 3931 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:26:23,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 361 transitions, 4751 flow [2024-06-28 02:26:23,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 361 transitions, 4646 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:23,830 INFO L231 Difference]: Finished difference. Result has 373 places, 344 transitions, 3996 flow [2024-06-28 02:26:23,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3996, PETRI_PLACES=373, PETRI_TRANSITIONS=344} [2024-06-28 02:26:23,830 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-28 02:26:23,830 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 344 transitions, 3996 flow [2024-06-28 02:26:23,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:23,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:23,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:23,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 02:26:23,831 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:23,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash -257727869, now seen corresponding path program 15 times [2024-06-28 02:26:23,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:23,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427779771] [2024-06-28 02:26:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:23,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:25,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:25,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427779771] [2024-06-28 02:26:25,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427779771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:25,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:25,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:25,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272701247] [2024-06-28 02:26:25,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:25,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:25,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:25,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:25,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:25,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 344 transitions, 3996 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:25,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:25,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:25,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:26,202 INFO L124 PetriNetUnfolderBase]: 1041/1856 cut-off events. [2024-06-28 02:26:26,202 INFO L125 PetriNetUnfolderBase]: For 193912/193914 co-relation queries the response was YES. [2024-06-28 02:26:26,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12188 conditions, 1856 events. 1041/1856 cut-off events. For 193912/193914 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10801 event pairs, 127 based on Foata normal form. 2/1857 useless extension candidates. Maximal degree in co-relation 12013. Up to 1529 conditions per place. [2024-06-28 02:26:26,226 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 279 selfloop transitions, 86 changer transitions 0/367 dead transitions. [2024-06-28 02:26:26,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 367 transitions, 4854 flow [2024-06-28 02:26:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:26,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:26:26,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 02:26:26,228 INFO L175 Difference]: Start difference. First operand has 373 places, 344 transitions, 3996 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:26:26,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 367 transitions, 4854 flow [2024-06-28 02:26:27,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 367 transitions, 4696 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:27,083 INFO L231 Difference]: Finished difference. Result has 376 places, 346 transitions, 4075 flow [2024-06-28 02:26:27,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3838, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4075, PETRI_PLACES=376, PETRI_TRANSITIONS=346} [2024-06-28 02:26:27,084 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-28 02:26:27,084 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 346 transitions, 4075 flow [2024-06-28 02:26:27,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:27,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:27,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:27,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 02:26:27,085 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:27,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:27,085 INFO L85 PathProgramCache]: Analyzing trace with hash -264163903, now seen corresponding path program 20 times [2024-06-28 02:26:27,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:27,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083905239] [2024-06-28 02:26:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:27,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:28,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:28,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083905239] [2024-06-28 02:26:28,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083905239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:28,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:28,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:28,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089965800] [2024-06-28 02:26:28,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:28,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:28,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:28,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 346 transitions, 4075 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:28,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:28,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:28,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:28,855 INFO L124 PetriNetUnfolderBase]: 1045/1864 cut-off events. [2024-06-28 02:26:28,855 INFO L125 PetriNetUnfolderBase]: For 193920/193922 co-relation queries the response was YES. [2024-06-28 02:26:28,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12306 conditions, 1864 events. 1045/1864 cut-off events. For 193920/193922 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10874 event pairs, 135 based on Foata normal form. 2/1865 useless extension candidates. Maximal degree in co-relation 12130. Up to 1583 conditions per place. [2024-06-28 02:26:28,880 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 286 selfloop transitions, 76 changer transitions 0/364 dead transitions. [2024-06-28 02:26:28,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 364 transitions, 4903 flow [2024-06-28 02:26:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:26:28,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-28 02:26:28,882 INFO L175 Difference]: Start difference. First operand has 376 places, 346 transitions, 4075 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:26:28,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 364 transitions, 4903 flow [2024-06-28 02:26:29,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 364 transitions, 4692 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:29,641 INFO L231 Difference]: Finished difference. Result has 377 places, 347 transitions, 4072 flow [2024-06-28 02:26:29,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3864, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4072, PETRI_PLACES=377, PETRI_TRANSITIONS=347} [2024-06-28 02:26:29,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-28 02:26:29,642 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 347 transitions, 4072 flow [2024-06-28 02:26:29,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:29,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:29,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:29,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 02:26:29,642 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:29,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash -264168553, now seen corresponding path program 21 times [2024-06-28 02:26:29,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:29,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327916507] [2024-06-28 02:26:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:29,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:30,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:30,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327916507] [2024-06-28 02:26:30,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327916507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:30,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:30,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:30,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854727366] [2024-06-28 02:26:30,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:30,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:30,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:30,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:30,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:30,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:30,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 347 transitions, 4072 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:30,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:30,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:30,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:31,280 INFO L124 PetriNetUnfolderBase]: 1049/1872 cut-off events. [2024-06-28 02:26:31,280 INFO L125 PetriNetUnfolderBase]: For 197705/197707 co-relation queries the response was YES. [2024-06-28 02:26:31,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12374 conditions, 1872 events. 1049/1872 cut-off events. For 197705/197707 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10957 event pairs, 122 based on Foata normal form. 2/1873 useless extension candidates. Maximal degree in co-relation 12197. Up to 1409 conditions per place. [2024-06-28 02:26:31,303 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 105 changer transitions 0/365 dead transitions. [2024-06-28 02:26:31,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 365 transitions, 4902 flow [2024-06-28 02:26:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:26:31,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 02:26:31,305 INFO L175 Difference]: Start difference. First operand has 377 places, 347 transitions, 4072 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:26:31,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 365 transitions, 4902 flow [2024-06-28 02:26:32,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 365 transitions, 4704 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:32,083 INFO L231 Difference]: Finished difference. Result has 379 places, 348 transitions, 4142 flow [2024-06-28 02:26:32,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4142, PETRI_PLACES=379, PETRI_TRANSITIONS=348} [2024-06-28 02:26:32,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-28 02:26:32,083 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 348 transitions, 4142 flow [2024-06-28 02:26:32,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:32,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:32,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:32,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 02:26:32,084 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:32,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash 25321557, now seen corresponding path program 16 times [2024-06-28 02:26:32,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:32,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314918070] [2024-06-28 02:26:32,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:32,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:33,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:33,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314918070] [2024-06-28 02:26:33,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314918070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:33,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:33,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:33,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216033159] [2024-06-28 02:26:33,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:33,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:33,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:33,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:33,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:33,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:33,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 348 transitions, 4142 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:33,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:33,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:33,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:34,762 INFO L124 PetriNetUnfolderBase]: 1061/1892 cut-off events. [2024-06-28 02:26:34,762 INFO L125 PetriNetUnfolderBase]: For 200751/200753 co-relation queries the response was YES. [2024-06-28 02:26:34,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12546 conditions, 1892 events. 1061/1892 cut-off events. For 200751/200753 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11122 event pairs, 177 based on Foata normal form. 2/1893 useless extension candidates. Maximal degree in co-relation 12368. Up to 1530 conditions per place. [2024-06-28 02:26:34,786 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 96 changer transitions 0/374 dead transitions. [2024-06-28 02:26:34,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 374 transitions, 5310 flow [2024-06-28 02:26:34,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:26:34,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:26:34,788 INFO L175 Difference]: Start difference. First operand has 379 places, 348 transitions, 4142 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:26:34,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 374 transitions, 5310 flow [2024-06-28 02:26:35,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 374 transitions, 5052 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:35,681 INFO L231 Difference]: Finished difference. Result has 382 places, 352 transitions, 4174 flow [2024-06-28 02:26:35,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3884, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4174, PETRI_PLACES=382, PETRI_TRANSITIONS=352} [2024-06-28 02:26:35,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-28 02:26:35,681 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 352 transitions, 4174 flow [2024-06-28 02:26:35,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:35,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:35,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:35,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 02:26:35,682 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:35,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash -227161603, now seen corresponding path program 2 times [2024-06-28 02:26:35,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:35,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893253030] [2024-06-28 02:26:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:35,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:37,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:37,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893253030] [2024-06-28 02:26:37,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893253030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:37,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:37,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:37,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885258610] [2024-06-28 02:26:37,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:37,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:37,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:37,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:37,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:37,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:37,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 352 transitions, 4174 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:37,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:37,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:37,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:38,572 INFO L124 PetriNetUnfolderBase]: 1058/1887 cut-off events. [2024-06-28 02:26:38,573 INFO L125 PetriNetUnfolderBase]: For 185179/185181 co-relation queries the response was YES. [2024-06-28 02:26:38,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12173 conditions, 1887 events. 1058/1887 cut-off events. For 185179/185181 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11090 event pairs, 239 based on Foata normal form. 2/1888 useless extension candidates. Maximal degree in co-relation 11994. Up to 1758 conditions per place. [2024-06-28 02:26:38,597 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 328 selfloop transitions, 38 changer transitions 0/368 dead transitions. [2024-06-28 02:26:38,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 368 transitions, 4960 flow [2024-06-28 02:26:38,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:38,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 02:26:38,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-28 02:26:38,598 INFO L175 Difference]: Start difference. First operand has 382 places, 352 transitions, 4174 flow. Second operand 11 states and 114 transitions. [2024-06-28 02:26:38,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 368 transitions, 4960 flow [2024-06-28 02:26:39,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 368 transitions, 4372 flow, removed 37 selfloop flow, removed 13 redundant places. [2024-06-28 02:26:39,335 INFO L231 Difference]: Finished difference. Result has 380 places, 352 transitions, 3668 flow [2024-06-28 02:26:39,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3586, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3668, PETRI_PLACES=380, PETRI_TRANSITIONS=352} [2024-06-28 02:26:39,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-28 02:26:39,336 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 352 transitions, 3668 flow [2024-06-28 02:26:39,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:39,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:39,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:39,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 02:26:39,336 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:39,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:39,336 INFO L85 PathProgramCache]: Analyzing trace with hash -233841607, now seen corresponding path program 22 times [2024-06-28 02:26:39,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:39,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475946265] [2024-06-28 02:26:39,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:39,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:40,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:40,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475946265] [2024-06-28 02:26:40,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475946265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:40,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:40,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:40,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031048278] [2024-06-28 02:26:40,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:40,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:40,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:40,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:40,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:40,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:40,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 352 transitions, 3668 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:40,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:40,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:40,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:40,970 INFO L124 PetriNetUnfolderBase]: 1055/1882 cut-off events. [2024-06-28 02:26:40,970 INFO L125 PetriNetUnfolderBase]: For 168061/168063 co-relation queries the response was YES. [2024-06-28 02:26:40,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11146 conditions, 1882 events. 1055/1882 cut-off events. For 168061/168063 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11054 event pairs, 193 based on Foata normal form. 2/1883 useless extension candidates. Maximal degree in co-relation 10969. Up to 1680 conditions per place. [2024-06-28 02:26:40,996 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 313 selfloop transitions, 54 changer transitions 0/369 dead transitions. [2024-06-28 02:26:40,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 369 transitions, 4452 flow [2024-06-28 02:26:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:26:40,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-28 02:26:40,997 INFO L175 Difference]: Start difference. First operand has 380 places, 352 transitions, 3668 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:26:40,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 369 transitions, 4452 flow [2024-06-28 02:26:41,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 369 transitions, 4299 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 02:26:41,750 INFO L231 Difference]: Finished difference. Result has 379 places, 352 transitions, 3629 flow [2024-06-28 02:26:41,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3629, PETRI_PLACES=379, PETRI_TRANSITIONS=352} [2024-06-28 02:26:41,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-28 02:26:41,751 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 352 transitions, 3629 flow [2024-06-28 02:26:41,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:41,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:41,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:41,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 02:26:41,752 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:41,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash -263983979, now seen corresponding path program 17 times [2024-06-28 02:26:41,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:41,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227843576] [2024-06-28 02:26:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:41,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:43,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:43,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227843576] [2024-06-28 02:26:43,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227843576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:43,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:43,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:43,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776076929] [2024-06-28 02:26:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:43,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:43,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:43,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:43,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:43,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 352 transitions, 3629 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:43,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:43,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:43,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:44,174 INFO L124 PetriNetUnfolderBase]: 1051/1876 cut-off events. [2024-06-28 02:26:44,174 INFO L125 PetriNetUnfolderBase]: For 150505/150507 co-relation queries the response was YES. [2024-06-28 02:26:44,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10716 conditions, 1876 events. 1051/1876 cut-off events. For 150505/150507 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11022 event pairs, 139 based on Foata normal form. 2/1877 useless extension candidates. Maximal degree in co-relation 10540. Up to 1585 conditions per place. [2024-06-28 02:26:44,197 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 290 selfloop transitions, 79 changer transitions 0/371 dead transitions. [2024-06-28 02:26:44,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 371 transitions, 4429 flow [2024-06-28 02:26:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:26:44,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:26:44,199 INFO L175 Difference]: Start difference. First operand has 379 places, 352 transitions, 3629 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:26:44,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 371 transitions, 4429 flow [2024-06-28 02:26:45,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 371 transitions, 4101 flow, removed 51 selfloop flow, removed 11 redundant places. [2024-06-28 02:26:45,069 INFO L231 Difference]: Finished difference. Result has 379 places, 352 transitions, 3464 flow [2024-06-28 02:26:45,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3464, PETRI_PLACES=379, PETRI_TRANSITIONS=352} [2024-06-28 02:26:45,069 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-28 02:26:45,070 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 352 transitions, 3464 flow [2024-06-28 02:26:45,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:45,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:45,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:45,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 02:26:45,070 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:45,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:45,071 INFO L85 PathProgramCache]: Analyzing trace with hash -233657033, now seen corresponding path program 18 times [2024-06-28 02:26:45,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:45,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571430545] [2024-06-28 02:26:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:45,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:46,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:46,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571430545] [2024-06-28 02:26:46,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571430545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:46,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:46,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:46,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420796919] [2024-06-28 02:26:46,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:46,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:46,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:46,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:46,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:46,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:46,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 352 transitions, 3464 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:46,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:46,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:46,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:47,347 INFO L124 PetriNetUnfolderBase]: 1057/1886 cut-off events. [2024-06-28 02:26:47,347 INFO L125 PetriNetUnfolderBase]: For 140595/140597 co-relation queries the response was YES. [2024-06-28 02:26:47,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10444 conditions, 1886 events. 1057/1886 cut-off events. For 140595/140597 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11117 event pairs, 188 based on Foata normal form. 2/1887 useless extension candidates. Maximal degree in co-relation 10269. Up to 1664 conditions per place. [2024-06-28 02:26:47,370 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 309 selfloop transitions, 62 changer transitions 0/373 dead transitions. [2024-06-28 02:26:47,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 373 transitions, 4324 flow [2024-06-28 02:26:47,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:47,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:26:47,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:26:47,372 INFO L175 Difference]: Start difference. First operand has 379 places, 352 transitions, 3464 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:26:47,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 373 transitions, 4324 flow [2024-06-28 02:26:48,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 373 transitions, 4143 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 02:26:48,018 INFO L231 Difference]: Finished difference. Result has 380 places, 354 transitions, 3477 flow [2024-06-28 02:26:48,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3477, PETRI_PLACES=380, PETRI_TRANSITIONS=354} [2024-06-28 02:26:48,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-28 02:26:48,018 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 354 transitions, 3477 flow [2024-06-28 02:26:48,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:48,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:48,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:48,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 02:26:48,019 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:48,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:48,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1689883437, now seen corresponding path program 19 times [2024-06-28 02:26:48,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:48,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359288614] [2024-06-28 02:26:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:49,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:49,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359288614] [2024-06-28 02:26:49,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359288614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:49,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:49,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:49,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407785669] [2024-06-28 02:26:49,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:49,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:49,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:49,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:49,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:49,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:49,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 354 transitions, 3477 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:49,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:49,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:49,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:50,245 INFO L124 PetriNetUnfolderBase]: 1053/1880 cut-off events. [2024-06-28 02:26:50,245 INFO L125 PetriNetUnfolderBase]: For 124237/124239 co-relation queries the response was YES. [2024-06-28 02:26:50,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10076 conditions, 1880 events. 1053/1880 cut-off events. For 124237/124239 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11071 event pairs, 169 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 9900. Up to 1517 conditions per place. [2024-06-28 02:26:50,268 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 100 changer transitions 0/378 dead transitions. [2024-06-28 02:26:50,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 378 transitions, 4313 flow [2024-06-28 02:26:50,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:26:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:26:50,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 02:26:50,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-28 02:26:50,269 INFO L175 Difference]: Start difference. First operand has 380 places, 354 transitions, 3477 flow. Second operand 12 states and 137 transitions. [2024-06-28 02:26:50,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 378 transitions, 4313 flow [2024-06-28 02:26:50,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 378 transitions, 4045 flow, removed 38 selfloop flow, removed 11 redundant places. [2024-06-28 02:26:50,872 INFO L231 Difference]: Finished difference. Result has 381 places, 354 transitions, 3423 flow [2024-06-28 02:26:50,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3423, PETRI_PLACES=381, PETRI_TRANSITIONS=354} [2024-06-28 02:26:50,872 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-28 02:26:50,872 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 354 transitions, 3423 flow [2024-06-28 02:26:50,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:50,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:50,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:50,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 02:26:50,873 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:50,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash 302681040, now seen corresponding path program 1 times [2024-06-28 02:26:50,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:50,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763861511] [2024-06-28 02:26:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:50,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:52,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:52,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763861511] [2024-06-28 02:26:52,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763861511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:52,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:52,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:26:52,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269900450] [2024-06-28 02:26:52,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:52,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:26:52,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:52,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:26:52,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:26:52,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:52,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 354 transitions, 3423 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:52,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:52,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:52,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:52,987 INFO L124 PetriNetUnfolderBase]: 1057/1887 cut-off events. [2024-06-28 02:26:52,987 INFO L125 PetriNetUnfolderBase]: For 123607/123607 co-relation queries the response was YES. [2024-06-28 02:26:53,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9989 conditions, 1887 events. 1057/1887 cut-off events. For 123607/123607 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11124 event pairs, 215 based on Foata normal form. 2/1888 useless extension candidates. Maximal degree in co-relation 9814. Up to 1702 conditions per place. [2024-06-28 02:26:53,009 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 316 selfloop transitions, 56 changer transitions 0/374 dead transitions. [2024-06-28 02:26:53,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 374 transitions, 4241 flow [2024-06-28 02:26:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:26:53,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-28 02:26:53,010 INFO L175 Difference]: Start difference. First operand has 381 places, 354 transitions, 3423 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:26:53,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 374 transitions, 4241 flow [2024-06-28 02:26:53,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 374 transitions, 3888 flow, removed 13 selfloop flow, removed 14 redundant places. [2024-06-28 02:26:53,521 INFO L231 Difference]: Finished difference. Result has 378 places, 355 transitions, 3213 flow [2024-06-28 02:26:53,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3070, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3213, PETRI_PLACES=378, PETRI_TRANSITIONS=355} [2024-06-28 02:26:53,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-28 02:26:53,522 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 355 transitions, 3213 flow [2024-06-28 02:26:53,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:53,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:53,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:53,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 02:26:53,522 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:53,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2102342692, now seen corresponding path program 2 times [2024-06-28 02:26:53,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:53,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196932574] [2024-06-28 02:26:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:53,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:55,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:55,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196932574] [2024-06-28 02:26:55,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196932574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:55,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:55,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:26:55,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557738278] [2024-06-28 02:26:55,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:55,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:26:55,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:55,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:26:55,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:26:55,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:55,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 355 transitions, 3213 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:55,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:55,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:55,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:55,828 INFO L124 PetriNetUnfolderBase]: 1061/1895 cut-off events. [2024-06-28 02:26:55,828 INFO L125 PetriNetUnfolderBase]: For 121805/121805 co-relation queries the response was YES. [2024-06-28 02:26:55,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9540 conditions, 1895 events. 1061/1895 cut-off events. For 121805/121805 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11175 event pairs, 215 based on Foata normal form. 2/1896 useless extension candidates. Maximal degree in co-relation 9368. Up to 1724 conditions per place. [2024-06-28 02:26:55,853 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 324 selfloop transitions, 49 changer transitions 0/375 dead transitions. [2024-06-28 02:26:55,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 375 transitions, 4033 flow [2024-06-28 02:26:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 02:26:55,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-28 02:26:55,854 INFO L175 Difference]: Start difference. First operand has 378 places, 355 transitions, 3213 flow. Second operand 11 states and 115 transitions. [2024-06-28 02:26:55,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 375 transitions, 4033 flow [2024-06-28 02:26:56,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 375 transitions, 3906 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:56,421 INFO L231 Difference]: Finished difference. Result has 380 places, 356 transitions, 3214 flow [2024-06-28 02:26:56,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3214, PETRI_PLACES=380, PETRI_TRANSITIONS=356} [2024-06-28 02:26:56,421 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-28 02:26:56,421 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 356 transitions, 3214 flow [2024-06-28 02:26:56,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:56,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:56,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:56,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 02:26:56,422 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:56,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2018535004, now seen corresponding path program 3 times [2024-06-28 02:26:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:56,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814093052] [2024-06-28 02:26:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:56,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:58,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:58,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814093052] [2024-06-28 02:26:58,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814093052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:58,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:58,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:26:58,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661448628] [2024-06-28 02:26:58,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:26:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:26:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:26:58,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:58,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 356 transitions, 3214 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:58,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:58,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:58,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:58,860 INFO L124 PetriNetUnfolderBase]: 1065/1903 cut-off events. [2024-06-28 02:26:58,860 INFO L125 PetriNetUnfolderBase]: For 123809/123809 co-relation queries the response was YES. [2024-06-28 02:26:58,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9580 conditions, 1903 events. 1065/1903 cut-off events. For 123809/123809 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11237 event pairs, 215 based on Foata normal form. 2/1904 useless extension candidates. Maximal degree in co-relation 9407. Up to 1746 conditions per place. [2024-06-28 02:26:58,883 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 332 selfloop transitions, 42 changer transitions 0/376 dead transitions. [2024-06-28 02:26:58,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 376 transitions, 4036 flow [2024-06-28 02:26:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:58,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 02:26:58,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-28 02:26:58,884 INFO L175 Difference]: Start difference. First operand has 380 places, 356 transitions, 3214 flow. Second operand 11 states and 114 transitions. [2024-06-28 02:26:58,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 376 transitions, 4036 flow [2024-06-28 02:26:59,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 376 transitions, 3918 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:59,488 INFO L231 Difference]: Finished difference. Result has 382 places, 357 transitions, 3212 flow [2024-06-28 02:26:59,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3212, PETRI_PLACES=382, PETRI_TRANSITIONS=357} [2024-06-28 02:26:59,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-28 02:26:59,488 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 357 transitions, 3212 flow [2024-06-28 02:26:59,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:59,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:59,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:59,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 02:26:59,489 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:59,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2022109924, now seen corresponding path program 4 times [2024-06-28 02:26:59,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:59,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826899047] [2024-06-28 02:26:59,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:59,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:00,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:00,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826899047] [2024-06-28 02:27:00,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826899047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:00,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:00,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851767979] [2024-06-28 02:27:00,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:00,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:00,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:00,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:00,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:00,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 357 transitions, 3212 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:00,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:00,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:00,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:01,587 INFO L124 PetriNetUnfolderBase]: 1069/1911 cut-off events. [2024-06-28 02:27:01,587 INFO L125 PetriNetUnfolderBase]: For 125850/125850 co-relation queries the response was YES. [2024-06-28 02:27:01,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9616 conditions, 1911 events. 1069/1911 cut-off events. For 125850/125850 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11316 event pairs, 214 based on Foata normal form. 2/1912 useless extension candidates. Maximal degree in co-relation 9442. Up to 1754 conditions per place. [2024-06-28 02:27:01,612 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 338 selfloop transitions, 37 changer transitions 0/377 dead transitions. [2024-06-28 02:27:01,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 377 transitions, 4036 flow [2024-06-28 02:27:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 02:27:01,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-28 02:27:01,613 INFO L175 Difference]: Start difference. First operand has 382 places, 357 transitions, 3212 flow. Second operand 11 states and 113 transitions. [2024-06-28 02:27:01,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 377 transitions, 4036 flow [2024-06-28 02:27:02,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 377 transitions, 3930 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:02,197 INFO L231 Difference]: Finished difference. Result has 384 places, 358 transitions, 3214 flow [2024-06-28 02:27:02,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3214, PETRI_PLACES=384, PETRI_TRANSITIONS=358} [2024-06-28 02:27:02,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-28 02:27:02,198 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 358 transitions, 3214 flow [2024-06-28 02:27:02,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:02,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:02,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:02,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 02:27:02,198 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:02,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash 388039584, now seen corresponding path program 5 times [2024-06-28 02:27:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:02,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222251959] [2024-06-28 02:27:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:02,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:03,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:03,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222251959] [2024-06-28 02:27:03,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222251959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:03,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:03,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:03,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49708253] [2024-06-28 02:27:03,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:03,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:03,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:03,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:03,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:03,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 358 transitions, 3214 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:03,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:03,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:03,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:04,635 INFO L124 PetriNetUnfolderBase]: 1073/1919 cut-off events. [2024-06-28 02:27:04,635 INFO L125 PetriNetUnfolderBase]: For 126347/126347 co-relation queries the response was YES. [2024-06-28 02:27:04,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9660 conditions, 1919 events. 