./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi002_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/rfi002_tso.i ./goblint.2024-05-21_14-57-05.files/protection/rfi002_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-bcb38a6-m [2024-06-04 14:05:49,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:05:50,073 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:05:50,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:05:50,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:05:50,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:05:50,134 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:05:50,135 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:05:50,135 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:05:50,139 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:05:50,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:05:50,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:05:50,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:05:50,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:05:50,142 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:05:50,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:05:50,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:05:50,143 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:05:50,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:05:50,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:05:50,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:05:50,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:05:50,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:05:50,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:05:50,145 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:05:50,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:05:50,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:05:50,145 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:05:50,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:05:50,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:05:50,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:05:50,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:05:50,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:50,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:05:50,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:05:50,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:05:50,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:05:50,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:05:50,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:05:50,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:05:50,149 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:05:50,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:05:50,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:05:50,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:05:50,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:05:50,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:05:50,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:05:50,449 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:05:50,450 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:05:50,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2024-06-04 14:05:51,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:05:51,893 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:05:51,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2024-06-04 14:05:51,920 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b57440f/38a6b46dd3d7467697d9d6ae471e48d8/FLAGd9e7be2c3 [2024-06-04 14:05:51,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b57440f/38a6b46dd3d7467697d9d6ae471e48d8 [2024-06-04 14:05:51,935 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:05:51,936 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:05:51,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi002_tso.yml/witness.yml [2024-06-04 14:05:52,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:05:52,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:05:52,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:52,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:05:52,109 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:05:52,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:51" (1/2) ... [2024-06-04 14:05:52,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663c7c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52, skipping insertion in model container [2024-06-04 14:05:52,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:51" (1/2) ... [2024-06-04 14:05:52,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@583b35b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52, skipping insertion in model container [2024-06-04 14:05:52,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:52" (2/2) ... [2024-06-04 14:05:52,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663c7c34 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52, skipping insertion in model container [2024-06-04 14:05:52,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:52" (2/2) ... [2024-06-04 14:05:52,114 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:05:52,205 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:05:52,207 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] (((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-04 14:05:52,207 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] (((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-04 14:05:52,208 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:05:52,208 INFO L106 edCorrectnessWitness]: ghost_update [L877-L877] multithreaded = 1; [2024-06-04 14:05:52,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:05:52,686 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:52,696 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:05:52,861 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:52,912 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:05:52,913 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52 WrapperNode [2024-06-04 14:05:52,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:52,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:52,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:05:52,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:05:52,920 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 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,957 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 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:53,009 INFO L138 Inliner]: procedures = 174, calls = 41, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 217 [2024-06-04 14:05:53,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:53,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:05:53,013 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:05:53,013 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:05:53,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:53,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:53,038 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:53,073 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]. [2024-06-04 14:05:53,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:53,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:53,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:53,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:53,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:53,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:53,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:05:53,099 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:05:53,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:05:53,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:05:53,100 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:53,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:53,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:05:53,129 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) [2024-06-04 14:05:53,155 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 [2024-06-04 14:05:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:05:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:05:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:05:53,170 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:05:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:05:53,170 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:05:53,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:05:53,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:05:53,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:05:53,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:05:53,173 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:05:53,320 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:05:53,323 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:05:53,851 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:05:53,852 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:05:54,086 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:05:54,086 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:05:54,086 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:54 BoogieIcfgContainer [2024-06-04 14:05:54,087 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:05:54,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:05:54,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:05:54,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:05:54,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:05:51" (1/4) ... [2024-06-04 14:05:54,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38518c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:05:54, skipping insertion in model container [2024-06-04 14:05:54,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:52" (2/4) ... [2024-06-04 14:05:54,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38518c09 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:05:54, skipping insertion in model container [2024-06-04 14:05:54,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (3/4) ... [2024-06-04 14:05:54,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38518c09 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:05:54, skipping insertion in model container [2024-06-04 14:05:54,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:54" (4/4) ... [2024-06-04 14:05:54,097 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2024-06-04 14:05:54,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:05:54,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 14:05:54,114 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:05:54,214 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:05:54,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-04 14:05:54,284 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-04 14:05:54,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:05:54,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:05:54,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-04 14:05:54,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-04 14:05:54,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:05:54,313 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;@4c87a925, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:05:54,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 14:05:54,319 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:05:54,319 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 14:05:54,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:05:54,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:54,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:05:54,320 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)] === [2024-06-04 14:05:54,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:54,351 INFO L85 PathProgramCache]: Analyzing trace with hash -385948990, now seen corresponding path program 1 times [2024-06-04 14:05:54,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:54,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637127437] [2024-06-04 14:05:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:54,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:56,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:56,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637127437] [2024-06-04 14:05:56,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637127437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:56,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:56,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:05:56,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336839483] [2024-06-04 14:05:56,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:56,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:05:56,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:05:56,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:05:56,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:05:56,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:56,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:56,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:05:56,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:56,690 INFO L124 PetriNetUnfolderBase]: 257/456 cut-off events. [2024-06-04 14:05:56,690 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-04 14:05:56,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 456 events. 257/456 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1660 event pairs, 163 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 916. Up to 447 conditions per place. [2024-06-04 14:05:56,697 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 26 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-04 14:05:56,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 129 flow [2024-06-04 14:05:56,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:05:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:05:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-04 14:05:56,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-06-04 14:05:56,711 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 49 transitions. [2024-06-04 14:05:56,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 129 flow [2024-06-04 14:05:56,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:56,716 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-04 14:05:56,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-04 14:05:56,721 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-04 14:05:56,721 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-04 14:05:56,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:56,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:56,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:56,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:05:56,722 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)] === [2024-06-04 14:05:56,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:56,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1529071119, now seen corresponding path program 1 times [2024-06-04 14:05:56,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:56,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452780488] [2024-06-04 14:05:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:58,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:58,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452780488] [2024-06-04 14:05:58,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452780488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:58,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:58,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:05:58,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33261258] [2024-06-04 14:05:58,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:58,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:05:58,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:58,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:05:58,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:05:58,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:05:58,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:58,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:58,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:05:58,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:58,419 INFO L124 PetriNetUnfolderBase]: 251/446 cut-off events. [2024-06-04 14:05:58,420 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-06-04 14:05:58,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 446 events. 251/446 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1600 event pairs, 115 based on Foata normal form. 4/448 useless extension candidates. Maximal degree in co-relation 1004. Up to 419 conditions per place. [2024-06-04 14:05:58,424 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 31 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-04 14:05:58,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 175 flow [2024-06-04 14:05:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:05:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:05:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-06-04 14:05:58,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:05:58,428 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 62 transitions. [2024-06-04 14:05:58,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 175 flow [2024-06-04 14:05:58,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:05:58,433 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-04 14:05:58,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-04 14:05:58,434 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-04 14:05:58,435 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-04 14:05:58,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:58,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:58,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:58,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:05:58,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:58,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1223434368, now seen corresponding path program 1 times [2024-06-04 14:05:58,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:58,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410939237] [2024-06-04 14:05:58,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:58,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:00,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:00,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410939237] [2024-06-04 14:06:00,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410939237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:00,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:00,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:06:00,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811421401] [2024-06-04 14:06:00,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:00,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:06:00,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:00,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:06:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:06:01,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:01,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 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) [2024-06-04 14:06:01,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:01,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:01,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:01,405 INFO L124 PetriNetUnfolderBase]: 245/436 cut-off events. [2024-06-04 14:06:01,405 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-06-04 14:06:01,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 436 events. 245/436 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1560 event pairs, 67 based on Foata normal form. 4/438 useless extension candidates. Maximal degree in co-relation 1080. Up to 391 conditions per place. [2024-06-04 14:06:01,409 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 36 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2024-06-04 14:06:01,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 227 flow [2024-06-04 14:06:01,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:06:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:06:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-04 14:06:01,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:06:01,411 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 75 transitions. [2024-06-04 14:06:01,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 227 flow [2024-06-04 14:06:01,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 218 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:06:01,414 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 123 flow [2024-06-04 14:06:01,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-04 14:06:01,415 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-04 14:06:01,415 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 123 flow [2024-06-04 14:06:01,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 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) [2024-06-04 14:06:01,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:01,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:01,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:06:01,416 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:01,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash 427293667, now seen corresponding path program 1 times [2024-06-04 14:06:01,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:01,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044170212] [2024-06-04 14:06:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:01,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:02,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:02,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044170212] [2024-06-04 14:06:02,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044170212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:02,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:02,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:06:02,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019110491] [2024-06-04 14:06:02,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:02,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:06:02,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:02,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:06:02,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:06:02,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:02,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:02,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:02,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:02,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:03,077 INFO L124 PetriNetUnfolderBase]: 243/433 cut-off events. [2024-06-04 14:06:03,079 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2024-06-04 14:06:03,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 433 events. 243/433 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1541 event pairs, 108 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1169. Up to 421 conditions per place. [2024-06-04 14:06:03,083 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 30 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2024-06-04 14:06:03,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 213 flow [2024-06-04 14:06:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:06:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:06:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-06-04 14:06:03,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:06:03,087 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 123 flow. Second operand 5 states and 58 transitions. [2024-06-04 14:06:03,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 213 flow [2024-06-04 14:06:03,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 198 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:03,090 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 135 flow [2024-06-04 14:06:03,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-06-04 14:06:03,092 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2024-06-04 14:06:03,092 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 135 flow [2024-06-04 14:06:03,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:03,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:03,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:03,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:06:03,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:03,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:03,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1100644319, now seen corresponding path program 1 times [2024-06-04 14:06:03,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:03,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254098171] [2024-06-04 14:06:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:03,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:06,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:06,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254098171] [2024-06-04 14:06:06,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254098171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:06,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:06,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:06:06,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959542702] [2024-06-04 14:06:06,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:06,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:06:06,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:06,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:06:06,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:06:06,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:06,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:06,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:06,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:06,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:06,577 INFO L124 PetriNetUnfolderBase]: 239/425 cut-off events. [2024-06-04 14:06:06,577 INFO L125 PetriNetUnfolderBase]: For 588/588 co-relation queries the response was YES. [2024-06-04 14:06:06,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 425 events. 239/425 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1485 event pairs, 41 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 1206. Up to 362 conditions per place. [2024-06-04 14:06:06,581 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 38 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-04 14:06:06,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 257 flow [2024-06-04 14:06:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:06:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:06:06,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-04 14:06:06,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-04 14:06:06,583 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 135 flow. Second operand 6 states and 82 transitions. [2024-06-04 14:06:06,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 257 flow [2024-06-04 14:06:06,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 246 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:06,586 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 136 flow [2024-06-04 14:06:06,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, 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=6, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-04 14:06:06,587 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-06-04 14:06:06,587 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 136 flow [2024-06-04 14:06:06,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:06,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:06,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:06,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:06:06,588 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)] === [2024-06-04 14:06:06,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash 330816690, now seen corresponding path program 1 times [2024-06-04 14:06:06,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:06,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715935105] [2024-06-04 14:06:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:06,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:08,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:08,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715935105] [2024-06-04 14:06:08,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715935105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:08,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:08,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:06:08,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122699191] [2024-06-04 14:06:08,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:08,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:06:08,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:08,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:06:08,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:06:08,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:08,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:08,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:08,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:08,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:08,617 INFO L124 PetriNetUnfolderBase]: 237/422 cut-off events. [2024-06-04 14:06:08,618 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2024-06-04 14:06:08,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 422 events. 237/422 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1484 event pairs, 103 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1263. Up to 407 conditions per place. [2024-06-04 14:06:08,622 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 30 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-04 14:06:08,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 234 flow [2024-06-04 14:06:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:06:08,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:06:08,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-04 14:06:08,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-04 14:06:08,625 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 136 flow. Second operand 6 states and 65 transitions. [2024-06-04 14:06:08,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 234 flow [2024-06-04 14:06:08,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 214 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:08,629 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 149 flow [2024-06-04 14:06:08,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-04 14:06:08,633 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2024-06-04 14:06:08,634 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 149 flow [2024-06-04 14:06:08,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:08,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:08,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:08,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:06:08,635 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)] === [2024-06-04 14:06:08,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:08,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1233867126, now seen corresponding path program 1 times [2024-06-04 14:06:08,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:08,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353786136] [2024-06-04 14:06:08,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:08,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:10,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:10,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353786136] [2024-06-04 14:06:10,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353786136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:10,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:10,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:06:10,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981640383] [2024-06-04 14:06:10,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:10,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:06:10,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:06:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:06:10,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:10,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:10,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:10,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:10,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:10,560 INFO L124 PetriNetUnfolderBase]: 243/433 cut-off events. [2024-06-04 14:06:10,561 INFO L125 PetriNetUnfolderBase]: For 1081/1081 co-relation queries the response was YES. [2024-06-04 14:06:10,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 433 events. 243/433 cut-off events. For 1081/1081 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1528 event pairs, 85 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 1353. Up to 399 conditions per place. [2024-06-04 14:06:10,563 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 36 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-04 14:06:10,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 279 flow [2024-06-04 14:06:10,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:06:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:06:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-04 14:06:10,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:06:10,565 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 149 flow. Second operand 6 states and 70 transitions. [2024-06-04 14:06:10,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 279 flow [2024-06-04 14:06:10,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 262 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:10,567 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 180 flow [2024-06-04 14:06:10,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-04 14:06:10,568 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2024-06-04 14:06:10,568 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 180 flow [2024-06-04 14:06:10,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:10,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:10,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:10,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:06:10,569 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)] === [2024-06-04 14:06:10,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:10,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1665375622, now seen corresponding path program 2 times [2024-06-04 14:06:10,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:10,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741171736] [2024-06-04 14:06:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:10,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:12,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:12,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741171736] [2024-06-04 14:06:12,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741171736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:12,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:12,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:06:12,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921285980] [2024-06-04 14:06:12,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:12,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:06:12,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:12,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:06:12,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:06:12,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:12,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 180 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:12,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:12,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:12,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:12,457 INFO L124 PetriNetUnfolderBase]: 244/435 cut-off events. [2024-06-04 14:06:12,458 INFO L125 PetriNetUnfolderBase]: For 1460/1463 co-relation queries the response was YES. [2024-06-04 14:06:12,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 435 events. 244/435 cut-off events. For 1460/1463 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1550 event pairs, 88 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1487. Up to 388 conditions per place. [2024-06-04 14:06:12,461 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 35 selfloop transitions, 14 changer transitions 0/51 dead transitions. [2024-06-04 14:06:12,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 340 flow [2024-06-04 14:06:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:06:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:06:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-04 14:06:12,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-04 14:06:12,462 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 180 flow. Second operand 6 states and 71 transitions. [2024-06-04 14:06:12,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 340 flow [2024-06-04 14:06:12,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 328 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 14:06:12,466 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 229 flow [2024-06-04 14:06:12,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-06-04 14:06:12,469 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-06-04 14:06:12,469 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 229 flow [2024-06-04 14:06:12,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:12,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:12,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:12,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:06:12,470 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)] === [2024-06-04 14:06:12,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:12,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1687591326, now seen corresponding path program 1 times [2024-06-04 14:06:12,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:12,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446369367] [2024-06-04 14:06:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:12,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:14,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:14,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446369367] [2024-06-04 14:06:14,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446369367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:14,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:14,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:14,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865306147] [2024-06-04 14:06:14,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:14,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:14,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:14,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:14,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:14,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:14,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 229 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:14,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:14,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:14,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:14,892 INFO L124 PetriNetUnfolderBase]: 242/431 cut-off events. [2024-06-04 14:06:14,893 INFO L125 PetriNetUnfolderBase]: For 1837/1837 co-relation queries the response was YES. [2024-06-04 14:06:14,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 431 events. 242/431 cut-off events. For 1837/1837 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1527 event pairs, 80 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1563. Up to 413 conditions per place. [2024-06-04 14:06:14,896 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 39 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-06-04 14:06:14,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 353 flow [2024-06-04 14:06:14,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:14,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-04 14:06:14,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31601731601731603 [2024-06-04 14:06:14,897 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 229 flow. Second operand 7 states and 73 transitions. [2024-06-04 14:06:14,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 353 flow [2024-06-04 14:06:14,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 338 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 14:06:14,901 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 253 flow [2024-06-04 14:06:14,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-06-04 14:06:14,902 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-06-04 14:06:14,902 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 253 flow [2024-06-04 14:06:14,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:14,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:14,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:14,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:06:14,903 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)] === [2024-06-04 14:06:14,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:14,903 INFO L85 PathProgramCache]: Analyzing trace with hash -35304038, now seen corresponding path program 1 times [2024-06-04 14:06:14,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:14,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950641471] [2024-06-04 14:06:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:16,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:16,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950641471] [2024-06-04 14:06:16,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950641471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:16,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:16,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:16,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902652618] [2024-06-04 14:06:16,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:16,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:16,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:16,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:16,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:16,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:16,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:16,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:16,962 INFO L124 PetriNetUnfolderBase]: 240/428 cut-off events. [2024-06-04 14:06:16,963 INFO L125 PetriNetUnfolderBase]: For 2146/2146 co-relation queries the response was YES. [2024-06-04 14:06:16,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 428 events. 