1073/1919 cut-off events. For 126347/126347 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11340 event pairs, 181 based on Foata normal form. 2/1920 useless extension candidates. Maximal degree in co-relation 9485. Up to 1657 conditions per place. [2024-06-28 02:27:04,656 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 330 selfloop transitions, 48 changer transitions 0/380 dead transitions. [2024-06-28 02:27:04,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 380 transitions, 4050 flow [2024-06-28 02:27:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-28 02:27:04,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-28 02:27:04,658 INFO L175 Difference]: Start difference. First operand has 384 places, 358 transitions, 3214 flow. Second operand 12 states and 121 transitions. [2024-06-28 02:27:04,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 380 transitions, 4050 flow [2024-06-28 02:27:05,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 380 transitions, 3952 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:05,325 INFO L231 Difference]: Finished difference. Result has 387 places, 359 transitions, 3248 flow [2024-06-28 02:27:05,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3248, PETRI_PLACES=387, PETRI_TRANSITIONS=359} [2024-06-28 02:27:05,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-28 02:27:05,325 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 359 transitions, 3248 flow [2024-06-28 02:27:05,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:05,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:05,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:05,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 02:27:05,326 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:05,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:05,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2047694081, now seen corresponding path program 1 times [2024-06-28 02:27:05,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:05,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263605803] [2024-06-28 02:27:05,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:05,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:07,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:07,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263605803] [2024-06-28 02:27:07,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263605803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:07,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:07,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:07,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607253987] [2024-06-28 02:27:07,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:07,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:07,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:07,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:07,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:07,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:07,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 359 transitions, 3248 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:07,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:07,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:07,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:07,749 INFO L124 PetriNetUnfolderBase]: 1071/1916 cut-off events. [2024-06-28 02:27:07,749 INFO L125 PetriNetUnfolderBase]: For 112808/112808 co-relation queries the response was YES. [2024-06-28 02:27:07,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9521 conditions, 1916 events. 1071/1916 cut-off events. For 112808/112808 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11362 event pairs, 221 based on Foata normal form. 1/1916 useless extension candidates. Maximal degree in co-relation 9345. Up to 1726 conditions per place. [2024-06-28 02:27:07,773 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 317 selfloop transitions, 59 changer transitions 0/378 dead transitions. [2024-06-28 02:27:07,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 378 transitions, 4054 flow [2024-06-28 02:27:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:27:07,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-28 02:27:07,774 INFO L175 Difference]: Start difference. First operand has 387 places, 359 transitions, 3248 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:27:07,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 378 transitions, 4054 flow [2024-06-28 02:27:08,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 378 transitions, 3914 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:08,435 INFO L231 Difference]: Finished difference. Result has 388 places, 359 transitions, 3236 flow [2024-06-28 02:27:08,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3108, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3236, PETRI_PLACES=388, PETRI_TRANSITIONS=359} [2024-06-28 02:27:08,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-28 02:27:08,436 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 359 transitions, 3236 flow [2024-06-28 02:27:08,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:08,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:08,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:08,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 02:27:08,437 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:08,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:08,437 INFO L85 PathProgramCache]: Analyzing trace with hash -251786050, now seen corresponding path program 1 times [2024-06-28 02:27:08,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:08,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762685219] [2024-06-28 02:27:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:08,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:10,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:10,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762685219] [2024-06-28 02:27:10,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762685219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:10,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:10,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:10,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126555230] [2024-06-28 02:27:10,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:10,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:10,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:10,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:10,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:10,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 359 transitions, 3236 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:10,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:10,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:10,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:11,234 INFO L124 PetriNetUnfolderBase]: 1091/1960 cut-off events. [2024-06-28 02:27:11,235 INFO L125 PetriNetUnfolderBase]: For 191821/191821 co-relation queries the response was YES. [2024-06-28 02:27:11,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9620 conditions, 1960 events. 1091/1960 cut-off events. For 191821/191821 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11661 event pairs, 225 based on Foata normal form. 10/1969 useless extension candidates. Maximal degree in co-relation 9443. Up to 1754 conditions per place. [2024-06-28 02:27:11,258 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 336 selfloop transitions, 37 changer transitions 8/383 dead transitions. [2024-06-28 02:27:11,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 383 transitions, 4088 flow [2024-06-28 02:27:11,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:27:11,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:27:11,260 INFO L175 Difference]: Start difference. First operand has 388 places, 359 transitions, 3236 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:27:11,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 383 transitions, 4088 flow [2024-06-28 02:27:11,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 383 transitions, 3874 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-28 02:27:11,986 INFO L231 Difference]: Finished difference. Result has 388 places, 356 transitions, 3073 flow [2024-06-28 02:27:11,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3073, PETRI_PLACES=388, PETRI_TRANSITIONS=356} [2024-06-28 02:27:11,986 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-28 02:27:11,987 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 356 transitions, 3073 flow [2024-06-28 02:27:11,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:11,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:11,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:11,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 02:27:11,987 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:11,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:11,988 INFO L85 PathProgramCache]: Analyzing trace with hash -978294146, now seen corresponding path program 6 times [2024-06-28 02:27:11,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:11,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409297488] [2024-06-28 02:27:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:11,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:13,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:13,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409297488] [2024-06-28 02:27:13,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409297488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:13,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:13,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:13,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525554121] [2024-06-28 02:27:13,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:13,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:13,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:13,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:13,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:13,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:13,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 356 transitions, 3073 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:13,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:13,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:13,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:14,243 INFO L124 PetriNetUnfolderBase]: 1065/1914 cut-off events. [2024-06-28 02:27:14,244 INFO L125 PetriNetUnfolderBase]: For 126564/126564 co-relation queries the response was YES. [2024-06-28 02:27:14,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9328 conditions, 1914 events. 1065/1914 cut-off events. For 126564/126564 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11401 event pairs, 168 based on Foata normal form. 2/1915 useless extension candidates. Maximal degree in co-relation 9151. Up to 1484 conditions per place. [2024-06-28 02:27:14,278 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 261 selfloop transitions, 116 changer transitions 0/379 dead transitions. [2024-06-28 02:27:14,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 379 transitions, 3931 flow [2024-06-28 02:27:14,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:14,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 02:27:14,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-28 02:27:14,292 INFO L175 Difference]: Start difference. First operand has 388 places, 356 transitions, 3073 flow. Second operand 11 states and 125 transitions. [2024-06-28 02:27:14,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 379 transitions, 3931 flow [2024-06-28 02:27:14,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 379 transitions, 3850 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:14,892 INFO L231 Difference]: Finished difference. Result has 389 places, 357 transitions, 3263 flow [2024-06-28 02:27:14,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2992, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3263, PETRI_PLACES=389, PETRI_TRANSITIONS=357} [2024-06-28 02:27:14,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-28 02:27:14,893 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 357 transitions, 3263 flow [2024-06-28 02:27:14,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:14,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:14,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:14,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 02:27:14,893 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:14,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:14,894 INFO L85 PathProgramCache]: Analyzing trace with hash -442796938, now seen corresponding path program 2 times [2024-06-28 02:27:14,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:14,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025369992] [2024-06-28 02:27:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:14,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:17,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:17,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025369992] [2024-06-28 02:27:17,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025369992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:17,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:17,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:17,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272920363] [2024-06-28 02:27:17,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:17,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:17,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:17,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:17,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:17,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:17,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 357 transitions, 3263 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:17,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:17,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:17,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:18,380 INFO L124 PetriNetUnfolderBase]: 1081/1950 cut-off events. [2024-06-28 02:27:18,380 INFO L125 PetriNetUnfolderBase]: For 196013/196013 co-relation queries the response was YES. [2024-06-28 02:27:18,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9661 conditions, 1950 events. 1081/1950 cut-off events. For 196013/196013 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 11645 event pairs, 174 based on Foata normal form. 10/1959 useless extension candidates. Maximal degree in co-relation 9483. Up to 1394 conditions per place. [2024-06-28 02:27:18,404 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 248 selfloop transitions, 124 changer transitions 14/388 dead transitions. [2024-06-28 02:27:18,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 388 transitions, 4159 flow [2024-06-28 02:27:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:27:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:27:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-28 02:27:18,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581730769230769 [2024-06-28 02:27:18,405 INFO L175 Difference]: Start difference. First operand has 389 places, 357 transitions, 3263 flow. Second operand 13 states and 149 transitions. [2024-06-28 02:27:18,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 388 transitions, 4159 flow [2024-06-28 02:27:19,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 388 transitions, 3894 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:19,079 INFO L231 Difference]: Finished difference. Result has 392 places, 349 transitions, 3197 flow [2024-06-28 02:27:19,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2998, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3197, PETRI_PLACES=392, PETRI_TRANSITIONS=349} [2024-06-28 02:27:19,080 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-28 02:27:19,080 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 349 transitions, 3197 flow [2024-06-28 02:27:19,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:19,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:19,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:19,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 02:27:19,081 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:19,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:19,081 INFO L85 PathProgramCache]: Analyzing trace with hash -526739476, now seen corresponding path program 3 times [2024-06-28 02:27:19,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:19,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518217168] [2024-06-28 02:27:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:19,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:21,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:21,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518217168] [2024-06-28 02:27:21,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518217168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:21,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:21,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:21,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534712507] [2024-06-28 02:27:21,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:21,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:21,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:21,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:21,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:21,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 349 transitions, 3197 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:21,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:21,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:21,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:22,407 INFO L124 PetriNetUnfolderBase]: 1089/1982 cut-off events. [2024-06-28 02:27:22,408 INFO L125 PetriNetUnfolderBase]: For 284322/284322 co-relation queries the response was YES. [2024-06-28 02:27:22,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11385 conditions, 1982 events. 1089/1982 cut-off events. For 284322/284322 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11841 event pairs, 188 based on Foata normal form. 8/1989 useless extension candidates. Maximal degree in co-relation 11207. Up to 1302 conditions per place. [2024-06-28 02:27:22,431 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 113 changer transitions 15/384 dead transitions. [2024-06-28 02:27:22,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 384 transitions, 4413 flow [2024-06-28 02:27:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:22,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 02:27:22,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-28 02:27:22,432 INFO L175 Difference]: Start difference. First operand has 392 places, 349 transitions, 3197 flow. Second operand 12 states and 143 transitions. [2024-06-28 02:27:22,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 384 transitions, 4413 flow [2024-06-28 02:27:23,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 384 transitions, 4088 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-06-28 02:27:23,398 INFO L231 Difference]: Finished difference. Result has 387 places, 341 transitions, 3032 flow [2024-06-28 02:27:23,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2876, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3032, PETRI_PLACES=387, PETRI_TRANSITIONS=341} [2024-06-28 02:27:23,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-28 02:27:23,399 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 341 transitions, 3032 flow [2024-06-28 02:27:23,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:23,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:23,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:23,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 02:27:23,399 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:23,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:23,399 INFO L85 PathProgramCache]: Analyzing trace with hash -985645796, now seen corresponding path program 7 times [2024-06-28 02:27:23,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:23,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023381570] [2024-06-28 02:27:23,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:23,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:24,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:24,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023381570] [2024-06-28 02:27:24,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023381570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:24,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:24,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:24,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367063779] [2024-06-28 02:27:24,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:24,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:24,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:24,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:24,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:25,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:25,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 341 transitions, 3032 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:25,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:25,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:25,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:25,726 INFO L124 PetriNetUnfolderBase]: 1052/1915 cut-off events. [2024-06-28 02:27:25,727 INFO L125 PetriNetUnfolderBase]: For 230128/230128 co-relation queries the response was YES. [2024-06-28 02:27:25,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10964 conditions, 1915 events. 1052/1915 cut-off events. For 230128/230128 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11412 event pairs, 188 based on Foata normal form. 2/1916 useless extension candidates. Maximal degree in co-relation 10802. Up to 1577 conditions per place. [2024-06-28 02:27:25,750 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 269 selfloop transitions, 92 changer transitions 0/363 dead transitions. [2024-06-28 02:27:25,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 363 transitions, 3854 flow [2024-06-28 02:27:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:25,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:27:25,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-28 02:27:25,752 INFO L175 Difference]: Start difference. First operand has 387 places, 341 transitions, 3032 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:27:25,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 363 transitions, 3854 flow [2024-06-28 02:27:26,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 363 transitions, 3642 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:27:26,576 INFO L231 Difference]: Finished difference. Result has 381 places, 342 transitions, 3045 flow [2024-06-28 02:27:26,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3045, PETRI_PLACES=381, PETRI_TRANSITIONS=342} [2024-06-28 02:27:26,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-28 02:27:26,577 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 342 transitions, 3045 flow [2024-06-28 02:27:26,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:26,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:26,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:26,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 02:27:26,577 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:26,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:26,578 INFO L85 PathProgramCache]: Analyzing trace with hash -450421574, now seen corresponding path program 8 times [2024-06-28 02:27:26,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210219415] [2024-06-28 02:27:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:26,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:28,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:28,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210219415] [2024-06-28 02:27:28,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210219415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:28,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:28,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254550164] [2024-06-28 02:27:28,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:28,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:28,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:28,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:28,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 342 transitions, 3045 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:28,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:28,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:28,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:28,915 INFO L124 PetriNetUnfolderBase]: 1056/1923 cut-off events. [2024-06-28 02:27:28,915 INFO L125 PetriNetUnfolderBase]: For 223968/223968 co-relation queries the response was YES. [2024-06-28 02:27:28,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11010 conditions, 1923 events. 1056/1923 cut-off events. For 223968/223968 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11456 event pairs, 190 based on Foata normal form. 2/1924 useless extension candidates. Maximal degree in co-relation 10850. Up to 1593 conditions per place. [2024-06-28 02:27:28,938 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 89 changer transitions 0/364 dead transitions. [2024-06-28 02:27:28,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 364 transitions, 3869 flow [2024-06-28 02:27:28,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:27:28,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:27:28,940 INFO L175 Difference]: Start difference. First operand has 381 places, 342 transitions, 3045 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:27:28,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 364 transitions, 3869 flow [2024-06-28 02:27:29,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 364 transitions, 3656 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:29,762 INFO L231 Difference]: Finished difference. Result has 383 places, 343 transitions, 3052 flow [2024-06-28 02:27:29,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3052, PETRI_PLACES=383, PETRI_TRANSITIONS=343} [2024-06-28 02:27:29,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-28 02:27:29,763 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 343 transitions, 3052 flow [2024-06-28 02:27:29,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:29,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:29,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:29,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 02:27:29,763 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:29,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1646525818, now seen corresponding path program 9 times [2024-06-28 02:27:29,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:29,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159330295] [2024-06-28 02:27:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:29,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:31,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159330295] [2024-06-28 02:27:31,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159330295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:31,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:31,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:31,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954778439] [2024-06-28 02:27:31,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:31,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:31,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:31,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:31,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:31,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:31,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 343 transitions, 3052 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:31,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:31,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:31,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:31,929 INFO L124 PetriNetUnfolderBase]: 1060/1931 cut-off events. [2024-06-28 02:27:31,929 INFO L125 PetriNetUnfolderBase]: For 227687/227687 co-relation queries the response was YES. [2024-06-28 02:27:31,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11071 conditions, 1931 events. 1060/1931 cut-off events. For 227687/227687 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11505 event pairs, 214 based on Foata normal form. 2/1932 useless extension candidates. Maximal degree in co-relation 10910. Up to 1731 conditions per place. [2024-06-28 02:27:31,949 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 305 selfloop transitions, 55 changer transitions 0/362 dead transitions. [2024-06-28 02:27:31,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 362 transitions, 3860 flow [2024-06-28 02:27:31,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:27:31,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-28 02:27:31,950 INFO L175 Difference]: Start difference. First operand has 383 places, 343 transitions, 3052 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:27:31,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 362 transitions, 3860 flow [2024-06-28 02:27:32,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 362 transitions, 3650 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:32,837 INFO L231 Difference]: Finished difference. Result has 385 places, 344 transitions, 2997 flow [2024-06-28 02:27:32,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2997, PETRI_PLACES=385, PETRI_TRANSITIONS=344} [2024-06-28 02:27:32,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-28 02:27:32,838 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 344 transitions, 2997 flow [2024-06-28 02:27:32,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:32,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:32,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:32,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 02:27:32,839 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:32,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:32,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1730483236, now seen corresponding path program 10 times [2024-06-28 02:27:32,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:32,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483528595] [2024-06-28 02:27:32,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:32,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:34,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:34,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483528595] [2024-06-28 02:27:34,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483528595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:34,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:34,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:34,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232672893] [2024-06-28 02:27:34,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:34,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:34,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:34,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:34,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 344 transitions, 2997 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:34,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:34,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:34,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:35,415 INFO L124 PetriNetUnfolderBase]: 1064/1939 cut-off events. [2024-06-28 02:27:35,416 INFO L125 PetriNetUnfolderBase]: For 231184/231184 co-relation queries the response was YES. [2024-06-28 02:27:35,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11044 conditions, 1939 events. 1064/1939 cut-off events. For 231184/231184 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11590 event pairs, 214 based on Foata normal form. 2/1940 useless extension candidates. Maximal degree in co-relation 10882. Up to 1747 conditions per place. [2024-06-28 02:27:35,440 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 309 selfloop transitions, 52 changer transitions 0/363 dead transitions. [2024-06-28 02:27:35,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 363 transitions, 3807 flow [2024-06-28 02:27:35,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:27:35,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-28 02:27:35,441 INFO L175 Difference]: Start difference. First operand has 385 places, 344 transitions, 2997 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:27:35,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 363 transitions, 3807 flow [2024-06-28 02:27:36,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 363 transitions, 3664 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:36,360 INFO L231 Difference]: Finished difference. Result has 387 places, 345 transitions, 3004 flow [2024-06-28 02:27:36,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3004, PETRI_PLACES=387, PETRI_TRANSITIONS=345} [2024-06-28 02:27:36,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-28 02:27:36,360 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 345 transitions, 3004 flow [2024-06-28 02:27:36,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:36,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:36,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:36,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 02:27:36,361 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:36,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:36,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1069387888, now seen corresponding path program 4 times [2024-06-28 02:27:36,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:36,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035689634] [2024-06-28 02:27:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:36,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:37,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035689634] [2024-06-28 02:27:37,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035689634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:37,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:37,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:37,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200424731] [2024-06-28 02:27:37,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:37,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:37,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:37,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:37,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:37,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:37,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 345 transitions, 3004 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:37,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:37,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:37,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:38,635 INFO L124 PetriNetUnfolderBase]: 1080/1975 cut-off events. [2024-06-28 02:27:38,635 INFO L125 PetriNetUnfolderBase]: For 303145/303145 co-relation queries the response was YES. [2024-06-28 02:27:38,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11133 conditions, 1975 events. 1080/1975 cut-off events. For 303145/303145 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11834 event pairs, 196 based on Foata normal form. 10/1984 useless extension candidates. Maximal degree in co-relation 10970. Up to 1487 conditions per place. [2024-06-28 02:27:38,660 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 258 selfloop transitions, 93 changer transitions 19/372 dead transitions. [2024-06-28 02:27:38,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 372 transitions, 3850 flow [2024-06-28 02:27:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 02:27:38,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-28 02:27:38,661 INFO L175 Difference]: Start difference. First operand has 387 places, 345 transitions, 3004 flow. Second operand 12 states and 137 transitions. [2024-06-28 02:27:38,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 372 transitions, 3850 flow [2024-06-28 02:27:39,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 372 transitions, 3710 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:39,520 INFO L231 Difference]: Finished difference. Result has 390 places, 336 transitions, 2990 flow [2024-06-28 02:27:39,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2864, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2990, PETRI_PLACES=390, PETRI_TRANSITIONS=336} [2024-06-28 02:27:39,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-28 02:27:39,521 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 336 transitions, 2990 flow [2024-06-28 02:27:39,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:39,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:39,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:39,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 02:27:39,521 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:39,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:39,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2113061946, now seen corresponding path program 11 times [2024-06-28 02:27:39,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:39,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220164072] [2024-06-28 02:27:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:39,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:40,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:40,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220164072] [2024-06-28 02:27:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220164072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:40,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:40,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950225355] [2024-06-28 02:27:40,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:40,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:40,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:40,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:40,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:40,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 336 transitions, 2990 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:40,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:40,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:40,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:41,538 INFO L124 PetriNetUnfolderBase]: 1038/1901 cut-off events. [2024-06-28 02:27:41,538 INFO L125 PetriNetUnfolderBase]: For 237896/237896 co-relation queries the response was YES. [2024-06-28 02:27:41,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10978 conditions, 1901 events. 1038/1901 cut-off events. For 237896/237896 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11366 event pairs, 206 based on Foata normal form. 2/1902 useless extension candidates. Maximal degree in co-relation 10814. Up to 1717 conditions per place. [2024-06-28 02:27:41,562 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 304 selfloop transitions, 49 changer transitions 0/355 dead transitions. [2024-06-28 02:27:41,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 355 transitions, 3784 flow [2024-06-28 02:27:41,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:27:41,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-28 02:27:41,564 INFO L175 Difference]: Start difference. First operand has 390 places, 336 transitions, 2990 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:27:41,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 355 transitions, 3784 flow [2024-06-28 02:27:42,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 355 transitions, 3586 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:27:42,374 INFO L231 Difference]: Finished difference. Result has 383 places, 337 transitions, 2938 flow [2024-06-28 02:27:42,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2938, PETRI_PLACES=383, PETRI_TRANSITIONS=337} [2024-06-28 02:27:42,374 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-28 02:27:42,374 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 337 transitions, 2938 flow [2024-06-28 02:27:42,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:42,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:42,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:42,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 02:27:42,375 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:42,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:42,375 INFO L85 PathProgramCache]: Analyzing trace with hash -649717784, now seen corresponding path program 12 times [2024-06-28 02:27:42,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:42,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067305706] [2024-06-28 02:27:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:42,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:43,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:43,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067305706] [2024-06-28 02:27:43,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067305706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:43,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:43,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623868863] [2024-06-28 02:27:43,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:43,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:43,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:43,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:44,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:44,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 337 transitions, 2938 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:44,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:44,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:44,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:44,707 INFO L124 PetriNetUnfolderBase]: 1035/1896 cut-off events. [2024-06-28 02:27:44,714 INFO L125 PetriNetUnfolderBase]: For 210212/210212 co-relation queries the response was YES. [2024-06-28 02:27:44,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 1896 events. 1035/1896 cut-off events. For 210212/210212 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11334 event pairs, 193 based on Foata normal form. 2/1897 useless extension candidates. Maximal degree in co-relation 10326. Up to 1634 conditions per place. [2024-06-28 02:27:44,737 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 282 selfloop transitions, 74 changer transitions 0/358 dead transitions. [2024-06-28 02:27:44,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 358 transitions, 3752 flow [2024-06-28 02:27:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:44,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:27:44,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:27:44,738 INFO L175 Difference]: Start difference. First operand has 383 places, 337 transitions, 2938 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:27:44,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 358 transitions, 3752 flow [2024-06-28 02:27:45,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 358 transitions, 3618 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:45,469 INFO L231 Difference]: Finished difference. Result has 385 places, 338 transitions, 3001 flow [2024-06-28 02:27:45,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3001, PETRI_PLACES=385, PETRI_TRANSITIONS=338} [2024-06-28 02:27:45,470 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-28 02:27:45,470 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 338 transitions, 3001 flow [2024-06-28 02:27:45,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:45,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:45,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:45,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 02:27:45,470 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:45,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:45,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1268905004, now seen corresponding path program 13 times [2024-06-28 02:27:45,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:45,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824367853] [2024-06-28 02:27:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:45,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:46,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:46,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824367853] [2024-06-28 02:27:46,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824367853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:46,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:46,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:46,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886109614] [2024-06-28 02:27:46,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:46,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:46,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:46,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:46,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 338 transitions, 3001 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:46,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:46,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:46,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:47,665 INFO L124 PetriNetUnfolderBase]: 1039/1904 cut-off events. [2024-06-28 02:27:47,665 INFO L125 PetriNetUnfolderBase]: For 213570/213570 co-relation queries the response was YES. [2024-06-28 02:27:47,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10612 conditions, 1904 events. 1039/1904 cut-off events. For 213570/213570 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11409 event pairs, 193 based on Foata normal form. 2/1905 useless extension candidates. Maximal degree in co-relation 10450. Up to 1626 conditions per place. [2024-06-28 02:27:47,689 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 283 selfloop transitions, 74 changer transitions 0/359 dead transitions. [2024-06-28 02:27:47,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 359 transitions, 3817 flow [2024-06-28 02:27:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:27:47,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:27:47,690 INFO L175 Difference]: Start difference. First operand has 385 places, 338 transitions, 3001 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:27:47,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 359 transitions, 3817 flow [2024-06-28 02:27:48,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 359 transitions, 3632 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:48,585 INFO L231 Difference]: Finished difference. Result has 387 places, 339 transitions, 3014 flow [2024-06-28 02:27:48,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3014, PETRI_PLACES=387, PETRI_TRANSITIONS=339} [2024-06-28 02:27:48,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-28 02:27:48,586 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 339 transitions, 3014 flow [2024-06-28 02:27:48,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:48,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:48,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:48,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 02:27:48,587 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:48,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash 305541678, now seen corresponding path program 5 times [2024-06-28 02:27:48,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:48,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130882581] [2024-06-28 02:27:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:48,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:50,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:50,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130882581] [2024-06-28 02:27:50,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130882581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:50,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:50,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:50,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101023441] [2024-06-28 02:27:50,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:50,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:50,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:50,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:50,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:50,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:50,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 339 transitions, 3014 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:50,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:50,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:50,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:51,554 INFO L124 PetriNetUnfolderBase]: 1061/1950 cut-off events. [2024-06-28 02:27:51,554 INFO L125 PetriNetUnfolderBase]: For 285264/285264 co-relation queries the response was YES. [2024-06-28 02:27:51,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10733 conditions, 1950 events. 1061/1950 cut-off events. For 285264/285264 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11745 event pairs, 215 based on Foata normal form. 10/1959 useless extension candidates. Maximal degree in co-relation 10570. Up to 1704 conditions per place. [2024-06-28 02:27:51,573 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 306 selfloop transitions, 54 changer transitions 11/373 dead transitions. [2024-06-28 02:27:51,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 373 transitions, 3905 flow [2024-06-28 02:27:51,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:27:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:27:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-28 02:27:51,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-28 02:27:51,575 INFO L175 Difference]: Start difference. First operand has 387 places, 339 transitions, 3014 flow. Second operand 13 states and 145 transitions. [2024-06-28 02:27:51,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 373 transitions, 3905 flow [2024-06-28 02:27:52,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 373 transitions, 3717 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:52,310 INFO L231 Difference]: Finished difference. Result has 392 places, 338 transitions, 2933 flow [2024-06-28 02:27:52,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2826, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2933, PETRI_PLACES=392, PETRI_TRANSITIONS=338} [2024-06-28 02:27:52,311 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-28 02:27:52,311 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 338 transitions, 2933 flow [2024-06-28 02:27:52,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:52,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:52,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:52,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 02:27:52,311 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:52,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash -552738206, now seen corresponding path program 6 times [2024-06-28 02:27:52,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:52,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264420883] [2024-06-28 02:27:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:52,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:54,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:54,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264420883] [2024-06-28 02:27:54,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264420883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:54,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:54,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:54,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199209291] [2024-06-28 02:27:54,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:54,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:54,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:54,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:54,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:54,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:54,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 338 transitions, 2933 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:54,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:54,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:54,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:54,853 INFO L124 PetriNetUnfolderBase]: 1051/1936 cut-off events. [2024-06-28 02:27:54,853 INFO L125 PetriNetUnfolderBase]: For 288358/288358 co-relation queries the response was YES. [2024-06-28 02:27:54,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10566 conditions, 1936 events. 1051/1936 cut-off events. For 288358/288358 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11651 event pairs, 217 based on Foata normal form. 10/1945 useless extension candidates. Maximal degree in co-relation 10401. Up to 1678 conditions per place. [2024-06-28 02:27:54,877 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 48 changer transitions 19/362 dead transitions. [2024-06-28 02:27:54,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 362 transitions, 3743 flow [2024-06-28 02:27:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:27:54,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:27:54,879 INFO L175 Difference]: Start difference. First operand has 392 places, 338 transitions, 2933 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:27:54,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 362 transitions, 3743 flow [2024-06-28 02:27:55,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 362 transitions, 3634 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:55,747 INFO L231 Difference]: Finished difference. Result has 392 places, 329 transitions, 2860 flow [2024-06-28 02:27:55,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2824, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2860, PETRI_PLACES=392, PETRI_TRANSITIONS=329} [2024-06-28 02:27:55,747 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-28 02:27:55,747 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 329 transitions, 2860 flow [2024-06-28 02:27:55,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:55,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:55,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:55,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 02:27:55,748 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:55,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:55,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2109487026, now seen corresponding path program 14 times [2024-06-28 02:27:55,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:55,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452436844] [2024-06-28 02:27:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:55,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:56,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:56,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452436844] [2024-06-28 02:27:56,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452436844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:56,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:56,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:56,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329232534] [2024-06-28 02:27:56,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:56,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:56,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:56,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:56,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:57,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:57,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 329 transitions, 2860 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:57,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:57,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:57,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:57,658 INFO L124 PetriNetUnfolderBase]: 1024/1895 cut-off events. [2024-06-28 02:27:57,658 INFO L125 PetriNetUnfolderBase]: For 267972/267972 co-relation queries the response was YES. [2024-06-28 02:27:57,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11242 conditions, 1895 events. 1024/1895 cut-off events. For 267972/267972 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11342 event pairs, 213 based on Foata normal form. 2/1896 useless extension candidates. Maximal degree in co-relation 11078. Up to 1682 conditions per place. [2024-06-28 02:27:57,682 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 303 selfloop transitions, 46 changer transitions 0/351 dead transitions. [2024-06-28 02:27:57,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 351 transitions, 3926 flow [2024-06-28 02:27:57,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:27:57,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-28 02:27:57,683 INFO L175 Difference]: Start difference. First operand has 392 places, 329 transitions, 2860 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:27:57,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 351 transitions, 3926 flow [2024-06-28 02:27:58,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 351 transitions, 3810 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-28 02:27:58,668 INFO L231 Difference]: Finished difference. Result has 385 places, 330 transitions, 2896 flow [2024-06-28 02:27:58,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2896, PETRI_PLACES=385, PETRI_TRANSITIONS=330} [2024-06-28 02:27:58,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-28 02:27:58,669 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 330 transitions, 2896 flow [2024-06-28 02:27:58,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:58,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:58,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:58,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 02:27:58,670 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:58,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:58,670 INFO L85 PathProgramCache]: Analyzing trace with hash -649867514, now seen corresponding path program 15 times [2024-06-28 02:27:58,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:58,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186319510] [2024-06-28 02:27:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:58,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:00,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:00,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186319510] [2024-06-28 02:28:00,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186319510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:00,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:00,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:00,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459161674] [2024-06-28 02:28:00,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:00,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:00,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:00,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:00,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:00,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:00,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 330 transitions, 2896 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:00,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:00,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:00,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:01,016 INFO L124 PetriNetUnfolderBase]: 1028/1903 cut-off events. [2024-06-28 02:28:01,016 INFO L125 PetriNetUnfolderBase]: For 257162/257162 co-relation queries the response was YES. [2024-06-28 02:28:01,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11259 conditions, 1903 events. 1028/1903 cut-off events. For 257162/257162 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 11407 event pairs, 206 based on Foata normal form. 2/1904 useless extension candidates. Maximal degree in co-relation 11098. Up to 1657 conditions per place. [2024-06-28 02:28:01,040 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 281 selfloop transitions, 68 changer transitions 0/351 dead transitions. [2024-06-28 02:28:01,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 351 transitions, 3696 flow [2024-06-28 02:28:01,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:01,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:01,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:28:01,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-28 02:28:01,041 INFO L175 Difference]: Start difference. First operand has 385 places, 330 transitions, 2896 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:28:01,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 351 transitions, 3696 flow [2024-06-28 02:28:02,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 351 transitions, 3564 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:02,218 INFO L231 Difference]: Finished difference. Result has 387 places, 331 transitions, 2952 flow [2024-06-28 02:28:02,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2952, PETRI_PLACES=387, PETRI_TRANSITIONS=331} [2024-06-28 02:28:02,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-28 02:28:02,218 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 331 transitions, 2952 flow [2024-06-28 02:28:02,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:02,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:02,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:02,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 02:28:02,219 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:02,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:02,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1587194362, now seen corresponding path program 16 times [2024-06-28 02:28:02,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:02,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766093881] [2024-06-28 02:28:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:02,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:03,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:03,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766093881] [2024-06-28 02:28:03,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766093881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:03,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:03,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:03,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020340773] [2024-06-28 02:28:03,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:03,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:03,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:03,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:03,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:03,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:03,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 331 transitions, 2952 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:03,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:03,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:03,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:04,525 INFO L124 PetriNetUnfolderBase]: 1017/1878 cut-off events. [2024-06-28 02:28:04,525 INFO L125 PetriNetUnfolderBase]: For 214421/214421 co-relation queries the response was YES. [2024-06-28 02:28:04,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10512 conditions, 1878 events. 1017/1878 cut-off events. For 214421/214421 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11288 event pairs, 230 based on Foata normal form. 2/1879 useless extension candidates. Maximal degree in co-relation 10350. Up to 1704 conditions per place. [2024-06-28 02:28:04,548 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 299 selfloop transitions, 48 changer transitions 0/349 dead transitions. [2024-06-28 02:28:04,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 349 transitions, 3742 flow [2024-06-28 02:28:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:04,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:28:04,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-28 02:28:04,550 INFO L175 Difference]: Start difference. First operand has 387 places, 331 transitions, 2952 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:28:04,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 349 transitions, 3742 flow [2024-06-28 02:28:05,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 349 transitions, 3564 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:05,546 INFO L231 Difference]: Finished difference. Result has 389 places, 332 transitions, 2924 flow [2024-06-28 02:28:05,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2924, PETRI_PLACES=389, PETRI_TRANSITIONS=332} [2024-06-28 02:28:05,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-28 02:28:05,561 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 332 transitions, 2924 flow [2024-06-28 02:28:05,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:05,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:05,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:05,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 02:28:05,561 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:05,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:05,561 INFO L85 PathProgramCache]: Analyzing trace with hash 845133840, now seen corresponding path program 17 times [2024-06-28 02:28:05,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:05,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899513012] [2024-06-28 02:28:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:05,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:06,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:06,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899513012] [2024-06-28 02:28:06,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899513012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:06,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:06,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:28:06,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079224095] [2024-06-28 02:28:06,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:06,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:28:06,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:28:06,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:28:06,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:06,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 332 transitions, 2924 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:06,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:06,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:06,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:07,612 INFO L124 PetriNetUnfolderBase]: 1021/1887 cut-off events. [2024-06-28 02:28:07,612 INFO L125 PetriNetUnfolderBase]: For 218048/218050 co-relation queries the response was YES. [2024-06-28 02:28:07,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10519 conditions, 1887 events. 1021/1887 cut-off events. For 218048/218050 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11357 event pairs, 212 based on Foata normal form. 2/1888 useless extension candidates. Maximal degree in co-relation 10356. Up to 1672 conditions per place. [2024-06-28 02:28:07,633 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 58 changer transitions 0/353 dead transitions. [2024-06-28 02:28:07,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 353 transitions, 3742 flow [2024-06-28 02:28:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:28:07,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:28:07,635 INFO L175 Difference]: Start difference. First operand has 389 places, 332 transitions, 2924 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:28:07,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 353 transitions, 3742 flow [2024-06-28 02:28:08,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 353 transitions, 3602 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:08,681 INFO L231 Difference]: Finished difference. Result has 391 places, 333 transitions, 2956 flow [2024-06-28 02:28:08,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2956, PETRI_PLACES=391, PETRI_TRANSITIONS=333} [2024-06-28 02:28:08,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-28 02:28:08,682 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 333 transitions, 2956 flow [2024-06-28 02:28:08,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:08,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:08,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:08,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 02:28:08,683 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:08,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash -103326530, now seen corresponding path program 18 times [2024-06-28 02:28:08,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:08,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213311105] [2024-06-28 02:28:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:08,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:10,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:10,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213311105] [2024-06-28 02:28:10,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213311105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:10,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:10,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:10,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042393337] [2024-06-28 02:28:10,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:10,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:10,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:10,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:10,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:10,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:10,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 333 transitions, 2956 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:10,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:10,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:10,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:10,838 INFO L124 PetriNetUnfolderBase]: 1025/1895 cut-off events. [2024-06-28 02:28:10,838 INFO L125 PetriNetUnfolderBase]: For 221430/221432 co-relation queries the response was YES. [2024-06-28 02:28:10,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10610 conditions, 1895 events. 1025/1895 cut-off events. For 221430/221432 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11416 event pairs, 148 based on Foata normal form. 2/1896 useless extension candidates. Maximal degree in co-relation 10446. Up to 1051 conditions per place. [2024-06-28 02:28:10,862 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 166 changer transitions 0/356 dead transitions. [2024-06-28 02:28:10,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 356 transitions, 3792 flow [2024-06-28 02:28:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:10,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:28:10,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-28 02:28:10,864 INFO L175 Difference]: Start difference. First operand has 391 places, 333 transitions, 2956 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:28:10,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 356 transitions, 3792 flow [2024-06-28 02:28:11,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 356 transitions, 3630 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:11,947 INFO L231 Difference]: Finished difference. Result has 393 places, 334 transitions, 3184 flow [2024-06-28 02:28:11,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3184, PETRI_PLACES=393, PETRI_TRANSITIONS=334} [2024-06-28 02:28:11,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-28 02:28:11,947 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 334 transitions, 3184 flow [2024-06-28 02:28:11,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:11,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:11,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:11,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 02:28:11,948 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:11,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1787244878, now seen corresponding path program 7 times [2024-06-28 02:28:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818019165] [2024-06-28 02:28:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:11,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818019165] [2024-06-28 02:28:13,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818019165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:13,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:13,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:13,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258051432] [2024-06-28 02:28:13,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:13,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:13,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:13,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:13,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 334 transitions, 3184 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:13,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:13,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:13,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:14,142 INFO L124 PetriNetUnfolderBase]: 1073/1995 cut-off events. [2024-06-28 02:28:14,142 INFO L125 PetriNetUnfolderBase]: For 385637/385639 co-relation queries the response was YES. [2024-06-28 02:28:14,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12935 conditions, 1995 events. 1073/1995 cut-off events. For 385637/385639 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 12029 event pairs, 160 based on Foata normal form. 8/2002 useless extension candidates. Maximal degree in co-relation 12770. Up to 1013 conditions per place. [2024-06-28 02:28:14,170 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 163 changer transitions 8/369 dead transitions. [2024-06-28 02:28:14,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 369 transitions, 4398 flow [2024-06-28 02:28:14,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:14,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 02:28:14,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 02:28:14,172 INFO L175 Difference]: Start difference. First operand has 393 places, 334 transitions, 3184 flow. Second operand 12 states and 150 transitions. [2024-06-28 02:28:14,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 369 transitions, 4398 flow [2024-06-28 02:28:15,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 369 transitions, 4018 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:15,655 INFO L231 Difference]: Finished difference. Result has 396 places, 332 transitions, 3121 flow [2024-06-28 02:28:15,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3121, PETRI_PLACES=396, PETRI_TRANSITIONS=332} [2024-06-28 02:28:15,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-28 02:28:15,656 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 332 transitions, 3121 flow [2024-06-28 02:28:15,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:15,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:15,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:15,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 02:28:15,656 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:15,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:15,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1340995402, now seen corresponding path program 19 times [2024-06-28 02:28:15,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:15,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949106418] [2024-06-28 02:28:15,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:15,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:17,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:17,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949106418] [2024-06-28 02:28:17,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949106418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:17,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:17,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:17,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148268247] [2024-06-28 02:28:17,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:17,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:17,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:17,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:17,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 332 transitions, 3121 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:17,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:17,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:17,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:18,057 INFO L124 PetriNetUnfolderBase]: 1053/1955 cut-off events. [2024-06-28 02:28:18,057 INFO L125 PetriNetUnfolderBase]: For 337834/337836 co-relation queries the response was YES. [2024-06-28 02:28:18,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12818 conditions, 1955 events. 1053/1955 cut-off events. For 337834/337836 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11802 event pairs, 232 based on Foata normal form. 2/1956 useless extension candidates. Maximal degree in co-relation 12652. Up to 1741 conditions per place. [2024-06-28 02:28:18,081 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 291 selfloop transitions, 59 changer transitions 0/352 dead transitions. [2024-06-28 02:28:18,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 352 transitions, 3933 flow [2024-06-28 02:28:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:28:18,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:28:18,082 INFO L175 Difference]: Start difference. First operand has 396 places, 332 transitions, 3121 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:28:18,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 352 transitions, 3933 flow [2024-06-28 02:28:19,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 352 transitions, 3609 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:19,700 INFO L231 Difference]: Finished difference. Result has 394 places, 333 transitions, 2976 flow [2024-06-28 02:28:19,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2976, PETRI_PLACES=394, PETRI_TRANSITIONS=333} [2024-06-28 02:28:19,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-28 02:28:19,716 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 333 transitions, 2976 flow [2024-06-28 02:28:19,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:19,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:19,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:19,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 02:28:19,717 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:19,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1521166478, now seen corresponding path program 8 times [2024-06-28 02:28:19,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:19,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133369269] [2024-06-28 02:28:19,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:19,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:21,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:21,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133369269] [2024-06-28 02:28:21,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133369269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:21,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:21,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:21,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66661363] [2024-06-28 02:28:21,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:21,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:21,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:21,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:21,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:21,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 333 transitions, 2976 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:21,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:21,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:21,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:22,277 INFO L124 PetriNetUnfolderBase]: 1094/2042 cut-off events. [2024-06-28 02:28:22,277 INFO L125 PetriNetUnfolderBase]: For 474842/474844 co-relation queries the response was YES. [2024-06-28 02:28:22,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14183 conditions, 2042 events. 1094/2042 cut-off events. For 474842/474844 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12388 event pairs, 237 based on Foata normal form. 8/2049 useless extension candidates. Maximal degree in co-relation 14018. Up to 1664 conditions per place. [2024-06-28 02:28:22,303 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 291 selfloop transitions, 64 changer transitions 8/365 dead transitions. [2024-06-28 02:28:22,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 365 transitions, 4118 flow [2024-06-28 02:28:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:22,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 02:28:22,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 02:28:22,305 INFO L175 Difference]: Start difference. First operand has 394 places, 333 transitions, 2976 flow. Second operand 12 states and 140 transitions. [2024-06-28 02:28:22,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 365 transitions, 4118 flow [2024-06-28 02:28:23,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 365 transitions, 3951 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:23,962 INFO L231 Difference]: Finished difference. Result has 397 places, 331 transitions, 2918 flow [2024-06-28 02:28:23,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2809, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2918, PETRI_PLACES=397, PETRI_TRANSITIONS=331} [2024-06-28 02:28:23,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-28 02:28:23,963 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 331 transitions, 2918 flow [2024-06-28 02:28:23,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:23,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:23,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:23,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 02:28:23,964 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:23,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:23,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1540297192, now seen corresponding path program 20 times [2024-06-28 02:28:23,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:23,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971626994] [2024-06-28 02:28:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:23,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:25,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971626994] [2024-06-28 02:28:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971626994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:25,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:25,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:25,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476036810] [2024-06-28 02:28:25,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:25,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:25,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:25,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:25,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:25,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:25,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 331 transitions, 2918 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:25,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:25,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:25,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:26,131 INFO L124 PetriNetUnfolderBase]: 1074/2002 cut-off events. [2024-06-28 02:28:26,131 INFO L125 PetriNetUnfolderBase]: For 428348/428350 co-relation queries the response was YES. [2024-06-28 02:28:26,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14086 conditions, 2002 events. 1074/2002 cut-off events. For 428348/428350 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 12101 event pairs, 233 based on Foata normal form. 2/2003 useless extension candidates. Maximal degree in co-relation 13920. Up to 1710 conditions per place. [2024-06-28 02:28:26,157 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 274 selfloop transitions, 76 changer transitions 0/352 dead transitions. [2024-06-28 02:28:26,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 352 transitions, 3738 flow [2024-06-28 02:28:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 02:28:26,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-28 02:28:26,158 INFO L175 Difference]: Start difference. First operand has 397 places, 331 transitions, 2918 flow. Second operand 11 states and 125 transitions. [2024-06-28 02:28:26,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 352 transitions, 3738 flow [2024-06-28 02:28:27,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 352 transitions, 3614 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:27,838 INFO L231 Difference]: Finished difference. Result has 395 places, 332 transitions, 3009 flow [2024-06-28 02:28:27,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3009, PETRI_PLACES=395, PETRI_TRANSITIONS=332} [2024-06-28 02:28:27,839 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-28 02:28:27,839 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 332 transitions, 3009 flow [2024-06-28 02:28:27,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:27,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:27,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:27,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 02:28:27,839 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:27,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:27,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2003332136, now seen corresponding path program 9 times [2024-06-28 02:28:27,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:27,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927383280] [2024-06-28 02:28:27,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:27,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:29,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:29,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927383280] [2024-06-28 02:28:29,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927383280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:29,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:29,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:29,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808509502] [2024-06-28 02:28:29,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:29,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:29,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:29,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:29,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:29,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 332 transitions, 3009 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:29,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:29,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:29,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:30,293 INFO L124 PetriNetUnfolderBase]: 1090/2038 cut-off events. [2024-06-28 02:28:30,293 INFO L125 PetriNetUnfolderBase]: For 502616/502618 co-relation queries the response was YES. [2024-06-28 02:28:30,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14273 conditions, 2038 events. 1090/2038 cut-off events. For 502616/502618 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 12350 event pairs, 181 based on Foata normal form. 10/2047 useless extension candidates. Maximal degree in co-relation 14108. Up to 1152 conditions per place. [2024-06-28 02:28:30,320 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 160 changer transitions 12/363 dead transitions. [2024-06-28 02:28:30,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 363 transitions, 3859 flow [2024-06-28 02:28:30,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:28:30,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:28:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-28 02:28:30,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37259615384615385 [2024-06-28 02:28:30,321 INFO L175 Difference]: Start difference. First operand has 395 places, 332 transitions, 3009 flow. Second operand 13 states and 155 transitions. [2024-06-28 02:28:30,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 363 transitions, 3859 flow [2024-06-28 02:28:32,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 363 transitions, 3656 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:32,201 INFO L231 Difference]: Finished difference. Result has 399 places, 327 transitions, 3100 flow [2024-06-28 02:28:32,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3100, PETRI_PLACES=399, PETRI_TRANSITIONS=327} [2024-06-28 02:28:32,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-28 02:28:32,202 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 327 transitions, 3100 flow [2024-06-28 02:28:32,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:32,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:32,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:32,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 02:28:32,203 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:32,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1540294070, now seen corresponding path program 21 times [2024-06-28 02:28:32,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:32,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439367201] [2024-06-28 02:28:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:32,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439367201] [2024-06-28 02:28:33,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439367201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:33,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:33,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:33,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552140942] [2024-06-28 02:28:33,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:33,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:33,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:33,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 327 transitions, 3100 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:33,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:33,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:33,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:34,182 INFO L124 PetriNetUnfolderBase]: 1055/1973 cut-off events. [2024-06-28 02:28:34,182 INFO L125 PetriNetUnfolderBase]: For 416458/416460 co-relation queries the response was YES. [2024-06-28 02:28:34,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13882 conditions, 1973 events. 1055/1973 cut-off events. For 416458/416460 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11890 event pairs, 176 based on Foata normal form. 2/1974 useless extension candidates. Maximal degree in co-relation 13716. Up to 1147 conditions per place. [2024-06-28 02:28:34,207 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 161 changer transitions 0/348 dead transitions. [2024-06-28 02:28:34,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 348 transitions, 3916 flow [2024-06-28 02:28:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 02:28:34,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-28 02:28:34,209 INFO L175 Difference]: Start difference. First operand has 399 places, 327 transitions, 3100 flow. Second operand 11 states and 129 transitions. [2024-06-28 02:28:34,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 348 transitions, 3916 flow [2024-06-28 02:28:36,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 348 transitions, 3588 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-28 02:28:36,222 INFO L231 Difference]: Finished difference. Result has 393 places, 328 transitions, 3158 flow [2024-06-28 02:28:36,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2772, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3158, PETRI_PLACES=393, PETRI_TRANSITIONS=328} [2024-06-28 02:28:36,222 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-28 02:28:36,222 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 328 transitions, 3158 flow [2024-06-28 02:28:36,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:36,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:36,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:36,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 02:28:36,223 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:36,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:36,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1340989822, now seen corresponding path program 22 times [2024-06-28 02:28:36,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:36,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051974976] [2024-06-28 02:28:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:36,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:38,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:38,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051974976] [2024-06-28 02:28:38,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051974976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:38,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:38,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:38,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361638954] [2024-06-28 02:28:38,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:38,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:38,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:38,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:38,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:38,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 328 transitions, 3158 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:38,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:38,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:38,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:38,925 INFO L124 PetriNetUnfolderBase]: 1059/1981 cut-off events. [2024-06-28 02:28:38,925 INFO L125 PetriNetUnfolderBase]: For 406531/406533 co-relation queries the response was YES. [2024-06-28 02:28:38,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13938 conditions, 1981 events. 