240/428 cut-off events. For 2146/2146 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1512 event pairs, 79 based on Foata normal form. 1/427 useless extension candidates. Maximal degree in co-relation 1628. Up to 392 conditions per place. [2024-06-04 14:06:16,966 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 41 selfloop transitions, 11 changer transitions 0/54 dead transitions. [2024-06-04 14:06:16,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 383 flow [2024-06-04 14:06:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:06:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:06:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-04 14:06:16,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:06:16,969 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 253 flow. Second operand 6 states and 70 transitions. [2024-06-04 14:06:16,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 383 flow [2024-06-04 14:06:16,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 358 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:16,972 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 258 flow [2024-06-04 14:06:16,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-06-04 14:06:16,974 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-06-04 14:06:16,974 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 258 flow [2024-06-04 14:06:16,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:16,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:16,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:16,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:06:16,975 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)] === [2024-06-04 14:06:16,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash -119614989, now seen corresponding path program 1 times [2024-06-04 14:06:16,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:16,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106907420] [2024-06-04 14:06:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:16,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:18,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:18,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106907420] [2024-06-04 14:06:18,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106907420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:18,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:18,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:18,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499213291] [2024-06-04 14:06:18,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:18,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:18,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:18,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:18,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:18,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:18,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 258 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:18,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:18,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:18,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:19,089 INFO L124 PetriNetUnfolderBase]: 246/439 cut-off events. [2024-06-04 14:06:19,090 INFO L125 PetriNetUnfolderBase]: For 2642/2642 co-relation queries the response was YES. [2024-06-04 14:06:19,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 439 events. 246/439 cut-off events. For 2642/2642 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1567 event pairs, 82 based on Foata normal form. 2/438 useless extension candidates. Maximal degree in co-relation 1716. Up to 397 conditions per place. [2024-06-04 14:06:19,093 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 44 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-06-04 14:06:19,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 414 flow [2024-06-04 14:06:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 14:06:19,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2024-06-04 14:06:19,095 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 258 flow. Second operand 7 states and 79 transitions. [2024-06-04 14:06:19,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 414 flow [2024-06-04 14:06:19,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 387 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:19,100 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 276 flow [2024-06-04 14:06:19,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-06-04 14:06:19,101 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2024-06-04 14:06:19,101 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 276 flow [2024-06-04 14:06:19,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:19,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:19,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:19,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:06:19,102 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)] === [2024-06-04 14:06:19,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:19,102 INFO L85 PathProgramCache]: Analyzing trace with hash 87038451, now seen corresponding path program 2 times [2024-06-04 14:06:19,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:19,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146587774] [2024-06-04 14:06:19,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:19,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:20,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:20,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146587774] [2024-06-04 14:06:20,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146587774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:20,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:20,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:20,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729870062] [2024-06-04 14:06:20,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:20,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:20,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:20,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:20,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:20,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:20,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 276 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:20,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:20,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:20,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:21,073 INFO L124 PetriNetUnfolderBase]: 252/449 cut-off events. [2024-06-04 14:06:21,073 INFO L125 PetriNetUnfolderBase]: For 3172/3175 co-relation queries the response was YES. [2024-06-04 14:06:21,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 449 events. 252/449 cut-off events. For 3172/3175 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1609 event pairs, 86 based on Foata normal form. 2/448 useless extension candidates. Maximal degree in co-relation 1843. Up to 395 conditions per place. [2024-06-04 14:06:21,076 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 40 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-04 14:06:21,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 58 transitions, 432 flow [2024-06-04 14:06:21,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 14:06:21,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2024-06-04 14:06:21,078 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 276 flow. Second operand 7 states and 79 transitions. [2024-06-04 14:06:21,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 58 transitions, 432 flow [2024-06-04 14:06:21,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 403 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:21,082 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 304 flow [2024-06-04 14:06:21,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=304, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2024-06-04 14:06:21,083 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2024-06-04 14:06:21,083 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 304 flow [2024-06-04 14:06:21,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:21,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:21,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:21,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:06:21,084 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)] === [2024-06-04 14:06:21,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash 87305361, now seen corresponding path program 3 times [2024-06-04 14:06:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:21,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597784504] [2024-06-04 14:06:21,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:21,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:22,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:22,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597784504] [2024-06-04 14:06:22,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597784504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:22,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:22,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:22,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019701609] [2024-06-04 14:06:22,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:22,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:22,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:22,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:22,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:22,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 304 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:22,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:22,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:22,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:23,056 INFO L124 PetriNetUnfolderBase]: 253/451 cut-off events. [2024-06-04 14:06:23,056 INFO L125 PetriNetUnfolderBase]: For 3696/3699 co-relation queries the response was YES. [2024-06-04 14:06:23,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1962 conditions, 451 events. 253/451 cut-off events. For 3696/3699 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1626 event pairs, 85 based on Foata normal form. 2/450 useless extension candidates. Maximal degree in co-relation 1931. Up to 376 conditions per place. [2024-06-04 14:06:23,060 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 38 selfloop transitions, 23 changer transitions 0/63 dead transitions. [2024-06-04 14:06:23,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 520 flow [2024-06-04 14:06:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 14:06:23,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-04 14:06:23,061 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 304 flow. Second operand 7 states and 81 transitions. [2024-06-04 14:06:23,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 520 flow [2024-06-04 14:06:23,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 479 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:23,066 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 358 flow [2024-06-04 14:06:23,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=358, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-06-04 14:06:23,066 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2024-06-04 14:06:23,067 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 358 flow [2024-06-04 14:06:23,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:23,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:23,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:23,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:06:23,067 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)] === [2024-06-04 14:06:23,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash 87315281, now seen corresponding path program 1 times [2024-06-04 14:06:23,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:23,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492412251] [2024-06-04 14:06:23,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:23,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:25,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:25,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492412251] [2024-06-04 14:06:25,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492412251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:25,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:25,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:25,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266344702] [2024-06-04 14:06:25,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:25,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:25,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:25,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:25,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:25,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 358 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:25,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:25,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:25,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:25,841 INFO L124 PetriNetUnfolderBase]: 249/444 cut-off events. [2024-06-04 14:06:25,841 INFO L125 PetriNetUnfolderBase]: For 4155/4155 co-relation queries the response was YES. [2024-06-04 14:06:25,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 444 events. 249/444 cut-off events. For 4155/4155 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1586 event pairs, 80 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 1968. Up to 420 conditions per place. [2024-06-04 14:06:25,845 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 49 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-04 14:06:25,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 512 flow [2024-06-04 14:06:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-04 14:06:25,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-04 14:06:25,846 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 358 flow. Second operand 8 states and 82 transitions. [2024-06-04 14:06:25,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 512 flow [2024-06-04 14:06:25,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 63 transitions, 477 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:25,851 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 368 flow [2024-06-04 14:06:25,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=368, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-06-04 14:06:25,852 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2024-06-04 14:06:25,852 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 368 flow [2024-06-04 14:06:25,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:25,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:25,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:25,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:06:25,853 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)] === [2024-06-04 14:06:25,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:25,853 INFO L85 PathProgramCache]: Analyzing trace with hash 582135845, now seen corresponding path program 1 times [2024-06-04 14:06:25,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:25,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819351737] [2024-06-04 14:06:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:25,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:27,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:27,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819351737] [2024-06-04 14:06:27,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819351737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:27,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:27,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:27,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764907095] [2024-06-04 14:06:27,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:27,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:27,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:27,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:27,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:27,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:27,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 368 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:27,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:27,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:27,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:28,417 INFO L124 PetriNetUnfolderBase]: 255/454 cut-off events. [2024-06-04 14:06:28,418 INFO L125 PetriNetUnfolderBase]: For 4553/4553 co-relation queries the response was YES. [2024-06-04 14:06:28,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 454 events. 255/454 cut-off events. For 4553/4553 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1636 event pairs, 58 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 2067. Up to 401 conditions per place. [2024-06-04 14:06:28,421 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 58 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2024-06-04 14:06:28,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 554 flow [2024-06-04 14:06:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-04 14:06:28,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.354978354978355 [2024-06-04 14:06:28,422 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 368 flow. Second operand 7 states and 82 transitions. [2024-06-04 14:06:28,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 554 flow [2024-06-04 14:06:28,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 525 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:28,427 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 382 flow [2024-06-04 14:06:28,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2024-06-04 14:06:28,428 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 38 predicate places. [2024-06-04 14:06:28,428 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 382 flow [2024-06-04 14:06:28,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:28,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:28,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:28,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:06:28,429 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)] === [2024-06-04 14:06:28,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:28,429 INFO L85 PathProgramCache]: Analyzing trace with hash 582255815, now seen corresponding path program 2 times [2024-06-04 14:06:28,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:28,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198740657] [2024-06-04 14:06:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:28,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:30,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:30,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198740657] [2024-06-04 14:06:30,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198740657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:30,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:30,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:30,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240740724] [2024-06-04 14:06:30,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:30,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:30,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:30,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:30,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:30,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:30,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 382 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:30,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:30,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:30,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:31,041 INFO L124 PetriNetUnfolderBase]: 261/464 cut-off events. [2024-06-04 14:06:31,041 INFO L125 PetriNetUnfolderBase]: For 5196/5196 co-relation queries the response was YES. [2024-06-04 14:06:31,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2214 conditions, 464 events. 261/464 cut-off events. For 5196/5196 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1671 event pairs, 56 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 2179. Up to 394 conditions per place. [2024-06-04 14:06:31,045 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 54 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-04 14:06:31,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 572 flow [2024-06-04 14:06:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:31,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-04 14:06:31,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-04 14:06:31,047 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 382 flow. Second operand 7 states and 83 transitions. [2024-06-04 14:06:31,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 572 flow [2024-06-04 14:06:31,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 72 transitions, 545 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:31,057 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 413 flow [2024-06-04 14:06:31,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=413, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-06-04 14:06:31,057 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2024-06-04 14:06:31,058 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 413 flow [2024-06-04 14:06:31,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:31,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:31,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:31,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:06:31,058 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)] === [2024-06-04 14:06:31,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:31,059 INFO L85 PathProgramCache]: Analyzing trace with hash -339927675, now seen corresponding path program 1 times [2024-06-04 14:06:31,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:31,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348862386] [2024-06-04 14:06:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:31,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:32,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:32,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348862386] [2024-06-04 14:06:32,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348862386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:32,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:32,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:32,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398384199] [2024-06-04 14:06:32,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:32,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:32,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:32,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:32,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:32,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 413 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:32,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:32,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:32,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:33,165 INFO L124 PetriNetUnfolderBase]: 259/461 cut-off events. [2024-06-04 14:06:33,165 INFO L125 PetriNetUnfolderBase]: For 5712/5712 co-relation queries the response was YES. [2024-06-04 14:06:33,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 461 events. 259/461 cut-off events. For 5712/5712 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1658 event pairs, 75 based on Foata normal form. 1/460 useless extension candidates. Maximal degree in co-relation 2229. Up to 414 conditions per place. [2024-06-04 14:06:33,167 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 53 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-06-04 14:06:33,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 581 flow [2024-06-04 14:06:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 14:06:33,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2024-06-04 14:06:33,168 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 413 flow. Second operand 7 states and 79 transitions. [2024-06-04 14:06:33,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 581 flow [2024-06-04 14:06:33,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 537 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:33,174 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 407 flow [2024-06-04 14:06:33,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=407, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-04 14:06:33,175 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-04 14:06:33,175 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 407 flow [2024-06-04 14:06:33,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:33,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:33,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:33,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:06:33,176 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)] === [2024-06-04 14:06:33,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:33,177 INFO L85 PathProgramCache]: Analyzing trace with hash -335279287, now seen corresponding path program 1 times [2024-06-04 14:06:33,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:33,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710478212] [2024-06-04 14:06:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:33,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:34,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:34,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710478212] [2024-06-04 14:06:34,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710478212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:34,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:34,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:34,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121326890] [2024-06-04 14:06:34,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:34,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:34,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:35,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:35,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 407 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:35,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:35,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:35,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:35,477 INFO L124 PetriNetUnfolderBase]: 265/472 cut-off events. [2024-06-04 14:06:35,477 INFO L125 PetriNetUnfolderBase]: For 6487/6487 co-relation queries the response was YES. [2024-06-04 14:06:35,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 472 events. 265/472 cut-off events. For 6487/6487 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1714 event pairs, 78 based on Foata normal form. 2/471 useless extension candidates. Maximal degree in co-relation 2292. Up to 422 conditions per place. [2024-06-04 14:06:35,481 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 58 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2024-06-04 14:06:35,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 74 transitions, 607 flow [2024-06-04 14:06:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 14:06:35,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:06:35,483 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 407 flow. Second operand 8 states and 88 transitions. [2024-06-04 14:06:35,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 74 transitions, 607 flow [2024-06-04 14:06:35,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 565 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:35,489 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 420 flow [2024-06-04 14:06:35,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=420, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-06-04 14:06:35,490 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-04 14:06:35,490 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 420 flow [2024-06-04 14:06:35,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:35,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:35,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:35,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:06:35,491 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)] === [2024-06-04 14:06:35,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:35,491 INFO L85 PathProgramCache]: Analyzing trace with hash 759387335, now seen corresponding path program 3 times [2024-06-04 14:06:35,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:35,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241906054] [2024-06-04 14:06:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:35,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:37,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241906054] [2024-06-04 14:06:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241906054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:37,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:37,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:37,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125963782] [2024-06-04 14:06:37,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:37,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:37,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:37,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:37,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 420 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:37,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:37,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:37,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:38,057 INFO L124 PetriNetUnfolderBase]: 261/466 cut-off events. [2024-06-04 14:06:38,057 INFO L125 PetriNetUnfolderBase]: For 6949/6952 co-relation queries the response was YES. [2024-06-04 14:06:38,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2339 conditions, 466 events. 261/466 cut-off events. For 6949/6952 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1695 event pairs, 67 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2301. Up to 380 conditions per place. [2024-06-04 14:06:38,060 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 53 selfloop transitions, 19 changer transitions 0/74 dead transitions. [2024-06-04 14:06:38,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 74 transitions, 614 flow [2024-06-04 14:06:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-04 14:06:38,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-04 14:06:38,062 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 420 flow. Second operand 7 states and 83 transitions. [2024-06-04 14:06:38,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 74 transitions, 614 flow [2024-06-04 14:06:38,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 575 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:38,068 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 448 flow [2024-06-04 14:06:38,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=448, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-06-04 14:06:38,069 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 45 predicate places. [2024-06-04 14:06:38,069 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 448 flow [2024-06-04 14:06:38,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:38,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:38,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:38,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:06:38,070 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)] === [2024-06-04 14:06:38,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1596773563, now seen corresponding path program 2 times [2024-06-04 14:06:38,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:38,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196062013] [2024-06-04 14:06:38,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:39,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:39,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196062013] [2024-06-04 14:06:39,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196062013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:39,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:39,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:39,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268892667] [2024-06-04 14:06:39,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:39,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:39,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:39,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:39,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:39,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:39,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:39,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:39,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:39,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:40,182 INFO L124 PetriNetUnfolderBase]: 267/476 cut-off events. [2024-06-04 14:06:40,182 INFO L125 PetriNetUnfolderBase]: For 7736/7739 co-relation queries the response was YES. [2024-06-04 14:06:40,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 476 events. 267/476 cut-off events. For 7736/7739 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1735 event pairs, 79 based on Foata normal form. 2/475 useless extension candidates. Maximal degree in co-relation 2411. Up to 414 conditions per place. [2024-06-04 14:06:40,186 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 56 selfloop transitions, 18 changer transitions 0/76 dead transitions. [2024-06-04 14:06:40,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 76 transitions, 652 flow [2024-06-04 14:06:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 14:06:40,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:06:40,188 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 448 flow. Second operand 8 states and 88 transitions. [2024-06-04 14:06:40,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 76 transitions, 652 flow [2024-06-04 14:06:40,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 601 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:40,196 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 464 flow [2024-06-04 14:06:40,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=464, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2024-06-04 14:06:40,197 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 48 predicate places. [2024-06-04 14:06:40,197 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 464 flow [2024-06-04 14:06:40,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:40,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:40,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:40,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:06:40,198 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)] === [2024-06-04 14:06:40,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:40,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1025595809, now seen corresponding path program 3 times [2024-06-04 14:06:40,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:40,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011457904] [2024-06-04 14:06:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:40,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:42,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:42,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011457904] [2024-06-04 14:06:42,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011457904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:42,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:42,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:42,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170484538] [2024-06-04 14:06:42,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:42,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:42,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:42,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:42,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:42,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 464 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:42,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:42,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:42,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:42,428 INFO L124 PetriNetUnfolderBase]: 273/486 cut-off events. [2024-06-04 14:06:42,429 INFO L125 PetriNetUnfolderBase]: For 8489/8492 co-relation queries the response was YES. [2024-06-04 14:06:42,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2548 conditions, 486 events. 273/486 cut-off events. For 8489/8492 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1787 event pairs, 79 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2508. Up to 404 conditions per place. [2024-06-04 14:06:42,433 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 51 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2024-06-04 14:06:42,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 78 transitions, 676 flow [2024-06-04 14:06:42,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:42,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 14:06:42,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3371212121212121 [2024-06-04 14:06:42,434 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 464 flow. Second operand 8 states and 89 transitions. [2024-06-04 14:06:42,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 78 transitions, 676 flow [2024-06-04 14:06:42,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 78 transitions, 625 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:42,441 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 498 flow [2024-06-04 14:06:42,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=498, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2024-06-04 14:06:42,441 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 50 predicate places. [2024-06-04 14:06:42,441 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 498 flow [2024-06-04 14:06:42,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:42,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:42,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:42,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:06:42,442 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)] === [2024-06-04 14:06:42,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:42,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1722419777, now seen corresponding path program 4 times [2024-06-04 14:06:42,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:42,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616869722] [2024-06-04 14:06:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:42,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:44,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616869722] [2024-06-04 14:06:44,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616869722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:44,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:44,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:44,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937151509] [2024-06-04 14:06:44,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:44,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:44,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:44,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:44,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:44,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:44,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 498 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:44,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:44,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:44,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:44,780 INFO L124 PetriNetUnfolderBase]: 274/488 cut-off events. [2024-06-04 14:06:44,780 INFO L125 PetriNetUnfolderBase]: For 9202/9205 co-relation queries the response was YES. [2024-06-04 14:06:44,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 488 events. 274/488 cut-off events. For 9202/9205 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1809 event pairs, 78 based on Foata normal form. 2/487 useless extension candidates. Maximal degree in co-relation 2589. Up to 377 conditions per place. [2024-06-04 14:06:44,784 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 47 selfloop transitions, 34 changer transitions 0/83 dead transitions. [2024-06-04 14:06:44,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 83 transitions, 798 flow [2024-06-04 14:06:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:06:44,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-04 14:06:44,787 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 498 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:06:44,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 83 transitions, 798 flow [2024-06-04 14:06:44,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 83 transitions, 729 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:44,797 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 566 flow [2024-06-04 14:06:44,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=566, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-06-04 14:06:44,797 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2024-06-04 14:06:44,797 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 566 flow [2024-06-04 14:06:44,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:44,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:44,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:44,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:06:44,798 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)] === [2024-06-04 14:06:44,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:44,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1180688580, now seen corresponding path program 1 times [2024-06-04 14:06:44,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:44,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684899431] [2024-06-04 14:06:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:44,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:46,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:46,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684899431] [2024-06-04 14:06:46,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684899431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:46,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:46,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:46,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236819967] [2024-06-04 14:06:46,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:46,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:46,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:46,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:46,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:46,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:46,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 566 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:46,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:46,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:46,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:47,279 INFO L124 PetriNetUnfolderBase]: 310/553 cut-off events. [2024-06-04 14:06:47,279 INFO L125 PetriNetUnfolderBase]: For 10190/10190 co-relation queries the response was YES. [2024-06-04 14:06:47,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2934 conditions, 553 events. 310/553 cut-off events. For 10190/10190 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2142 event pairs, 61 based on Foata normal form. 2/553 useless extension candidates. Maximal degree in co-relation 2892. Up to 464 conditions per place. [2024-06-04 14:06:47,284 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 79 selfloop transitions, 20 changer transitions 0/101 dead transitions. [2024-06-04 14:06:47,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 899 flow [2024-06-04 14:06:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:47,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:06:47,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-04 14:06:47,286 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 566 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:06:47,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 899 flow [2024-06-04 14:06:47,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 101 transitions, 834 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:47,298 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 659 flow [2024-06-04 14:06:47,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=659, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2024-06-04 14:06:47,299 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 60 predicate places. [2024-06-04 14:06:47,299 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 659 flow [2024-06-04 14:06:47,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:47,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:47,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:47,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:06:47,300 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)] === [2024-06-04 14:06:47,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:47,300 INFO L85 PathProgramCache]: Analyzing trace with hash -736061328, now seen corresponding path program 2 times [2024-06-04 14:06:47,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:47,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803133278] [2024-06-04 14:06:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:47,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:49,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:49,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803133278] [2024-06-04 14:06:49,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803133278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:49,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:49,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:49,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755242804] [2024-06-04 14:06:49,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:49,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:49,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:49,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:49,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:49,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:49,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 659 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:49,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:49,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:49,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:50,080 INFO L124 PetriNetUnfolderBase]: 316/563 cut-off events. [2024-06-04 14:06:50,080 INFO L125 PetriNetUnfolderBase]: For 11055/11055 co-relation queries the response was YES. [2024-06-04 14:06:50,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3108 conditions, 563 events. 