1059/1981 cut-off events. For 406531/406533 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11978 event pairs, 242 based on Foata normal form. 2/1982 useless extension candidates. Maximal degree in co-relation 13774. Up to 1743 conditions per place. [2024-06-28 02:28:38,951 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 286 selfloop transitions, 60 changer transitions 0/348 dead transitions. [2024-06-28 02:28:38,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 348 transitions, 3966 flow [2024-06-28 02:28:38,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:28:38,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:28:38,952 INFO L175 Difference]: Start difference. First operand has 393 places, 328 transitions, 3158 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:28:38,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 348 transitions, 3966 flow [2024-06-28 02:28:40,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 348 transitions, 3590 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:40,913 INFO L231 Difference]: Finished difference. Result has 395 places, 329 transitions, 2969 flow [2024-06-28 02:28:40,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2969, PETRI_PLACES=395, PETRI_TRANSITIONS=329} [2024-06-28 02:28:40,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-28 02:28:40,914 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 329 transitions, 2969 flow [2024-06-28 02:28:40,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:40,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:40,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:40,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 02:28:40,914 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:40,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:40,915 INFO L85 PathProgramCache]: Analyzing trace with hash 344181788, now seen corresponding path program 23 times [2024-06-28 02:28:40,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:40,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514001333] [2024-06-28 02:28:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:40,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:42,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:42,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514001333] [2024-06-28 02:28:42,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514001333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:42,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:42,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:42,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29850212] [2024-06-28 02:28:42,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:42,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:42,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:42,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:42,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:42,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:42,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 329 transitions, 2969 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:42,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:42,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:42,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:43,416 INFO L124 PetriNetUnfolderBase]: 1063/1989 cut-off events. [2024-06-28 02:28:43,416 INFO L125 PetriNetUnfolderBase]: For 412318/412320 co-relation queries the response was YES. [2024-06-28 02:28:43,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13751 conditions, 1989 events. 1063/1989 cut-off events. For 412318/412320 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 12028 event pairs, 258 based on Foata normal form. 2/1990 useless extension candidates. Maximal degree in co-relation 13586. Up to 1814 conditions per place. [2024-06-28 02:28:43,439 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 298 selfloop transitions, 47 changer transitions 0/347 dead transitions. [2024-06-28 02:28:43,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 347 transitions, 3767 flow [2024-06-28 02:28:43,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:28:43,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-28 02:28:43,440 INFO L175 Difference]: Start difference. First operand has 395 places, 329 transitions, 2969 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:28:43,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 347 transitions, 3767 flow [2024-06-28 02:28:45,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 347 transitions, 3592 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:45,204 INFO L231 Difference]: Finished difference. Result has 397 places, 330 transitions, 2956 flow [2024-06-28 02:28:45,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2956, PETRI_PLACES=397, PETRI_TRANSITIONS=330} [2024-06-28 02:28:45,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-28 02:28:45,204 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 330 transitions, 2956 flow [2024-06-28 02:28:45,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:45,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:45,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:45,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 02:28:45,205 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:45,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:45,205 INFO L85 PathProgramCache]: Analyzing trace with hash -418649914, now seen corresponding path program 24 times [2024-06-28 02:28:45,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:45,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068528939] [2024-06-28 02:28:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:45,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:46,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068528939] [2024-06-28 02:28:46,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068528939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:46,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:46,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:46,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966395547] [2024-06-28 02:28:46,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:46,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:46,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:46,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:46,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:46,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:46,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 330 transitions, 2956 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:46,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:46,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:46,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:47,420 INFO L124 PetriNetUnfolderBase]: 1067/1997 cut-off events. [2024-06-28 02:28:47,420 INFO L125 PetriNetUnfolderBase]: For 418579/418581 co-relation queries the response was YES. [2024-06-28 02:28:47,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13798 conditions, 1997 events. 1067/1997 cut-off events. For 418579/418581 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 12094 event pairs, 258 based on Foata normal form. 2/1998 useless extension candidates. Maximal degree in co-relation 13632. Up to 1822 conditions per place. [2024-06-28 02:28:47,446 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 300 selfloop transitions, 46 changer transitions 0/348 dead transitions. [2024-06-28 02:28:47,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 348 transitions, 3756 flow [2024-06-28 02:28:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 02:28:47,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-28 02:28:47,447 INFO L175 Difference]: Start difference. First operand has 397 places, 330 transitions, 2956 flow. Second operand 11 states and 115 transitions. [2024-06-28 02:28:47,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 348 transitions, 3756 flow [2024-06-28 02:28:49,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 348 transitions, 3604 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:49,146 INFO L231 Difference]: Finished difference. Result has 399 places, 331 transitions, 2966 flow [2024-06-28 02:28:49,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2966, PETRI_PLACES=399, PETRI_TRANSITIONS=331} [2024-06-28 02:28:49,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-28 02:28:49,146 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 331 transitions, 2966 flow [2024-06-28 02:28:49,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:49,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:49,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:49,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 02:28:49,147 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:49,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:49,147 INFO L85 PathProgramCache]: Analyzing trace with hash 488287644, now seen corresponding path program 10 times [2024-06-28 02:28:49,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:49,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36194056] [2024-06-28 02:28:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:49,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:51,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:51,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36194056] [2024-06-28 02:28:51,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36194056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:51,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:51,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:51,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952024626] [2024-06-28 02:28:51,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:51,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:51,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:51,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:51,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:51,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:51,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 331 transitions, 2966 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:51,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:51,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:51,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:52,159 INFO L124 PetriNetUnfolderBase]: 1083/2033 cut-off events. [2024-06-28 02:28:52,159 INFO L125 PetriNetUnfolderBase]: For 497382/497384 co-relation queries the response was YES. [2024-06-28 02:28:52,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13857 conditions, 2033 events. 1083/2033 cut-off events. For 497382/497384 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 12393 event pairs, 272 based on Foata normal form. 10/2042 useless extension candidates. Maximal degree in co-relation 13690. Up to 1808 conditions per place. [2024-06-28 02:28:52,184 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 296 selfloop transitions, 47 changer transitions 9/354 dead transitions. [2024-06-28 02:28:52,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 354 transitions, 3758 flow [2024-06-28 02:28:52,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:52,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 02:28:52,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-28 02:28:52,186 INFO L175 Difference]: Start difference. First operand has 399 places, 331 transitions, 2966 flow. Second operand 12 states and 130 transitions. [2024-06-28 02:28:52,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 354 transitions, 3758 flow [2024-06-28 02:28:54,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 354 transitions, 3606 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:54,057 INFO L231 Difference]: Finished difference. Result has 402 places, 328 transitions, 2893 flow [2024-06-28 02:28:54,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2893, PETRI_PLACES=402, PETRI_TRANSITIONS=328} [2024-06-28 02:28:54,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 371 predicate places. [2024-06-28 02:28:54,058 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 328 transitions, 2893 flow [2024-06-28 02:28:54,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:54,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:54,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:54,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 02:28:54,059 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:54,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1054871766, now seen corresponding path program 11 times [2024-06-28 02:28:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:54,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036507710] [2024-06-28 02:28:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:54,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:55,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:55,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036507710] [2024-06-28 02:28:55,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036507710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:55,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:55,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:55,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233586213] [2024-06-28 02:28:55,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:55,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:55,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:55,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:55,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:55,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:55,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 328 transitions, 2893 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:55,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:55,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:55,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:56,542 INFO L124 PetriNetUnfolderBase]: 1081/2039 cut-off events. [2024-06-28 02:28:56,543 INFO L125 PetriNetUnfolderBase]: For 560776/560778 co-relation queries the response was YES. [2024-06-28 02:28:56,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13778 conditions, 2039 events. 1081/2039 cut-off events. For 560776/560778 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 12493 event pairs, 258 based on Foata normal form. 16/2054 useless extension candidates. Maximal degree in co-relation 13610. Up to 1714 conditions per place. [2024-06-28 02:28:56,569 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 276 selfloop transitions, 56 changer transitions 23/357 dead transitions. [2024-06-28 02:28:56,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 357 transitions, 3721 flow [2024-06-28 02:28:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:28:56,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:28:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-28 02:28:56,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-28 02:28:56,570 INFO L175 Difference]: Start difference. First operand has 402 places, 328 transitions, 2893 flow. Second operand 13 states and 146 transitions. [2024-06-28 02:28:56,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 357 transitions, 3721 flow [2024-06-28 02:28:58,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 357 transitions, 3621 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:28:58,440 INFO L231 Difference]: Finished difference. Result has 401 places, 317 transitions, 2802 flow [2024-06-28 02:28:58,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2802, PETRI_PLACES=401, PETRI_TRANSITIONS=317} [2024-06-28 02:28:58,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-28 02:28:58,440 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 317 transitions, 2802 flow [2024-06-28 02:28:58,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:58,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:58,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:58,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 02:28:58,441 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:58,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2010956772, now seen corresponding path program 25 times [2024-06-28 02:28:58,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:58,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664483201] [2024-06-28 02:28:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:58,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:59,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:59,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664483201] [2024-06-28 02:28:59,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664483201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:59,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:59,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:59,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681357845] [2024-06-28 02:28:59,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:59,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:59,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:59,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:59,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:59,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:59,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 317 transitions, 2802 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:59,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:59,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:59,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:00,695 INFO L124 PetriNetUnfolderBase]: 1063/2005 cut-off events. [2024-06-28 02:29:00,695 INFO L125 PetriNetUnfolderBase]: For 537629/537629 co-relation queries the response was YES. [2024-06-28 02:29:00,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15523 conditions, 2005 events. 1063/2005 cut-off events. For 537629/537629 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12199 event pairs, 194 based on Foata normal form. 2/2006 useless extension candidates. Maximal degree in co-relation 15356. Up to 1141 conditions per place. [2024-06-28 02:29:00,718 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 186 selfloop transitions, 158 changer transitions 0/346 dead transitions. [2024-06-28 02:29:00,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 346 transitions, 4009 flow [2024-06-28 02:29:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:29:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:29:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 02:29:00,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:29:00,719 INFO L175 Difference]: Start difference. First operand has 401 places, 317 transitions, 2802 flow. Second operand 12 states and 144 transitions. [2024-06-28 02:29:00,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 346 transitions, 4009 flow [2024-06-28 02:29:02,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 346 transitions, 3863 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-06-28 02:29:02,600 INFO L231 Difference]: Finished difference. Result has 392 places, 319 transitions, 3114 flow [2024-06-28 02:29:02,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2664, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3114, PETRI_PLACES=392, PETRI_TRANSITIONS=319} [2024-06-28 02:29:02,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-28 02:29:02,600 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 319 transitions, 3114 flow [2024-06-28 02:29:02,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:02,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:02,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:02,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 02:29:02,601 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:02,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1521538298, now seen corresponding path program 12 times [2024-06-28 02:29:02,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:02,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252499678] [2024-06-28 02:29:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:02,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:04,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:04,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252499678] [2024-06-28 02:29:04,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252499678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:04,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:04,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:04,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514650281] [2024-06-28 02:29:04,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:04,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:04,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:04,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:04,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:04,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:04,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 319 transitions, 3114 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:04,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:04,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:04,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:05,568 INFO L124 PetriNetUnfolderBase]: 1065/2015 cut-off events. [2024-06-28 02:29:05,569 INFO L125 PetriNetUnfolderBase]: For 565603/565605 co-relation queries the response was YES. [2024-06-28 02:29:05,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15161 conditions, 2015 events. 1065/2015 cut-off events. For 565603/565605 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12317 event pairs, 192 based on Foata normal form. 10/2024 useless extension candidates. Maximal degree in co-relation 14997. Up to 1197 conditions per place. [2024-06-28 02:29:05,595 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 155 changer transitions 11/349 dead transitions. [2024-06-28 02:29:05,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 349 transitions, 3924 flow [2024-06-28 02:29:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 02:29:05,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 02:29:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 158 transitions. [2024-06-28 02:29:05,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-28 02:29:05,596 INFO L175 Difference]: Start difference. First operand has 392 places, 319 transitions, 3114 flow. Second operand 14 states and 158 transitions. [2024-06-28 02:29:05,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 349 transitions, 3924 flow [2024-06-28 02:29:07,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 349 transitions, 3650 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 02:29:07,778 INFO L231 Difference]: Finished difference. Result has 398 places, 316 transitions, 3132 flow [2024-06-28 02:29:07,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3132, PETRI_PLACES=398, PETRI_TRANSITIONS=316} [2024-06-28 02:29:07,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-28 02:29:07,778 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 316 transitions, 3132 flow [2024-06-28 02:29:07,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:07,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:07,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:07,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 02:29:07,779 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:07,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:07,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1441462228, now seen corresponding path program 13 times [2024-06-28 02:29:07,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:07,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473745309] [2024-06-28 02:29:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:07,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:09,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:09,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473745309] [2024-06-28 02:29:09,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473745309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:09,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:09,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:09,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574167741] [2024-06-28 02:29:09,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:09,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:09,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:09,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:09,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 316 transitions, 3132 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:09,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:09,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:09,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:10,033 INFO L124 PetriNetUnfolderBase]: 1051/1992 cut-off events. [2024-06-28 02:29:10,033 INFO L125 PetriNetUnfolderBase]: For 552851/552851 co-relation queries the response was YES. [2024-06-28 02:29:10,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15238 conditions, 1992 events. 1051/1992 cut-off events. For 552851/552851 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12190 event pairs, 338 based on Foata normal form. 8/1999 useless extension candidates. Maximal degree in co-relation 15072. Up to 1799 conditions per place. [2024-06-28 02:29:10,060 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 309 selfloop transitions, 22 changer transitions 8/341 dead transitions. [2024-06-28 02:29:10,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 341 transitions, 4202 flow [2024-06-28 02:29:10,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:29:10,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:29:10,062 INFO L175 Difference]: Start difference. First operand has 398 places, 316 transitions, 3132 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:29:10,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 341 transitions, 4202 flow [2024-06-28 02:29:12,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 341 transitions, 3884 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 02:29:12,189 INFO L231 Difference]: Finished difference. Result has 393 places, 314 transitions, 2848 flow [2024-06-28 02:29:12,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2818, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2848, PETRI_PLACES=393, PETRI_TRANSITIONS=314} [2024-06-28 02:29:12,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-28 02:29:12,189 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 314 transitions, 2848 flow [2024-06-28 02:29:12,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:12,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:12,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:12,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 02:29:12,190 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:12,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:12,190 INFO L85 PathProgramCache]: Analyzing trace with hash 607513516, now seen corresponding path program 26 times [2024-06-28 02:29:12,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:12,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231214360] [2024-06-28 02:29:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:12,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:13,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:13,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231214360] [2024-06-28 02:29:13,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231214360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:13,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:13,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:13,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845350580] [2024-06-28 02:29:13,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:13,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:13,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:13,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:13,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:13,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:13,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 314 transitions, 2848 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:13,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:13,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:13,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:14,525 INFO L124 PetriNetUnfolderBase]: 1031/1952 cut-off events. [2024-06-28 02:29:14,525 INFO L125 PetriNetUnfolderBase]: For 492007/492007 co-relation queries the response was YES. [2024-06-28 02:29:14,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14809 conditions, 1952 events. 1031/1952 cut-off events. For 492007/492007 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11852 event pairs, 214 based on Foata normal form. 2/1953 useless extension candidates. Maximal degree in co-relation 14644. Up to 1628 conditions per place. [2024-06-28 02:29:14,552 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 249 selfloop transitions, 86 changer transitions 0/337 dead transitions. [2024-06-28 02:29:14,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 337 transitions, 3660 flow [2024-06-28 02:29:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:29:14,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-28 02:29:14,553 INFO L175 Difference]: Start difference. First operand has 393 places, 314 transitions, 2848 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:29:14,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 337 transitions, 3660 flow [2024-06-28 02:29:16,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 337 transitions, 3610 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:29:16,514 INFO L231 Difference]: Finished difference. Result has 391 places, 315 transitions, 3042 flow [2024-06-28 02:29:16,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3042, PETRI_PLACES=391, PETRI_TRANSITIONS=315} [2024-06-28 02:29:16,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-28 02:29:16,515 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 315 transitions, 3042 flow [2024-06-28 02:29:16,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:16,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:16,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:16,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 02:29:16,517 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:16,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash -459285940, now seen corresponding path program 14 times [2024-06-28 02:29:16,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:16,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107153023] [2024-06-28 02:29:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:16,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107153023] [2024-06-28 02:29:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107153023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:17,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:17,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:17,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914710504] [2024-06-28 02:29:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:17,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:17,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:17,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:17,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 315 transitions, 3042 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:17,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:17,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:17,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:18,668 INFO L124 PetriNetUnfolderBase]: 1072/2039 cut-off events. [2024-06-28 02:29:18,668 INFO L125 PetriNetUnfolderBase]: For 638610/638610 co-relation queries the response was YES. [2024-06-28 02:29:18,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16654 conditions, 2039 events. 1072/2039 cut-off events. For 638610/638610 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12487 event pairs, 355 based on Foata normal form. 8/2046 useless extension candidates. Maximal degree in co-relation 16490. Up to 1749 conditions per place. [2024-06-28 02:29:18,694 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 310 selfloop transitions, 18 changer transitions 11/341 dead transitions. [2024-06-28 02:29:18,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 341 transitions, 4110 flow [2024-06-28 02:29:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:29:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:29:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 02:29:18,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-28 02:29:18,695 INFO L175 Difference]: Start difference. First operand has 391 places, 315 transitions, 3042 flow. Second operand 12 states and 127 transitions. [2024-06-28 02:29:18,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 341 transitions, 4110 flow [2024-06-28 02:29:20,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 341 transitions, 3876 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:20,897 INFO L231 Difference]: Finished difference. Result has 394 places, 312 transitions, 2828 flow [2024-06-28 02:29:20,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2828, PETRI_PLACES=394, PETRI_TRANSITIONS=312} [2024-06-28 02:29:20,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-28 02:29:20,898 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 312 transitions, 2828 flow [2024-06-28 02:29:20,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:20,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:20,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:20,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 02:29:20,898 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:20,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:20,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1062496402, now seen corresponding path program 27 times [2024-06-28 02:29:20,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:20,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75043505] [2024-06-28 02:29:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:20,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:22,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:22,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75043505] [2024-06-28 02:29:22,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75043505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:22,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:22,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:22,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912821724] [2024-06-28 02:29:22,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:22,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:22,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:22,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:22,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:22,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:22,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 312 transitions, 2828 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:22,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:22,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:22,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:23,349 INFO L124 PetriNetUnfolderBase]: 1058/2010 cut-off events. [2024-06-28 02:29:23,349 INFO L125 PetriNetUnfolderBase]: For 592381/592383 co-relation queries the response was YES. [2024-06-28 02:29:23,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16406 conditions, 2010 events. 1058/2010 cut-off events. For 592381/592383 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 12295 event pairs, 275 based on Foata normal form. 2/2011 useless extension candidates. Maximal degree in co-relation 16241. Up to 1795 conditions per place. [2024-06-28 02:29:23,376 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 278 selfloop transitions, 54 changer transitions 0/334 dead transitions. [2024-06-28 02:29:23,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 334 transitions, 3625 flow [2024-06-28 02:29:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:29:23,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:29:23,377 INFO L175 Difference]: Start difference. First operand has 394 places, 312 transitions, 2828 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:29:23,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 334 transitions, 3625 flow [2024-06-28 02:29:25,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 334 transitions, 3588 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:29:25,779 INFO L231 Difference]: Finished difference. Result has 391 places, 315 transitions, 2988 flow [2024-06-28 02:29:25,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2988, PETRI_PLACES=391, PETRI_TRANSITIONS=315} [2024-06-28 02:29:25,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-28 02:29:25,780 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 315 transitions, 2988 flow [2024-06-28 02:29:25,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:25,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:25,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:25,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 02:29:25,783 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:25,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:25,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2054231566, now seen corresponding path program 28 times [2024-06-28 02:29:25,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:25,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597791802] [2024-06-28 02:29:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:25,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:27,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:27,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597791802] [2024-06-28 02:29:27,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597791802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:27,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:27,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:27,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406775635] [2024-06-28 02:29:27,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:27,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:27,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:27,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:27,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:27,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:27,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 315 transitions, 2988 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:27,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:27,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:27,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:28,206 INFO L124 PetriNetUnfolderBase]: 1062/2018 cut-off events. [2024-06-28 02:29:28,206 INFO L125 PetriNetUnfolderBase]: For 578218/578220 co-relation queries the response was YES. [2024-06-28 02:29:28,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16579 conditions, 2018 events. 1062/2018 cut-off events. For 578218/578220 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 12360 event pairs, 281 based on Foata normal form. 2/2019 useless extension candidates. Maximal degree in co-relation 16415. Up to 1843 conditions per place. [2024-06-28 02:29:28,233 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 286 selfloop transitions, 45 changer transitions 0/333 dead transitions. [2024-06-28 02:29:28,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 333 transitions, 3762 flow [2024-06-28 02:29:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:28,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 02:29:28,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-28 02:29:28,235 INFO L175 Difference]: Start difference. First operand has 391 places, 315 transitions, 2988 flow. Second operand 11 states and 114 transitions. [2024-06-28 02:29:28,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 333 transitions, 3762 flow [2024-06-28 02:29:30,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 333 transitions, 3594 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:29:30,859 INFO L231 Difference]: Finished difference. Result has 394 places, 316 transitions, 2986 flow [2024-06-28 02:29:30,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2986, PETRI_PLACES=394, PETRI_TRANSITIONS=316} [2024-06-28 02:29:30,859 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-28 02:29:30,860 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 316 transitions, 2986 flow [2024-06-28 02:29:30,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:30,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:30,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:30,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 02:29:30,861 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:30,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1564183964, now seen corresponding path program 15 times [2024-06-28 02:29:30,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:30,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832524779] [2024-06-28 02:29:30,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:32,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:32,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832524779] [2024-06-28 02:29:32,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832524779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:32,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:32,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:32,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638084382] [2024-06-28 02:29:32,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:32,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:32,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:32,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:32,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:32,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:32,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 316 transitions, 2986 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:32,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:32,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:32,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:32,904 INFO L124 PetriNetUnfolderBase]: 1046/1989 cut-off events. [2024-06-28 02:29:32,904 INFO L125 PetriNetUnfolderBase]: For 565941/565941 co-relation queries the response was YES. [2024-06-28 02:29:32,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14711 conditions, 1989 events. 1046/1989 cut-off events. For 565941/565941 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12216 event pairs, 347 based on Foata normal form. 12/2000 useless extension candidates. Maximal degree in co-relation 14546. Up to 1870 conditions per place. [2024-06-28 02:29:32,931 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 307 selfloop transitions, 20 changer transitions 7/336 dead transitions. [2024-06-28 02:29:32,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 336 transitions, 3734 flow [2024-06-28 02:29:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:29:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:29:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-28 02:29:32,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-28 02:29:32,932 INFO L175 Difference]: Start difference. First operand has 394 places, 316 transitions, 2986 flow. Second operand 12 states and 122 transitions. [2024-06-28 02:29:32,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 336 transitions, 3734 flow [2024-06-28 02:29:35,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 336 transitions, 3524 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:35,071 INFO L231 Difference]: Finished difference. Result has 397 places, 313 transitions, 2801 flow [2024-06-28 02:29:35,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2801, PETRI_PLACES=397, PETRI_TRANSITIONS=313} [2024-06-28 02:29:35,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-28 02:29:35,072 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 313 transitions, 2801 flow [2024-06-28 02:29:35,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:35,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:35,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:35,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 02:29:35,072 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:35,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:35,073 INFO L85 PathProgramCache]: Analyzing trace with hash -162525686, now seen corresponding path program 29 times [2024-06-28 02:29:35,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:35,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118139048] [2024-06-28 02:29:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:35,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:36,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:36,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118139048] [2024-06-28 02:29:36,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118139048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:36,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:36,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:36,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218358303] [2024-06-28 02:29:36,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:36,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:36,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:36,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:36,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:36,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 313 transitions, 2801 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:36,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:36,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:36,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:37,759 INFO L124 PetriNetUnfolderBase]: 1023/1940 cut-off events. [2024-06-28 02:29:37,759 INFO L125 PetriNetUnfolderBase]: For 478614/478614 co-relation queries the response was YES. [2024-06-28 02:29:37,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14404 conditions, 1940 events. 