316/563 cut-off events. For 11055/11055 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2186 event pairs, 66 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 3061. Up to 454 conditions per place. [2024-06-04 14:06:50,084 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 74 selfloop transitions, 24 changer transitions 0/100 dead transitions. [2024-06-04 14:06:50,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 100 transitions, 923 flow [2024-06-04 14:06:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:06:50,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-04 14:06:50,088 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 659 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:06:50,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 100 transitions, 923 flow [2024-06-04 14:06:50,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 888 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:50,100 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 708 flow [2024-06-04 14:06:50,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=708, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-06-04 14:06:50,100 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-06-04 14:06:50,100 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 708 flow [2024-06-04 14:06:50,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:50,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:50,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:50,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:06:50,101 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)] === [2024-06-04 14:06:50,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:50,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1809293648, now seen corresponding path program 3 times [2024-06-04 14:06:50,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:50,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365037608] [2024-06-04 14:06:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:50,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:52,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:52,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365037608] [2024-06-04 14:06:52,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365037608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:52,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:52,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:52,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70333874] [2024-06-04 14:06:52,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:52,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:52,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:52,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:52,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:52,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:52,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 84 transitions, 708 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:52,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:52,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:52,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:52,660 INFO L124 PetriNetUnfolderBase]: 332/588 cut-off events. [2024-06-04 14:06:52,660 INFO L125 PetriNetUnfolderBase]: For 12823/12823 co-relation queries the response was YES. [2024-06-04 14:06:52,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 588 events. 332/588 cut-off events. For 12823/12823 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2307 event pairs, 66 based on Foata normal form. 2/588 useless extension candidates. Maximal degree in co-relation 3338. Up to 429 conditions per place. [2024-06-04 14:06:52,664 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 34 changer transitions 0/105 dead transitions. [2024-06-04 14:06:52,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 1062 flow [2024-06-04 14:06:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 14:06:52,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-06-04 14:06:52,666 INFO L175 Difference]: Start difference. First operand has 97 places, 84 transitions, 708 flow. Second operand 8 states and 95 transitions. [2024-06-04 14:06:52,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 1062 flow [2024-06-04 14:06:52,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 105 transitions, 988 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:52,680 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 770 flow [2024-06-04 14:06:52,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=770, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2024-06-04 14:06:52,681 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-04 14:06:52,681 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 770 flow [2024-06-04 14:06:52,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:52,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:52,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:52,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:06:52,682 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)] === [2024-06-04 14:06:52,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:52,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1809293431, now seen corresponding path program 1 times [2024-06-04 14:06:52,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:52,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401974661] [2024-06-04 14:06:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:52,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:54,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:54,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401974661] [2024-06-04 14:06:54,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401974661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:54,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:54,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:54,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701428281] [2024-06-04 14:06:54,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:54,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:54,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:54,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:54,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:54,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:54,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 770 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:54,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:54,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:54,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:55,296 INFO L124 PetriNetUnfolderBase]: 330/586 cut-off events. [2024-06-04 14:06:55,297 INFO L125 PetriNetUnfolderBase]: For 12406/12406 co-relation queries the response was YES. [2024-06-04 14:06:55,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3349 conditions, 586 events. 330/586 cut-off events. For 12406/12406 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2300 event pairs, 87 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 3300. Up to 513 conditions per place. [2024-06-04 14:06:55,301 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 78 selfloop transitions, 22 changer transitions 0/102 dead transitions. [2024-06-04 14:06:55,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 102 transitions, 1014 flow [2024-06-04 14:06:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 14:06:55,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:06:55,303 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 770 flow. Second operand 8 states and 88 transitions. [2024-06-04 14:06:55,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 102 transitions, 1014 flow [2024-06-04 14:06:55,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 102 transitions, 955 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:55,315 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 763 flow [2024-06-04 14:06:55,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=763, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2024-06-04 14:06:55,316 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 71 predicate places. [2024-06-04 14:06:55,316 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 763 flow [2024-06-04 14:06:55,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:55,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:55,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:55,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:06:55,317 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)] === [2024-06-04 14:06:55,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1947827378, now seen corresponding path program 4 times [2024-06-04 14:06:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:55,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380412261] [2024-06-04 14:06:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:55,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:57,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:57,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380412261] [2024-06-04 14:06:57,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380412261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:57,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:57,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:57,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609841041] [2024-06-04 14:06:57,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:57,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:57,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:57,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:57,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:57,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:57,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 763 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:57,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:57,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:57,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:58,044 INFO L124 PetriNetUnfolderBase]: 326/579 cut-off events. [2024-06-04 14:06:58,044 INFO L125 PetriNetUnfolderBase]: For 12753/12753 co-relation queries the response was YES. [2024-06-04 14:06:58,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3308 conditions, 579 events. 326/579 cut-off events. For 12753/12753 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2251 event pairs, 65 based on Foata normal form. 2/579 useless extension candidates. Maximal degree in co-relation 3257. Up to 458 conditions per place. [2024-06-04 14:06:58,048 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 75 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2024-06-04 14:06:58,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 103 transitions, 1003 flow [2024-06-04 14:06:58,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 14:06:58,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:06:58,049 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 763 flow. Second operand 8 states and 92 transitions. [2024-06-04 14:06:58,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 103 transitions, 1003 flow [2024-06-04 14:06:58,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 103 transitions, 928 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:58,065 INFO L231 Difference]: Finished difference. Result has 104 places, 88 transitions, 745 flow [2024-06-04 14:06:58,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=745, PETRI_PLACES=104, PETRI_TRANSITIONS=88} [2024-06-04 14:06:58,066 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2024-06-04 14:06:58,066 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 88 transitions, 745 flow [2024-06-04 14:06:58,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:58,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:58,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:58,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:06:58,066 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)] === [2024-06-04 14:06:58,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:58,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1803721522, now seen corresponding path program 1 times [2024-06-04 14:06:58,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:58,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129104702] [2024-06-04 14:06:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:00,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:00,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129104702] [2024-06-04 14:07:00,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129104702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:00,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:00,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:00,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388952786] [2024-06-04 14:07:00,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:00,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:00,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:00,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:00,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:00,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:00,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 88 transitions, 745 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:00,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:00,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:00,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:00,748 INFO L124 PetriNetUnfolderBase]: 332/591 cut-off events. [2024-06-04 14:07:00,749 INFO L125 PetriNetUnfolderBase]: For 13723/13723 co-relation queries the response was YES. [2024-06-04 14:07:00,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3378 conditions, 591 events. 332/591 cut-off events. For 13723/13723 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2324 event pairs, 85 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3326. Up to 520 conditions per place. [2024-06-04 14:07:00,752 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 86 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2024-06-04 14:07:00,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 107 transitions, 1035 flow [2024-06-04 14:07:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 14:07:00,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-04 14:07:00,753 INFO L175 Difference]: Start difference. First operand has 104 places, 88 transitions, 745 flow. Second operand 9 states and 97 transitions. [2024-06-04 14:07:00,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 107 transitions, 1035 flow [2024-06-04 14:07:00,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 963 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:00,767 INFO L231 Difference]: Finished difference. Result has 106 places, 90 transitions, 744 flow [2024-06-04 14:07:00,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=744, PETRI_PLACES=106, PETRI_TRANSITIONS=90} [2024-06-04 14:07:00,768 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 74 predicate places. [2024-06-04 14:07:00,768 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 744 flow [2024-06-04 14:07:00,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:00,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:00,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:00,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:07:00,769 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)] === [2024-06-04 14:07:00,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:00,769 INFO L85 PathProgramCache]: Analyzing trace with hash -751711974, now seen corresponding path program 5 times [2024-06-04 14:07:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:00,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794154921] [2024-06-04 14:07:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:03,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794154921] [2024-06-04 14:07:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794154921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:03,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:03,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:07:03,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730705758] [2024-06-04 14:07:03,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:03,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:07:03,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:03,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:07:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:07:03,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:03,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 744 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:03,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:03,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:03,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:03,769 INFO L124 PetriNetUnfolderBase]: 348/616 cut-off events. [2024-06-04 14:07:03,769 INFO L125 PetriNetUnfolderBase]: For 15531/15534 co-relation queries the response was YES. [2024-06-04 14:07:03,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 616 events. 348/616 cut-off events. For 15531/15534 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2455 event pairs, 72 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 3550. Up to 462 conditions per place. [2024-06-04 14:07:03,773 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 77 selfloop transitions, 32 changer transitions 0/111 dead transitions. [2024-06-04 14:07:03,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 111 transitions, 1116 flow [2024-06-04 14:07:03,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:07:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:07:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 14:07:03,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36742424242424243 [2024-06-04 14:07:03,774 INFO L175 Difference]: Start difference. First operand has 106 places, 90 transitions, 744 flow. Second operand 8 states and 97 transitions. [2024-06-04 14:07:03,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 111 transitions, 1116 flow [2024-06-04 14:07:03,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 1061 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:03,790 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 818 flow [2024-06-04 14:07:03,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=818, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2024-06-04 14:07:03,790 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2024-06-04 14:07:03,790 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 818 flow [2024-06-04 14:07:03,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:03,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:03,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:03,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:07:03,791 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)] === [2024-06-04 14:07:03,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash -751717554, now seen corresponding path program 6 times [2024-06-04 14:07:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:03,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375860007] [2024-06-04 14:07:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:06,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:06,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375860007] [2024-06-04 14:07:06,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375860007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:06,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:06,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:07:06,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069534354] [2024-06-04 14:07:06,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:06,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:07:06,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:06,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:07:06,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:07:06,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:06,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 818 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:06,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:06,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:06,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:06,603 INFO L124 PetriNetUnfolderBase]: 344/610 cut-off events. [2024-06-04 14:07:06,603 INFO L125 PetriNetUnfolderBase]: For 15949/15952 co-relation queries the response was YES. [2024-06-04 14:07:06,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3610 conditions, 610 events. 344/610 cut-off events. For 15949/15952 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2416 event pairs, 72 based on Foata normal form. 2/606 useless extension candidates. Maximal degree in co-relation 3556. Up to 473 conditions per place. [2024-06-04 14:07:06,607 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 77 selfloop transitions, 29 changer transitions 0/108 dead transitions. [2024-06-04 14:07:06,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 108 transitions, 1066 flow [2024-06-04 14:07:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:07:06,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:07:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 14:07:06,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:07:06,608 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 818 flow. Second operand 8 states and 92 transitions. [2024-06-04 14:07:06,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 108 transitions, 1066 flow [2024-06-04 14:07:06,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 108 transitions, 986 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-04 14:07:06,623 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 801 flow [2024-06-04 14:07:06,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=801, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2024-06-04 14:07:06,624 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 79 predicate places. [2024-06-04 14:07:06,624 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 801 flow [2024-06-04 14:07:06,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:06,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:06,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:06,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:07:06,624 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)] === [2024-06-04 14:07:06,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:06,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2039628882, now seen corresponding path program 2 times [2024-06-04 14:07:06,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:06,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060084889] [2024-06-04 14:07:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:06,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:08,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060084889] [2024-06-04 14:07:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060084889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:08,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:08,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862922291] [2024-06-04 14:07:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:08,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:09,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:09,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 801 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:09,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:09,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:09,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:09,338 INFO L124 PetriNetUnfolderBase]: 350/621 cut-off events. [2024-06-04 14:07:09,338 INFO L125 PetriNetUnfolderBase]: For 16902/16905 co-relation queries the response was YES. [2024-06-04 14:07:09,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3694 conditions, 621 events. 350/621 cut-off events. For 16902/16905 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2487 event pairs, 89 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 3638. Up to 536 conditions per place. [2024-06-04 14:07:09,342 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 86 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2024-06-04 14:07:09,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 111 transitions, 1095 flow [2024-06-04 14:07:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:09,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 14:07:09,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-04 14:07:09,343 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 801 flow. Second operand 9 states and 97 transitions. [2024-06-04 14:07:09,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 111 transitions, 1095 flow [2024-06-04 14:07:09,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 111 transitions, 1030 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:09,361 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 819 flow [2024-06-04 14:07:09,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=819, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2024-06-04 14:07:09,362 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 81 predicate places. [2024-06-04 14:07:09,362 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 819 flow [2024-06-04 14:07:09,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:09,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:09,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:09,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:07:09,363 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)] === [2024-06-04 14:07:09,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:09,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1998845840, now seen corresponding path program 7 times [2024-06-04 14:07:09,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:09,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161889995] [2024-06-04 14:07:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:09,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:11,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:11,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161889995] [2024-06-04 14:07:11,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161889995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:11,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:11,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:07:11,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905358310] [2024-06-04 14:07:11,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:11,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:07:11,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:11,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:07:11,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:07:11,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:11,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 819 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:11,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:11,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:11,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:12,032 INFO L124 PetriNetUnfolderBase]: 346/614 cut-off events. [2024-06-04 14:07:12,032 INFO L125 PetriNetUnfolderBase]: For 16983/16986 co-relation queries the response was YES. [2024-06-04 14:07:12,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 614 events. 346/614 cut-off events. For 16983/16986 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2447 event pairs, 69 based on Foata normal form. 2/610 useless extension candidates. Maximal degree in co-relation 3583. Up to 405 conditions per place. [2024-06-04 14:07:12,038 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 65 selfloop transitions, 46 changer transitions 0/113 dead transitions. [2024-06-04 14:07:12,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 1113 flow [2024-06-04 14:07:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:07:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:07:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 14:07:12,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-06-04 14:07:12,039 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 819 flow. Second operand 8 states and 95 transitions. [2024-06-04 14:07:12,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 1113 flow [2024-06-04 14:07:12,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 1046 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:12,079 INFO L231 Difference]: Finished difference. Result has 114 places, 98 transitions, 885 flow [2024-06-04 14:07:12,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=885, PETRI_PLACES=114, PETRI_TRANSITIONS=98} [2024-06-04 14:07:12,080 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2024-06-04 14:07:12,080 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 98 transitions, 885 flow [2024-06-04 14:07:12,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:12,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:12,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:12,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:07:12,081 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)] === [2024-06-04 14:07:12,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:12,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1998837904, now seen corresponding path program 3 times [2024-06-04 14:07:12,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:12,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984902571] [2024-06-04 14:07:12,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:12,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:14,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:14,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984902571] [2024-06-04 14:07:14,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984902571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:14,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:14,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:14,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092699078] [2024-06-04 14:07:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:14,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:14,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:14,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:14,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:14,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:14,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 98 transitions, 885 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:14,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:14,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:14,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:14,831 INFO L124 PetriNetUnfolderBase]: 352/625 cut-off events. [2024-06-04 14:07:14,831 INFO L125 PetriNetUnfolderBase]: For 18222/18225 co-relation queries the response was YES. [2024-06-04 14:07:14,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3810 conditions, 625 events. 352/625 cut-off events. For 18222/18225 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2525 event pairs, 86 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 3752. Up to 520 conditions per place. [2024-06-04 14:07:14,836 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 83 selfloop transitions, 30 changer transitions 0/115 dead transitions. [2024-06-04 14:07:14,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 115 transitions, 1191 flow [2024-06-04 14:07:14,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 14:07:14,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-04 14:07:14,837 INFO L175 Difference]: Start difference. First operand has 114 places, 98 transitions, 885 flow. Second operand 9 states and 98 transitions. [2024-06-04 14:07:14,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 115 transitions, 1191 flow [2024-06-04 14:07:14,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 1074 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:14,855 INFO L231 Difference]: Finished difference. Result has 117 places, 100 transitions, 869 flow [2024-06-04 14:07:14,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=869, PETRI_PLACES=117, PETRI_TRANSITIONS=100} [2024-06-04 14:07:14,856 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 85 predicate places. [2024-06-04 14:07:14,856 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 100 transitions, 869 flow [2024-06-04 14:07:14,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:14,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:14,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:14,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:07:14,856 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)] === [2024-06-04 14:07:14,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1989641134, now seen corresponding path program 4 times [2024-06-04 14:07:14,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:14,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916621549] [2024-06-04 14:07:14,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:14,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:17,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:17,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916621549] [2024-06-04 14:07:17,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916621549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:17,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:17,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:17,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982818082] [2024-06-04 14:07:17,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:17,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:17,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:17,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:17,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:17,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:17,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 100 transitions, 869 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:17,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:17,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:17,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:17,625 INFO L124 PetriNetUnfolderBase]: 358/635 cut-off events. [2024-06-04 14:07:17,625 INFO L125 PetriNetUnfolderBase]: For 19187/19190 co-relation queries the response was YES. [2024-06-04 14:07:17,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3846 conditions, 635 events. 358/635 cut-off events. For 19187/19190 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2578 event pairs, 86 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 3787. Up to 502 conditions per place. [2024-06-04 14:07:17,629 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 76 selfloop transitions, 39 changer transitions 0/117 dead transitions. [2024-06-04 14:07:17,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 117 transitions, 1183 flow [2024-06-04 14:07:17,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:07:17,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:07:17,631 INFO L175 Difference]: Start difference. First operand has 117 places, 100 transitions, 869 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:07:17,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 117 transitions, 1183 flow [2024-06-04 14:07:17,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 117 transitions, 1098 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:17,660 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 907 flow [2024-06-04 14:07:17,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=907, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2024-06-04 14:07:17,661 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 87 predicate places. [2024-06-04 14:07:17,661 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 907 flow [2024-06-04 14:07:17,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:17,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:17,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:17,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:07:17,662 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)] === [2024-06-04 14:07:17,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:17,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1989314704, now seen corresponding path program 5 times [2024-06-04 14:07:17,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:17,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638323781] [2024-06-04 14:07:17,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:17,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638323781] [2024-06-04 14:07:19,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638323781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:19,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:19,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:19,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956341542] [2024-06-04 14:07:19,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:19,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:19,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:19,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:19,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:20,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:20,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 907 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:20,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:20,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:20,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:20,334 INFO L124 PetriNetUnfolderBase]: 375/661 cut-off events. [2024-06-04 14:07:20,334 INFO L125 PetriNetUnfolderBase]: For 22139/22139 co-relation queries the response was YES. [2024-06-04 14:07:20,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4118 conditions, 661 events. 375/661 cut-off events. For 22139/22139 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2679 event pairs, 106 based on Foata normal form. 4/663 useless extension candidates. Maximal degree in co-relation 4058. Up to 611 conditions per place. [2024-06-04 14:07:20,338 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 101 selfloop transitions, 17 changer transitions 0/120 dead transitions. [2024-06-04 14:07:20,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 120 transitions, 1329 flow [2024-06-04 14:07:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 14:07:20,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31986531986531985 [2024-06-04 14:07:20,339 INFO L175 Difference]: Start difference. First operand has 119 places, 102 transitions, 907 flow. Second operand 9 states and 95 transitions. [2024-06-04 14:07:20,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 120 transitions, 1329 flow [2024-06-04 14:07:20,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 120 transitions, 1222 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:20,360 INFO L231 Difference]: Finished difference. Result has 121 places, 107 transitions, 924 flow [2024-06-04 14:07:20,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=924, PETRI_PLACES=121, PETRI_TRANSITIONS=107} [2024-06-04 14:07:20,361 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 89 predicate places. [2024-06-04 14:07:20,361 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 107 transitions, 924 flow [2024-06-04 14:07:20,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:20,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:20,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:20,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:07:20,362 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)] === [2024-06-04 14:07:20,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:20,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1989302800, now seen corresponding path program 1 times [2024-06-04 14:07:20,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:20,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648949355] [2024-06-04 14:07:20,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:20,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:24,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:24,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648949355] [2024-06-04 14:07:24,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648949355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:24,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:24,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:24,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595699678] [2024-06-04 14:07:24,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:24,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:24,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:24,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:24,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 107 transitions, 924 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) [2024-06-04 14:07:24,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:24,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:24,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:24,774 INFO L124 PetriNetUnfolderBase]: 372/656 cut-off events. [2024-06-04 14:07:24,774 INFO L125 PetriNetUnfolderBase]: For 20986/20986 co-relation queries the response was YES. [2024-06-04 14:07:24,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4039 conditions, 656 events. 372/656 cut-off events. For 20986/20986 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2649 event pairs, 108 based on Foata normal form. 2/656 useless extension candidates. Maximal degree in co-relation 3978. Up to 623 conditions per place. [2024-06-04 14:07:24,779 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 103 selfloop transitions, 15 changer transitions 0/120 dead transitions. [2024-06-04 14:07:24,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 120 transitions, 1205 flow [2024-06-04 14:07:24,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:24,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-04 14:07:24,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2909090909090909 [2024-06-04 14:07:24,781 INFO L175 Difference]: Start difference. First operand has 121 places, 107 transitions, 924 flow. Second operand 10 states and 96 transitions. [2024-06-04 14:07:24,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 120 transitions, 1205 flow [2024-06-04 14:07:24,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 120 transitions, 1147 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 14:07:24,810 INFO L231 Difference]: Finished difference. Result has 127 places, 109 transitions, 924 flow [2024-06-04 14:07:24,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=924, PETRI_PLACES=127, PETRI_TRANSITIONS=109} [2024-06-04 14:07:24,810 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 95 predicate places. [2024-06-04 14:07:24,810 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 109 transitions, 924 flow [2024-06-04 14:07:24,811 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) [2024-06-04 14:07:24,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:24,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:24,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:07:24,811 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)] === [2024-06-04 14:07:24,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:24,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1083991748, now seen corresponding path program 1 times [2024-06-04 14:07:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:24,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915624484] [2024-06-04 14:07:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:24,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:27,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915624484] [2024-06-04 14:07:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915624484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:27,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:27,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492623490] [2024-06-04 14:07:27,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:27,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:27,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 109 transitions, 924 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:07:27,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:27,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:27,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:27,738 INFO L124 PetriNetUnfolderBase]: 376/665 cut-off events. [2024-06-04 14:07:27,739 INFO L125 PetriNetUnfolderBase]: For 21940/21940 co-relation queries the response was YES. [2024-06-04 14:07:27,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4079 conditions, 665 events. 376/665 cut-off events. For 21940/21940 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2725 event pairs, 55 based on Foata normal form. 2/665 useless extension candidates. Maximal degree in co-relation 4015. Up to 560 conditions per place. [2024-06-04 14:07:27,745 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 106 selfloop transitions, 18 changer transitions 0/126 dead transitions. [2024-06-04 14:07:27,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 126 transitions, 1230 flow [2024-06-04 14:07:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:07:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:07:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 14:07:27,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:07:27,746 INFO L175 Difference]: Start difference. First operand has 127 places, 109 transitions, 924 flow. Second operand 8 states and 88 transitions. [2024-06-04 14:07:27,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 126 transitions, 1230 flow [2024-06-04 14:07:27,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 126 transitions, 1184 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:27,774 INFO L231 Difference]: Finished difference. Result has 128 places, 110 transitions, 934 flow [2024-06-04 14:07:27,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=934, PETRI_PLACES=128, PETRI_TRANSITIONS=110} [2024-06-04 14:07:27,775 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 96 predicate places. [2024-06-04 14:07:27,775 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 110 transitions, 934 flow [2024-06-04 14:07:27,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:07:27,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:27,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:27,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:07:27,775 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)] === [2024-06-04 14:07:27,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1084052198, now seen corresponding path program 2 times [2024-06-04 14:07:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291674190] [2024-06-04 14:07:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:30,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:30,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291674190] [2024-06-04 14:07:30,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291674190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:30,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:30,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:30,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874275633] [2024-06-04 14:07:30,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:30,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:30,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:30,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:30,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:30,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 110 transitions, 934 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:07:30,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:30,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:30,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:30,835 INFO L124 PetriNetUnfolderBase]: 380/673 cut-off events. [2024-06-04 14:07:30,835 INFO L125 PetriNetUnfolderBase]: For 23277/23277 co-relation queries the response was YES. [2024-06-04 14:07:30,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4164 conditions, 673 events. 380/673 cut-off events. For 23277/23277 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2771 event pairs, 75 based on Foata normal form. 2/673 useless extension candidates. Maximal degree in co-relation 4099. Up to 572 conditions per place. [2024-06-04 14:07:30,840 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 104 selfloop transitions, 21 changer transitions 0/127 dead transitions. [2024-06-04 14:07:30,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 127 transitions, 1244 flow [2024-06-04 14:07:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:07:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:07:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-04 14:07:30,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:07:30,842 INFO L175 Difference]: Start difference. First operand has 128 places, 110 transitions, 934 flow. Second operand 8 states and 90 transitions. [2024-06-04 14:07:30,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 127 transitions, 1244 flow [2024-06-04 14:07:30,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 1198 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:30,878 INFO L231 Difference]: Finished difference. Result has 130 places, 111 transitions, 953 flow [2024-06-04 14:07:30,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=953, PETRI_PLACES=130, PETRI_TRANSITIONS=111} [2024-06-04 14:07:30,879 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-04 14:07:30,879 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 953 flow [2024-06-04 14:07:30,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:07:30,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:30,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:30,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:07:30,880 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)] === [2024-06-04 14:07:30,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash -368395992, now seen corresponding path program 1 times [2024-06-04 14:07:30,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:30,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732527994] [2024-06-04 14:07:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:30,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:33,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:33,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732527994] [2024-06-04 14:07:33,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732527994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:33,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:33,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:33,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113523879] [2024-06-04 14:07:33,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:33,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:33,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:33,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:33,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:33,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:33,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 111 transitions, 953 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) [2024-06-04 14:07:33,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:33,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:33,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:34,264 INFO L124 PetriNetUnfolderBase]: 386/683 cut-off events. [2024-06-04 14:07:34,264 INFO L125 PetriNetUnfolderBase]: For 24882/24882 co-relation queries the response was YES. [2024-06-04 14:07:34,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4252 conditions, 683 events. 386/683 cut-off events. For 24882/24882 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2829 event pairs, 74 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 4186. Up to 562 conditions per place. [2024-06-04 14:07:34,268 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 103 selfloop transitions, 26 changer transitions 0/131 dead transitions. [2024-06-04 14:07:34,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 1289 flow [2024-06-04 14:07:34,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:34,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:34,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:07:34,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-04 14:07:34,270 INFO L175 Difference]: Start difference. First operand has 130 places, 111 transitions, 953 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:07:34,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 1289 flow [2024-06-04 14:07:34,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 1236 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:34,299 INFO L231 Difference]: Finished difference. Result has 133 places, 113 transitions, 992 flow [2024-06-04 14:07:34,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=992, PETRI_PLACES=133, PETRI_TRANSITIONS=113} [2024-06-04 14:07:34,300 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-04 14:07:34,300 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 113 transitions, 992 flow [2024-06-04 14:07:34,300 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) [2024-06-04 14:07:34,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:34,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:34,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:07:34,300 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)] === [2024-06-04 14:07:34,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1893970224, now seen corresponding path program 2 times [2024-06-04 14:07:34,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:34,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179140216] [2024-06-04 14:07:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:34,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:36,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:36,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179140216] [2024-06-04 14:07:36,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179140216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:36,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:36,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177946593] [2024-06-04 14:07:36,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:36,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:36,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:36,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:36,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:36,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 113 transitions, 992 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) [2024-06-04 14:07:36,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:36,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:36,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:37,333 INFO L124 PetriNetUnfolderBase]: 402/708 cut-off events. [2024-06-04 14:07:37,334 INFO L125 PetriNetUnfolderBase]: For 27710/27710 co-relation queries the response was YES. [2024-06-04 14:07:37,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4541 conditions, 708 events. 402/708 cut-off events. For 27710/27710 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2953 event pairs, 70 based on Foata normal form. 2/708 useless extension candidates. Maximal degree in co-relation 4474. Up to 506 conditions per place. [2024-06-04 14:07:37,338 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 93 selfloop transitions, 42 changer transitions 0/137 dead transitions. [2024-06-04 14:07:37,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 137 transitions, 1458 flow [2024-06-04 14:07:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 14:07:37,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-04 14:07:37,339 INFO L175 Difference]: Start difference. First operand has 133 places, 113 transitions, 992 flow. Second operand 9 states and 106 transitions. [2024-06-04 14:07:37,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 137 transitions, 1458 flow [2024-06-04 14:07:37,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 137 transitions, 1384 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:37,370 INFO L231 Difference]: Finished difference. Result has 135 places, 117 transitions, 1080 flow [2024-06-04 14:07:37,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1080, PETRI_PLACES=135, PETRI_TRANSITIONS=117} [2024-06-04 14:07:37,371 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2024-06-04 14:07:37,371 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 117 transitions, 1080 flow [2024-06-04 14:07:37,371 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) [2024-06-04 14:07:37,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:37,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:37,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:07:37,372 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)] === [2024-06-04 14:07:37,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:37,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1893970472, now seen corresponding path program 1 times [2024-06-04 14:07:37,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:37,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705359456] [2024-06-04 14:07:37,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:37,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:39,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:39,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705359456] [2024-06-04 14:07:39,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705359456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:39,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:39,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:39,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62886724] [2024-06-04 14:07:39,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:39,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:39,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:39,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:39,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:39,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 117 transitions, 1080 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) [2024-06-04 14:07:39,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:39,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:39,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:40,282 INFO L124 PetriNetUnfolderBase]: 400/706 cut-off events. [2024-06-04 14:07:40,282 INFO L125 PetriNetUnfolderBase]: For 28159/28159 co-relation queries the response was YES. [2024-06-04 14:07:40,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4564 conditions, 706 events. 400/706 cut-off events. For 28159/28159 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2965 event pairs, 92 based on Foata normal form. 1/705 useless extension candidates. Maximal degree in co-relation 4496. Up to 622 conditions per place. [2024-06-04 14:07:40,286 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 107 selfloop transitions, 26 changer transitions 0/135 dead transitions. [2024-06-04 14:07:40,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 1442 flow [2024-06-04 14:07:40,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:40,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 14:07:40,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-04 14:07:40,287 INFO L175 Difference]: Start difference. First operand has 135 places, 117 transitions, 1080 flow. Second operand 9 states and 97 transitions. [2024-06-04 14:07:40,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 1442 flow [2024-06-04 14:07:40,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 1362 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-04 14:07:40,321 INFO L231 Difference]: Finished difference. Result has 139 places, 119 transitions, 1110 flow [2024-06-04 14:07:40,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1110, PETRI_PLACES=139, PETRI_TRANSITIONS=119} [2024-06-04 14:07:40,321 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 107 predicate places. [2024-06-04 14:07:40,322 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 119 transitions, 1110 flow [2024-06-04 14:07:40,322 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) [2024-06-04 14:07:40,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:40,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:40,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:07:40,322 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)] === [2024-06-04 14:07:40,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:40,322 INFO L85 PathProgramCache]: Analyzing trace with hash -253109782, now seen corresponding path program 3 times [2024-06-04 14:07:40,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:40,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003129950] [2024-06-04 14:07:40,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:40,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:42,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:42,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:42,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003129950] [2024-06-04 14:07:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003129950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:42,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:42,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:42,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229827355] [2024-06-04 14:07:42,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:42,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:42,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:42,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:42,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:42,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:42,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 119 transitions, 1110 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) [2024-06-04 14:07:42,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:42,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:42,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:43,349 INFO L124 PetriNetUnfolderBase]: 404/713 cut-off events. [2024-06-04 14:07:43,349 INFO L125 PetriNetUnfolderBase]: For 30144/30144 co-relation queries the response was YES. [2024-06-04 14:07:43,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 713 events. 404/713 cut-off events. For 30144/30144 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3001 event pairs, 69 based on Foata normal form. 2/713 useless extension candidates. Maximal degree in co-relation 4580. Up to 594 conditions per place. [2024-06-04 14:07:43,354 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 108 selfloop transitions, 25 changer transitions 0/135 dead transitions. [2024-06-04 14:07:43,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 135 transitions, 1432 flow [2024-06-04 14:07:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:07:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:07:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:07:43,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-04 14:07:43,355 INFO L175 Difference]: Start difference. First operand has 139 places, 119 transitions, 1110 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:07:43,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 135 transitions, 1432 flow [2024-06-04 14:07:43,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 135 transitions, 1348 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:43,400 INFO L231 Difference]: Finished difference. Result has 140 places, 120 transitions, 1100 flow [2024-06-04 14:07:43,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1100, PETRI_PLACES=140, PETRI_TRANSITIONS=120} [2024-06-04 14:07:43,400 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-06-04 14:07:43,400 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 120 transitions, 1100 flow [2024-06-04 14:07:43,401 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) [2024-06-04 14:07:43,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:43,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:43,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:07:43,401 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)] === [2024-06-04 14:07:43,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash 525921700, now seen corresponding path program 3 times [2024-06-04 14:07:43,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:43,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100004179] [2024-06-04 14:07:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:43,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:45,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:45,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:45,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100004179] [2024-06-04 14:07:45,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100004179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:45,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:45,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:45,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255918519] [2024-06-04 14:07:45,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:45,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:45,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:45,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:45,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:45,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:45,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 120 transitions, 1100 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) [2024-06-04 14:07:45,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:45,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:45,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:46,401 INFO L124 PetriNetUnfolderBase]: 410/723 cut-off events. [2024-06-04 14:07:46,401 INFO L125 PetriNetUnfolderBase]: For 31759/31759 co-relation queries the response was YES. [2024-06-04 14:07:46,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4734 conditions, 723 events. 410/723 cut-off events. For 31759/31759 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3046 event pairs, 72 based on Foata normal form. 2/723 useless extension candidates. Maximal degree in co-relation 4663. Up to 594 conditions per place. [2024-06-04 14:07:46,406 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 109 selfloop transitions, 28 changer transitions 0/139 dead transitions. [2024-06-04 14:07:46,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 139 transitions, 1450 flow [2024-06-04 14:07:46,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:46,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:46,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:07:46,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-04 14:07:46,407 INFO L175 Difference]: Start difference. First operand has 140 places, 120 transitions, 1100 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:07:46,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 139 transitions, 1450 flow [2024-06-04 14:07:46,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 1386 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:46,443 INFO L231 Difference]: Finished difference. Result has 143 places, 122 transitions, 1135 flow [2024-06-04 14:07:46,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1135, PETRI_PLACES=143, PETRI_TRANSITIONS=122} [2024-06-04 14:07:46,443 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2024-06-04 14:07:46,443 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 122 transitions, 1135 flow [2024-06-04 14:07:46,444 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) [2024-06-04 14:07:46,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:46,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:46,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:07:46,444 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)] === [2024-06-04 14:07:46,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1893963714, now seen corresponding path program 4 times [2024-06-04 14:07:46,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:46,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812909886] [2024-06-04 14:07:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:46,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:48,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:48,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812909886] [2024-06-04 14:07:48,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812909886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:48,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:48,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:48,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564447605] [2024-06-04 14:07:48,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:48,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:48,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:48,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:48,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:48,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 122 transitions, 1135 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) [2024-06-04 14:07:48,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:48,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:48,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:49,539 INFO L124 PetriNetUnfolderBase]: 406/717 cut-off events. [2024-06-04 14:07:49,539 INFO L125 PetriNetUnfolderBase]: For 31149/31149 co-relation queries the response was YES. [2024-06-04 14:07:49,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4641 conditions, 717 events. 406/717 cut-off events. For 31149/31149 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3001 event pairs, 69 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 4569. Up to 553 conditions per place. [2024-06-04 14:07:49,543 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 102 selfloop transitions, 36 changer transitions 0/140 dead transitions. [2024-06-04 14:07:49,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 140 transitions, 1457 flow [2024-06-04 14:07:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:07:49,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-04 14:07:49,545 INFO L175 Difference]: Start difference. First operand has 143 places, 122 transitions, 1135 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:07:49,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 140 transitions, 1457 flow [2024-06-04 14:07:49,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 140 transitions, 1360 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:49,588 INFO L231 Difference]: Finished difference. Result has 145 places, 122 transitions, 1115 flow [2024-06-04 14:07:49,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1115, PETRI_PLACES=145, PETRI_TRANSITIONS=122} [2024-06-04 14:07:49,588 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 113 predicate places. [2024-06-04 14:07:49,588 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 122 transitions, 1115 flow [2024-06-04 14:07:49,588 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) [2024-06-04 14:07:49,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:49,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:49,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:07:49,589 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)] === [2024-06-04 14:07:49,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:49,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1374459140, now seen corresponding path program 1 times [2024-06-04 14:07:49,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:49,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786698677] [2024-06-04 14:07:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:49,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:53,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:53,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786698677] [2024-06-04 14:07:53,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786698677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:53,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:53,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:53,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334002709] [2024-06-04 14:07:53,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:53,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:53,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:53,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:53,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:53,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:53,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 122 transitions, 1115 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) [2024-06-04 14:07:53,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:53,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:53,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:54,504 INFO L124 PetriNetUnfolderBase]: 412/729 cut-off events. [2024-06-04 14:07:54,504 INFO L125 PetriNetUnfolderBase]: For 32519/32519 co-relation queries the response was YES. [2024-06-04 14:07:54,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4710 conditions, 729 events. 412/729 cut-off events. For 32519/32519 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3083 event pairs, 92 based on Foata normal form. 2/727 useless extension candidates. Maximal degree in co-relation 4637. Up to 650 conditions per place. [2024-06-04 14:07:54,508 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 120 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2024-06-04 14:07:54,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 143 transitions, 1499 flow [2024-06-04 14:07:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:07:54,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-04 14:07:54,509 INFO L175 Difference]: Start difference. First operand has 145 places, 122 transitions, 1115 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:07:54,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 143 transitions, 1499 flow [2024-06-04 14:07:54,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 143 transitions, 1402 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:54,548 INFO L231 Difference]: Finished difference. Result has 147 places, 124 transitions, 1109 flow [2024-06-04 14:07:54,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1109, PETRI_PLACES=147, PETRI_TRANSITIONS=124} [2024-06-04 14:07:54,548 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2024-06-04 14:07:54,548 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 124 transitions, 1109 flow [2024-06-04 14:07:54,549 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) [2024-06-04 14:07:54,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:54,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:54,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:07:54,549 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)] === [2024-06-04 14:07:54,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:54,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1202692412, now seen corresponding path program 4 times [2024-06-04 14:07:54,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:54,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832241050] [2024-06-04 14:07:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:54,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:57,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:57,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832241050] [2024-06-04 14:07:57,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832241050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:57,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:57,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:57,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060177534] [2024-06-04 14:07:57,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:57,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:57,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:57,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:57,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:57,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:57,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 124 transitions, 1109 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) [2024-06-04 14:07:57,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:57,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:57,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:57,698 INFO L124 PetriNetUnfolderBase]: 409/723 cut-off events. [2024-06-04 14:07:57,698 INFO L125 PetriNetUnfolderBase]: For 31903/31906 co-relation queries the response was YES. [2024-06-04 14:07:57,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4580 conditions, 723 events. 409/723 cut-off events. For 31903/31906 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3054 event pairs, 73 based on Foata normal form. 2/719 useless extension candidates. Maximal degree in co-relation 4506. Up to 588 conditions per place. [2024-06-04 14:07:57,702 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 108 selfloop transitions, 28 changer transitions 0/138 dead transitions. [2024-06-04 14:07:57,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 138 transitions, 1417 flow [2024-06-04 14:07:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:07:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:07:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:07:57,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-04 14:07:57,703 INFO L175 Difference]: Start difference. First operand has 147 places, 124 transitions, 1109 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:07:57,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 138 transitions, 1417 flow [2024-06-04 14:07:57,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 138 transitions, 1342 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:57,752 INFO L231 Difference]: Finished difference. Result has 147 places, 124 transitions, 1094 flow [2024-06-04 14:07:57,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1094, PETRI_PLACES=147, PETRI_TRANSITIONS=124} [2024-06-04 14:07:57,752 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2024-06-04 14:07:57,752 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 124 transitions, 1094 flow [2024-06-04 14:07:57,753 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) [2024-06-04 14:07:57,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:57,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:57,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:07:57,753 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)] === [2024-06-04 14:07:57,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:57,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2029877058, now seen corresponding path program 5 times [2024-06-04 14:07:57,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:57,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237514714] [2024-06-04 14:07:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:57,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:00,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:00,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237514714] [2024-06-04 14:08:00,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237514714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:00,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:00,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:08:00,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887177346] [2024-06-04 14:08:00,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:00,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:08:00,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:00,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:08:00,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:08:00,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:00,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 124 transitions, 1094 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:00,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:00,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:00,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:01,117 INFO L124 PetriNetUnfolderBase]: 425/749 cut-off events. [2024-06-04 14:08:01,117 INFO L125 PetriNetUnfolderBase]: For 35517/35520 co-relation queries the response was YES. [2024-06-04 14:08:01,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4857 conditions, 749 events. 425/749 cut-off events. For 35517/35520 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3183 event pairs, 73 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 4782. Up to 569 conditions per place. [2024-06-04 14:08:01,122 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 109 selfloop transitions, 37 changer transitions 0/148 dead transitions. [2024-06-04 14:08:01,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 148 transitions, 1604 flow [2024-06-04 14:08:01,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:08:01,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:08:01,123 INFO L175 Difference]: Start difference. First operand has 147 places, 124 transitions, 1094 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:08:01,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 148 transitions, 1604 flow [2024-06-04 14:08:01,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 148 transitions, 1511 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:01,175 INFO L231 Difference]: Finished difference. Result has 149 places, 128 transitions, 1160 flow [2024-06-04 14:08:01,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1160, PETRI_PLACES=149, PETRI_TRANSITIONS=128} [2024-06-04 14:08:01,176 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 117 predicate places. [2024-06-04 14:08:01,176 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 128 transitions, 1160 flow [2024-06-04 14:08:01,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:01,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:01,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:01,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:08:01,176 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)] === [2024-06-04 14:08:01,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:01,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1397714386, now seen corresponding path program 6 times [2024-06-04 14:08:01,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:01,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97158943] [2024-06-04 14:08:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:03,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:03,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97158943] [2024-06-04 14:08:03,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97158943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:03,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:03,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:08:03,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255110313] [2024-06-04 14:08:03,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:03,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:08:03,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:08:03,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:08:03,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:03,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 128 transitions, 1160 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:03,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:03,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:03,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:04,283 INFO L124 PetriNetUnfolderBase]: 441/775 cut-off events. [2024-06-04 14:08:04,283 INFO L125 PetriNetUnfolderBase]: For 39589/39592 co-relation queries the response was YES. [2024-06-04 14:08:04,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 775 events. 441/775 cut-off events. For 39589/39592 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3321 event pairs, 67 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 5097. Up to 541 conditions per place. [2024-06-04 14:08:04,288 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 99 selfloop transitions, 51 changer transitions 0/152 dead transitions. [2024-06-04 14:08:04,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 152 transitions, 1688 flow [2024-06-04 14:08:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 14:08:04,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-04 14:08:04,289 INFO L175 Difference]: Start difference. First operand has 149 places, 128 transitions, 1160 flow. Second operand 9 states and 109 transitions. [2024-06-04 14:08:04,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 152 transitions, 1688 flow [2024-06-04 14:08:04,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 152 transitions, 1591 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-04 14:08:04,347 INFO L231 Difference]: Finished difference. Result has 152 places, 132 transitions, 1258 flow [2024-06-04 14:08:04,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1258, PETRI_PLACES=152, PETRI_TRANSITIONS=132} [2024-06-04 14:08:04,348 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 120 predicate places. [2024-06-04 14:08:04,348 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 132 transitions, 1258 flow [2024-06-04 14:08:04,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:04,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:04,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:04,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:08:04,348 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)] === [2024-06-04 14:08:04,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1397707876, now seen corresponding path program 7 times [2024-06-04 14:08:04,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:04,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368684224] [2024-06-04 14:08:04,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:04,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:07,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:07,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368684224] [2024-06-04 14:08:07,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368684224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:07,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:07,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:08:07,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691915991] [2024-06-04 14:08:07,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:07,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:08:07,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:07,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:08:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:08:07,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:07,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 132 transitions, 1258 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:07,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:07,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:07,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:07,728 INFO L124 PetriNetUnfolderBase]: 437/769 cut-off events. [2024-06-04 14:08:07,728 INFO L125 PetriNetUnfolderBase]: For 38882/38885 co-relation queries the response was YES. [2024-06-04 14:08:07,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 769 events. 