1023/1940 cut-off events. For 478614/478614 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11758 event pairs, 227 based on Foata normal form. 2/1941 useless extension candidates. Maximal degree in co-relation 14238. Up to 1182 conditions per place. [2024-06-28 02:29:37,786 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 200 selfloop transitions, 133 changer transitions 0/335 dead transitions. [2024-06-28 02:29:37,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 335 transitions, 3609 flow [2024-06-28 02:29:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:29:37,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:29:37,788 INFO L175 Difference]: Start difference. First operand has 397 places, 313 transitions, 2801 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:29:37,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 335 transitions, 3609 flow [2024-06-28 02:29:39,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 335 transitions, 3561 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:29:39,784 INFO L231 Difference]: Finished difference. Result has 396 places, 314 transitions, 3097 flow [2024-06-28 02:29:39,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3097, PETRI_PLACES=396, PETRI_TRANSITIONS=314} [2024-06-28 02:29:39,784 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-28 02:29:39,785 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 314 transitions, 3097 flow [2024-06-28 02:29:39,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:39,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:39,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 02:29:39,785 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:39,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1340845672, now seen corresponding path program 30 times [2024-06-28 02:29:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216073360] [2024-06-28 02:29:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:39,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:41,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:41,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216073360] [2024-06-28 02:29:41,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216073360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:41,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:41,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:41,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856219113] [2024-06-28 02:29:41,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:41,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:41,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:41,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:41,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:41,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 314 transitions, 3097 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:41,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:41,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:41,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:42,075 INFO L124 PetriNetUnfolderBase]: 1027/1949 cut-off events. [2024-06-28 02:29:42,075 INFO L125 PetriNetUnfolderBase]: For 488875/488877 co-relation queries the response was YES. [2024-06-28 02:29:42,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14894 conditions, 1949 events. 1027/1949 cut-off events. For 488875/488877 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11848 event pairs, 257 based on Foata normal form. 2/1950 useless extension candidates. Maximal degree in co-relation 14727. Up to 1735 conditions per place. [2024-06-28 02:29:42,099 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 277 selfloop transitions, 55 changer transitions 0/334 dead transitions. [2024-06-28 02:29:42,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 334 transitions, 3889 flow [2024-06-28 02:29:42,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:42,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:42,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:29:42,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-28 02:29:42,100 INFO L175 Difference]: Start difference. First operand has 396 places, 314 transitions, 3097 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:29:42,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 334 transitions, 3889 flow [2024-06-28 02:29:44,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 334 transitions, 3555 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:44,226 INFO L231 Difference]: Finished difference. Result has 398 places, 315 transitions, 2954 flow [2024-06-28 02:29:44,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2954, PETRI_PLACES=398, PETRI_TRANSITIONS=315} [2024-06-28 02:29:44,226 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-28 02:29:44,226 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 315 transitions, 2954 flow [2024-06-28 02:29:44,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:44,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:44,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:44,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 02:29:44,227 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:44,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1346567528, now seen corresponding path program 16 times [2024-06-28 02:29:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399333243] [2024-06-28 02:29:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:44,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:46,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:46,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399333243] [2024-06-28 02:29:46,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399333243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:46,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:46,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:46,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645411476] [2024-06-28 02:29:46,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:46,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:46,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:46,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:46,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:46,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:46,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 315 transitions, 2954 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:46,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:46,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:46,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:47,364 INFO L124 PetriNetUnfolderBase]: 1059/2021 cut-off events. [2024-06-28 02:29:47,365 INFO L125 PetriNetUnfolderBase]: For 665836/665838 co-relation queries the response was YES. [2024-06-28 02:29:47,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14875 conditions, 2021 events. 1059/2021 cut-off events. For 665836/665838 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12457 event pairs, 263 based on Foata normal form. 20/2040 useless extension candidates. Maximal degree in co-relation 14707. Up to 1707 conditions per place. [2024-06-28 02:29:47,386 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 57 changer transitions 10/338 dead transitions. [2024-06-28 02:29:47,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 338 transitions, 3718 flow [2024-06-28 02:29:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:29:47,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-28 02:29:47,387 INFO L175 Difference]: Start difference. First operand has 398 places, 315 transitions, 2954 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:29:47,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 338 transitions, 3718 flow [2024-06-28 02:29:49,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 338 transitions, 3539 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:49,803 INFO L231 Difference]: Finished difference. Result has 400 places, 309 transitions, 2831 flow [2024-06-28 02:29:49,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2831, PETRI_PLACES=400, PETRI_TRANSITIONS=309} [2024-06-28 02:29:49,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-28 02:29:49,804 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 309 transitions, 2831 flow [2024-06-28 02:29:49,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:49,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:49,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:49,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 02:29:49,804 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:49,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1547648842, now seen corresponding path program 31 times [2024-06-28 02:29:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:49,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628888076] [2024-06-28 02:29:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:49,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:51,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:51,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628888076] [2024-06-28 02:29:51,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628888076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:51,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:51,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:51,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940982978] [2024-06-28 02:29:51,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:51,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:51,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:51,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:51,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:51,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:51,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 309 transitions, 2831 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:51,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:51,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:51,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:52,131 INFO L124 PetriNetUnfolderBase]: 1011/1929 cut-off events. [2024-06-28 02:29:52,132 INFO L125 PetriNetUnfolderBase]: For 500339/500341 co-relation queries the response was YES. [2024-06-28 02:29:52,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14548 conditions, 1929 events. 1011/1929 cut-off events. For 500339/500341 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 11766 event pairs, 247 based on Foata normal form. 2/1930 useless extension candidates. Maximal degree in co-relation 14379. Up to 1653 conditions per place. [2024-06-28 02:29:52,158 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 257 selfloop transitions, 71 changer transitions 0/330 dead transitions. [2024-06-28 02:29:52,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 330 transitions, 3627 flow [2024-06-28 02:29:52,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:29:52,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-28 02:29:52,159 INFO L175 Difference]: Start difference. First operand has 400 places, 309 transitions, 2831 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:29:52,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 330 transitions, 3627 flow [2024-06-28 02:29:54,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 330 transitions, 3470 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-28 02:29:54,304 INFO L231 Difference]: Finished difference. Result has 396 places, 310 transitions, 2898 flow [2024-06-28 02:29:54,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2898, PETRI_PLACES=396, PETRI_TRANSITIONS=310} [2024-06-28 02:29:54,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-28 02:29:54,304 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 310 transitions, 2898 flow [2024-06-28 02:29:54,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:54,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:54,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:54,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 02:29:54,305 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:54,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1777118286, now seen corresponding path program 17 times [2024-06-28 02:29:54,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:54,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827428813] [2024-06-28 02:29:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:54,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:55,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:55,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827428813] [2024-06-28 02:29:55,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827428813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:55,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:55,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:55,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867529721] [2024-06-28 02:29:55,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:55,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:55,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:55,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:55,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:55,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:55,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 310 transitions, 2898 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:55,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:55,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:55,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:56,692 INFO L124 PetriNetUnfolderBase]: 1023/1956 cut-off events. [2024-06-28 02:29:56,693 INFO L125 PetriNetUnfolderBase]: For 550398/550398 co-relation queries the response was YES. [2024-06-28 02:29:56,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14556 conditions, 1956 events. 1023/1956 cut-off events. For 550398/550398 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11978 event pairs, 335 based on Foata normal form. 8/1963 useless extension candidates. Maximal degree in co-relation 14389. Up to 1777 conditions per place. [2024-06-28 02:29:56,712 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 309 selfloop transitions, 17 changer transitions 8/336 dead transitions. [2024-06-28 02:29:56,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 336 transitions, 3964 flow [2024-06-28 02:29:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:29:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:29:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 02:29:56,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-28 02:29:56,713 INFO L175 Difference]: Start difference. First operand has 396 places, 310 transitions, 2898 flow. Second operand 12 states and 125 transitions. [2024-06-28 02:29:56,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 336 transitions, 3964 flow [2024-06-28 02:29:58,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 336 transitions, 3750 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:58,534 INFO L231 Difference]: Finished difference. Result has 399 places, 308 transitions, 2707 flow [2024-06-28 02:29:58,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2684, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2707, PETRI_PLACES=399, PETRI_TRANSITIONS=308} [2024-06-28 02:29:58,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-28 02:29:58,534 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 308 transitions, 2707 flow [2024-06-28 02:29:58,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:58,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:58,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:58,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 02:29:58,535 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:58,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:58,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2081244276, now seen corresponding path program 32 times [2024-06-28 02:29:58,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:58,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383510798] [2024-06-28 02:29:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:58,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:00,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:00,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383510798] [2024-06-28 02:30:00,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383510798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:00,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:00,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:30:00,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584476832] [2024-06-28 02:30:00,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:00,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:30:00,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:30:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:30:00,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:00,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 308 transitions, 2707 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:00,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:00,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:00,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:00,809 INFO L124 PetriNetUnfolderBase]: 1003/1916 cut-off events. [2024-06-28 02:30:00,810 INFO L125 PetriNetUnfolderBase]: For 500218/500218 co-relation queries the response was YES. [2024-06-28 02:30:00,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14307 conditions, 1916 events. 1003/1916 cut-off events. For 500218/500218 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 11659 event pairs, 225 based on Foata normal form. 2/1917 useless extension candidates. Maximal degree in co-relation 14139. Up to 1166 conditions per place. [2024-06-28 02:30:00,837 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 200 selfloop transitions, 128 changer transitions 0/330 dead transitions. [2024-06-28 02:30:00,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 330 transitions, 3509 flow [2024-06-28 02:30:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:30:00,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 02:30:00,838 INFO L175 Difference]: Start difference. First operand has 399 places, 308 transitions, 2707 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:30:00,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 330 transitions, 3509 flow [2024-06-28 02:30:02,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 330 transitions, 3474 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:30:02,868 INFO L231 Difference]: Finished difference. Result has 397 places, 309 transitions, 3012 flow [2024-06-28 02:30:02,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3012, PETRI_PLACES=397, PETRI_TRANSITIONS=309} [2024-06-28 02:30:02,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-28 02:30:02,869 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 309 transitions, 3012 flow [2024-06-28 02:30:02,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:02,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:02,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:02,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 02:30:02,870 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:02,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:02,870 INFO L85 PathProgramCache]: Analyzing trace with hash -854402672, now seen corresponding path program 33 times [2024-06-28 02:30:02,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:02,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233359391] [2024-06-28 02:30:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:02,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:04,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:04,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233359391] [2024-06-28 02:30:04,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233359391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:04,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:04,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:04,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492147679] [2024-06-28 02:30:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:04,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:04,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:04,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 309 transitions, 3012 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:04,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:04,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:04,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:05,334 INFO L124 PetriNetUnfolderBase]: 1007/1925 cut-off events. [2024-06-28 02:30:05,335 INFO L125 PetriNetUnfolderBase]: For 497054/497056 co-relation queries the response was YES. [2024-06-28 02:30:05,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14729 conditions, 1925 events. 1007/1925 cut-off events. For 497054/497056 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 11735 event pairs, 247 based on Foata normal form. 2/1926 useless extension candidates. Maximal degree in co-relation 14562. Up to 1676 conditions per place. [2024-06-28 02:30:05,358 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 263 selfloop transitions, 65 changer transitions 0/330 dead transitions. [2024-06-28 02:30:05,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 330 transitions, 3810 flow [2024-06-28 02:30:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:30:05,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:30:05,359 INFO L175 Difference]: Start difference. First operand has 397 places, 309 transitions, 3012 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:30:05,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 330 transitions, 3810 flow [2024-06-28 02:30:07,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 330 transitions, 3480 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:07,733 INFO L231 Difference]: Finished difference. Result has 399 places, 310 transitions, 2900 flow [2024-06-28 02:30:07,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2682, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2900, PETRI_PLACES=399, PETRI_TRANSITIONS=310} [2024-06-28 02:30:07,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-28 02:30:07,734 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 310 transitions, 2900 flow [2024-06-28 02:30:07,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:07,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:07,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:07,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 02:30:07,735 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:07,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:07,735 INFO L85 PathProgramCache]: Analyzing trace with hash 777819386, now seen corresponding path program 18 times [2024-06-28 02:30:07,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:07,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576081484] [2024-06-28 02:30:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:07,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:09,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576081484] [2024-06-28 02:30:09,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576081484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:09,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:09,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:09,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954611023] [2024-06-28 02:30:09,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:09,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:09,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:09,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:09,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 310 transitions, 2900 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:09,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:09,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:09,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:10,107 INFO L124 PetriNetUnfolderBase]: 1010/1938 cut-off events. [2024-06-28 02:30:10,107 INFO L125 PetriNetUnfolderBase]: For 578812/578814 co-relation queries the response was YES. [2024-06-28 02:30:10,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13142 conditions, 1938 events. 1010/1938 cut-off events. For 578812/578814 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 11886 event pairs, 234 based on Foata normal form. 20/1957 useless extension candidates. Maximal degree in co-relation 12974. Up to 1548 conditions per place. [2024-06-28 02:30:10,132 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 62 changer transitions 22/336 dead transitions. [2024-06-28 02:30:10,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 336 transitions, 3672 flow [2024-06-28 02:30:10,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:10,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 02:30:10,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:30:10,133 INFO L175 Difference]: Start difference. First operand has 399 places, 310 transitions, 2900 flow. Second operand 12 states and 138 transitions. [2024-06-28 02:30:10,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 336 transitions, 3672 flow [2024-06-28 02:30:11,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 336 transitions, 3466 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:11,897 INFO L231 Difference]: Finished difference. Result has 402 places, 298 transitions, 2711 flow [2024-06-28 02:30:11,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2711, PETRI_PLACES=402, PETRI_TRANSITIONS=298} [2024-06-28 02:30:11,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 371 predicate places. [2024-06-28 02:30:11,898 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 298 transitions, 2711 flow [2024-06-28 02:30:11,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:11,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:11,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:11,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 02:30:11,898 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:11,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:11,898 INFO L85 PathProgramCache]: Analyzing trace with hash -466075034, now seen corresponding path program 19 times [2024-06-28 02:30:11,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:11,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273942880] [2024-06-28 02:30:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:11,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:13,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:13,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273942880] [2024-06-28 02:30:13,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273942880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:13,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:13,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:13,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146420422] [2024-06-28 02:30:13,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:13,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:13,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:13,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:13,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:13,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:13,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 298 transitions, 2711 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:13,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:13,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:13,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:14,521 INFO L124 PetriNetUnfolderBase]: 940/1811 cut-off events. [2024-06-28 02:30:14,521 INFO L125 PetriNetUnfolderBase]: For 440401/440401 co-relation queries the response was YES. [2024-06-28 02:30:14,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11872 conditions, 1811 events. 940/1811 cut-off events. For 440401/440401 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10993 event pairs, 312 based on Foata normal form. 10/1820 useless extension candidates. Maximal degree in co-relation 11703. Up to 1707 conditions per place. [2024-06-28 02:30:14,541 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 289 selfloop transitions, 15 changer transitions 13/319 dead transitions. [2024-06-28 02:30:14,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 319 transitions, 3427 flow [2024-06-28 02:30:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:30:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:30:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-06-28 02:30:14,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3004807692307692 [2024-06-28 02:30:14,542 INFO L175 Difference]: Start difference. First operand has 402 places, 298 transitions, 2711 flow. Second operand 13 states and 125 transitions. [2024-06-28 02:30:14,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 319 transitions, 3427 flow [2024-06-28 02:30:16,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 319 transitions, 3293 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 02:30:16,040 INFO L231 Difference]: Finished difference. Result has 394 places, 293 transitions, 2577 flow [2024-06-28 02:30:16,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2577, PETRI_PLACES=394, PETRI_TRANSITIONS=293} [2024-06-28 02:30:16,040 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-28 02:30:16,040 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 293 transitions, 2577 flow [2024-06-28 02:30:16,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:16,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:16,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:16,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 02:30:16,041 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:16,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:16,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2014426810, now seen corresponding path program 34 times [2024-06-28 02:30:16,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:16,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622666748] [2024-06-28 02:30:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:16,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:17,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:17,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622666748] [2024-06-28 02:30:17,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622666748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:17,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:17,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:17,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152677740] [2024-06-28 02:30:17,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:17,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:17,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:17,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:17,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:17,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:17,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 293 transitions, 2577 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:17,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:17,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:17,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:18,327 INFO L124 PetriNetUnfolderBase]: 912/1760 cut-off events. [2024-06-28 02:30:18,328 INFO L125 PetriNetUnfolderBase]: For 349571/349573 co-relation queries the response was YES. [2024-06-28 02:30:18,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11584 conditions, 1760 events. 912/1760 cut-off events. For 349571/349573 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10664 event pairs, 188 based on Foata normal form. 2/1761 useless extension candidates. Maximal degree in co-relation 11418. Up to 1471 conditions per place. [2024-06-28 02:30:18,349 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 78 changer transitions 0/313 dead transitions. [2024-06-28 02:30:18,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 313 transitions, 3337 flow [2024-06-28 02:30:18,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:18,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:30:18,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 02:30:18,351 INFO L175 Difference]: Start difference. First operand has 394 places, 293 transitions, 2577 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:30:18,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 313 transitions, 3337 flow [2024-06-28 02:30:19,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 313 transitions, 3299 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 02:30:19,851 INFO L231 Difference]: Finished difference. Result has 388 places, 294 transitions, 2779 flow [2024-06-28 02:30:19,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2539, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2779, PETRI_PLACES=388, PETRI_TRANSITIONS=294} [2024-06-28 02:30:19,851 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-28 02:30:19,852 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 294 transitions, 2779 flow [2024-06-28 02:30:19,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:19,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:19,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:19,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 02:30:19,852 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:19,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash -173337328, now seen corresponding path program 20 times [2024-06-28 02:30:19,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:19,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535116850] [2024-06-28 02:30:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:19,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:21,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535116850] [2024-06-28 02:30:21,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535116850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:21,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:21,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526756832] [2024-06-28 02:30:21,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:21,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:21,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:21,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:21,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 294 transitions, 2779 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:21,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:21,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:21,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:22,499 INFO L124 PetriNetUnfolderBase]: 953/1847 cut-off events. [2024-06-28 02:30:22,499 INFO L125 PetriNetUnfolderBase]: For 484706/484708 co-relation queries the response was YES. [2024-06-28 02:30:22,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13354 conditions, 1847 events. 953/1847 cut-off events. For 484706/484708 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11260 event pairs, 197 based on Foata normal form. 8/1854 useless extension candidates. Maximal degree in co-relation 13190. Up to 1341 conditions per place. [2024-06-28 02:30:22,519 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 91 changer transitions 8/325 dead transitions. [2024-06-28 02:30:22,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 325 transitions, 3841 flow [2024-06-28 02:30:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:22,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:30:22,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-28 02:30:22,520 INFO L175 Difference]: Start difference. First operand has 388 places, 294 transitions, 2779 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:30:22,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 325 transitions, 3841 flow [2024-06-28 02:30:24,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 325 transitions, 3611 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:24,194 INFO L231 Difference]: Finished difference. Result has 390 places, 292 transitions, 2721 flow [2024-06-28 02:30:24,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2549, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2721, PETRI_PLACES=390, PETRI_TRANSITIONS=292} [2024-06-28 02:30:24,194 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-28 02:30:24,194 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 292 transitions, 2721 flow [2024-06-28 02:30:24,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:24,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:24,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:24,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 02:30:24,195 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:24,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:24,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1547916248, now seen corresponding path program 21 times [2024-06-28 02:30:24,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:24,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805931838] [2024-06-28 02:30:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:24,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:26,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:26,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:26,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805931838] [2024-06-28 02:30:26,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805931838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:26,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:26,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:26,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608653723] [2024-06-28 02:30:26,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:26,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:26,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:26,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:26,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:26,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:26,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 292 transitions, 2721 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:26,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:26,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:26,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:27,140 INFO L124 PetriNetUnfolderBase]: 945/1835 cut-off events. [2024-06-28 02:30:27,141 INFO L125 PetriNetUnfolderBase]: For 507837/507839 co-relation queries the response was YES. [2024-06-28 02:30:27,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13245 conditions, 1835 events. 945/1835 cut-off events. For 507837/507839 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11187 event pairs, 239 based on Foata normal form. 10/1844 useless extension candidates. Maximal degree in co-relation 13080. Up to 1522 conditions per place. [2024-06-28 02:30:27,165 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 66 changer transitions 11/318 dead transitions. [2024-06-28 02:30:27,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 318 transitions, 3457 flow [2024-06-28 02:30:27,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 02:30:27,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-28 02:30:27,166 INFO L175 Difference]: Start difference. First operand has 390 places, 292 transitions, 2721 flow. Second operand 12 states and 137 transitions. [2024-06-28 02:30:27,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 318 transitions, 3457 flow [2024-06-28 02:30:28,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 318 transitions, 3271 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:30:29,005 INFO L231 Difference]: Finished difference. Result has 389 places, 289 transitions, 2649 flow [2024-06-28 02:30:29,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2535, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2649, PETRI_PLACES=389, PETRI_TRANSITIONS=289} [2024-06-28 02:30:29,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-28 02:30:29,005 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 289 transitions, 2649 flow [2024-06-28 02:30:29,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:29,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:29,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:29,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 02:30:29,006 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:29,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:29,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1547925548, now seen corresponding path program 22 times [2024-06-28 02:30:29,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:29,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601633432] [2024-06-28 02:30:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:29,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:30,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:30,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601633432] [2024-06-28 02:30:30,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601633432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:30,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:30,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:30,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853148020] [2024-06-28 02:30:30,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:30,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:30,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:30,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:30,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:30,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:30,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 289 transitions, 2649 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:30,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:30,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:30,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:31,758 INFO L124 PetriNetUnfolderBase]: 933/1815 cut-off events. [2024-06-28 02:30:31,758 INFO L125 PetriNetUnfolderBase]: For 483726/483728 co-relation queries the response was YES. [2024-06-28 02:30:31,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13048 conditions, 1815 events. 933/1815 cut-off events. For 483726/483728 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11079 event pairs, 231 based on Foata normal form. 8/1822 useless extension candidates. Maximal degree in co-relation 12884. Up to 1415 conditions per place. [2024-06-28 02:30:31,780 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 64 changer transitions 8/319 dead transitions. [2024-06-28 02:30:31,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 319 transitions, 3687 flow [2024-06-28 02:30:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 02:30:31,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 02:30:31,781 INFO L175 Difference]: Start difference. First operand has 389 places, 289 transitions, 2649 flow. Second operand 12 states and 140 transitions. [2024-06-28 02:30:31,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 319 transitions, 3687 flow [2024-06-28 02:30:33,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 319 transitions, 3532 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:30:33,541 INFO L231 Difference]: Finished difference. Result has 387 places, 286 transitions, 2608 flow [2024-06-28 02:30:33,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2608, PETRI_PLACES=387, PETRI_TRANSITIONS=286} [2024-06-28 02:30:33,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-28 02:30:33,541 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 286 transitions, 2608 flow [2024-06-28 02:30:33,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:33,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:33,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:33,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 02:30:33,542 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:33,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2073619640, now seen corresponding path program 23 times [2024-06-28 02:30:33,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:33,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814299615] [2024-06-28 02:30:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:33,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:35,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:35,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814299615] [2024-06-28 02:30:35,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814299615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:35,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:35,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757880177] [2024-06-28 02:30:35,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:35,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:35,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:35,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:35,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:35,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:35,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 286 transitions, 2608 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:35,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:35,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:35,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:36,083 INFO L124 PetriNetUnfolderBase]: 930/1810 cut-off events. [2024-06-28 02:30:36,083 INFO L125 PetriNetUnfolderBase]: For 500406/500408 co-relation queries the response was YES. [2024-06-28 02:30:36,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13002 conditions, 1810 events. 