437/769 cut-off events. For 38882/38885 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3291 event pairs, 67 based on Foata normal form. 2/765 useless extension candidates. Maximal degree in co-relation 5048. Up to 552 conditions per place. [2024-06-04 14:08:07,733 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 99 selfloop transitions, 48 changer transitions 0/149 dead transitions. [2024-06-04 14:08:07,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 149 transitions, 1596 flow [2024-06-04 14:08:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 14:08:07,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-04 14:08:07,734 INFO L175 Difference]: Start difference. First operand has 152 places, 132 transitions, 1258 flow. Second operand 9 states and 104 transitions. [2024-06-04 14:08:07,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 149 transitions, 1596 flow [2024-06-04 14:08:07,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 149 transitions, 1461 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-04 14:08:07,789 INFO L231 Difference]: Finished difference. Result has 156 places, 132 transitions, 1224 flow [2024-06-04 14:08:07,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1224, PETRI_PLACES=156, PETRI_TRANSITIONS=132} [2024-06-04 14:08:07,790 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-04 14:08:07,790 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 132 transitions, 1224 flow [2024-06-04 14:08:07,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:07,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:07,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:07,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:08:07,790 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)] === [2024-06-04 14:08:07,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2029870548, now seen corresponding path program 8 times [2024-06-04 14:08:07,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:07,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893030081] [2024-06-04 14:08:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:07,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:10,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:10,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893030081] [2024-06-04 14:08:10,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893030081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:10,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:10,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:08:10,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841870023] [2024-06-04 14:08:10,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:10,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:08:10,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:10,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:08:10,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:08:10,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:10,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 132 transitions, 1224 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:10,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:10,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:10,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:10,811 INFO L124 PetriNetUnfolderBase]: 443/779 cut-off events. [2024-06-04 14:08:10,812 INFO L125 PetriNetUnfolderBase]: For 40091/40094 co-relation queries the response was YES. [2024-06-04 14:08:10,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5214 conditions, 779 events. 443/779 cut-off events. For 40091/40094 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3369 event pairs, 75 based on Foata normal form. 2/775 useless extension candidates. Maximal degree in co-relation 5135. Up to 620 conditions per place. [2024-06-04 14:08:10,816 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 116 selfloop transitions, 34 changer transitions 0/152 dead transitions. [2024-06-04 14:08:10,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 152 transitions, 1604 flow [2024-06-04 14:08:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 14:08:10,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:08:10,818 INFO L175 Difference]: Start difference. First operand has 156 places, 132 transitions, 1224 flow. Second operand 9 states and 105 transitions. [2024-06-04 14:08:10,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 152 transitions, 1604 flow [2024-06-04 14:08:10,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 152 transitions, 1501 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:10,883 INFO L231 Difference]: Finished difference. Result has 157 places, 134 transitions, 1232 flow [2024-06-04 14:08:10,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1232, PETRI_PLACES=157, PETRI_TRANSITIONS=134} [2024-06-04 14:08:10,883 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 125 predicate places. [2024-06-04 14:08:10,883 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 134 transitions, 1232 flow [2024-06-04 14:08:10,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:10,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:10,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:10,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:08:10,884 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)] === [2024-06-04 14:08:10,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2016642510, now seen corresponding path program 9 times [2024-06-04 14:08:10,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:10,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642516036] [2024-06-04 14:08:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:10,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:13,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:13,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642516036] [2024-06-04 14:08:13,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642516036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:13,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:13,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:08:13,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006513653] [2024-06-04 14:08:13,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:13,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:08:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:08:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:08:13,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:13,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 134 transitions, 1232 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:13,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:13,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:13,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:13,751 INFO L124 PetriNetUnfolderBase]: 439/773 cut-off events. [2024-06-04 14:08:13,752 INFO L125 PetriNetUnfolderBase]: For 39339/39342 co-relation queries the response was YES. [2024-06-04 14:08:13,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5073 conditions, 773 events. 439/773 cut-off events. For 39339/39342 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3319 event pairs, 77 based on Foata normal form. 2/769 useless extension candidates. Maximal degree in co-relation 4993. Up to 628 conditions per place. [2024-06-04 14:08:13,757 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 117 selfloop transitions, 31 changer transitions 0/150 dead transitions. [2024-06-04 14:08:13,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 150 transitions, 1568 flow [2024-06-04 14:08:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:13,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:13,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:08:13,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-04 14:08:13,758 INFO L175 Difference]: Start difference. First operand has 157 places, 134 transitions, 1232 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:08:13,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 150 transitions, 1568 flow [2024-06-04 14:08:13,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 150 transitions, 1455 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:13,821 INFO L231 Difference]: Finished difference. Result has 159 places, 134 transitions, 1186 flow [2024-06-04 14:08:13,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1186, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2024-06-04 14:08:13,822 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 127 predicate places. [2024-06-04 14:08:13,822 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 1186 flow [2024-06-04 14:08:13,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:13,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:13,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:13,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:08:13,822 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)] === [2024-06-04 14:08:13,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2023317678, now seen corresponding path program 2 times [2024-06-04 14:08:13,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:13,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832172591] [2024-06-04 14:08:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:16,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:16,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832172591] [2024-06-04 14:08:16,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832172591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:16,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:16,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:16,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316664831] [2024-06-04 14:08:16,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:16,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:16,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:16,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:16,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:17,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:17,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 1186 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) [2024-06-04 14:08:17,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:17,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:17,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:17,515 INFO L124 PetriNetUnfolderBase]: 445/784 cut-off events. [2024-06-04 14:08:17,515 INFO L125 PetriNetUnfolderBase]: For 40872/40875 co-relation queries the response was YES. [2024-06-04 14:08:17,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5103 conditions, 784 events. 445/784 cut-off events. For 40872/40875 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3397 event pairs, 97 based on Foata normal form. 2/781 useless extension candidates. Maximal degree in co-relation 5022. Up to 691 conditions per place. [2024-06-04 14:08:17,521 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 126 selfloop transitions, 25 changer transitions 0/153 dead transitions. [2024-06-04 14:08:17,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 153 transitions, 1584 flow [2024-06-04 14:08:17,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:08:17,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-04 14:08:17,523 INFO L175 Difference]: Start difference. First operand has 159 places, 134 transitions, 1186 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:08:17,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 153 transitions, 1584 flow [2024-06-04 14:08:17,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 153 transitions, 1508 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:17,591 INFO L231 Difference]: Finished difference. Result has 161 places, 136 transitions, 1211 flow [2024-06-04 14:08:17,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1211, PETRI_PLACES=161, PETRI_TRANSITIONS=136} [2024-06-04 14:08:17,591 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 129 predicate places. [2024-06-04 14:08:17,591 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 136 transitions, 1211 flow [2024-06-04 14:08:17,592 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) [2024-06-04 14:08:17,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:17,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:17,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:08:17,592 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)] === [2024-06-04 14:08:17,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:17,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2050004578, now seen corresponding path program 3 times [2024-06-04 14:08:17,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:17,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091827] [2024-06-04 14:08:17,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:17,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:21,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:21,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091827] [2024-06-04 14:08:21,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:21,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:21,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:21,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817652427] [2024-06-04 14:08:21,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:21,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:21,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:21,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:21,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:21,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:21,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 136 transitions, 1211 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) [2024-06-04 14:08:21,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:21,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:21,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:21,619 INFO L124 PetriNetUnfolderBase]: 451/794 cut-off events. [2024-06-04 14:08:21,619 INFO L125 PetriNetUnfolderBase]: For 42512/42515 co-relation queries the response was YES. [2024-06-04 14:08:21,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5194 conditions, 794 events. 451/794 cut-off events. For 42512/42515 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3447 event pairs, 93 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 5112. Up to 681 conditions per place. [2024-06-04 14:08:21,646 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 121 selfloop transitions, 32 changer transitions 0/155 dead transitions. [2024-06-04 14:08:21,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 155 transitions, 1617 flow [2024-06-04 14:08:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:08:21,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-04 14:08:21,647 INFO L175 Difference]: Start difference. First operand has 161 places, 136 transitions, 1211 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:08:21,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 155 transitions, 1617 flow [2024-06-04 14:08:21,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 155 transitions, 1532 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:21,709 INFO L231 Difference]: Finished difference. Result has 163 places, 138 transitions, 1245 flow [2024-06-04 14:08:21,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1245, PETRI_PLACES=163, PETRI_TRANSITIONS=138} [2024-06-04 14:08:21,710 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 131 predicate places. [2024-06-04 14:08:21,710 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 138 transitions, 1245 flow [2024-06-04 14:08:21,717 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) [2024-06-04 14:08:21,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:21,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:21,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:08:21,718 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)] === [2024-06-04 14:08:21,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:21,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1549042896, now seen corresponding path program 4 times [2024-06-04 14:08:21,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:21,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187016096] [2024-06-04 14:08:21,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:21,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:25,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:25,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187016096] [2024-06-04 14:08:25,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187016096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:25,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:25,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:25,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629742693] [2024-06-04 14:08:25,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:25,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:25,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:25,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:25,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 138 transitions, 1245 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) [2024-06-04 14:08:25,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:25,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:25,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:25,789 INFO L124 PetriNetUnfolderBase]: 447/786 cut-off events. [2024-06-04 14:08:25,790 INFO L125 PetriNetUnfolderBase]: For 41021/41021 co-relation queries the response was YES. [2024-06-04 14:08:25,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5101 conditions, 786 events. 447/786 cut-off events. For 41021/41021 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3395 event pairs, 114 based on Foata normal form. 2/786 useless extension candidates. Maximal degree in co-relation 5018. Up to 748 conditions per place. [2024-06-04 14:08:25,795 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 133 selfloop transitions, 16 changer transitions 0/151 dead transitions. [2024-06-04 14:08:25,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 151 transitions, 1580 flow [2024-06-04 14:08:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:25,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-04 14:08:25,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-04 14:08:25,796 INFO L175 Difference]: Start difference. First operand has 163 places, 138 transitions, 1245 flow. Second operand 10 states and 99 transitions. [2024-06-04 14:08:25,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 151 transitions, 1580 flow [2024-06-04 14:08:25,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 151 transitions, 1455 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:25,861 INFO L231 Difference]: Finished difference. Result has 166 places, 139 transitions, 1167 flow [2024-06-04 14:08:25,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1167, PETRI_PLACES=166, PETRI_TRANSITIONS=139} [2024-06-04 14:08:25,861 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2024-06-04 14:08:25,861 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 139 transitions, 1167 flow [2024-06-04 14:08:25,861 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) [2024-06-04 14:08:25,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:25,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:25,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:08:25,862 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)] === [2024-06-04 14:08:25,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:25,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1549340124, now seen corresponding path program 10 times [2024-06-04 14:08:25,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:25,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164351333] [2024-06-04 14:08:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:25,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:28,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164351333] [2024-06-04 14:08:28,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164351333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:28,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:28,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:08:28,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820787827] [2024-06-04 14:08:28,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:28,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:08:28,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:08:28,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:08:28,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:28,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 139 transitions, 1167 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:28,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:28,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:28,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:29,431 INFO L124 PetriNetUnfolderBase]: 443/781 cut-off events. [2024-06-04 14:08:29,431 INFO L125 PetriNetUnfolderBase]: For 39367/39370 co-relation queries the response was YES. [2024-06-04 14:08:29,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4885 conditions, 781 events. 443/781 cut-off events. For 39367/39370 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3398 event pairs, 63 based on Foata normal form. 2/777 useless extension candidates. Maximal degree in co-relation 4800. Up to 458 conditions per place. [2024-06-04 14:08:29,436 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 85 selfloop transitions, 72 changer transitions 0/159 dead transitions. [2024-06-04 14:08:29,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 159 transitions, 1575 flow [2024-06-04 14:08:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 14:08:29,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-04 14:08:29,437 INFO L175 Difference]: Start difference. First operand has 166 places, 139 transitions, 1167 flow. Second operand 9 states and 107 transitions. [2024-06-04 14:08:29,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 159 transitions, 1575 flow [2024-06-04 14:08:29,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 159 transitions, 1534 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:29,499 INFO L231 Difference]: Finished difference. Result has 167 places, 141 transitions, 1325 flow [2024-06-04 14:08:29,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1325, PETRI_PLACES=167, PETRI_TRANSITIONS=141} [2024-06-04 14:08:29,499 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2024-06-04 14:08:29,499 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 141 transitions, 1325 flow [2024-06-04 14:08:29,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2024-06-04 14:08:29,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:29,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:29,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:08:29,500 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)] === [2024-06-04 14:08:29,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:29,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1549331196, now seen corresponding path program 5 times [2024-06-04 14:08:29,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:29,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665196133] [2024-06-04 14:08:29,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:29,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:33,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:33,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665196133] [2024-06-04 14:08:33,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665196133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:33,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:33,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:33,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456313343] [2024-06-04 14:08:33,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:33,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:33,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:33,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:33,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:33,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:33,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 141 transitions, 1325 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) [2024-06-04 14:08:33,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:33,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:33,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:33,880 INFO L124 PetriNetUnfolderBase]: 444/784 cut-off events. [2024-06-04 14:08:33,880 INFO L125 PetriNetUnfolderBase]: For 38642/38645 co-relation queries the response was YES. [2024-06-04 14:08:33,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5051 conditions, 784 events. 444/784 cut-off events. For 38642/38645 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3408 event pairs, 89 based on Foata normal form. 2/781 useless extension candidates. Maximal degree in co-relation 4965. Up to 643 conditions per place. [2024-06-04 14:08:33,885 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 117 selfloop transitions, 41 changer transitions 0/160 dead transitions. [2024-06-04 14:08:33,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 160 transitions, 1743 flow [2024-06-04 14:08:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:08:33,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-04 14:08:33,887 INFO L175 Difference]: Start difference. First operand has 167 places, 141 transitions, 1325 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:08:33,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 160 transitions, 1743 flow [2024-06-04 14:08:33,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 160 transitions, 1560 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:33,948 INFO L231 Difference]: Finished difference. Result has 170 places, 143 transitions, 1281 flow [2024-06-04 14:08:33,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1281, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2024-06-04 14:08:33,948 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 138 predicate places. [2024-06-04 14:08:33,948 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 1281 flow [2024-06-04 14:08:33,948 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) [2024-06-04 14:08:33,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:33,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:33,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:08:33,949 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)] === [2024-06-04 14:08:33,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:33,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1890882197, now seen corresponding path program 1 times [2024-06-04 14:08:33,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:33,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624146960] [2024-06-04 14:08:33,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:33,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:36,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:36,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624146960] [2024-06-04 14:08:36,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624146960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:36,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:36,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:36,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021465239] [2024-06-04 14:08:36,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:36,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:36,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:36,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:36,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:36,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:36,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 1281 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:36,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:36,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:36,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:36,986 INFO L124 PetriNetUnfolderBase]: 448/791 cut-off events. [2024-06-04 14:08:36,986 INFO L125 PetriNetUnfolderBase]: For 39609/39609 co-relation queries the response was YES. [2024-06-04 14:08:36,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4989 conditions, 791 events. 448/791 cut-off events. For 39609/39609 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3434 event pairs, 66 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 4902. Up to 678 conditions per place. [2024-06-04 14:08:36,991 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 141 selfloop transitions, 19 changer transitions 0/162 dead transitions. [2024-06-04 14:08:36,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 162 transitions, 1667 flow [2024-06-04 14:08:36,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:36,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 14:08:36,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-04 14:08:36,993 INFO L175 Difference]: Start difference. First operand has 170 places, 143 transitions, 1281 flow. Second operand 9 states and 96 transitions. [2024-06-04 14:08:36,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 162 transitions, 1667 flow [2024-06-04 14:08:37,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 162 transitions, 1544 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:37,057 INFO L231 Difference]: Finished difference. Result has 171 places, 144 transitions, 1220 flow [2024-06-04 14:08:37,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1220, PETRI_PLACES=171, PETRI_TRANSITIONS=144} [2024-06-04 14:08:37,058 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-04 14:08:37,058 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 144 transitions, 1220 flow [2024-06-04 14:08:37,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:37,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:37,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:37,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:08:37,058 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)] === [2024-06-04 14:08:37,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:37,059 INFO L85 PathProgramCache]: Analyzing trace with hash -754114789, now seen corresponding path program 2 times [2024-06-04 14:08:37,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:37,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413266522] [2024-06-04 14:08:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:37,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:39,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:39,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413266522] [2024-06-04 14:08:39,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413266522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:39,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:39,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:39,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282322945] [2024-06-04 14:08:39,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:39,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:39,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:39,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:39,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:39,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:39,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 144 transitions, 1220 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:39,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:39,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:39,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:40,338 INFO L124 PetriNetUnfolderBase]: 452/799 cut-off events. [2024-06-04 14:08:40,338 INFO L125 PetriNetUnfolderBase]: For 40796/40796 co-relation queries the response was YES. [2024-06-04 14:08:40,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4981 conditions, 799 events. 452/799 cut-off events. For 40796/40796 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3503 event pairs, 87 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 4893. Up to 682 conditions per place. [2024-06-04 14:08:40,344 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 136 selfloop transitions, 25 changer transitions 0/163 dead transitions. [2024-06-04 14:08:40,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 163 transitions, 1610 flow [2024-06-04 14:08:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:08:40,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:08:40,345 INFO L175 Difference]: Start difference. First operand has 171 places, 144 transitions, 1220 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:08:40,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 163 transitions, 1610 flow [2024-06-04 14:08:40,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 163 transitions, 1558 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:40,408 INFO L231 Difference]: Finished difference. Result has 173 places, 145 transitions, 1245 flow [2024-06-04 14:08:40,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1245, PETRI_PLACES=173, PETRI_TRANSITIONS=145} [2024-06-04 14:08:40,408 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2024-06-04 14:08:40,408 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 145 transitions, 1245 flow [2024-06-04 14:08:40,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:40,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:40,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:40,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:08:40,409 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)] === [2024-06-04 14:08:40,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:40,409 INFO L85 PathProgramCache]: Analyzing trace with hash -754118509, now seen corresponding path program 3 times [2024-06-04 14:08:40,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:40,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323273359] [2024-06-04 14:08:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:40,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:42,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:42,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323273359] [2024-06-04 14:08:42,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323273359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:42,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:42,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968310990] [2024-06-04 14:08:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:42,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:42,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:42,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:42,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:43,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:43,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 145 transitions, 1245 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) [2024-06-04 14:08:43,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:43,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:43,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:43,588 INFO L124 PetriNetUnfolderBase]: 456/807 cut-off events. [2024-06-04 14:08:43,588 INFO L125 PetriNetUnfolderBase]: For 42906/42906 co-relation queries the response was YES. [2024-06-04 14:08:43,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5061 conditions, 807 events. 456/807 cut-off events. For 42906/42906 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3581 event pairs, 85 based on Foata normal form. 2/807 useless extension candidates. Maximal degree in co-relation 4972. Up to 698 conditions per place. [2024-06-04 14:08:43,593 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 140 selfloop transitions, 22 changer transitions 0/164 dead transitions. [2024-06-04 14:08:43,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 164 transitions, 1639 flow [2024-06-04 14:08:43,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 14:08:43,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-04 14:08:43,594 INFO L175 Difference]: Start difference. First operand has 173 places, 145 transitions, 1245 flow. Second operand 9 states and 98 transitions. [2024-06-04 14:08:43,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 164 transitions, 1639 flow [2024-06-04 14:08:43,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 164 transitions, 1574 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:43,664 INFO L231 Difference]: Finished difference. Result has 175 places, 146 transitions, 1252 flow [2024-06-04 14:08:43,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1252, PETRI_PLACES=175, PETRI_TRANSITIONS=146} [2024-06-04 14:08:43,664 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2024-06-04 14:08:43,664 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 146 transitions, 1252 flow [2024-06-04 14:08:43,664 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) [2024-06-04 14:08:43,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:43,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:43,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:08:43,664 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)] === [2024-06-04 14:08:43,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:43,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1314723727, now seen corresponding path program 1 times [2024-06-04 14:08:43,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:43,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367386575] [2024-06-04 14:08:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:43,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:46,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:46,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367386575] [2024-06-04 14:08:46,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367386575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:46,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:46,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:46,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185258192] [2024-06-04 14:08:46,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:46,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:46,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:46,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:46,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:46,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:46,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 146 transitions, 1252 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:46,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:46,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:46,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:47,087 INFO L124 PetriNetUnfolderBase]: 462/817 cut-off events. [2024-06-04 14:08:47,087 INFO L125 PetriNetUnfolderBase]: For 44479/44479 co-relation queries the response was YES. [2024-06-04 14:08:47,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5127 conditions, 817 events. 462/817 cut-off events. For 44479/44479 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3637 event pairs, 88 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 5037. Up to 688 conditions per place. [2024-06-04 14:08:47,092 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 138 selfloop transitions, 28 changer transitions 0/168 dead transitions. [2024-06-04 14:08:47,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 168 transitions, 1678 flow [2024-06-04 14:08:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:47,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:08:47,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:08:47,094 INFO L175 Difference]: Start difference. First operand has 175 places, 146 transitions, 1252 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:08:47,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 168 transitions, 1678 flow [2024-06-04 14:08:47,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 168 transitions, 1616 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:47,200 INFO L231 Difference]: Finished difference. Result has 178 places, 148 transitions, 1297 flow [2024-06-04 14:08:47,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1297, PETRI_PLACES=178, PETRI_TRANSITIONS=148} [2024-06-04 14:08:47,200 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 146 predicate places. [2024-06-04 14:08:47,200 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 148 transitions, 1297 flow [2024-06-04 14:08:47,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:47,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:47,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:47,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:08:47,201 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)] === [2024-06-04 14:08:47,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:47,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1382649713, now seen corresponding path program 2 times [2024-06-04 14:08:47,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:47,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026421302] [2024-06-04 14:08:47,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:47,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:50,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:50,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026421302] [2024-06-04 14:08:50,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026421302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:50,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:50,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:50,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735665504] [2024-06-04 14:08:50,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:50,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:50,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:50,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:50,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:50,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 148 transitions, 1297 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) [2024-06-04 14:08:50,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:50,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:50,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:51,039 INFO L124 PetriNetUnfolderBase]: 468/826 cut-off events. [2024-06-04 14:08:51,040 INFO L125 PetriNetUnfolderBase]: For 46059/46059 co-relation queries the response was YES. [2024-06-04 14:08:51,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5238 conditions, 826 events. 