930/1810 cut-off events. For 500406/500408 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11030 event pairs, 203 based on Foata normal form. 10/1819 useless extension candidates. Maximal degree in co-relation 12838. Up to 1411 conditions per place. [2024-06-28 02:30:36,103 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 89 changer transitions 13/315 dead transitions. [2024-06-28 02:30:36,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 315 transitions, 3356 flow [2024-06-28 02:30:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 02:30:36,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 02:30:36,107 INFO L175 Difference]: Start difference. First operand has 387 places, 286 transitions, 2608 flow. Second operand 12 states and 140 transitions. [2024-06-28 02:30:36,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 315 transitions, 3356 flow [2024-06-28 02:30:37,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 315 transitions, 3228 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:30:37,632 INFO L231 Difference]: Finished difference. Result has 384 places, 282 transitions, 2636 flow [2024-06-28 02:30:37,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2636, PETRI_PLACES=384, PETRI_TRANSITIONS=282} [2024-06-28 02:30:37,632 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-28 02:30:37,633 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 282 transitions, 2636 flow [2024-06-28 02:30:37,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:37,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:37,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:37,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 02:30:37,633 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:37,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:37,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1547656778, now seen corresponding path program 24 times [2024-06-28 02:30:37,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:37,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937150419] [2024-06-28 02:30:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:37,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:39,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:39,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937150419] [2024-06-28 02:30:39,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937150419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:39,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:39,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:39,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175215701] [2024-06-28 02:30:39,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:39,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:39,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:39,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:39,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:39,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 282 transitions, 2636 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:39,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:39,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:39,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:40,507 INFO L124 PetriNetUnfolderBase]: 904/1764 cut-off events. [2024-06-28 02:30:40,507 INFO L125 PetriNetUnfolderBase]: For 451622/451624 co-relation queries the response was YES. [2024-06-28 02:30:40,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12274 conditions, 1764 events. 904/1764 cut-off events. For 451622/451624 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10717 event pairs, 231 based on Foata normal form. 10/1773 useless extension candidates. Maximal degree in co-relation 12112. Up to 1454 conditions per place. [2024-06-28 02:30:40,529 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 63 changer transitions 9/308 dead transitions. [2024-06-28 02:30:40,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 308 transitions, 3352 flow [2024-06-28 02:30:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:40,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 02:30:40,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:30:40,531 INFO L175 Difference]: Start difference. First operand has 384 places, 282 transitions, 2636 flow. Second operand 12 states and 136 transitions. [2024-06-28 02:30:40,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 308 transitions, 3352 flow [2024-06-28 02:30:42,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 308 transitions, 3168 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:30:42,076 INFO L231 Difference]: Finished difference. Result has 380 places, 279 transitions, 2562 flow [2024-06-28 02:30:42,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2562, PETRI_PLACES=380, PETRI_TRANSITIONS=279} [2024-06-28 02:30:42,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-28 02:30:42,077 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 279 transitions, 2562 flow [2024-06-28 02:30:42,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:42,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:42,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:42,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 02:30:42,078 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:42,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:42,079 INFO L85 PathProgramCache]: Analyzing trace with hash -173606098, now seen corresponding path program 25 times [2024-06-28 02:30:42,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:42,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488275219] [2024-06-28 02:30:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:43,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:43,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488275219] [2024-06-28 02:30:43,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488275219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:43,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:43,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:43,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374419543] [2024-06-28 02:30:43,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:43,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:43,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:43,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:43,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:44,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:44,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 279 transitions, 2562 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:44,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:44,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:44,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:45,062 INFO L124 PetriNetUnfolderBase]: 894/1750 cut-off events. [2024-06-28 02:30:45,062 INFO L125 PetriNetUnfolderBase]: For 438434/438436 co-relation queries the response was YES. [2024-06-28 02:30:45,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12052 conditions, 1750 events. 894/1750 cut-off events. For 438434/438436 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10643 event pairs, 195 based on Foata normal form. 10/1759 useless extension candidates. Maximal degree in co-relation 11892. Up to 1365 conditions per place. [2024-06-28 02:30:45,090 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 85 changer transitions 11/307 dead transitions. [2024-06-28 02:30:45,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 307 transitions, 3288 flow [2024-06-28 02:30:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 02:30:45,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-28 02:30:45,091 INFO L175 Difference]: Start difference. First operand has 380 places, 279 transitions, 2562 flow. Second operand 12 states and 139 transitions. [2024-06-28 02:30:45,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 307 transitions, 3288 flow [2024-06-28 02:30:46,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 307 transitions, 3156 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:30:46,562 INFO L231 Difference]: Finished difference. Result has 378 places, 276 transitions, 2584 flow [2024-06-28 02:30:46,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2584, PETRI_PLACES=378, PETRI_TRANSITIONS=276} [2024-06-28 02:30:46,562 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-28 02:30:46,563 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 276 transitions, 2584 flow [2024-06-28 02:30:46,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:46,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:46,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:46,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 02:30:46,563 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:46,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:46,563 INFO L85 PathProgramCache]: Analyzing trace with hash -180755938, now seen corresponding path program 26 times [2024-06-28 02:30:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:46,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145947357] [2024-06-28 02:30:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:46,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:48,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:48,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145947357] [2024-06-28 02:30:48,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145947357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:48,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:48,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105073038] [2024-06-28 02:30:48,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:48,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:48,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:48,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:48,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 276 transitions, 2584 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:48,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:48,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:48,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:48,882 INFO L124 PetriNetUnfolderBase]: 884/1736 cut-off events. [2024-06-28 02:30:48,882 INFO L125 PetriNetUnfolderBase]: For 431787/431789 co-relation queries the response was YES. [2024-06-28 02:30:48,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12017 conditions, 1736 events. 884/1736 cut-off events. For 431787/431789 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10559 event pairs, 191 based on Foata normal form. 10/1745 useless extension candidates. Maximal degree in co-relation 11858. Up to 1357 conditions per place. [2024-06-28 02:30:48,902 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 79 changer transitions 16/303 dead transitions. [2024-06-28 02:30:48,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 303 transitions, 3296 flow [2024-06-28 02:30:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 02:30:48,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:30:48,904 INFO L175 Difference]: Start difference. First operand has 378 places, 276 transitions, 2584 flow. Second operand 12 states and 138 transitions. [2024-06-28 02:30:48,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 303 transitions, 3296 flow [2024-06-28 02:30:50,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 303 transitions, 3122 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:30:50,382 INFO L231 Difference]: Finished difference. Result has 376 places, 270 transitions, 2535 flow [2024-06-28 02:30:50,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2535, PETRI_PLACES=376, PETRI_TRANSITIONS=270} [2024-06-28 02:30:50,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-28 02:30:50,383 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 270 transitions, 2535 flow [2024-06-28 02:30:50,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:50,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:50,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:50,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 02:30:50,383 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:50,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash -380273054, now seen corresponding path program 35 times [2024-06-28 02:30:50,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:50,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644966476] [2024-06-28 02:30:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:51,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:51,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644966476] [2024-06-28 02:30:51,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644966476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:51,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:51,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007513041] [2024-06-28 02:30:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:51,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:51,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:51,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:51,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:52,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:52,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 270 transitions, 2535 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:52,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:52,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:52,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:52,699 INFO L124 PetriNetUnfolderBase]: 852/1676 cut-off events. [2024-06-28 02:30:52,700 INFO L125 PetriNetUnfolderBase]: For 362314/362316 co-relation queries the response was YES. [2024-06-28 02:30:52,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11890 conditions, 1676 events. 852/1676 cut-off events. For 362314/362316 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10144 event pairs, 187 based on Foata normal form. 2/1677 useless extension candidates. Maximal degree in co-relation 11732. Up to 1387 conditions per place. [2024-06-28 02:30:52,720 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 77 changer transitions 0/290 dead transitions. [2024-06-28 02:30:52,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 290 transitions, 3249 flow [2024-06-28 02:30:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:30:52,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-28 02:30:52,722 INFO L175 Difference]: Start difference. First operand has 376 places, 270 transitions, 2535 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:30:52,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 290 transitions, 3249 flow [2024-06-28 02:30:54,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 290 transitions, 3079 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:30:54,114 INFO L231 Difference]: Finished difference. Result has 369 places, 271 transitions, 2605 flow [2024-06-28 02:30:54,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2605, PETRI_PLACES=369, PETRI_TRANSITIONS=271} [2024-06-28 02:30:54,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-28 02:30:54,115 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 271 transitions, 2605 flow [2024-06-28 02:30:54,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:54,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:54,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:54,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 02:30:54,115 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:54,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:54,116 INFO L85 PathProgramCache]: Analyzing trace with hash -380417204, now seen corresponding path program 36 times [2024-06-28 02:30:54,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:54,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499369802] [2024-06-28 02:30:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:54,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:55,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499369802] [2024-06-28 02:30:55,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499369802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:55,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:55,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:30:55,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296538990] [2024-06-28 02:30:55,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:55,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:30:55,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:30:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:30:55,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:55,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 271 transitions, 2605 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:55,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:55,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:55,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:56,361 INFO L124 PetriNetUnfolderBase]: 849/1671 cut-off events. [2024-06-28 02:30:56,361 INFO L125 PetriNetUnfolderBase]: For 329964/329966 co-relation queries the response was YES. [2024-06-28 02:30:56,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11425 conditions, 1671 events. 849/1671 cut-off events. For 329964/329966 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10121 event pairs, 184 based on Foata normal form. 2/1672 useless extension candidates. Maximal degree in co-relation 11270. Up to 1382 conditions per place. [2024-06-28 02:30:56,376 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 76 changer transitions 0/290 dead transitions. [2024-06-28 02:30:56,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 290 transitions, 3237 flow [2024-06-28 02:30:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:30:56,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-28 02:30:56,378 INFO L175 Difference]: Start difference. First operand has 369 places, 271 transitions, 2605 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:30:56,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 290 transitions, 3237 flow [2024-06-28 02:30:57,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 290 transitions, 3009 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:57,816 INFO L231 Difference]: Finished difference. Result has 371 places, 271 transitions, 2533 flow [2024-06-28 02:30:57,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2533, PETRI_PLACES=371, PETRI_TRANSITIONS=271} [2024-06-28 02:30:57,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-28 02:30:57,816 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 271 transitions, 2533 flow [2024-06-28 02:30:57,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:57,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:57,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:57,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 02:30:57,817 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:57,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:57,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2019998936, now seen corresponding path program 27 times [2024-06-28 02:30:57,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:57,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583263274] [2024-06-28 02:30:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:57,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:59,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:59,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583263274] [2024-06-28 02:30:59,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583263274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:59,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:59,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:59,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436387643] [2024-06-28 02:30:59,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:59,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:59,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:59,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:59,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:59,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:59,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 271 transitions, 2533 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:59,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:59,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:59,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:59,953 INFO L124 PetriNetUnfolderBase]: 851/1681 cut-off events. [2024-06-28 02:30:59,953 INFO L125 PetriNetUnfolderBase]: For 363170/363172 co-relation queries the response was YES. [2024-06-28 02:30:59,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10812 conditions, 1681 events. 851/1681 cut-off events. For 363170/363172 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10216 event pairs, 190 based on Foata normal form. 10/1690 useless extension candidates. Maximal degree in co-relation 10656. Up to 1338 conditions per place. [2024-06-28 02:30:59,972 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 74 changer transitions 16/296 dead transitions. [2024-06-28 02:30:59,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 296 transitions, 3221 flow [2024-06-28 02:30:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 02:30:59,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-28 02:30:59,973 INFO L175 Difference]: Start difference. First operand has 371 places, 271 transitions, 2533 flow. Second operand 12 states and 133 transitions. [2024-06-28 02:30:59,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 296 transitions, 3221 flow [2024-06-28 02:31:01,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 296 transitions, 2847 flow, removed 39 selfloop flow, removed 11 redundant places. [2024-06-28 02:31:01,445 INFO L231 Difference]: Finished difference. Result has 372 places, 265 transitions, 2280 flow [2024-06-28 02:31:01,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2280, PETRI_PLACES=372, PETRI_TRANSITIONS=265} [2024-06-28 02:31:01,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-28 02:31:01,445 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 265 transitions, 2280 flow [2024-06-28 02:31:01,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:01,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:01,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:01,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 02:31:01,446 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:01,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:01,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1736565086, now seen corresponding path program 28 times [2024-06-28 02:31:01,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:01,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944536061] [2024-06-28 02:31:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:01,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:03,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:03,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944536061] [2024-06-28 02:31:03,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944536061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:03,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:03,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:03,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503359334] [2024-06-28 02:31:03,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:03,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:03,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:03,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:03,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:03,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 265 transitions, 2280 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:03,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:03,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:03,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:04,414 INFO L124 PetriNetUnfolderBase]: 824/1635 cut-off events. [2024-06-28 02:31:04,414 INFO L125 PetriNetUnfolderBase]: For 349111/349111 co-relation queries the response was YES. [2024-06-28 02:31:04,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9992 conditions, 1635 events. 824/1635 cut-off events. For 349111/349111 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9946 event pairs, 198 based on Foata normal form. 10/1644 useless extension candidates. Maximal degree in co-relation 9836. Up to 1383 conditions per place. [2024-06-28 02:31:04,432 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 230 selfloop transitions, 55 changer transitions 11/298 dead transitions. [2024-06-28 02:31:04,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 298 transitions, 3006 flow [2024-06-28 02:31:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:31:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:31:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-28 02:31:04,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-28 02:31:04,433 INFO L175 Difference]: Start difference. First operand has 372 places, 265 transitions, 2280 flow. Second operand 13 states and 145 transitions. [2024-06-28 02:31:04,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 298 transitions, 3006 flow [2024-06-28 02:31:05,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 298 transitions, 2850 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:05,733 INFO L231 Difference]: Finished difference. Result has 367 places, 262 transitions, 2218 flow [2024-06-28 02:31:05,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2218, PETRI_PLACES=367, PETRI_TRANSITIONS=262} [2024-06-28 02:31:05,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2024-06-28 02:31:05,734 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 262 transitions, 2218 flow [2024-06-28 02:31:05,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:05,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:05,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:05,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 02:31:05,735 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:05,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:05,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1854566874, now seen corresponding path program 1 times [2024-06-28 02:31:05,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:05,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496418910] [2024-06-28 02:31:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:05,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:08,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:08,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496418910] [2024-06-28 02:31:08,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496418910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:08,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:08,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:08,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041815754] [2024-06-28 02:31:08,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:08,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:08,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:08,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:08,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:08,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:08,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 262 transitions, 2218 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:08,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:08,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:08,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:09,234 INFO L124 PetriNetUnfolderBase]: 806/1605 cut-off events. [2024-06-28 02:31:09,234 INFO L125 PetriNetUnfolderBase]: For 302167/302167 co-relation queries the response was YES. [2024-06-28 02:31:09,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9704 conditions, 1605 events. 806/1605 cut-off events. For 302167/302167 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9751 event pairs, 219 based on Foata normal form. 6/1610 useless extension candidates. Maximal degree in co-relation 9551. Up to 1388 conditions per place. [2024-06-28 02:31:09,251 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 47 changer transitions 15/285 dead transitions. [2024-06-28 02:31:09,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 285 transitions, 2848 flow [2024-06-28 02:31:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 02:31:09,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-28 02:31:09,252 INFO L175 Difference]: Start difference. First operand has 367 places, 262 transitions, 2218 flow. Second operand 12 states and 125 transitions. [2024-06-28 02:31:09,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 285 transitions, 2848 flow [2024-06-28 02:31:10,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 285 transitions, 2729 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:10,506 INFO L231 Difference]: Finished difference. Result has 364 places, 254 transitions, 2117 flow [2024-06-28 02:31:10,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2117, PETRI_PLACES=364, PETRI_TRANSITIONS=254} [2024-06-28 02:31:10,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-28 02:31:10,507 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 254 transitions, 2117 flow [2024-06-28 02:31:10,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:10,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:10,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:10,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 02:31:10,508 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:10,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:10,508 INFO L85 PathProgramCache]: Analyzing trace with hash -748113084, now seen corresponding path program 2 times [2024-06-28 02:31:10,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:10,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651926068] [2024-06-28 02:31:10,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:10,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:12,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:12,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651926068] [2024-06-28 02:31:12,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651926068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:12,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:12,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:12,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864594506] [2024-06-28 02:31:12,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:12,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:12,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:12,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:12,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:12,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:12,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 254 transitions, 2117 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:12,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:12,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:12,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:13,215 INFO L124 PetriNetUnfolderBase]: 797/1598 cut-off events. [2024-06-28 02:31:13,216 INFO L125 PetriNetUnfolderBase]: For 344056/344056 co-relation queries the response was YES. [2024-06-28 02:31:13,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10291 conditions, 1598 events. 797/1598 cut-off events. For 344056/344056 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9722 event pairs, 230 based on Foata normal form. 6/1603 useless extension candidates. Maximal degree in co-relation 10139. Up to 1342 conditions per place. [2024-06-28 02:31:13,234 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 39 changer transitions 13/278 dead transitions. [2024-06-28 02:31:13,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 278 transitions, 2987 flow [2024-06-28 02:31:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:31:13,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-28 02:31:13,235 INFO L175 Difference]: Start difference. First operand has 364 places, 254 transitions, 2117 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:31:13,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 278 transitions, 2987 flow [2024-06-28 02:31:14,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 278 transitions, 2881 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:31:14,397 INFO L231 Difference]: Finished difference. Result has 359 places, 246 transitions, 2028 flow [2024-06-28 02:31:14,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2028, PETRI_PLACES=359, PETRI_TRANSITIONS=246} [2024-06-28 02:31:14,397 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-28 02:31:14,397 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 246 transitions, 2028 flow [2024-06-28 02:31:14,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:14,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:14,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:14,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 02:31:14,398 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:14,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash -752581734, now seen corresponding path program 3 times [2024-06-28 02:31:14,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:14,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820178164] [2024-06-28 02:31:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:14,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:15,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:15,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820178164] [2024-06-28 02:31:15,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820178164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:15,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:15,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:15,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940371679] [2024-06-28 02:31:15,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:15,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:16,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:16,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 246 transitions, 2028 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:16,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:16,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:16,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:16,595 INFO L124 PetriNetUnfolderBase]: 773/1558 cut-off events. [2024-06-28 02:31:16,595 INFO L125 PetriNetUnfolderBase]: For 338559/338559 co-relation queries the response was YES. [2024-06-28 02:31:16,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10072 conditions, 1558 events. 773/1558 cut-off events. For 338559/338559 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9444 event pairs, 226 based on Foata normal form. 6/1563 useless extension candidates. Maximal degree in co-relation 9921. Up to 1377 conditions per place. [2024-06-28 02:31:16,613 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 30 changer transitions 21/269 dead transitions. [2024-06-28 02:31:16,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 269 transitions, 2622 flow [2024-06-28 02:31:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 02:31:16,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-28 02:31:16,615 INFO L175 Difference]: Start difference. First operand has 359 places, 246 transitions, 2028 flow. Second operand 12 states and 123 transitions. [2024-06-28 02:31:16,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 269 transitions, 2622 flow [2024-06-28 02:31:17,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 269 transitions, 2532 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:17,923 INFO L231 Difference]: Finished difference. Result has 355 places, 236 transitions, 1913 flow [2024-06-28 02:31:17,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1913, PETRI_PLACES=355, PETRI_TRANSITIONS=236} [2024-06-28 02:31:17,924 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-28 02:31:17,924 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 236 transitions, 1913 flow [2024-06-28 02:31:17,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:17,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:17,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:17,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 02:31:17,925 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:17,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:17,925 INFO L85 PathProgramCache]: Analyzing trace with hash -863404254, now seen corresponding path program 4 times [2024-06-28 02:31:17,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:17,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253762884] [2024-06-28 02:31:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:17,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:19,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:19,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253762884] [2024-06-28 02:31:19,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253762884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:19,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:19,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:19,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104074763] [2024-06-28 02:31:19,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:19,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:19,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:19,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:19,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:19,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:19,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 236 transitions, 1913 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:19,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:19,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:19,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:20,372 INFO L124 PetriNetUnfolderBase]: 741/1506 cut-off events. [2024-06-28 02:31:20,372 INFO L125 PetriNetUnfolderBase]: For 322461/322461 co-relation queries the response was YES. [2024-06-28 02:31:20,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9701 conditions, 1506 events. 741/1506 cut-off events. For 322461/322461 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9126 event pairs, 219 based on Foata normal form. 6/1511 useless extension candidates. Maximal degree in co-relation 9553. Up to 1325 conditions per place. [2024-06-28 02:31:20,389 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 22 changer transitions 24/259 dead transitions. [2024-06-28 02:31:20,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 259 transitions, 2485 flow [2024-06-28 02:31:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-28 02:31:20,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-28 02:31:20,390 INFO L175 Difference]: Start difference. First operand has 355 places, 236 transitions, 1913 flow. Second operand 12 states and 122 transitions. [2024-06-28 02:31:20,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 259 transitions, 2485 flow [2024-06-28 02:31:21,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 259 transitions, 2409 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:21,456 INFO L231 Difference]: Finished difference. Result has 347 places, 224 transitions, 1770 flow [2024-06-28 02:31:21,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1770, PETRI_PLACES=347, PETRI_TRANSITIONS=224} [2024-06-28 02:31:21,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-28 02:31:21,457 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 224 transitions, 1770 flow [2024-06-28 02:31:21,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:21,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:21,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:21,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 02:31:21,458 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:21,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:21,458 INFO L85 PathProgramCache]: Analyzing trace with hash -855673856, now seen corresponding path program 5 times [2024-06-28 02:31:21,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:21,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015447942] [2024-06-28 02:31:21,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:21,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:23,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:23,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015447942] [2024-06-28 02:31:23,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015447942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:23,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:23,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717021869] [2024-06-28 02:31:23,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:23,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:23,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:23,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:23,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:23,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 224 transitions, 1770 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:23,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:23,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:23,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:24,079 INFO L124 PetriNetUnfolderBase]: 705/1446 cut-off events. [2024-06-28 02:31:24,080 INFO L125 PetriNetUnfolderBase]: For 301552/301552 co-relation queries the response was YES. [2024-06-28 02:31:24,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9279 conditions, 1446 events. 705/1446 cut-off events. For 301552/301552 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8728 event pairs, 190 based on Foata normal form. 6/1451 useless extension candidates. Maximal degree in co-relation 9135. Up to 1184 conditions per place. [2024-06-28 02:31:24,095 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 193 selfloop transitions, 18 changer transitions 34/247 dead transitions. [2024-06-28 02:31:24,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 247 transitions, 2318 flow [2024-06-28 02:31:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:24,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-28 02:31:24,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-28 02:31:24,096 INFO L175 Difference]: Start difference. First operand has 347 places, 224 transitions, 1770 flow. Second operand 12 states and 121 transitions. [2024-06-28 02:31:24,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 247 transitions, 2318 flow [2024-06-28 02:31:25,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 247 transitions, 2252 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 02:31:25,161 INFO L231 Difference]: Finished difference. Result has 337 places, 205 transitions, 1629 flow [2024-06-28 02:31:25,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1629, PETRI_PLACES=337, PETRI_TRANSITIONS=205} [2024-06-28 02:31:25,161 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-28 02:31:25,161 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 205 transitions, 1629 flow [2024-06-28 02:31:25,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:25,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:25,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:25,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 02:31:25,162 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:25,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:25,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1080026850, now seen corresponding path program 1 times [2024-06-28 02:31:25,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:25,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384946835] [2024-06-28 02:31:25,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:25,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:27,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384946835] [2024-06-28 02:31:27,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384946835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:27,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:27,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:27,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313743760] [2024-06-28 02:31:27,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:27,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:27,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:27,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:27,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 205 transitions, 1629 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:27,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:27,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:27,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:27,730 INFO L124 PetriNetUnfolderBase]: 614/1265 cut-off events. [2024-06-28 02:31:27,730 INFO L125 PetriNetUnfolderBase]: For 238773/238773 co-relation queries the response was YES. [2024-06-28 02:31:27,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7636 conditions, 1265 events. 614/1265 cut-off events. For 238773/238773 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7382 event pairs, 179 based on Foata normal form. 8/1272 useless extension candidates. Maximal degree in co-relation 7497. Up to 1109 conditions per place. [2024-06-28 02:31:27,743 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 9 changer transitions 33/222 dead transitions. [2024-06-28 02:31:27,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 222 transitions, 2113 flow [2024-06-28 02:31:27,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-28 02:31:27,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-28 02:31:27,744 INFO L175 Difference]: Start difference. First operand has 337 places, 205 transitions, 1629 flow. Second operand 12 states and 114 transitions. [2024-06-28 02:31:27,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 222 transitions, 2113 flow [2024-06-28 02:31:28,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 222 transitions, 2055 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-28 02:31:28,247 INFO L231 Difference]: Finished difference. Result has 313 places, 185 transitions, 1430 flow [2024-06-28 02:31:28,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1430, PETRI_PLACES=313, PETRI_TRANSITIONS=185} [2024-06-28 02:31:28,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-28 02:31:28,247 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 185 transitions, 1430 flow [2024-06-28 02:31:28,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:28,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:28,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:28,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 02:31:28,248 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:28,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:28,248 INFO L85 PathProgramCache]: Analyzing trace with hash -850091848, now seen corresponding path program 6 times [2024-06-28 02:31:28,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:28,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357282833] [2024-06-28 02:31:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:28,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:30,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:30,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357282833] [2024-06-28 02:31:30,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357282833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:30,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:30,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:30,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144670280] [2024-06-28 02:31:30,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:30,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:30,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:30,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:30,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:30,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 185 transitions, 1430 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:30,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:30,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:30,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:31,185 INFO L124 PetriNetUnfolderBase]: 573/1164 cut-off events. [2024-06-28 02:31:31,185 INFO L125 PetriNetUnfolderBase]: For 195108/195108 co-relation queries the response was YES. [2024-06-28 02:31:31,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6976 conditions, 1164 events. 