468/826 cut-off events. For 46059/46059 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3680 event pairs, 76 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 5147. Up to 615 conditions per place. [2024-06-04 14:08:51,045 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 123 selfloop transitions, 46 changer transitions 0/171 dead transitions. [2024-06-04 14:08:51,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 171 transitions, 1735 flow [2024-06-04 14:08:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:08:51,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-04 14:08:51,046 INFO L175 Difference]: Start difference. First operand has 178 places, 148 transitions, 1297 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:08:51,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 171 transitions, 1735 flow [2024-06-04 14:08:51,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 171 transitions, 1644 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:51,126 INFO L231 Difference]: Finished difference. Result has 180 places, 150 transitions, 1353 flow [2024-06-04 14:08:51,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1353, PETRI_PLACES=180, PETRI_TRANSITIONS=150} [2024-06-04 14:08:51,127 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-04 14:08:51,127 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 150 transitions, 1353 flow [2024-06-04 14:08:51,127 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) [2024-06-04 14:08:51,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:51,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:51,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:08:51,128 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)] === [2024-06-04 14:08:51,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:51,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1382641994, now seen corresponding path program 1 times [2024-06-04 14:08:51,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:51,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773868624] [2024-06-04 14:08:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:51,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:54,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:54,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773868624] [2024-06-04 14:08:54,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773868624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:54,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:54,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:54,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608386767] [2024-06-04 14:08:54,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:54,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:54,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 150 transitions, 1353 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) [2024-06-04 14:08:54,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:54,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:54,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:54,882 INFO L124 PetriNetUnfolderBase]: 466/824 cut-off events. [2024-06-04 14:08:54,882 INFO L125 PetriNetUnfolderBase]: For 44770/44770 co-relation queries the response was YES. [2024-06-04 14:08:54,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5210 conditions, 824 events. 466/824 cut-off events. For 44770/44770 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3681 event pairs, 102 based on Foata normal form. 1/823 useless extension candidates. Maximal degree in co-relation 5118. Up to 729 conditions per place. [2024-06-04 14:08:54,889 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 138 selfloop transitions, 30 changer transitions 0/170 dead transitions. [2024-06-04 14:08:54,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 170 transitions, 1797 flow [2024-06-04 14:08:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:08:54,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-04 14:08:54,890 INFO L175 Difference]: Start difference. First operand has 180 places, 150 transitions, 1353 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:08:54,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 170 transitions, 1797 flow [2024-06-04 14:08:54,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 170 transitions, 1666 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:54,962 INFO L231 Difference]: Finished difference. Result has 182 places, 152 transitions, 1346 flow [2024-06-04 14:08:54,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1346, PETRI_PLACES=182, PETRI_TRANSITIONS=152} [2024-06-04 14:08:54,962 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2024-06-04 14:08:54,962 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 152 transitions, 1346 flow [2024-06-04 14:08:54,962 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) [2024-06-04 14:08:54,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:54,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:54,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:08:54,962 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)] === [2024-06-04 14:08:54,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1388364005, now seen corresponding path program 4 times [2024-06-04 14:08:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:54,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495693769] [2024-06-04 14:08:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:54,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:57,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:57,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495693769] [2024-06-04 14:08:57,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495693769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:57,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:57,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:57,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043296794] [2024-06-04 14:08:57,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:57,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:57,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:57,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:57,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:57,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 152 transitions, 1346 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) [2024-06-04 14:08:57,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:57,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:57,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:58,080 INFO L124 PetriNetUnfolderBase]: 470/831 cut-off events. [2024-06-04 14:08:58,080 INFO L125 PetriNetUnfolderBase]: For 47625/47625 co-relation queries the response was YES. [2024-06-04 14:08:58,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5211 conditions, 831 events. 470/831 cut-off events. For 47625/47625 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3715 event pairs, 80 based on Foata normal form. 2/831 useless extension candidates. Maximal degree in co-relation 5118. Up to 704 conditions per place. [2024-06-04 14:08:58,087 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 141 selfloop transitions, 27 changer transitions 0/170 dead transitions. [2024-06-04 14:08:58,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 170 transitions, 1748 flow [2024-06-04 14:08:58,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:08:58,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-04 14:08:58,088 INFO L175 Difference]: Start difference. First operand has 182 places, 152 transitions, 1346 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:08:58,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 170 transitions, 1748 flow [2024-06-04 14:08:58,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 170 transitions, 1644 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:58,160 INFO L231 Difference]: Finished difference. Result has 183 places, 153 transitions, 1326 flow [2024-06-04 14:08:58,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1326, PETRI_PLACES=183, PETRI_TRANSITIONS=153} [2024-06-04 14:08:58,160 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 151 predicate places. [2024-06-04 14:08:58,161 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 153 transitions, 1326 flow [2024-06-04 14:08:58,161 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) [2024-06-04 14:08:58,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:58,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:58,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:08:58,161 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)] === [2024-06-04 14:08:58,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:58,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1406801751, now seen corresponding path program 5 times [2024-06-04 14:08:58,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:58,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424587478] [2024-06-04 14:08:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:58,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:00,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:00,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424587478] [2024-06-04 14:09:00,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424587478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:00,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:00,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:00,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000559811] [2024-06-04 14:09:00,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:00,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:00,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:00,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:00,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:00,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:00,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 153 transitions, 1326 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) [2024-06-04 14:09:00,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:00,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:00,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:01,512 INFO L124 PetriNetUnfolderBase]: 474/839 cut-off events. [2024-06-04 14:09:01,513 INFO L125 PetriNetUnfolderBase]: For 48374/48374 co-relation queries the response was YES. [2024-06-04 14:09:01,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5233 conditions, 839 events. 474/839 cut-off events. For 48374/48374 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3772 event pairs, 79 based on Foata normal form. 2/839 useless extension candidates. Maximal degree in co-relation 5139. Up to 712 conditions per place. [2024-06-04 14:09:01,521 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 143 selfloop transitions, 26 changer transitions 0/171 dead transitions. [2024-06-04 14:09:01,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 171 transitions, 1732 flow [2024-06-04 14:09:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:09:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:09:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:09:01,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:09:01,523 INFO L175 Difference]: Start difference. First operand has 183 places, 153 transitions, 1326 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:09:01,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 171 transitions, 1732 flow [2024-06-04 14:09:01,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 171 transitions, 1658 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 14:09:01,619 INFO L231 Difference]: Finished difference. Result has 185 places, 154 transitions, 1336 flow [2024-06-04 14:09:01,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1336, PETRI_PLACES=185, PETRI_TRANSITIONS=154} [2024-06-04 14:09:01,620 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 153 predicate places. [2024-06-04 14:09:01,620 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 154 transitions, 1336 flow [2024-06-04 14:09:01,620 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) [2024-06-04 14:09:01,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:01,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:01,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:09:01,621 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)] === [2024-06-04 14:09:01,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:01,621 INFO L85 PathProgramCache]: Analyzing trace with hash 749258523, now seen corresponding path program 3 times [2024-06-04 14:09:01,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:01,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749606640] [2024-06-04 14:09:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:01,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:04,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:04,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749606640] [2024-06-04 14:09:04,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749606640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:04,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:04,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:04,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158398359] [2024-06-04 14:09:04,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:04,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:04,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:04,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:04,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:05,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:05,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 154 transitions, 1336 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) [2024-06-04 14:09:05,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:05,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:05,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:05,828 INFO L124 PetriNetUnfolderBase]: 490/865 cut-off events. [2024-06-04 14:09:05,829 INFO L125 PetriNetUnfolderBase]: For 54094/54094 co-relation queries the response was YES. [2024-06-04 14:09:05,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5553 conditions, 865 events. 490/865 cut-off events. For 54094/54094 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3912 event pairs, 77 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 5458. Up to 612 conditions per place. [2024-06-04 14:09:05,834 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 125 selfloop transitions, 54 changer transitions 0/181 dead transitions. [2024-06-04 14:09:05,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 181 transitions, 1976 flow [2024-06-04 14:09:05,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:09:05,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-04 14:09:05,835 INFO L175 Difference]: Start difference. First operand has 185 places, 154 transitions, 1336 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:09:05,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 181 transitions, 1976 flow [2024-06-04 14:09:05,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 181 transitions, 1902 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:09:05,917 INFO L231 Difference]: Finished difference. Result has 188 places, 158 transitions, 1480 flow [2024-06-04 14:09:05,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1480, PETRI_PLACES=188, PETRI_TRANSITIONS=158} [2024-06-04 14:09:05,918 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 156 predicate places. [2024-06-04 14:09:05,918 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 158 transitions, 1480 flow [2024-06-04 14:09:05,918 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) [2024-06-04 14:09:05,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:05,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:05,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:09:05,918 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)] === [2024-06-04 14:09:05,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:05,919 INFO L85 PathProgramCache]: Analyzing trace with hash 743686893, now seen corresponding path program 4 times [2024-06-04 14:09:05,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108521794] [2024-06-04 14:09:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:05,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:08,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:08,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108521794] [2024-06-04 14:09:08,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108521794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:08,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:08,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:08,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731892318] [2024-06-04 14:09:08,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:08,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:08,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:08,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:08,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:08,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:08,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 158 transitions, 1480 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) [2024-06-04 14:09:08,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:08,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:08,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:09,584 INFO L124 PetriNetUnfolderBase]: 496/875 cut-off events. [2024-06-04 14:09:09,584 INFO L125 PetriNetUnfolderBase]: For 56073/56073 co-relation queries the response was YES. [2024-06-04 14:09:09,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5739 conditions, 875 events. 496/875 cut-off events. For 56073/56073 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3969 event pairs, 84 based on Foata normal form. 2/875 useless extension candidates. Maximal degree in co-relation 5643. Up to 738 conditions per place. [2024-06-04 14:09:09,590 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 147 selfloop transitions, 30 changer transitions 0/179 dead transitions. [2024-06-04 14:09:09,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 179 transitions, 1934 flow [2024-06-04 14:09:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:09:09,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:09:09,591 INFO L175 Difference]: Start difference. First operand has 188 places, 158 transitions, 1480 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:09:09,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 179 transitions, 1934 flow [2024-06-04 14:09:09,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 179 transitions, 1802 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-04 14:09:09,679 INFO L231 Difference]: Finished difference. Result has 192 places, 160 transitions, 1471 flow [2024-06-04 14:09:09,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1471, PETRI_PLACES=192, PETRI_TRANSITIONS=160} [2024-06-04 14:09:09,679 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 160 predicate places. [2024-06-04 14:09:09,679 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 160 transitions, 1471 flow [2024-06-04 14:09:09,679 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) [2024-06-04 14:09:09,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:09,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:09,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:09:09,680 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)] === [2024-06-04 14:09:09,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:09,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1382857475, now seen corresponding path program 6 times [2024-06-04 14:09:09,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:09,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478711587] [2024-06-04 14:09:09,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:09,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:12,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:12,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478711587] [2024-06-04 14:09:12,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478711587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:12,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:12,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:12,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313086086] [2024-06-04 14:09:12,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:12,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:12,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:12,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:12,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:12,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:12,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 160 transitions, 1471 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) [2024-06-04 14:09:12,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:12,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:12,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:13,269 INFO L124 PetriNetUnfolderBase]: 500/883 cut-off events. [2024-06-04 14:09:13,269 INFO L125 PetriNetUnfolderBase]: For 57548/57548 co-relation queries the response was YES. [2024-06-04 14:09:13,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5772 conditions, 883 events. 500/883 cut-off events. For 57548/57548 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4034 event pairs, 82 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 5674. Up to 721 conditions per place. [2024-06-04 14:09:13,276 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 142 selfloop transitions, 35 changer transitions 0/179 dead transitions. [2024-06-04 14:09:13,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 179 transitions, 1899 flow [2024-06-04 14:09:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:09:13,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:09:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 14:09:13,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-04 14:09:13,277 INFO L175 Difference]: Start difference. First operand has 192 places, 160 transitions, 1471 flow. Second operand 9 states and 102 transitions. [2024-06-04 14:09:13,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 179 transitions, 1899 flow [2024-06-04 14:09:13,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 179 transitions, 1808 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:13,364 INFO L231 Difference]: Finished difference. Result has 193 places, 161 transitions, 1484 flow [2024-06-04 14:09:13,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1484, PETRI_PLACES=193, PETRI_TRANSITIONS=161} [2024-06-04 14:09:13,365 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 161 predicate places. [2024-06-04 14:09:13,365 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 161 transitions, 1484 flow [2024-06-04 14:09:13,365 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) [2024-06-04 14:09:13,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:13,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:13,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:09:13,365 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)] === [2024-06-04 14:09:13,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:13,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1382851523, now seen corresponding path program 5 times [2024-06-04 14:09:13,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:13,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12323493] [2024-06-04 14:09:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:13,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:16,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:16,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12323493] [2024-06-04 14:09:16,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12323493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:16,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:16,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:16,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328839032] [2024-06-04 14:09:16,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:16,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:16,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:16,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:16,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:16,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:16,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 161 transitions, 1484 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) [2024-06-04 14:09:16,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:16,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:16,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:17,094 INFO L124 PetriNetUnfolderBase]: 496/877 cut-off events. [2024-06-04 14:09:17,094 INFO L125 PetriNetUnfolderBase]: For 54754/54754 co-relation queries the response was YES. [2024-06-04 14:09:17,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5611 conditions, 877 events. 496/877 cut-off events. For 54754/54754 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4000 event pairs, 79 based on Foata normal form. 2/877 useless extension candidates. Maximal degree in co-relation 5512. Up to 705 conditions per place. [2024-06-04 14:09:17,100 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 141 selfloop transitions, 38 changer transitions 0/181 dead transitions. [2024-06-04 14:09:17,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 181 transitions, 1892 flow [2024-06-04 14:09:17,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:09:17,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-04 14:09:17,101 INFO L175 Difference]: Start difference. First operand has 193 places, 161 transitions, 1484 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:09:17,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 181 transitions, 1892 flow [2024-06-04 14:09:17,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 181 transitions, 1774 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-04 14:09:17,211 INFO L231 Difference]: Finished difference. Result has 196 places, 161 transitions, 1447 flow [2024-06-04 14:09:17,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1447, PETRI_PLACES=196, PETRI_TRANSITIONS=161} [2024-06-04 14:09:17,212 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places. [2024-06-04 14:09:17,212 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 161 transitions, 1447 flow [2024-06-04 14:09:17,212 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) [2024-06-04 14:09:17,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:17,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:17,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:09:17,212 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)] === [2024-06-04 14:09:17,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:17,212 INFO L85 PathProgramCache]: Analyzing trace with hash -341437775, now seen corresponding path program 1 times [2024-06-04 14:09:17,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:17,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714748287] [2024-06-04 14:09:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:17,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:20,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:20,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714748287] [2024-06-04 14:09:20,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714748287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:20,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:20,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:20,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275104127] [2024-06-04 14:09:20,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:20,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:20,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:20,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:20,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:20,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:20,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 161 transitions, 1447 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) [2024-06-04 14:09:20,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:20,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:20,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:20,876 INFO L124 PetriNetUnfolderBase]: 504/895 cut-off events. [2024-06-04 14:09:20,876 INFO L125 PetriNetUnfolderBase]: For 60788/60788 co-relation queries the response was YES. [2024-06-04 14:09:20,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5678 conditions, 895 events. 504/895 cut-off events. For 60788/60788 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4118 event pairs, 106 based on Foata normal form. 4/895 useless extension candidates. Maximal degree in co-relation 5578. Up to 800 conditions per place. [2024-06-04 14:09:20,882 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 160 selfloop transitions, 22 changer transitions 0/184 dead transitions. [2024-06-04 14:09:20,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 184 transitions, 1919 flow [2024-06-04 14:09:20,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:09:20,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:09:20,884 INFO L175 Difference]: Start difference. First operand has 196 places, 161 transitions, 1447 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:09:20,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 184 transitions, 1919 flow [2024-06-04 14:09:21,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 184 transitions, 1814 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:21,020 INFO L231 Difference]: Finished difference. Result has 198 places, 162 transitions, 1430 flow [2024-06-04 14:09:21,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1430, PETRI_PLACES=198, PETRI_TRANSITIONS=162} [2024-06-04 14:09:21,020 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 166 predicate places. [2024-06-04 14:09:21,020 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 162 transitions, 1430 flow [2024-06-04 14:09:21,020 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) [2024-06-04 14:09:21,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:21,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:21,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:09:21,021 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)] === [2024-06-04 14:09:21,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1376752863, now seen corresponding path program 7 times [2024-06-04 14:09:21,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:21,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581044831] [2024-06-04 14:09:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:21,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:23,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:23,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581044831] [2024-06-04 14:09:23,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581044831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:23,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:23,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:23,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865891658] [2024-06-04 14:09:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:23,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:23,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:23,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 162 transitions, 1430 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:23,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:23,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:23,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:24,443 INFO L124 PetriNetUnfolderBase]: 508/902 cut-off events. [2024-06-04 14:09:24,443 INFO L125 PetriNetUnfolderBase]: For 58657/58660 co-relation queries the response was YES. [2024-06-04 14:09:24,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5701 conditions, 902 events. 508/902 cut-off events. For 58657/58660 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4153 event pairs, 81 based on Foata normal form. 2/898 useless extension candidates. Maximal degree in co-relation 5600. Up to 745 conditions per place. [2024-06-04 14:09:24,450 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 146 selfloop transitions, 33 changer transitions 0/181 dead transitions. [2024-06-04 14:09:24,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 181 transitions, 1864 flow [2024-06-04 14:09:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:09:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:09:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 14:09:24,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-04 14:09:24,452 INFO L175 Difference]: Start difference. First operand has 198 places, 162 transitions, 1430 flow. Second operand 9 states and 104 transitions. [2024-06-04 14:09:24,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 181 transitions, 1864 flow [2024-06-04 14:09:24,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 181 transitions, 1786 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:24,564 INFO L231 Difference]: Finished difference. Result has 198 places, 163 transitions, 1454 flow [2024-06-04 14:09:24,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1454, PETRI_PLACES=198, PETRI_TRANSITIONS=163} [2024-06-04 14:09:24,565 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 166 predicate places. [2024-06-04 14:09:24,565 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 163 transitions, 1454 flow [2024-06-04 14:09:24,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:24,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:24,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:24,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:09:24,565 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)] === [2024-06-04 14:09:24,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:24,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1376968065, now seen corresponding path program 6 times [2024-06-04 14:09:24,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:24,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114518488] [2024-06-04 14:09:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:24,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:27,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:27,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114518488] [2024-06-04 14:09:27,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114518488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:27,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:27,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:27,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559336717] [2024-06-04 14:09:27,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:27,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:27,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:27,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:27,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:27,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:27,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 163 transitions, 1454 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) [2024-06-04 14:09:27,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:27,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:27,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:28,614 INFO L124 PetriNetUnfolderBase]: 524/928 cut-off events. [2024-06-04 14:09:28,614 INFO L125 PetriNetUnfolderBase]: For 65030/65033 co-relation queries the response was YES. [2024-06-04 14:09:28,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6052 conditions, 928 events. 524/928 cut-off events. For 65030/65033 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4308 event pairs, 81 based on Foata normal form. 2/924 useless extension candidates. Maximal degree in co-relation 5950. Up to 714 conditions per place. [2024-06-04 14:09:28,621 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 144 selfloop transitions, 44 changer transitions 0/190 dead transitions. [2024-06-04 14:09:28,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 190 transitions, 2132 flow [2024-06-04 14:09:28,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 14:09:28,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-04 14:09:28,622 INFO L175 Difference]: Start difference. First operand has 198 places, 163 transitions, 1454 flow. Second operand 10 states and 119 transitions. [2024-06-04 14:09:28,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 190 transitions, 2132 flow [2024-06-04 14:09:28,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 190 transitions, 2040 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 14:09:28,734 INFO L231 Difference]: Finished difference. Result has 201 places, 167 transitions, 1567 flow [2024-06-04 14:09:28,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1567, PETRI_PLACES=201, PETRI_TRANSITIONS=167} [2024-06-04 14:09:28,734 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2024-06-04 14:09:28,735 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 167 transitions, 1567 flow [2024-06-04 14:09:28,735 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) [2024-06-04 14:09:28,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:28,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:28,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:09:28,735 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)] === [2024-06-04 14:09:28,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash -840443381, now seen corresponding path program 7 times [2024-06-04 14:09:28,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:28,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826390532] [2024-06-04 14:09:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:28,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:31,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:31,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826390532] [2024-06-04 14:09:31,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826390532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:31,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:31,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:31,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909931610] [2024-06-04 14:09:31,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:31,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:31,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:32,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:32,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 167 transitions, 1567 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:32,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:32,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:32,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:32,645 INFO L124 PetriNetUnfolderBase]: 530/938 cut-off events. [2024-06-04 14:09:32,645 INFO L125 PetriNetUnfolderBase]: For 67234/67237 co-relation queries the response was YES. [2024-06-04 14:09:32,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6186 conditions, 938 events. 530/938 cut-off events. For 67234/67237 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4350 event pairs, 82 based on Foata normal form. 2/934 useless extension candidates. Maximal degree in co-relation 6083. Up to 749 conditions per place. [2024-06-04 14:09:32,652 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 147 selfloop transitions, 41 changer transitions 0/190 dead transitions. [2024-06-04 14:09:32,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 190 transitions, 2055 flow [2024-06-04 14:09:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:09:32,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:09:32,653 INFO L175 Difference]: Start difference. First operand has 201 places, 167 transitions, 1567 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:09:32,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 190 transitions, 2055 flow [2024-06-04 14:09:32,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 190 transitions, 1920 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 14:09:32,786 INFO L231 Difference]: Finished difference. Result has 205 places, 169 transitions, 1581 flow [2024-06-04 14:09:32,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1581, PETRI_PLACES=205, PETRI_TRANSITIONS=169} [2024-06-04 14:09:32,787 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 173 predicate places. [2024-06-04 14:09:32,787 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 169 transitions, 1581 flow [2024-06-04 14:09:32,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:32,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:32,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:32,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:09:32,787 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)] === [2024-06-04 14:09:32,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:32,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1040205583, now seen corresponding path program 8 times [2024-06-04 14:09:32,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:32,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125605344] [2024-06-04 14:09:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:32,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:35,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:35,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125605344] [2024-06-04 14:09:35,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125605344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:35,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:35,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632130199] [2024-06-04 14:09:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:35,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:35,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:35,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:35,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:36,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:36,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 169 transitions, 1581 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) [2024-06-04 14:09:36,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:36,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:36,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:36,755 INFO L124 PetriNetUnfolderBase]: 546/964 cut-off events. [2024-06-04 14:09:36,755 INFO L125 PetriNetUnfolderBase]: For 73882/73885 co-relation queries the response was YES. [2024-06-04 14:09:36,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6559 conditions, 964 events. 546/964 cut-off events. For 73882/73885 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4508 event pairs, 71 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 6454. Up to 704 conditions per place. [2024-06-04 14:09:36,763 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 138 selfloop transitions, 56 changer transitions 0/196 dead transitions. [2024-06-04 14:09:36,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 196 transitions, 2283 flow [2024-06-04 14:09:36,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:36,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:09:36,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:09:36,764 INFO L175 Difference]: Start difference. First operand has 205 places, 169 transitions, 1581 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:09:36,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 196 transitions, 2283 flow [2024-06-04 14:09:36,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 196 transitions, 2170 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:36,903 INFO L231 Difference]: Finished difference. Result has 207 places, 173 transitions, 1705 flow [2024-06-04 14:09:36,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1705, PETRI_PLACES=207, PETRI_TRANSITIONS=173} [2024-06-04 14:09:36,903 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2024-06-04 14:09:36,903 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 173 transitions, 1705 flow [2024-06-04 14:09:36,903 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) [2024-06-04 14:09:36,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:36,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:36,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:09:36,904 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)] === [2024-06-04 14:09:36,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1040213023, now seen corresponding path program 9 times [2024-06-04 14:09:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:36,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926253489] [2024-06-04 14:09:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:36,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:40,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:40,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926253489] [2024-06-04 14:09:40,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926253489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:40,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:40,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:40,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832880633] [2024-06-04 14:09:40,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:40,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:40,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:40,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:40,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:40,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:40,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 173 transitions, 1705 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:40,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:40,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:40,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:40,729 INFO L124 PetriNetUnfolderBase]: 552/974 cut-off events. [2024-06-04 14:09:40,729 INFO L125 PetriNetUnfolderBase]: For 76487/76490 co-relation queries the response was YES. [2024-06-04 14:09:40,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6723 conditions, 974 events. 552/974 cut-off events. For 76487/76490 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4572 event pairs, 71 based on Foata normal form. 2/970 useless extension candidates. Maximal degree in co-relation 6617. Up to 735 conditions per place. [2024-06-04 14:09:40,736 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 141 selfloop transitions, 53 changer transitions 0/196 dead transitions. [2024-06-04 14:09:40,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 196 transitions, 2209 flow [2024-06-04 14:09:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:09:40,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-04 14:09:40,737 INFO L175 Difference]: Start difference. First operand has 207 places, 173 transitions, 1705 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:09:40,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 196 transitions, 2209 flow [2024-06-04 14:09:40,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 196 transitions, 2045 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-04 14:09:40,883 INFO L231 Difference]: Finished difference. Result has 211 places, 175 transitions, 1718 flow [2024-06-04 14:09:40,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1718, PETRI_PLACES=211, PETRI_TRANSITIONS=175} [2024-06-04 14:09:40,883 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-04 14:09:40,884 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 175 transitions, 1718 flow [2024-06-04 14:09:40,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:40,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:40,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:40,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:09:40,884 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)] === [2024-06-04 14:09:40,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:40,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1498520669, now seen corresponding path program 10 times [2024-06-04 14:09:40,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:40,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404771614] [2024-06-04 14:09:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:40,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404771614] [2024-06-04 14:09:43,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404771614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:43,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:43,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:43,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253289500] [2024-06-04 14:09:43,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:43,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:43,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:43,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:43,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:43,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 175 transitions, 1718 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:43,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:43,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:43,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:44,458 INFO L124 PetriNetUnfolderBase]: 558/984 cut-off events. [2024-06-04 14:09:44,458 INFO L125 PetriNetUnfolderBase]: For 77762/77765 co-relation queries the response was YES. [2024-06-04 14:09:44,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6802 conditions, 984 events. 558/984 cut-off events. For 77762/77765 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4636 event pairs, 88 based on Foata normal form. 2/980 useless extension candidates. Maximal degree in co-relation 6694. Up to 817 conditions per place. [2024-06-04 14:09:44,465 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 159 selfloop transitions, 36 changer transitions 0/197 dead transitions. [2024-06-04 14:09:44,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 197 transitions, 2204 flow [2024-06-04 14:09:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:44,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:09:44,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-04 14:09:44,466 INFO L175 Difference]: Start difference. First operand has 211 places, 175 transitions, 1718 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:09:44,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 197 transitions, 2204 flow [2024-06-04 14:09:44,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 197 transitions, 2067 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:44,621 INFO L231 Difference]: Finished difference. Result has 213 places, 177 transitions, 1708 flow [2024-06-04 14:09:44,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1708, PETRI_PLACES=213, PETRI_TRANSITIONS=177} [2024-06-04 14:09:44,622 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 181 predicate places. [2024-06-04 14:09:44,622 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 177 transitions, 1708 flow [2024-06-04 14:09:44,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:44,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:44,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:44,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:09:44,622 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)] === [2024-06-04 14:09:44,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:44,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1504033151, now seen corresponding path program 8 times [2024-06-04 14:09:44,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:44,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511596516] [2024-06-04 14:09:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:44,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:47,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:47,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511596516] [2024-06-04 14:09:47,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511596516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:47,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:47,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:47,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615675751] [2024-06-04 14:09:47,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:47,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:47,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:47,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:47,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:47,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 177 transitions, 1708 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:47,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:47,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:47,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:48,116 INFO L124 PetriNetUnfolderBase]: 562/992 cut-off events. [2024-06-04 14:09:48,116 INFO L125 PetriNetUnfolderBase]: For 80200/80203 co-relation queries the response was YES. [2024-06-04 14:09:48,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6826 conditions, 992 events. 562/992 cut-off events. For 80200/80203 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4682 event pairs, 92 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 6717. Up to 849 conditions per place. [2024-06-04 14:09:48,123 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 162 selfloop transitions, 30 changer transitions 0/194 dead transitions. [2024-06-04 14:09:48,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 194 transitions, 2164 flow [2024-06-04 14:09:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:09:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:09:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:09:48,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-04 14:09:48,124 INFO L175 Difference]: Start difference. First operand has 213 places, 177 transitions, 1708 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:09:48,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 194 transitions, 2164 flow [2024-06-04 14:09:48,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 194 transitions, 2057 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:48,280 INFO L231 Difference]: Finished difference. Result has 214 places, 178 transitions, 1699 flow [2024-06-04 14:09:48,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1699, PETRI_PLACES=214, PETRI_TRANSITIONS=178} [2024-06-04 14:09:48,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 182 predicate places. [2024-06-04 14:09:48,280 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 178 transitions, 1699 flow [2024-06-04 14:09:48,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:48,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:48,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:48,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:09:48,281 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)] === [2024-06-04 14:09:48,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:48,282 INFO L85 PathProgramCache]: Analyzing trace with hash 379267027, now seen corresponding path program 9 times [2024-06-04 14:09:48,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:48,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066742420] [2024-06-04 14:09:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:48,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:51,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066742420] [2024-06-04 14:09:51,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066742420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:51,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:51,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:51,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175616534] [2024-06-04 14:09:51,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:51,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:51,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:51,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:51,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:51,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:51,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 178 transitions, 1699 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:51,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:51,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:51,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:51,837 INFO L124 PetriNetUnfolderBase]: 566/1000 cut-off events. [2024-06-04 14:09:51,838 INFO L125 PetriNetUnfolderBase]: For 82588/82591 co-relation queries the response was YES. [2024-06-04 14:09:51,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6877 conditions, 1000 events. 566/1000 cut-off events. For 82588/82591 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4741 event pairs, 75 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6767. Up to 785 conditions per place. [2024-06-04 14:09:51,846 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 147 selfloop transitions, 47 changer transitions 0/196 dead transitions. [2024-06-04 14:09:51,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 196 transitions, 2165 flow [2024-06-04 14:09:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:09:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:09:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:09:51,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-04 14:09:51,848 INFO L175 Difference]: Start difference. First operand has 214 places, 178 transitions, 1699 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:09:51,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 196 transitions, 2165 flow [2024-06-04 14:09:51,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 196 transitions, 2077 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 14:09:52,001 INFO L231 Difference]: Finished difference. Result has 216 places, 179 transitions, 1745 flow [2024-06-04 14:09:52,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1745, PETRI_PLACES=216, PETRI_TRANSITIONS=179} [2024-06-04 14:09:52,002 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 184 predicate places. [2024-06-04 14:09:52,002 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 179 transitions, 1745 flow [2024-06-04 14:09:52,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:52,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:52,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:52,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:09:52,002 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)] === [2024-06-04 14:09:52,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash 379272979, now seen corresponding path program 11 times [2024-06-04 14:09:52,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:52,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083046459] [2024-06-04 14:09:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:52,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:55,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:55,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083046459] [2024-06-04 14:09:55,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083046459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:55,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:55,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:55,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120933999] [2024-06-04 14:09:55,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:55,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:55,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:55,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:55,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:55,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:55,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 179 transitions, 1745 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:55,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:55,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:55,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:55,849 INFO L124 PetriNetUnfolderBase]: 562/994 cut-off events. [2024-06-04 14:09:55,849 INFO L125 PetriNetUnfolderBase]: For 78931/78934 co-relation queries the response was YES. [2024-06-04 14:09:55,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6720 conditions, 994 events. 562/994 cut-off events. For 78931/78934 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4715 event pairs, 75 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 6609. Up to 769 conditions per place. [2024-06-04 14:09:55,856 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 146 selfloop transitions, 50 changer transitions 0/198 dead transitions. [2024-06-04 14:09:55,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 198 transitions, 2185 flow [2024-06-04 14:09:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:09:55,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:09:55,857 INFO L175 Difference]: Start difference. First operand has 216 places, 179 transitions, 1745 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:09:55,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 198 transitions, 2185 flow [2024-06-04 14:09:56,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 198 transitions, 2029 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-04 14:09:56,061 INFO L231 Difference]: Finished difference. Result has 219 places, 179 transitions, 1694 flow [2024-06-04 14:09:56,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1694, PETRI_PLACES=219, PETRI_TRANSITIONS=179} [2024-06-04 14:09:56,062 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2024-06-04 14:09:56,062 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 179 transitions, 1694 flow [2024-06-04 14:09:56,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:56,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:56,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:56,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:09:56,062 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)] === [2024-06-04 14:09:56,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:56,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1908743669, now seen corresponding path program 10 times [2024-06-04 14:09:56,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:56,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383939480] [2024-06-04 14:09:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:56,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:58,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:58,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383939480] [2024-06-04 14:09:58,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383939480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:58,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:58,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:58,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634233333] [2024-06-04 14:09:58,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:58,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:58,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:58,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:58,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:58,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:58,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 179 transitions, 1694 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) [2024-06-04 14:09:58,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:58,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:58,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:59,451 INFO L124 PetriNetUnfolderBase]: 559/989 cut-off events. [2024-06-04 14:09:59,452 INFO L125 PetriNetUnfolderBase]: For 74628/74631 co-relation queries the response was YES. [2024-06-04 14:09:59,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6461 conditions, 989 events. 559/989 cut-off events. For 74628/74631 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4707 event pairs, 90 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 6349. Up to 846 conditions per place. [2024-06-04 14:09:59,460 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 164 selfloop transitions, 29 changer transitions 0/195 dead transitions. [2024-06-04 14:09:59,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 195 transitions, 2120 flow [2024-06-04 14:09:59,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:09:59,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:09:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:09:59,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:09:59,462 INFO L175 Difference]: Start difference. First operand has 219 places, 179 transitions, 1694 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:09:59,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 195 transitions, 2120 flow [2024-06-04 14:09:59,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 195 transitions, 2008 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:59,668 INFO L231 Difference]: Finished difference. Result has 219 places, 179 transitions, 1644 flow [2024-06-04 14:09:59,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1644, PETRI_PLACES=219, PETRI_TRANSITIONS=179} [2024-06-04 14:09:59,669 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2024-06-04 14:09:59,669 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 179 transitions, 1644 flow [2024-06-04 14:09:59,669 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) [2024-06-04 14:09:59,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:59,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:59,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:09:59,669 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)] === [2024-06-04 14:09:59,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1908589847, now seen corresponding path program 12 times [2024-06-04 14:09:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:59,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570287927] [2024-06-04 14:09:59,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:59,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:02,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:02,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570287927] [2024-06-04 14:10:02,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570287927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:02,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:02,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:10:02,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191660414] [2024-06-04 14:10:02,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:02,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:10:02,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:02,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:10:02,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:10:03,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:03,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 179 transitions, 1644 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:03,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:03,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:03,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:03,612 INFO L124 PetriNetUnfolderBase]: 555/983 cut-off events. [2024-06-04 14:10:03,612 INFO L125 PetriNetUnfolderBase]: For 70796/70799 co-relation queries the response was YES. [2024-06-04 14:10:03,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6213 conditions, 983 events. 555/983 cut-off events. For 70796/70799 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4671 event pairs, 92 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 6100. Up to 830 conditions per place. [2024-06-04 14:10:03,620 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 162 selfloop transitions, 33 changer transitions 0/197 dead transitions. [2024-06-04 14:10:03,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 197 transitions, 2078 flow [2024-06-04 14:10:03,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:10:03,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:10:03,621 INFO L175 Difference]: Start difference. First operand has 219 places, 179 transitions, 1644 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:10:03,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 197 transitions, 2078 flow [2024-06-04 14:10:03,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 197 transitions, 1922 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:03,803 INFO L231 Difference]: Finished difference. Result has 221 places, 179 transitions, 1559 flow [2024-06-04 14:10:03,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1559, PETRI_PLACES=221, PETRI_TRANSITIONS=179} [2024-06-04 14:10:03,803 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 189 predicate places. [2024-06-04 14:10:03,803 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 179 transitions, 1559 flow [2024-06-04 14:10:03,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:03,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:03,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:03,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:10:03,804 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)] === [2024-06-04 14:10:03,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:03,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1296952779, now seen corresponding path program 2 times [2024-06-04 14:10:03,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:03,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345744624] [2024-06-04 14:10:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:03,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:07,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:07,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345744624] [2024-06-04 14:10:07,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345744624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:07,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:07,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:07,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897489513] [2024-06-04 14:10:07,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:07,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:07,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:07,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:07,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:07,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:07,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 179 transitions, 1559 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) [2024-06-04 14:10:07,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:07,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:07,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:08,216 INFO L124 PetriNetUnfolderBase]: 563/1000 cut-off events. [2024-06-04 14:10:08,217 INFO L125 PetriNetUnfolderBase]: For 78463/78466 co-relation queries the response was YES. [2024-06-04 14:10:08,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6213 conditions, 1000 events. 563/1000 cut-off events. For 78463/78466 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4782 event pairs, 115 based on Foata normal form. 4/999 useless extension candidates. Maximal degree in co-relation 6099. Up to 891 conditions per place. [2024-06-04 14:10:08,224 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 172 selfloop transitions, 26 changer transitions 0/200 dead transitions. [2024-06-04 14:10:08,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 200 transitions, 2057 flow [2024-06-04 14:10:08,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:08,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:10:08,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:10:08,225 INFO L175 Difference]: Start difference. First operand has 221 places, 179 transitions, 1559 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:10:08,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 200 transitions, 2057 flow [2024-06-04 14:10:08,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 200 transitions, 1912 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-04 14:10:08,414 INFO L231 Difference]: Finished difference. Result has 220 places, 180 transitions, 1512 flow [2024-06-04 14:10:08,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1512, PETRI_PLACES=220, PETRI_TRANSITIONS=180} [2024-06-04 14:10:08,414 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 188 predicate places. [2024-06-04 14:10:08,414 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 180 transitions, 1512 flow [2024-06-04 14:10:08,414 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) [2024-06-04 14:10:08,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:08,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:08,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:10:08,415 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)] === [2024-06-04 14:10:08,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:08,415 INFO L85 PathProgramCache]: Analyzing trace with hash -470935665, now seen corresponding path program 13 times [2024-06-04 14:10:08,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:08,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506899428] [2024-06-04 14:10:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:08,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:11,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:11,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506899428] [2024-06-04 14:10:11,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506899428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:11,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:11,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:11,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069783298] [2024-06-04 14:10:11,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:11,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:11,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:11,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:11,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:11,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:11,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 180 transitions, 1512 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) [2024-06-04 14:10:11,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:11,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:11,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:12,676 INFO L124 PetriNetUnfolderBase]: 575/1019 cut-off events. [2024-06-04 14:10:12,676 INFO L125 PetriNetUnfolderBase]: For 80804/80807 co-relation queries the response was YES. [2024-06-04 14:10:12,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6185 conditions, 1019 events. 575/1019 cut-off events. For 80804/80807 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4897 event pairs, 60 based on Foata normal form. 4/1017 useless extension candidates. Maximal degree in co-relation 6073. Up to 406 conditions per place. [2024-06-04 14:10:12,684 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 106 selfloop transitions, 100 changer transitions 0/208 dead transitions. [2024-06-04 14:10:12,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 208 transitions, 2282 flow [2024-06-04 14:10:12,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:10:12,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-04 14:10:12,685 INFO L175 Difference]: Start difference. First operand has 220 places, 180 transitions, 1512 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:10:12,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 208 transitions, 2282 flow [2024-06-04 14:10:12,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 208 transitions, 2196 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:12,835 INFO L231 Difference]: Finished difference. Result has 221 places, 185 transitions, 1759 flow [2024-06-04 14:10:12,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1759, PETRI_PLACES=221, PETRI_TRANSITIONS=185} [2024-06-04 14:10:12,836 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 189 predicate places. [2024-06-04 14:10:12,836 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 185 transitions, 1759 flow [2024-06-04 14:10:12,836 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) [2024-06-04 14:10:12,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:12,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:12,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:10:12,836 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)] === [2024-06-04 14:10:12,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:12,837 INFO L85 PathProgramCache]: Analyzing trace with hash 645506559, now seen corresponding path program 3 times [2024-06-04 14:10:12,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:12,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967486219] [2024-06-04 14:10:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:12,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:16,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:16,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967486219] [2024-06-04 14:10:16,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967486219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:16,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:16,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:16,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718548345] [2024-06-04 14:10:16,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:16,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:16,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:16,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:16,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:16,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:16,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 185 transitions, 1759 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) [2024-06-04 14:10:16,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:16,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:16,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:16,946 INFO L124 PetriNetUnfolderBase]: 583/1034 cut-off events. [2024-06-04 14:10:16,946 INFO L125 PetriNetUnfolderBase]: For 83198/83198 co-relation queries the response was YES. [2024-06-04 14:10:16,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6516 conditions, 1034 events. 583/1034 cut-off events. For 83198/83198 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4995 event pairs, 139 based on Foata normal form. 4/1036 useless extension candidates. Maximal degree in co-relation 6403. Up to 971 conditions per place. [2024-06-04 14:10:16,955 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 180 selfloop transitions, 20 changer transitions 0/202 dead transitions. [2024-06-04 14:10:16,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 202 transitions, 2243 flow [2024-06-04 14:10:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:16,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:16,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-04 14:10:16,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30578512396694213 [2024-06-04 14:10:16,956 INFO L175 Difference]: Start difference. First operand has 221 places, 185 transitions, 1759 flow. Second operand 11 states and 111 transitions. [2024-06-04 14:10:16,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 202 transitions, 2243 flow [2024-06-04 14:10:17,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 202 transitions, 2066 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-04 14:10:17,122 INFO L231 Difference]: Finished difference. Result has 226 places, 186 transitions, 1668 flow [2024-06-04 14:10:17,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1668, PETRI_PLACES=226, PETRI_TRANSITIONS=186} [2024-06-04 14:10:17,123 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 194 predicate places. [2024-06-04 14:10:17,123 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 186 transitions, 1668 flow [2024-06-04 14:10:17,123 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) [2024-06-04 14:10:17,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:17,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:17,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:10:17,124 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)] === [2024-06-04 14:10:17,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:17,124 INFO L85 PathProgramCache]: Analyzing trace with hash 386901459, now seen corresponding path program 4 times [2024-06-04 14:10:17,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:17,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940180183] [2024-06-04 14:10:17,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:17,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:20,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:20,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:20,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940180183] [2024-06-04 14:10:20,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940180183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:20,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:20,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:20,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884769171] [2024-06-04 14:10:20,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:20,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:20,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:20,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:20,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:20,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:20,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 186 transitions, 1668 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) [2024-06-04 14:10:20,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:20,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:20,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:21,277 INFO L124 PetriNetUnfolderBase]: 591/1052 cut-off events. [2024-06-04 14:10:21,277 INFO L125 PetriNetUnfolderBase]: For 84890/84893 co-relation queries the response was YES. [2024-06-04 14:10:21,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6467 conditions, 1052 events. 591/1052 cut-off events. For 84890/84893 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5154 event pairs, 113 based on Foata normal form. 4/1051 useless extension candidates. Maximal degree in co-relation 6352. Up to 923 conditions per place. [2024-06-04 14:10:21,286 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 172 selfloop transitions, 33 changer transitions 0/207 dead transitions. [2024-06-04 14:10:21,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 207 transitions, 2182 flow [2024-06-04 14:10:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:21,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:10:21,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:10:21,287 INFO L175 Difference]: Start difference. First operand has 226 places, 186 transitions, 1668 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:10:21,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 207 transitions, 2182 flow [2024-06-04 14:10:21,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 207 transitions, 2098 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-04 14:10:21,463 INFO L231 Difference]: Finished difference. Result has 227 places, 187 transitions, 1698 flow [2024-06-04 14:10:21,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1698, PETRI_PLACES=227, PETRI_TRANSITIONS=187} [2024-06-04 14:10:21,464 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 195 predicate places. [2024-06-04 14:10:21,464 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 187 transitions, 1698 flow [2024-06-04 14:10:21,464 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) [2024-06-04 14:10:21,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:21,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:21,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:10:21,464 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)] === [2024-06-04 14:10:21,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash -784894365, now seen corresponding path program 14 times [2024-06-04 14:10:21,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:21,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525349248] [2024-06-04 14:10:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:21,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:25,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:25,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525349248] [2024-06-04 14:10:25,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525349248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:25,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:25,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:25,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792676603] [2024-06-04 14:10:25,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:25,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:25,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:25,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:25,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:25,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:25,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 187 transitions, 1698 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) [2024-06-04 14:10:25,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:25,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:25,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:25,915 INFO L124 PetriNetUnfolderBase]: 597/1061 cut-off events. [2024-06-04 14:10:25,915 INFO L125 PetriNetUnfolderBase]: For 80060/80063 co-relation queries the response was YES. [2024-06-04 14:10:25,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6549 conditions, 1061 events. 597/1061 cut-off events. For 80060/80063 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5184 event pairs, 69 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 6434. Up to 713 conditions per place. [2024-06-04 14:10:25,924 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 135 selfloop transitions, 77 changer transitions 0/214 dead transitions. [2024-06-04 14:10:25,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 214 transitions, 2456 flow [2024-06-04 14:10:25,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 14:10:25,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-04 14:10:25,925 INFO L175 Difference]: Start difference. First operand has 227 places, 187 transitions, 1698 flow. Second operand 10 states and 121 transitions. [2024-06-04 14:10:25,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 214 transitions, 2456 flow [2024-06-04 14:10:26,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 214 transitions, 2352 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:26,124 INFO L231 Difference]: Finished difference. Result has 228 places, 191 transitions, 1869 flow [2024-06-04 14:10:26,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1869, PETRI_PLACES=228, PETRI_TRANSITIONS=191} [2024-06-04 14:10:26,125 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 196 predicate places. [2024-06-04 14:10:26,125 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 191 transitions, 1869 flow [2024-06-04 14:10:26,126 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) [2024-06-04 14:10:26,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:26,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:26,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:10:26,126 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)] === [2024-06-04 14:10:26,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:26,127 INFO L85 PathProgramCache]: Analyzing trace with hash -459497905, now seen corresponding path program 5 times [2024-06-04 14:10:26,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:26,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120518661] [2024-06-04 14:10:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:29,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:29,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120518661] [2024-06-04 14:10:29,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120518661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:29,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:29,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:29,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072428910] [2024-06-04 14:10:29,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:29,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:29,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:29,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:29,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:29,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:29,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 191 transitions, 1869 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) [2024-06-04 14:10:29,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:29,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:29,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:29,914 INFO L124 PetriNetUnfolderBase]: 619/1102 cut-off events. [2024-06-04 14:10:29,914 INFO L125 PetriNetUnfolderBase]: For 103391/103391 co-relation queries the response was YES. [2024-06-04 14:10:29,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7288 conditions, 1102 events. 