573/1164 cut-off events. For 195108/195108 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6585 event pairs, 149 based on Foata normal form. 6/1169 useless extension candidates. Maximal degree in co-relation 6845. Up to 880 conditions per place. [2024-06-28 02:31:31,195 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 143 selfloop transitions, 44 changer transitions 18/207 dead transitions. [2024-06-28 02:31:31,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 207 transitions, 1914 flow [2024-06-28 02:31:31,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:31:31,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:31:31,196 INFO L175 Difference]: Start difference. First operand has 313 places, 185 transitions, 1430 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:31:31,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 207 transitions, 1914 flow [2024-06-28 02:31:31,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 207 transitions, 1810 flow, removed 16 selfloop flow, removed 15 redundant places. [2024-06-28 02:31:31,748 INFO L231 Difference]: Finished difference. Result has 289 places, 174 transitions, 1341 flow [2024-06-28 02:31:31,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1341, PETRI_PLACES=289, PETRI_TRANSITIONS=174} [2024-06-28 02:31:31,749 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-28 02:31:31,749 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 174 transitions, 1341 flow [2024-06-28 02:31:31,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:31,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:31,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:31,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 02:31:31,750 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:31,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:31,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1078165978, now seen corresponding path program 7 times [2024-06-28 02:31:31,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:31,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737433142] [2024-06-28 02:31:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:31,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:33,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:33,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737433142] [2024-06-28 02:31:33,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737433142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:33,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:33,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:33,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445488694] [2024-06-28 02:31:33,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:33,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:33,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:33,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:33,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:33,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:33,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 174 transitions, 1341 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:33,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:33,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:33,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:34,231 INFO L124 PetriNetUnfolderBase]: 547/1114 cut-off events. [2024-06-28 02:31:34,232 INFO L125 PetriNetUnfolderBase]: For 173238/173238 co-relation queries the response was YES. [2024-06-28 02:31:34,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6498 conditions, 1114 events. 547/1114 cut-off events. For 173238/173238 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6232 event pairs, 141 based on Foata normal form. 6/1119 useless extension candidates. Maximal degree in co-relation 6374. Up to 860 conditions per place. [2024-06-28 02:31:34,256 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 138 selfloop transitions, 36 changer transitions 21/197 dead transitions. [2024-06-28 02:31:34,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 197 transitions, 1789 flow [2024-06-28 02:31:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:34,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:34,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 02:31:34,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-28 02:31:34,257 INFO L175 Difference]: Start difference. First operand has 289 places, 174 transitions, 1341 flow. Second operand 12 states and 126 transitions. [2024-06-28 02:31:34,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 197 transitions, 1789 flow [2024-06-28 02:31:34,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 197 transitions, 1689 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-28 02:31:34,831 INFO L231 Difference]: Finished difference. Result has 280 places, 164 transitions, 1242 flow [2024-06-28 02:31:34,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1242, PETRI_PLACES=280, PETRI_TRANSITIONS=164} [2024-06-28 02:31:34,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-28 02:31:34,832 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 164 transitions, 1242 flow [2024-06-28 02:31:34,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:34,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:34,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:34,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 02:31:34,832 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:34,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1268920874, now seen corresponding path program 8 times [2024-06-28 02:31:34,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:34,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744672759] [2024-06-28 02:31:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:34,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:36,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:36,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744672759] [2024-06-28 02:31:36,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744672759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:36,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:36,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:36,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292761113] [2024-06-28 02:31:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:36,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:36,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:36,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:36,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:36,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:36,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 164 transitions, 1242 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:36,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:36,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:36,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:37,355 INFO L124 PetriNetUnfolderBase]: 502/1023 cut-off events. [2024-06-28 02:31:37,356 INFO L125 PetriNetUnfolderBase]: For 135728/135728 co-relation queries the response was YES. [2024-06-28 02:31:37,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5523 conditions, 1023 events. 502/1023 cut-off events. For 135728/135728 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5603 event pairs, 128 based on Foata normal form. 6/1028 useless extension candidates. Maximal degree in co-relation 5402. Up to 831 conditions per place. [2024-06-28 02:31:37,364 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 135 selfloop transitions, 36 changer transitions 13/186 dead transitions. [2024-06-28 02:31:37,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 186 transitions, 1662 flow [2024-06-28 02:31:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 02:31:37,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-28 02:31:37,365 INFO L175 Difference]: Start difference. First operand has 280 places, 164 transitions, 1242 flow. Second operand 12 states and 125 transitions. [2024-06-28 02:31:37,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 186 transitions, 1662 flow [2024-06-28 02:31:37,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 186 transitions, 1580 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:37,708 INFO L231 Difference]: Finished difference. Result has 271 places, 159 transitions, 1207 flow [2024-06-28 02:31:37,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1207, PETRI_PLACES=271, PETRI_TRANSITIONS=159} [2024-06-28 02:31:37,708 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-28 02:31:37,708 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 159 transitions, 1207 flow [2024-06-28 02:31:37,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:37,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:37,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:37,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 02:31:37,709 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:37,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1921158446, now seen corresponding path program 9 times [2024-06-28 02:31:37,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:37,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175909635] [2024-06-28 02:31:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:37,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:39,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:39,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175909635] [2024-06-28 02:31:39,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175909635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:39,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:39,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:39,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348492609] [2024-06-28 02:31:39,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:39,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:39,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:39,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:39,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:40,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:40,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 159 transitions, 1207 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:40,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:40,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:40,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:40,582 INFO L124 PetriNetUnfolderBase]: 486/995 cut-off events. [2024-06-28 02:31:40,582 INFO L125 PetriNetUnfolderBase]: For 124588/124588 co-relation queries the response was YES. [2024-06-28 02:31:40,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5343 conditions, 995 events. 486/995 cut-off events. For 124588/124588 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5418 event pairs, 126 based on Foata normal form. 6/1000 useless extension candidates. Maximal degree in co-relation 5226. Up to 811 conditions per place. [2024-06-28 02:31:40,591 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 32 changer transitions 16/181 dead transitions. [2024-06-28 02:31:40,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 181 transitions, 1617 flow [2024-06-28 02:31:40,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 02:31:40,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-28 02:31:40,592 INFO L175 Difference]: Start difference. First operand has 271 places, 159 transitions, 1207 flow. Second operand 12 states and 124 transitions. [2024-06-28 02:31:40,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 181 transitions, 1617 flow [2024-06-28 02:31:40,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 181 transitions, 1539 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:31:40,857 INFO L231 Difference]: Finished difference. Result has 265 places, 153 transitions, 1164 flow [2024-06-28 02:31:40,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1164, PETRI_PLACES=265, PETRI_TRANSITIONS=153} [2024-06-28 02:31:40,857 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-28 02:31:40,857 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 153 transitions, 1164 flow [2024-06-28 02:31:40,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:40,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:40,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:40,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 02:31:40,858 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:40,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:40,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1273562504, now seen corresponding path program 10 times [2024-06-28 02:31:40,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:40,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845169887] [2024-06-28 02:31:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:40,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:42,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:42,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845169887] [2024-06-28 02:31:42,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845169887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:42,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:42,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849975174] [2024-06-28 02:31:42,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:42,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:42,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:42,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:42,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 153 transitions, 1164 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:42,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:42,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:42,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:43,332 INFO L124 PetriNetUnfolderBase]: 466/959 cut-off events. [2024-06-28 02:31:43,332 INFO L125 PetriNetUnfolderBase]: For 119180/119180 co-relation queries the response was YES. [2024-06-28 02:31:43,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5177 conditions, 959 events. 466/959 cut-off events. For 119180/119180 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5176 event pairs, 122 based on Foata normal form. 6/964 useless extension candidates. Maximal degree in co-relation 5062. Up to 783 conditions per place. [2024-06-28 02:31:43,339 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 22 changer transitions 26/175 dead transitions. [2024-06-28 02:31:43,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 175 transitions, 1562 flow [2024-06-28 02:31:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 02:31:43,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-28 02:31:43,340 INFO L175 Difference]: Start difference. First operand has 265 places, 153 transitions, 1164 flow. Second operand 12 states and 123 transitions. [2024-06-28 02:31:43,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 175 transitions, 1562 flow [2024-06-28 02:31:43,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 175 transitions, 1486 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:43,590 INFO L231 Difference]: Finished difference. Result has 257 places, 140 transitions, 1029 flow [2024-06-28 02:31:43,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1029, PETRI_PLACES=257, PETRI_TRANSITIONS=140} [2024-06-28 02:31:43,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-28 02:31:43,592 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 140 transitions, 1029 flow [2024-06-28 02:31:43,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:43,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:43,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:43,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 02:31:43,592 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:43,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:43,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2105371836, now seen corresponding path program 11 times [2024-06-28 02:31:43,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:43,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769782205] [2024-06-28 02:31:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:43,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:45,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769782205] [2024-06-28 02:31:45,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769782205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:45,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:45,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:45,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335752967] [2024-06-28 02:31:45,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:45,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:45,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:45,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:45,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:45,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:45,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 140 transitions, 1029 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:45,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:45,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:45,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:46,542 INFO L124 PetriNetUnfolderBase]: 436/897 cut-off events. [2024-06-28 02:31:46,543 INFO L125 PetriNetUnfolderBase]: For 111254/111254 co-relation queries the response was YES. [2024-06-28 02:31:46,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4858 conditions, 897 events. 436/897 cut-off events. For 111254/111254 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4744 event pairs, 120 based on Foata normal form. 6/902 useless extension candidates. Maximal degree in co-relation 4746. Up to 747 conditions per place. [2024-06-28 02:31:46,550 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 21 changer transitions 14/158 dead transitions. [2024-06-28 02:31:46,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 158 transitions, 1381 flow [2024-06-28 02:31:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 02:31:46,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-28 02:31:46,551 INFO L175 Difference]: Start difference. First operand has 257 places, 140 transitions, 1029 flow. Second operand 11 states and 112 transitions. [2024-06-28 02:31:46,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 158 transitions, 1381 flow [2024-06-28 02:31:46,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 158 transitions, 1317 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-28 02:31:46,762 INFO L231 Difference]: Finished difference. Result has 242 places, 134 transitions, 982 flow [2024-06-28 02:31:46,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=982, PETRI_PLACES=242, PETRI_TRANSITIONS=134} [2024-06-28 02:31:46,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-28 02:31:46,762 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 134 transitions, 982 flow [2024-06-28 02:31:46,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:46,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:46,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:46,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 02:31:46,763 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:46,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash 492666492, now seen corresponding path program 12 times [2024-06-28 02:31:46,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:46,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708982505] [2024-06-28 02:31:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:46,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:48,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:48,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708982505] [2024-06-28 02:31:48,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708982505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:48,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:48,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:48,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222366907] [2024-06-28 02:31:48,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:48,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:48,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:48,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:48,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:48,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 134 transitions, 982 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:48,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:48,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:48,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:49,016 INFO L124 PetriNetUnfolderBase]: 416/861 cut-off events. [2024-06-28 02:31:49,017 INFO L125 PetriNetUnfolderBase]: For 96318/96318 co-relation queries the response was YES. [2024-06-28 02:31:49,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4600 conditions, 861 events. 416/861 cut-off events. For 96318/96318 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4519 event pairs, 116 based on Foata normal form. 6/866 useless extension candidates. Maximal degree in co-relation 4494. Up to 719 conditions per place. [2024-06-28 02:31:49,022 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 17 changer transitions 19/154 dead transitions. [2024-06-28 02:31:49,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 154 transitions, 1330 flow [2024-06-28 02:31:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:49,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 02:31:49,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-28 02:31:49,023 INFO L175 Difference]: Start difference. First operand has 242 places, 134 transitions, 982 flow. Second operand 12 states and 118 transitions. [2024-06-28 02:31:49,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 154 transitions, 1330 flow [2024-06-28 02:31:49,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 154 transitions, 1280 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:31:49,191 INFO L231 Difference]: Finished difference. Result has 236 places, 127 transitions, 931 flow [2024-06-28 02:31:49,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=931, PETRI_PLACES=236, PETRI_TRANSITIONS=127} [2024-06-28 02:31:49,191 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-28 02:31:49,191 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 127 transitions, 931 flow [2024-06-28 02:31:49,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:49,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:49,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:49,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 02:31:49,192 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:49,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:49,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2074304290, now seen corresponding path program 13 times [2024-06-28 02:31:49,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:49,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3275712] [2024-06-28 02:31:49,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:49,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:50,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:50,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3275712] [2024-06-28 02:31:50,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3275712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:50,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:50,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:50,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916720882] [2024-06-28 02:31:50,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:50,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:50,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:50,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:51,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:51,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 127 transitions, 931 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:51,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:51,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:51,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:51,472 INFO L124 PetriNetUnfolderBase]: 392/817 cut-off events. [2024-06-28 02:31:51,473 INFO L125 PetriNetUnfolderBase]: For 89234/89234 co-relation queries the response was YES. [2024-06-28 02:31:51,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4381 conditions, 817 events. 392/817 cut-off events. For 89234/89234 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4261 event pairs, 110 based on Foata normal form. 6/822 useless extension candidates. Maximal degree in co-relation 4278. Up to 683 conditions per place. [2024-06-28 02:31:51,478 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 8 changer transitions 33/147 dead transitions. [2024-06-28 02:31:51,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 147 transitions, 1265 flow [2024-06-28 02:31:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-28 02:31:51,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046875 [2024-06-28 02:31:51,480 INFO L175 Difference]: Start difference. First operand has 236 places, 127 transitions, 931 flow. Second operand 12 states and 117 transitions. [2024-06-28 02:31:51,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 147 transitions, 1265 flow [2024-06-28 02:31:51,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 147 transitions, 1221 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:31:51,616 INFO L231 Difference]: Finished difference. Result has 227 places, 111 transitions, 776 flow [2024-06-28 02:31:51,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=776, PETRI_PLACES=227, PETRI_TRANSITIONS=111} [2024-06-28 02:31:51,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-28 02:31:51,616 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 111 transitions, 776 flow [2024-06-28 02:31:51,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:51,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:51,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:51,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 02:31:51,617 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:51,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:51,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1122106056, now seen corresponding path program 14 times [2024-06-28 02:31:51,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:51,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629262143] [2024-06-28 02:31:51,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:51,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629262143] [2024-06-28 02:31:53,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629262143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:53,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:53,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:53,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833270824] [2024-06-28 02:31:53,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:53,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:53,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:53,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:53,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:53,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:53,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 111 transitions, 776 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:53,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:53,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:53,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:53,963 INFO L124 PetriNetUnfolderBase]: 351/726 cut-off events. [2024-06-28 02:31:53,963 INFO L125 PetriNetUnfolderBase]: For 79957/79957 co-relation queries the response was YES. [2024-06-28 02:31:53,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 726 events. 351/726 cut-off events. For 79957/79957 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3726 event pairs, 96 based on Foata normal form. 6/732 useless extension candidates. Maximal degree in co-relation 3836. Up to 610 conditions per place. [2024-06-28 02:31:53,969 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 21 changer transitions 13/130 dead transitions. [2024-06-28 02:31:53,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 130 transitions, 1076 flow [2024-06-28 02:31:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:53,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:53,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 02:31:53,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-28 02:31:53,970 INFO L175 Difference]: Start difference. First operand has 227 places, 111 transitions, 776 flow. Second operand 12 states and 116 transitions. [2024-06-28 02:31:53,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 130 transitions, 1076 flow [2024-06-28 02:31:54,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 130 transitions, 1014 flow, removed 11 selfloop flow, removed 20 redundant places. [2024-06-28 02:31:54,072 INFO L231 Difference]: Finished difference. Result has 200 places, 106 transitions, 726 flow [2024-06-28 02:31:54,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=726, PETRI_PLACES=200, PETRI_TRANSITIONS=106} [2024-06-28 02:31:54,073 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-28 02:31:54,073 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 106 transitions, 726 flow [2024-06-28 02:31:54,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:54,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:54,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:54,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 02:31:54,074 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:54,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:54,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1694900974, now seen corresponding path program 15 times [2024-06-28 02:31:54,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:54,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546811813] [2024-06-28 02:31:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:54,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:55,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:55,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546811813] [2024-06-28 02:31:55,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546811813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:55,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:55,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:31:55,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912379820] [2024-06-28 02:31:55,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:55,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:31:55,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:55,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:31:55,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:31:56,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:56,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 106 transitions, 726 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:56,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:56,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:56,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:56,521 INFO L124 PetriNetUnfolderBase]: 335/698 cut-off events. [2024-06-28 02:31:56,522 INFO L125 PetriNetUnfolderBase]: For 65358/65358 co-relation queries the response was YES. [2024-06-28 02:31:56,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3652 conditions, 698 events. 335/698 cut-off events. For 65358/65358 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3553 event pairs, 94 based on Foata normal form. 6/704 useless extension candidates. Maximal degree in co-relation 3564. Up to 582 conditions per place. [2024-06-28 02:31:56,526 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 17 changer transitions 17/125 dead transitions. [2024-06-28 02:31:56,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 125 transitions, 1014 flow [2024-06-28 02:31:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-28 02:31:56,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994791666666667 [2024-06-28 02:31:56,527 INFO L175 Difference]: Start difference. First operand has 200 places, 106 transitions, 726 flow. Second operand 12 states and 115 transitions. [2024-06-28 02:31:56,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 125 transitions, 1014 flow [2024-06-28 02:31:56,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 125 transitions, 958 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:56,669 INFO L231 Difference]: Finished difference. Result has 194 places, 99 transitions, 659 flow [2024-06-28 02:31:56,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=659, PETRI_PLACES=194, PETRI_TRANSITIONS=99} [2024-06-28 02:31:56,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-28 02:31:56,669 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 99 transitions, 659 flow [2024-06-28 02:31:56,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:56,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:56,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:56,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 02:31:56,670 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:56,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash 201272062, now seen corresponding path program 16 times [2024-06-28 02:31:56,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:56,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478738902] [2024-06-28 02:31:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:56,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:58,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:58,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478738902] [2024-06-28 02:31:58,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478738902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:58,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:58,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:58,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304304984] [2024-06-28 02:31:58,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:58,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:58,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:58,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:58,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:58,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 99 transitions, 659 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:58,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:58,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:58,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:58,607 INFO L124 PetriNetUnfolderBase]: 311/654 cut-off events. [2024-06-28 02:31:58,607 INFO L125 PetriNetUnfolderBase]: For 61406/61406 co-relation queries the response was YES. [2024-06-28 02:31:58,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 654 events. 311/654 cut-off events. For 61406/61406 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3279 event pairs, 92 based on Foata normal form. 6/660 useless extension candidates. Maximal degree in co-relation 3346. Up to 567 conditions per place. [2024-06-28 02:31:58,611 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 88 selfloop transitions, 11 changer transitions 17/118 dead transitions. [2024-06-28 02:31:58,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 118 transitions, 935 flow [2024-06-28 02:31:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-28 02:31:58,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-28 02:31:58,612 INFO L175 Difference]: Start difference. First operand has 194 places, 99 transitions, 659 flow. Second operand 12 states and 114 transitions. [2024-06-28 02:31:58,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 118 transitions, 935 flow [2024-06-28 02:31:58,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 118 transitions, 891 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:58,702 INFO L231 Difference]: Finished difference. Result has 185 places, 94 transitions, 598 flow [2024-06-28 02:31:58,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=598, PETRI_PLACES=185, PETRI_TRANSITIONS=94} [2024-06-28 02:31:58,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-28 02:31:58,702 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 94 transitions, 598 flow [2024-06-28 02:31:58,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:58,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:58,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:58,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 02:31:58,703 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:58,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1690432324, now seen corresponding path program 17 times [2024-06-28 02:31:58,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:58,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781586167] [2024-06-28 02:31:58,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:00,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:00,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781586167] [2024-06-28 02:32:00,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781586167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:00,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:00,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933491227] [2024-06-28 02:32:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:00,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:00,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:00,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:00,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:00,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 94 transitions, 598 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:00,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:00,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:00,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:01,218 INFO L124 PetriNetUnfolderBase]: 295/622 cut-off events. [2024-06-28 02:32:01,218 INFO L125 PetriNetUnfolderBase]: For 55708/55708 co-relation queries the response was YES. [2024-06-28 02:32:01,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 622 events. 295/622 cut-off events. For 55708/55708 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3080 event pairs, 86 based on Foata normal form. 6/628 useless extension candidates. Maximal degree in co-relation 3142. Up to 506 conditions per place. [2024-06-28 02:32:01,222 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 11 changer transitions 23/113 dead transitions. [2024-06-28 02:32:01,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 113 transitions, 862 flow [2024-06-28 02:32:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-28 02:32:01,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-28 02:32:01,223 INFO L175 Difference]: Start difference. First operand has 185 places, 94 transitions, 598 flow. Second operand 12 states and 114 transitions. [2024-06-28 02:32:01,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 113 transitions, 862 flow [2024-06-28 02:32:01,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 113 transitions, 828 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:01,316 INFO L231 Difference]: Finished difference. Result has 177 places, 84 transitions, 515 flow [2024-06-28 02:32:01,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=515, PETRI_PLACES=177, PETRI_TRANSITIONS=84} [2024-06-28 02:32:01,316 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-28 02:32:01,316 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 84 transitions, 515 flow [2024-06-28 02:32:01,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:01,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:01,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:01,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 02:32:01,317 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:01,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:01,317 INFO L85 PathProgramCache]: Analyzing trace with hash -716678128, now seen corresponding path program 18 times [2024-06-28 02:32:01,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:01,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661486311] [2024-06-28 02:32:01,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:01,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:03,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:03,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661486311] [2024-06-28 02:32:03,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661486311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:03,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:03,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:03,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710648926] [2024-06-28 02:32:03,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:03,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:03,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:03,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:03,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:03,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:03,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 84 transitions, 515 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:03,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:03,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:03,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:03,711 INFO L124 PetriNetUnfolderBase]: 265/560 cut-off events. [2024-06-28 02:32:03,711 INFO L125 PetriNetUnfolderBase]: For 55687/55687 co-relation queries the response was YES. [2024-06-28 02:32:03,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 560 events. 265/560 cut-off events. For 55687/55687 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2671 event pairs, 82 based on Foata normal form. 6/566 useless extension candidates. Maximal degree in co-relation 2930. Up to 448 conditions per place. [2024-06-28 02:32:03,715 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 16 changer transitions 10/102 dead transitions. [2024-06-28 02:32:03,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 102 transitions, 753 flow [2024-06-28 02:32:03,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-28 02:32:03,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994791666666667 [2024-06-28 02:32:03,716 INFO L175 Difference]: Start difference. First operand has 177 places, 84 transitions, 515 flow. Second operand 12 states and 115 transitions. [2024-06-28 02:32:03,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 102 transitions, 753 flow [2024-06-28 02:32:03,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 102 transitions, 719 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:32:03,779 INFO L231 Difference]: Finished difference. Result has 164 places, 80 transitions, 496 flow [2024-06-28 02:32:03,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=496, PETRI_PLACES=164, PETRI_TRANSITIONS=80} [2024-06-28 02:32:03,779 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-28 02:32:03,779 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 80 transitions, 496 flow [2024-06-28 02:32:03,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:03,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:03,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:03,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 02:32:03,780 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:03,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash -488603998, now seen corresponding path program 19 times [2024-06-28 02:32:03,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:03,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26373449] [2024-06-28 02:32:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:03,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:05,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26373449] [2024-06-28 02:32:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26373449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:05,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:05,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:32:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717714138] [2024-06-28 02:32:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:05,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:32:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:32:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:32:05,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:05,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 80 transitions, 496 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:05,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:05,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:05,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:05,914 INFO L124 PetriNetUnfolderBase]: 253/536 cut-off events. [2024-06-28 02:32:05,915 INFO L125 PetriNetUnfolderBase]: For 48570/48570 co-relation queries the response was YES. [2024-06-28 02:32:05,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2852 conditions, 536 events. 