619/1102 cut-off events. For 103391/103391 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5452 event pairs, 147 based on Foata normal form. 4/1104 useless extension candidates. Maximal degree in co-relation 7172. Up to 993 conditions per place. [2024-06-04 14:10:29,924 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 187 selfloop transitions, 22 changer transitions 0/211 dead transitions. [2024-06-04 14:10:29,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 211 transitions, 2587 flow [2024-06-04 14:10:29,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 14:10:29,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3085399449035813 [2024-06-04 14:10:29,925 INFO L175 Difference]: Start difference. First operand has 228 places, 191 transitions, 1869 flow. Second operand 11 states and 112 transitions. [2024-06-04 14:10:29,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 211 transitions, 2587 flow [2024-06-04 14:10:30,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 211 transitions, 2422 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 14:10:30,138 INFO L231 Difference]: Finished difference. Result has 233 places, 193 transitions, 1842 flow [2024-06-04 14:10:30,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1842, PETRI_PLACES=233, PETRI_TRANSITIONS=193} [2024-06-04 14:10:30,139 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 201 predicate places. [2024-06-04 14:10:30,139 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 193 transitions, 1842 flow [2024-06-04 14:10:30,139 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) [2024-06-04 14:10:30,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:30,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:30,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:10:30,140 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)] === [2024-06-04 14:10:30,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash -784901805, now seen corresponding path program 15 times [2024-06-04 14:10:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:30,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890698594] [2024-06-04 14:10:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:30,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:33,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:33,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890698594] [2024-06-04 14:10:33,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890698594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:33,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:33,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:10:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926742189] [2024-06-04 14:10:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:33,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:10:33,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:33,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:10:33,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:10:33,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:33,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 193 transitions, 1842 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:33,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:33,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:33,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:34,241 INFO L124 PetriNetUnfolderBase]: 615/1097 cut-off events. [2024-06-04 14:10:34,241 INFO L125 PetriNetUnfolderBase]: For 91343/91346 co-relation queries the response was YES. [2024-06-04 14:10:34,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6975 conditions, 1097 events. 615/1097 cut-off events. For 91343/91346 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5439 event pairs, 79 based on Foata normal form. 2/1093 useless extension candidates. Maximal degree in co-relation 6857. Up to 766 conditions per place. [2024-06-04 14:10:34,248 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 74 changer transitions 0/213 dead transitions. [2024-06-04 14:10:34,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 213 transitions, 2316 flow [2024-06-04 14:10:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:10:34,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:10:34,249 INFO L175 Difference]: Start difference. First operand has 233 places, 193 transitions, 1842 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:10:34,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 213 transitions, 2316 flow [2024-06-04 14:10:34,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 213 transitions, 2211 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-04 14:10:34,454 INFO L231 Difference]: Finished difference. Result has 236 places, 193 transitions, 1890 flow [2024-06-04 14:10:34,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1890, PETRI_PLACES=236, PETRI_TRANSITIONS=193} [2024-06-04 14:10:34,454 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 204 predicate places. [2024-06-04 14:10:34,454 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 193 transitions, 1890 flow [2024-06-04 14:10:34,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:34,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:34,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:34,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:10:34,455 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)] === [2024-06-04 14:10:34,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:34,455 INFO L85 PathProgramCache]: Analyzing trace with hash 635062837, now seen corresponding path program 6 times [2024-06-04 14:10:34,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:34,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449284512] [2024-06-04 14:10:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:34,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:37,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:37,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449284512] [2024-06-04 14:10:37,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449284512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:37,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:37,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:37,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615979215] [2024-06-04 14:10:37,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:37,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:37,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:38,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:38,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 193 transitions, 1890 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) [2024-06-04 14:10:38,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:38,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:38,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:38,664 INFO L124 PetriNetUnfolderBase]: 616/1101 cut-off events. [2024-06-04 14:10:38,664 INFO L125 PetriNetUnfolderBase]: For 93461/93464 co-relation queries the response was YES. [2024-06-04 14:10:38,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6991 conditions, 1101 events. 616/1101 cut-off events. For 93461/93464 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5489 event pairs, 121 based on Foata normal form. 4/1100 useless extension candidates. Maximal degree in co-relation 6871. Up to 944 conditions per place. [2024-06-04 14:10:38,673 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 170 selfloop transitions, 42 changer transitions 0/214 dead transitions. [2024-06-04 14:10:38,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 214 transitions, 2422 flow [2024-06-04 14:10:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:10:38,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:10:38,674 INFO L175 Difference]: Start difference. First operand has 236 places, 193 transitions, 1890 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:10:38,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 214 transitions, 2422 flow [2024-06-04 14:10:38,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 214 transitions, 2269 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:38,871 INFO L231 Difference]: Finished difference. Result has 238 places, 194 transitions, 1873 flow [2024-06-04 14:10:38,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1873, PETRI_PLACES=238, PETRI_TRANSITIONS=194} [2024-06-04 14:10:38,871 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2024-06-04 14:10:38,871 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 194 transitions, 1873 flow [2024-06-04 14:10:38,871 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) [2024-06-04 14:10:38,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:38,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:38,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:10:38,872 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)] === [2024-06-04 14:10:38,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 948762067, now seen corresponding path program 7 times [2024-06-04 14:10:38,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:38,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756519109] [2024-06-04 14:10:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:38,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:42,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:42,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756519109] [2024-06-04 14:10:42,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756519109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:42,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:42,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:42,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973611857] [2024-06-04 14:10:42,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:42,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:42,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:42,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:42,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:43,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:43,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 194 transitions, 1873 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) [2024-06-04 14:10:43,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:43,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:43,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:43,601 INFO L124 PetriNetUnfolderBase]: 610/1089 cut-off events. [2024-06-04 14:10:43,601 INFO L125 PetriNetUnfolderBase]: For 81140/81140 co-relation queries the response was YES. [2024-06-04 14:10:43,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6503 conditions, 1089 events. 610/1089 cut-off events. For 81140/81140 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5410 event pairs, 155 based on Foata normal form. 4/1091 useless extension candidates. Maximal degree in co-relation 6382. Up to 1035 conditions per place. [2024-06-04 14:10:43,609 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 190 selfloop transitions, 17 changer transitions 0/209 dead transitions. [2024-06-04 14:10:43,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 209 transitions, 2327 flow [2024-06-04 14:10:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-04 14:10:43,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2975206611570248 [2024-06-04 14:10:43,611 INFO L175 Difference]: Start difference. First operand has 238 places, 194 transitions, 1873 flow. Second operand 11 states and 108 transitions. [2024-06-04 14:10:43,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 209 transitions, 2327 flow [2024-06-04 14:10:43,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 209 transitions, 2165 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:43,795 INFO L231 Difference]: Finished difference. Result has 240 places, 194 transitions, 1749 flow [2024-06-04 14:10:43,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1749, PETRI_PLACES=240, PETRI_TRANSITIONS=194} [2024-06-04 14:10:43,795 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2024-06-04 14:10:43,795 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 194 transitions, 1749 flow [2024-06-04 14:10:43,795 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) [2024-06-04 14:10:43,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:43,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:43,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:10:43,796 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)] === [2024-06-04 14:10:43,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1960927997, now seen corresponding path program 1 times [2024-06-04 14:10:43,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:43,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496067303] [2024-06-04 14:10:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:43,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496067303] [2024-06-04 14:10:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496067303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891596975] [2024-06-04 14:10:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:46,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:46,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:46,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 194 transitions, 1749 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) [2024-06-04 14:10:46,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:46,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:46,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:47,275 INFO L124 PetriNetUnfolderBase]: 614/1098 cut-off events. [2024-06-04 14:10:47,275 INFO L125 PetriNetUnfolderBase]: For 73870/73870 co-relation queries the response was YES. [2024-06-04 14:10:47,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6358 conditions, 1098 events. 614/1098 cut-off events. For 73870/73870 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5482 event pairs, 112 based on Foata normal form. 2/1098 useless extension candidates. Maximal degree in co-relation 6236. Up to 977 conditions per place. [2024-06-04 14:10:47,286 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 193 selfloop transitions, 20 changer transitions 0/215 dead transitions. [2024-06-04 14:10:47,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 215 transitions, 2249 flow [2024-06-04 14:10:47,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-04 14:10:47,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-06-04 14:10:47,287 INFO L175 Difference]: Start difference. First operand has 240 places, 194 transitions, 1749 flow. Second operand 10 states and 104 transitions. [2024-06-04 14:10:47,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 215 transitions, 2249 flow [2024-06-04 14:10:47,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 215 transitions, 2209 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:10:47,446 INFO L231 Difference]: Finished difference. Result has 240 places, 195 transitions, 1777 flow [2024-06-04 14:10:47,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1777, PETRI_PLACES=240, PETRI_TRANSITIONS=195} [2024-06-04 14:10:47,446 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2024-06-04 14:10:47,446 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 195 transitions, 1777 flow [2024-06-04 14:10:47,446 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) [2024-06-04 14:10:47,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:47,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:47,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:10:47,447 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)] === [2024-06-04 14:10:47,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:47,447 INFO L85 PathProgramCache]: Analyzing trace with hash 673908013, now seen corresponding path program 2 times [2024-06-04 14:10:47,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:47,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006586825] [2024-06-04 14:10:47,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:47,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:50,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:50,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006586825] [2024-06-04 14:10:50,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006586825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:50,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:50,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:50,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719928862] [2024-06-04 14:10:50,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:50,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:50,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:50,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:50,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:50,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:50,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 195 transitions, 1777 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) [2024-06-04 14:10:50,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:50,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:50,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:51,474 INFO L124 PetriNetUnfolderBase]: 618/1106 cut-off events. [2024-06-04 14:10:51,474 INFO L125 PetriNetUnfolderBase]: For 75756/75756 co-relation queries the response was YES. [2024-06-04 14:10:51,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6460 conditions, 1106 events. 618/1106 cut-off events. For 75756/75756 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5519 event pairs, 132 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 6337. Up to 979 conditions per place. [2024-06-04 14:10:51,484 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 187 selfloop transitions, 27 changer transitions 0/216 dead transitions. [2024-06-04 14:10:51,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 216 transitions, 2281 flow [2024-06-04 14:10:51,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:10:51,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-04 14:10:51,486 INFO L175 Difference]: Start difference. First operand has 240 places, 195 transitions, 1777 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:10:51,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 216 transitions, 2281 flow [2024-06-04 14:10:51,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 216 transitions, 2223 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:51,670 INFO L231 Difference]: Finished difference. Result has 242 places, 196 transitions, 1803 flow [2024-06-04 14:10:51,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1803, PETRI_PLACES=242, PETRI_TRANSITIONS=196} [2024-06-04 14:10:51,670 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 210 predicate places. [2024-06-04 14:10:51,670 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 196 transitions, 1803 flow [2024-06-04 14:10:51,670 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) [2024-06-04 14:10:51,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:51,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:51,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:10:51,671 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)] === [2024-06-04 14:10:51,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1510211239, now seen corresponding path program 3 times [2024-06-04 14:10:51,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:51,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31246622] [2024-06-04 14:10:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:51,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:54,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:54,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31246622] [2024-06-04 14:10:54,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31246622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:54,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:54,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:54,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135145523] [2024-06-04 14:10:54,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:54,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:54,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:54,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:54,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:54,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:54,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 196 transitions, 1803 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) [2024-06-04 14:10:54,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:54,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:54,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:55,515 INFO L124 PetriNetUnfolderBase]: 622/1114 cut-off events. [2024-06-04 14:10:55,515 INFO L125 PetriNetUnfolderBase]: For 78534/78534 co-relation queries the response was YES. [2024-06-04 14:10:55,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6535 conditions, 1114 events. 622/1114 cut-off events. For 78534/78534 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5598 event pairs, 132 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 6411. Up to 989 conditions per place. [2024-06-04 14:10:55,525 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 189 selfloop transitions, 26 changer transitions 0/217 dead transitions. [2024-06-04 14:10:55,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 217 transitions, 2311 flow [2024-06-04 14:10:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:10:55,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-04 14:10:55,526 INFO L175 Difference]: Start difference. First operand has 242 places, 196 transitions, 1803 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:10:55,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 217 transitions, 2311 flow [2024-06-04 14:10:55,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 217 transitions, 2237 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:55,706 INFO L231 Difference]: Finished difference. Result has 244 places, 197 transitions, 1813 flow [2024-06-04 14:10:55,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1813, PETRI_PLACES=244, PETRI_TRANSITIONS=197} [2024-06-04 14:10:55,707 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 212 predicate places. [2024-06-04 14:10:55,707 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 197 transitions, 1813 flow [2024-06-04 14:10:55,707 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) [2024-06-04 14:10:55,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:55,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:55,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:10:55,707 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)] === [2024-06-04 14:10:55,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1902835547, now seen corresponding path program 4 times [2024-06-04 14:10:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:55,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635101275] [2024-06-04 14:10:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:55,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:58,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:58,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635101275] [2024-06-04 14:10:58,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635101275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:58,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:58,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:58,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321017706] [2024-06-04 14:10:58,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:58,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:58,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:58,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:58,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:58,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:58,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 197 transitions, 1813 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) [2024-06-04 14:10:58,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:58,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:58,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:59,316 INFO L124 PetriNetUnfolderBase]: 626/1122 cut-off events. [2024-06-04 14:10:59,316 INFO L125 PetriNetUnfolderBase]: For 80506/80506 co-relation queries the response was YES. [2024-06-04 14:10:59,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6588 conditions, 1122 events. 626/1122 cut-off events. For 80506/80506 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5652 event pairs, 130 based on Foata normal form. 2/1122 useless extension candidates. Maximal degree in co-relation 6463. Up to 1005 conditions per place. [2024-06-04 14:10:59,323 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 193 selfloop transitions, 23 changer transitions 0/218 dead transitions. [2024-06-04 14:10:59,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 218 transitions, 2325 flow [2024-06-04 14:10:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:10:59,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-04 14:10:59,324 INFO L175 Difference]: Start difference. First operand has 244 places, 197 transitions, 1813 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:10:59,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 218 transitions, 2325 flow [2024-06-04 14:10:59,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 218 transitions, 2251 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:59,517 INFO L231 Difference]: Finished difference. Result has 246 places, 198 transitions, 1819 flow [2024-06-04 14:10:59,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1819, PETRI_PLACES=246, PETRI_TRANSITIONS=198} [2024-06-04 14:10:59,518 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-04 14:10:59,518 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 198 transitions, 1819 flow [2024-06-04 14:10:59,518 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) [2024-06-04 14:10:59,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:59,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:59,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:10:59,518 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)] === [2024-06-04 14:10:59,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash 789379107, now seen corresponding path program 1 times [2024-06-04 14:10:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:59,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609664032] [2024-06-04 14:10:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:59,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:03,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609664032] [2024-06-04 14:11:03,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609664032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:03,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:03,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:03,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68167567] [2024-06-04 14:11:03,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:03,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:03,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:03,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:03,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 198 transitions, 1819 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) [2024-06-04 14:11:03,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:03,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:03,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:04,284 INFO L124 PetriNetUnfolderBase]: 632/1132 cut-off events. [2024-06-04 14:11:04,284 INFO L125 PetriNetUnfolderBase]: For 82450/82450 co-relation queries the response was YES. [2024-06-04 14:11:04,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6643 conditions, 1132 events. 632/1132 cut-off events. For 82450/82450 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5728 event pairs, 133 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 6517. Up to 995 conditions per place. [2024-06-04 14:11:04,291 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 190 selfloop transitions, 30 changer transitions 0/222 dead transitions. [2024-06-04 14:11:04,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 222 transitions, 2363 flow [2024-06-04 14:11:04,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:11:04,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:11:04,293 INFO L175 Difference]: Start difference. First operand has 246 places, 198 transitions, 1819 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:11:04,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 222 transitions, 2363 flow [2024-06-04 14:11:04,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 222 transitions, 2293 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:04,492 INFO L231 Difference]: Finished difference. Result has 249 places, 200 transitions, 1866 flow [2024-06-04 14:11:04,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1866, PETRI_PLACES=249, PETRI_TRANSITIONS=200} [2024-06-04 14:11:04,492 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2024-06-04 14:11:04,492 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 200 transitions, 1866 flow [2024-06-04 14:11:04,492 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) [2024-06-04 14:11:04,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:04,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:04,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:11:04,493 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)] === [2024-06-04 14:11:04,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1751941963, now seen corresponding path program 5 times [2024-06-04 14:11:04,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:04,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863134514] [2024-06-04 14:11:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:07,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:07,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863134514] [2024-06-04 14:11:07,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863134514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:07,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:07,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:07,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502356913] [2024-06-04 14:11:07,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:07,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:07,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:07,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:07,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:07,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:07,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 200 transitions, 1866 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) [2024-06-04 14:11:07,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:07,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:07,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:08,556 INFO L124 PetriNetUnfolderBase]: 636/1139 cut-off events. [2024-06-04 14:11:08,556 INFO L125 PetriNetUnfolderBase]: For 84286/84286 co-relation queries the response was YES. [2024-06-04 14:11:08,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6718 conditions, 1139 events. 636/1139 cut-off events. For 84286/84286 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5765 event pairs, 113 based on Foata normal form. 2/1139 useless extension candidates. Maximal degree in co-relation 6591. Up to 930 conditions per place. [2024-06-04 14:11:08,564 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 175 selfloop transitions, 45 changer transitions 0/222 dead transitions. [2024-06-04 14:11:08,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 222 transitions, 2390 flow [2024-06-04 14:11:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:08,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:08,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:11:08,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:11:08,565 INFO L175 Difference]: Start difference. First operand has 249 places, 200 transitions, 1866 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:11:08,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 222 transitions, 2390 flow [2024-06-04 14:11:08,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 222 transitions, 2293 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:08,785 INFO L231 Difference]: Finished difference. Result has 250 places, 201 transitions, 1895 flow [2024-06-04 14:11:08,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1895, PETRI_PLACES=250, PETRI_TRANSITIONS=201} [2024-06-04 14:11:08,786 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 218 predicate places. [2024-06-04 14:11:08,786 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 201 transitions, 1895 flow [2024-06-04 14:11:08,786 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) [2024-06-04 14:11:08,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:08,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:08,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:11:08,787 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)] === [2024-06-04 14:11:08,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:08,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1752188227, now seen corresponding path program 1 times [2024-06-04 14:11:08,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:08,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942728354] [2024-06-04 14:11:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:08,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:12,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:12,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942728354] [2024-06-04 14:11:12,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942728354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:12,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:12,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:12,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928101746] [2024-06-04 14:11:12,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:12,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:12,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:12,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:12,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:12,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:12,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 201 transitions, 1895 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) [2024-06-04 14:11:12,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:12,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:12,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:13,188 INFO L124 PetriNetUnfolderBase]: 633/1135 cut-off events. [2024-06-04 14:11:13,188 INFO L125 PetriNetUnfolderBase]: For 78339/78339 co-relation queries the response was YES. [2024-06-04 14:11:13,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6502 conditions, 1135 events. 633/1135 cut-off events. For 78339/78339 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5749 event pairs, 140 based on Foata normal form. 2/1135 useless extension candidates. Maximal degree in co-relation 6374. Up to 1018 conditions per place. [2024-06-04 14:11:13,198 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 188 selfloop transitions, 32 changer transitions 0/222 dead transitions. [2024-06-04 14:11:13,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 222 transitions, 2399 flow [2024-06-04 14:11:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:13,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:11:13,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:11:13,199 INFO L175 Difference]: Start difference. First operand has 250 places, 201 transitions, 1895 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:11:13,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 222 transitions, 2399 flow [2024-06-04 14:11:13,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 222 transitions, 2283 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:13,398 INFO L231 Difference]: Finished difference. Result has 253 places, 201 transitions, 1849 flow [2024-06-04 14:11:13,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1849, PETRI_PLACES=253, PETRI_TRANSITIONS=201} [2024-06-04 14:11:13,399 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 221 predicate places. [2024-06-04 14:11:13,399 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 201 transitions, 1849 flow [2024-06-04 14:11:13,399 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) [2024-06-04 14:11:13,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:13,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:13,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:11:13,399 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)] === [2024-06-04 14:11:13,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:13,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1745512873, now seen corresponding path program 6 times [2024-06-04 14:11:13,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:13,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255375119] [2024-06-04 14:11:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:13,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:16,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:16,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255375119] [2024-06-04 14:11:16,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255375119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:16,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:16,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:16,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887340495] [2024-06-04 14:11:16,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:16,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:16,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:16,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:16,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:16,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:16,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 201 transitions, 1849 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) [2024-06-04 14:11:16,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:16,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:16,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:17,491 INFO L124 PetriNetUnfolderBase]: 637/1142 cut-off events. [2024-06-04 14:11:17,491 INFO L125 PetriNetUnfolderBase]: For 79767/79767 co-relation queries the response was YES. [2024-06-04 14:11:17,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6499 conditions, 1142 events. 637/1142 cut-off events. For 79767/79767 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5790 event pairs, 118 based on Foata normal form. 2/1142 useless extension candidates. Maximal degree in co-relation 6370. Up to 972 conditions per place. [2024-06-04 14:11:17,501 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 183 selfloop transitions, 37 changer transitions 0/222 dead transitions. [2024-06-04 14:11:17,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 222 transitions, 2371 flow [2024-06-04 14:11:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:17,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:11:17,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-04 14:11:17,502 INFO L175 Difference]: Start difference. First operand has 253 places, 201 transitions, 1849 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:11:17,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 222 transitions, 2371 flow [2024-06-04 14:11:17,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 222 transitions, 2254 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-04 14:11:17,747 INFO L231 Difference]: Finished difference. Result has 253 places, 202 transitions, 1844 flow [2024-06-04 14:11:17,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1844, PETRI_PLACES=253, PETRI_TRANSITIONS=202} [2024-06-04 14:11:17,747 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 221 predicate places. [2024-06-04 14:11:17,748 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 202 transitions, 1844 flow [2024-06-04 14:11:17,748 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) [2024-06-04 14:11:17,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:17,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:17,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:11:17,748 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)] === [2024-06-04 14:11:17,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1745508223, now seen corresponding path program 7 times [2024-06-04 14:11:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:17,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51748920] [2024-06-04 14:11:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:17,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:20,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:20,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51748920] [2024-06-04 14:11:20,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51748920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:20,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:20,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:20,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421782764] [2024-06-04 14:11:20,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:20,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:20,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:20,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:20,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:21,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:21,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 202 transitions, 1844 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) [2024-06-04 14:11:21,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:21,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:21,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:21,819 INFO L124 PetriNetUnfolderBase]: 641/1150 cut-off events. [2024-06-04 14:11:21,819 INFO L125 PetriNetUnfolderBase]: For 79350/79350 co-relation queries the response was YES. [2024-06-04 14:11:21,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6503 conditions, 1150 events. 641/1150 cut-off events. For 79350/79350 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5852 event pairs, 115 based on Foata normal form. 2/1150 useless extension candidates. Maximal degree in co-relation 6374. Up to 980 conditions per place. [2024-06-04 14:11:21,828 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 185 selfloop transitions, 36 changer transitions 0/223 dead transitions. [2024-06-04 14:11:21,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 223 transitions, 2370 flow [2024-06-04 14:11:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:11:21,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:11:21,829 INFO L175 Difference]: Start difference. First operand has 253 places, 202 transitions, 1844 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:11:21,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 223 transitions, 2370 flow [2024-06-04 14:11:22,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 223 transitions, 2262 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:22,039 INFO L231 Difference]: Finished difference. Result has 255 places, 203 transitions, 1848 flow [2024-06-04 14:11:22,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1848, PETRI_PLACES=255, PETRI_TRANSITIONS=203} [2024-06-04 14:11:22,039 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 223 predicate places. [2024-06-04 14:11:22,039 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 203 transitions, 1848 flow [2024-06-04 14:11:22,039 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) [2024-06-04 14:11:22,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:22,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:22,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:11:22,040 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)] === [2024-06-04 14:11:22,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:22,040 INFO L85 PathProgramCache]: Analyzing trace with hash -89604793, now seen corresponding path program 8 times [2024-06-04 14:11:22,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