253/536 cut-off events. For 48570/48570 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2513 event pairs, 84 based on Foata normal form. 6/542 useless extension candidates. Maximal degree in co-relation 2780. Up to 444 conditions per place. [2024-06-28 02:32:05,918 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 70 selfloop transitions, 12 changer transitions 14/98 dead transitions. [2024-06-28 02:32:05,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 98 transitions, 726 flow [2024-06-28 02:32:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:05,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-28 02:32:05,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-28 02:32:05,919 INFO L175 Difference]: Start difference. First operand has 164 places, 80 transitions, 496 flow. Second operand 12 states and 114 transitions. [2024-06-28 02:32:05,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 98 transitions, 726 flow [2024-06-28 02:32:05,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 98 transitions, 686 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 02:32:05,978 INFO L231 Difference]: Finished difference. Result has 158 places, 74 transitions, 453 flow [2024-06-28 02:32:05,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=453, PETRI_PLACES=158, PETRI_TRANSITIONS=74} [2024-06-28 02:32:05,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-28 02:32:05,979 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 74 transitions, 453 flow [2024-06-28 02:32:05,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:05,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:05,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:05,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 02:32:05,979 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:05,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash 858795972, now seen corresponding path program 20 times [2024-06-28 02:32:05,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:05,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040514006] [2024-06-28 02:32:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:05,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:07,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:07,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040514006] [2024-06-28 02:32:07,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040514006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:07,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:07,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:07,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094277713] [2024-06-28 02:32:07,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:07,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:07,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:07,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:07,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:08,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:08,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 74 transitions, 453 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:08,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:08,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:08,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:08,475 INFO L124 PetriNetUnfolderBase]: 227/478 cut-off events. [2024-06-28 02:32:08,475 INFO L125 PetriNetUnfolderBase]: For 34872/34872 co-relation queries the response was YES. [2024-06-28 02:32:08,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2303 conditions, 478 events. 227/478 cut-off events. For 34872/34872 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2137 event pairs, 71 based on Foata normal form. 6/484 useless extension candidates. Maximal degree in co-relation 2234. Up to 401 conditions per place. [2024-06-28 02:32:08,477 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 67 selfloop transitions, 11 changer transitions 11/91 dead transitions. [2024-06-28 02:32:08,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 91 transitions, 667 flow [2024-06-28 02:32:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-28 02:32:08,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2890625 [2024-06-28 02:32:08,478 INFO L175 Difference]: Start difference. First operand has 158 places, 74 transitions, 453 flow. Second operand 12 states and 111 transitions. [2024-06-28 02:32:08,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 91 transitions, 667 flow [2024-06-28 02:32:08,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 91 transitions, 631 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-28 02:32:08,514 INFO L231 Difference]: Finished difference. Result has 148 places, 71 transitions, 427 flow [2024-06-28 02:32:08,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=427, PETRI_PLACES=148, PETRI_TRANSITIONS=71} [2024-06-28 02:32:08,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-28 02:32:08,515 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 71 transitions, 427 flow [2024-06-28 02:32:08,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:08,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:08,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:08,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 02:32:08,516 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:08,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1147788072, now seen corresponding path program 21 times [2024-06-28 02:32:08,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:08,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879101059] [2024-06-28 02:32:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:08,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:10,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:10,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879101059] [2024-06-28 02:32:10,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879101059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:10,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:10,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:32:10,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273874167] [2024-06-28 02:32:10,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:10,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:32:10,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:10,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:32:10,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:32:10,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:10,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 71 transitions, 427 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:10,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:10,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:10,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:10,769 INFO L124 PetriNetUnfolderBase]: 202/427 cut-off events. [2024-06-28 02:32:10,769 INFO L125 PetriNetUnfolderBase]: For 21558/21558 co-relation queries the response was YES. [2024-06-28 02:32:10,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 427 events. 202/427 cut-off events. For 21558/21558 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1849 event pairs, 62 based on Foata normal form. 6/433 useless extension candidates. Maximal degree in co-relation 1724. Up to 365 conditions per place. [2024-06-28 02:32:10,772 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 8 changer transitions 16/86 dead transitions. [2024-06-28 02:32:10,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 86 transitions, 629 flow [2024-06-28 02:32:10,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 106 transitions. [2024-06-28 02:32:10,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2760416666666667 [2024-06-28 02:32:10,773 INFO L175 Difference]: Start difference. First operand has 148 places, 71 transitions, 427 flow. Second operand 12 states and 106 transitions. [2024-06-28 02:32:10,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 86 transitions, 629 flow [2024-06-28 02:32:10,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 86 transitions, 601 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:10,802 INFO L231 Difference]: Finished difference. Result has 143 places, 66 transitions, 390 flow [2024-06-28 02:32:10,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=390, PETRI_PLACES=143, PETRI_TRANSITIONS=66} [2024-06-28 02:32:10,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-28 02:32:10,802 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 66 transitions, 390 flow [2024-06-28 02:32:10,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:10,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:10,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:10,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 02:32:10,803 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:10,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:10,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1497652608, now seen corresponding path program 22 times [2024-06-28 02:32:10,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:10,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467837280] [2024-06-28 02:32:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:10,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:12,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:12,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467837280] [2024-06-28 02:32:12,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467837280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:12,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:12,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:32:12,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448521409] [2024-06-28 02:32:12,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:12,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:32:12,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:12,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:32:12,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:32:12,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:12,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 66 transitions, 390 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:12,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:12,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:12,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:12,407 INFO L124 PetriNetUnfolderBase]: 191/402 cut-off events. [2024-06-28 02:32:12,407 INFO L125 PetriNetUnfolderBase]: For 19818/19818 co-relation queries the response was YES. [2024-06-28 02:32:12,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 402 events. 191/402 cut-off events. For 19818/19818 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1672 event pairs, 54 based on Foata normal form. 6/408 useless extension candidates. Maximal degree in co-relation 1616. Up to 245 conditions per place. [2024-06-28 02:32:12,409 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 20 changer transitions 11/85 dead transitions. [2024-06-28 02:32:12,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 85 transitions, 602 flow [2024-06-28 02:32:12,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:32:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:32:12,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 02:32:12,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-28 02:32:12,410 INFO L175 Difference]: Start difference. First operand has 143 places, 66 transitions, 390 flow. Second operand 11 states and 113 transitions. [2024-06-28 02:32:12,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 85 transitions, 602 flow [2024-06-28 02:32:12,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 85 transitions, 576 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:12,433 INFO L231 Difference]: Finished difference. Result has 132 places, 62 transitions, 386 flow [2024-06-28 02:32:12,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=386, PETRI_PLACES=132, PETRI_TRANSITIONS=62} [2024-06-28 02:32:12,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-28 02:32:12,434 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 62 transitions, 386 flow [2024-06-28 02:32:12,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:12,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:12,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:12,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 02:32:12,434 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:12,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash 858622992, now seen corresponding path program 23 times [2024-06-28 02:32:12,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:12,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584788804] [2024-06-28 02:32:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:12,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:14,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:14,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584788804] [2024-06-28 02:32:14,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584788804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:14,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:14,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:14,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821677744] [2024-06-28 02:32:14,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:14,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:14,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:14,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:14,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:14,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:14,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 62 transitions, 386 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:14,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:14,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:14,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:14,902 INFO L124 PetriNetUnfolderBase]: 179/378 cut-off events. [2024-06-28 02:32:14,902 INFO L125 PetriNetUnfolderBase]: For 16630/16630 co-relation queries the response was YES. [2024-06-28 02:32:14,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1592 conditions, 378 events. 179/378 cut-off events. For 16630/16630 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1547 event pairs, 54 based on Foata normal form. 6/384 useless extension candidates. Maximal degree in co-relation 1534. Up to 301 conditions per place. [2024-06-28 02:32:14,904 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 54 selfloop transitions, 9 changer transitions 14/79 dead transitions. [2024-06-28 02:32:14,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 79 transitions, 576 flow [2024-06-28 02:32:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-28 02:32:14,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2864583333333333 [2024-06-28 02:32:14,905 INFO L175 Difference]: Start difference. First operand has 132 places, 62 transitions, 386 flow. Second operand 12 states and 110 transitions. [2024-06-28 02:32:14,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 79 transitions, 576 flow [2024-06-28 02:32:14,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 79 transitions, 528 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:32:14,925 INFO L231 Difference]: Finished difference. Result has 127 places, 58 transitions, 341 flow [2024-06-28 02:32:14,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=341, PETRI_PLACES=127, PETRI_TRANSITIONS=58} [2024-06-28 02:32:14,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-28 02:32:14,925 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 58 transitions, 341 flow [2024-06-28 02:32:14,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:14,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:14,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:14,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 02:32:14,926 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:14,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:14,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2075233114, now seen corresponding path program 24 times [2024-06-28 02:32:14,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:14,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686404429] [2024-06-28 02:32:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:14,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:16,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:16,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:16,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686404429] [2024-06-28 02:32:16,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686404429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:16,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:16,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:16,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215141686] [2024-06-28 02:32:16,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:16,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:16,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:16,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:16,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:16,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:16,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 58 transitions, 341 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:16,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:16,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:16,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:17,104 INFO L124 PetriNetUnfolderBase]: 165/352 cut-off events. [2024-06-28 02:32:17,104 INFO L125 PetriNetUnfolderBase]: For 14358/14358 co-relation queries the response was YES. [2024-06-28 02:32:17,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 352 events. 165/352 cut-off events. For 14358/14358 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1414 event pairs, 50 based on Foata normal form. 6/358 useless extension candidates. Maximal degree in co-relation 1400. Up to 275 conditions per place. [2024-06-28 02:32:17,106 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 49 selfloop transitions, 7 changer transitions 17/75 dead transitions. [2024-06-28 02:32:17,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 75 transitions, 523 flow [2024-06-28 02:32:17,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-28 02:32:17,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2838541666666667 [2024-06-28 02:32:17,110 INFO L175 Difference]: Start difference. First operand has 127 places, 58 transitions, 341 flow. Second operand 12 states and 109 transitions. [2024-06-28 02:32:17,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 75 transitions, 523 flow [2024-06-28 02:32:17,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 75 transitions, 497 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:17,126 INFO L231 Difference]: Finished difference. Result has 121 places, 53 transitions, 310 flow [2024-06-28 02:32:17,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=310, PETRI_PLACES=121, PETRI_TRANSITIONS=53} [2024-06-28 02:32:17,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-28 02:32:17,126 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 53 transitions, 310 flow [2024-06-28 02:32:17,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:17,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:17,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:17,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 02:32:17,127 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:17,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1964410594, now seen corresponding path program 25 times [2024-06-28 02:32:17,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:17,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805741322] [2024-06-28 02:32:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:17,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:19,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:19,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:19,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805741322] [2024-06-28 02:32:19,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805741322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:19,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:19,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:19,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422101849] [2024-06-28 02:32:19,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:19,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:19,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:19,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:19,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:19,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 53 transitions, 310 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:19,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:19,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:19,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:19,754 INFO L124 PetriNetUnfolderBase]: 147/318 cut-off events. [2024-06-28 02:32:19,754 INFO L125 PetriNetUnfolderBase]: For 12278/12278 co-relation queries the response was YES. [2024-06-28 02:32:19,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 318 events. 147/318 cut-off events. For 12278/12278 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1220 event pairs, 44 based on Foata normal form. 6/324 useless extension candidates. Maximal degree in co-relation 1270. Up to 241 conditions per place. [2024-06-28 02:32:19,755 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 41 selfloop transitions, 4 changer transitions 21/68 dead transitions. [2024-06-28 02:32:19,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 68 transitions, 474 flow [2024-06-28 02:32:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:32:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:32:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 02:32:19,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2840909090909091 [2024-06-28 02:32:19,756 INFO L175 Difference]: Start difference. First operand has 121 places, 53 transitions, 310 flow. Second operand 11 states and 100 transitions. [2024-06-28 02:32:19,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 68 transitions, 474 flow [2024-06-28 02:32:19,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 68 transitions, 450 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:19,769 INFO L231 Difference]: Finished difference. Result has 112 places, 45 transitions, 254 flow [2024-06-28 02:32:19,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=254, PETRI_PLACES=112, PETRI_TRANSITIONS=45} [2024-06-28 02:32:19,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-28 02:32:19,770 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 45 transitions, 254 flow [2024-06-28 02:32:19,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:19,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:19,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:19,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 02:32:19,770 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:19,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:19,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1816818796, now seen corresponding path program 26 times [2024-06-28 02:32:19,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:19,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671567346] [2024-06-28 02:32:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:19,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:21,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:21,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671567346] [2024-06-28 02:32:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671567346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:21,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:21,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:32:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481428660] [2024-06-28 02:32:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:21,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:32:21,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:32:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:32:21,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:21,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 45 transitions, 254 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:21,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:21,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:21,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:21,604 INFO L124 PetriNetUnfolderBase]: 110/239 cut-off events. [2024-06-28 02:32:21,605 INFO L125 PetriNetUnfolderBase]: For 6516/6516 co-relation queries the response was YES. [2024-06-28 02:32:21,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 239 events. 110/239 cut-off events. For 6516/6516 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 816 event pairs, 23 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 820. Up to 124 conditions per place. [2024-06-28 02:32:21,606 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 36 selfloop transitions, 14 changer transitions 11/63 dead transitions. [2024-06-28 02:32:21,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 63 transitions, 418 flow [2024-06-28 02:32:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-28 02:32:21,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2864583333333333 [2024-06-28 02:32:21,607 INFO L175 Difference]: Start difference. First operand has 112 places, 45 transitions, 254 flow. Second operand 12 states and 110 transitions. [2024-06-28 02:32:21,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 63 transitions, 418 flow [2024-06-28 02:32:21,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 63 transitions, 388 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-28 02:32:21,613 INFO L231 Difference]: Finished difference. Result has 98 places, 42 transitions, 244 flow [2024-06-28 02:32:21,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=244, PETRI_PLACES=98, PETRI_TRANSITIONS=42} [2024-06-28 02:32:21,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-28 02:32:21,613 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 42 transitions, 244 flow [2024-06-28 02:32:21,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:21,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:21,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:21,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 02:32:21,614 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:21,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1725726738, now seen corresponding path program 27 times [2024-06-28 02:32:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:21,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137599323] [2024-06-28 02:32:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:21,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:23,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:23,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137599323] [2024-06-28 02:32:23,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137599323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:23,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:23,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:23,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459488782] [2024-06-28 02:32:23,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:23,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:23,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:23,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:23,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:23,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:23,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 42 transitions, 244 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:23,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:23,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:23,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:23,752 INFO L124 PetriNetUnfolderBase]: 100/221 cut-off events. [2024-06-28 02:32:23,752 INFO L125 PetriNetUnfolderBase]: For 4392/4392 co-relation queries the response was YES. [2024-06-28 02:32:23,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 221 events. 100/221 cut-off events. For 4392/4392 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 728 event pairs, 21 based on Foata normal form. 6/227 useless extension candidates. Maximal degree in co-relation 748. Up to 106 conditions per place. [2024-06-28 02:32:23,753 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 10 changer transitions 18/60 dead transitions. [2024-06-28 02:32:23,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 60 transitions, 398 flow [2024-06-28 02:32:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:23,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-28 02:32:23,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2838541666666667 [2024-06-28 02:32:23,754 INFO L175 Difference]: Start difference. First operand has 98 places, 42 transitions, 244 flow. Second operand 12 states and 109 transitions. [2024-06-28 02:32:23,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 60 transitions, 398 flow [2024-06-28 02:32:23,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 60 transitions, 364 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:23,758 INFO L231 Difference]: Finished difference. Result has 93 places, 36 transitions, 203 flow [2024-06-28 02:32:23,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=203, PETRI_PLACES=93, PETRI_TRANSITIONS=36} [2024-06-28 02:32:23,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-28 02:32:23,758 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 36 transitions, 203 flow [2024-06-28 02:32:23,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:23,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:23,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:23,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-28 02:32:23,759 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:23,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:23,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1087066830, now seen corresponding path program 28 times [2024-06-28 02:32:23,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:23,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153621698] [2024-06-28 02:32:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:23,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:25,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:25,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153621698] [2024-06-28 02:32:25,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153621698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:25,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:25,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:32:25,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773611138] [2024-06-28 02:32:25,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:25,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:32:25,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:32:25,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:32:25,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:25,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 36 transitions, 203 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:25,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:25,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:25,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:26,033 INFO L124 PetriNetUnfolderBase]: 85/188 cut-off events. [2024-06-28 02:32:26,033 INFO L125 PetriNetUnfolderBase]: For 3756/3756 co-relation queries the response was YES. [2024-06-28 02:32:26,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 188 events. 85/188 cut-off events. For 3756/3756 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 565 event pairs, 27 based on Foata normal form. 6/194 useless extension candidates. Maximal degree in co-relation 640. Up to 96 conditions per place. [2024-06-28 02:32:26,034 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 27 selfloop transitions, 10 changer transitions 12/51 dead transitions. [2024-06-28 02:32:26,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 51 transitions, 333 flow [2024-06-28 02:32:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:32:26,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:32:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-28 02:32:26,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28125 [2024-06-28 02:32:26,035 INFO L175 Difference]: Start difference. First operand has 93 places, 36 transitions, 203 flow. Second operand 11 states and 99 transitions. [2024-06-28 02:32:26,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 51 transitions, 333 flow [2024-06-28 02:32:26,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 51 transitions, 301 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:32:26,038 INFO L231 Difference]: Finished difference. Result has 82 places, 32 transitions, 174 flow [2024-06-28 02:32:26,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=174, PETRI_PLACES=82, PETRI_TRANSITIONS=32} [2024-06-28 02:32:26,039 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-28 02:32:26,039 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 32 transitions, 174 flow [2024-06-28 02:32:26,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:26,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:26,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:26,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-28 02:32:26,039 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:26,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1315140960, now seen corresponding path program 29 times [2024-06-28 02:32:26,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:26,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135695705] [2024-06-28 02:32:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:26,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:27,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135695705] [2024-06-28 02:32:27,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135695705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:27,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:27,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:27,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445356351] [2024-06-28 02:32:27,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:27,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:27,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:27,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:27,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:27,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:27,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 32 transitions, 174 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:27,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:27,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:27,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:28,260 INFO L124 PetriNetUnfolderBase]: 73/164 cut-off events. [2024-06-28 02:32:28,260 INFO L125 PetriNetUnfolderBase]: For 2406/2406 co-relation queries the response was YES. [2024-06-28 02:32:28,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 164 events. 73/164 cut-off events. For 2406/2406 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 459 event pairs, 19 based on Foata normal form. 6/170 useless extension candidates. Maximal degree in co-relation 546. Up to 78 conditions per place. [2024-06-28 02:32:28,261 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 23 selfloop transitions, 8 changer transitions 16/49 dead transitions. [2024-06-28 02:32:28,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 49 transitions, 304 flow [2024-06-28 02:32:28,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-06-28 02:32:28,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2734375 [2024-06-28 02:32:28,262 INFO L175 Difference]: Start difference. First operand has 82 places, 32 transitions, 174 flow. Second operand 12 states and 105 transitions. [2024-06-28 02:32:28,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 49 transitions, 304 flow [2024-06-28 02:32:28,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 49 transitions, 276 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:28,264 INFO L231 Difference]: Finished difference. Result has 77 places, 27 transitions, 141 flow [2024-06-28 02:32:28,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=141, PETRI_PLACES=77, PETRI_TRANSITIONS=27} [2024-06-28 02:32:28,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-28 02:32:28,264 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 27 transitions, 141 flow [2024-06-28 02:32:28,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:28,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:28,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:28,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-28 02:32:28,265 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:28,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:28,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1096438142, now seen corresponding path program 30 times [2024-06-28 02:32:28,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:28,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974603598] [2024-06-28 02:32:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:28,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:30,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:30,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974603598] [2024-06-28 02:32:30,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974603598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:30,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:30,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:32:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586001486] [2024-06-28 02:32:30,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:30,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:32:30,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:30,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:32:30,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:32:30,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:30,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 27 transitions, 141 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:30,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:30,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:30,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:30,592 INFO L124 PetriNetUnfolderBase]: 57/132 cut-off events. [2024-06-28 02:32:30,592 INFO L125 PetriNetUnfolderBase]: For 1730/1730 co-relation queries the response was YES. [2024-06-28 02:32:30,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 132 events. 57/132 cut-off events. For 1730/1730 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 323 event pairs, 17 based on Foata normal form. 6/138 useless extension candidates. Maximal degree in co-relation 438. Up to 60 conditions per place. [2024-06-28 02:32:30,593 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 19 selfloop transitions, 7 changer transitions 14/42 dead transitions. [2024-06-28 02:32:30,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 42 transitions, 253 flow [2024-06-28 02:32:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:30,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 101 transitions. [2024-06-28 02:32:30,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2630208333333333 [2024-06-28 02:32:30,593 INFO L175 Difference]: Start difference. First operand has 77 places, 27 transitions, 141 flow. Second operand 12 states and 101 transitions. [2024-06-28 02:32:30,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 42 transitions, 253 flow [2024-06-28 02:32:30,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 42 transitions, 225 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 02:32:30,595 INFO L231 Difference]: Finished difference. Result has 68 places, 23 transitions, 112 flow [2024-06-28 02:32:30,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=112, PETRI_PLACES=68, PETRI_TRANSITIONS=23} [2024-06-28 02:32:30,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-28 02:32:30,595 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 23 transitions, 112 flow [2024-06-28 02:32:30,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:30,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:30,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:30,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-28 02:32:30,596 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:30,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1091969492, now seen corresponding path program 31 times [2024-06-28 02:32:30,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:30,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157259404] [2024-06-28 02:32:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:32,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:32,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:32,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157259404] [2024-06-28 02:32:32,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157259404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:32,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:32,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:32,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085620180] [2024-06-28 02:32:32,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:32,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:32,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:32,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:32,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:32,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:32,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 23 transitions, 112 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:32,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:32,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:32,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:32,529 INFO L124 PetriNetUnfolderBase]: 28/73 cut-off events. [2024-06-28 02:32:32,529 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-06-28 02:32:32,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 73 events. 28/73 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 6/79 useless extension candidates. Maximal degree in co-relation 190. Up to 24 conditions per place. [2024-06-28 02:32:32,530 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-28 02:32:32,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 33 transitions, 168 flow [2024-06-28 02:32:32,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 92 transitions. [2024-06-28 02:32:32,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23958333333333334 [2024-06-28 02:32:32,530 INFO L175 Difference]: Start difference. First operand has 68 places, 23 transitions, 112 flow. Second operand 12 states and 92 transitions. [2024-06-28 02:32:32,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 33 transitions, 168 flow [2024-06-28 02:32:32,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 33 transitions, 134 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-28 02:32:32,531 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-06-28 02:32:32,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-06-28 02:32:32,531 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-28 02:32:32,531 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-06-28 02:32:32,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:32,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 02:32:32,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 02:32:32,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 02:32:32,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 02:32:32,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-28 02:32:32,534 INFO L445 BasicCegarLoop]: Path program histogram: [36, 31, 28, 22, 19, 19, 14, 11, 8, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:32,536 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:32:32,537 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:32:32,539 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 02:32:32,539 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 02:32:32,540 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:32:32 BasicIcfg [2024-06-28 02:32:32,540 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:32:32,540 INFO L158 Benchmark]: Toolchain (without parser) took 629444.50ms. Allocated memory was 178.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 102.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 578.9MB. Max. memory is 16.1GB. [2024-06-28 02:32:32,540 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:32:32,540 INFO L158 Benchmark]: Witness Parser took 0.41ms. Allocated memory is still 178.3MB. Free memory is still 108.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:32:32,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.66ms. Allocated memory is still 178.3MB. Free memory was 102.2MB in the beginning and 120.6MB in the end (delta: -18.3MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2024-06-28 02:32:32,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.43ms. Allocated memory is still 178.3MB. Free memory was 120.6MB in the beginning and 116.5MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 02:32:32,541 INFO L158 Benchmark]: Boogie Preprocessor took 47.54ms. Allocated memory is still 178.3MB. Free memory was 116.5MB in the beginning and 112.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 02:32:32,541 INFO L158 Benchmark]: RCFGBuilder took 645.90ms. Allocated memory is still 178.3MB. Free memory was 112.3MB in the beginning and 112.6MB in the end (delta: -319.0kB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2024-06-28 02:32:32,541 INFO L158 Benchmark]: TraceAbstraction took 628070.17ms. Allocated memory was 178.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 111.6MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 586.0MB. Max. memory is 16.1GB. [2024-06-28 02:32:32,542 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.41ms. Allocated memory is still 178.3MB. Free memory is still 108.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.66ms. Allocated memory is still 178.3MB. Free memory was 102.2MB in the beginning and 120.6MB in the end (delta: -18.3MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.43ms. Allocated memory is still 178.3MB. Free memory was 120.6MB in the beginning and 116.5MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.54ms. Allocated memory is still 178.3MB. Free memory was 116.5MB in the beginning and 112.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 645.90ms. Allocated memory is still 178.3MB. Free memory was 112.3MB in the beginning and 112.6MB in the end (delta: -319.0kB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * TraceAbstraction took 628070.17ms. Allocated memory was 178.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 111.6MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 586.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 838]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 839]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 628.0s, OverallIterations: 245, TraceHistogramMax: 1, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 306.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14462 SdHoareTripleChecker+Valid, 75.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12581 mSDsluCounter, 9820 SdHoareTripleChecker+Invalid, 66.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8378 mSDsCounter, 4915 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127746 IncrementalHoareTripleChecker+Invalid, 132661 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4915 mSolverCounterUnsat, 1442 mSDtfsCounter, 127746 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3452 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3429 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9275 ImplicationChecksByTransitivity, 96.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4174occurred in iteration=143, InterpolantAutomatonStates: 2520, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 317.1s InterpolantComputationTime, 4278 NumberOfCodeBlocks, 4278 NumberOfCodeBlocksAsserted, 245 NumberOfCheckSat, 4033 ConstructedInterpolants, 0 QuantifiedInterpolants, 197764 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 245 InterpolantComputations, 245 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 02:32:32,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE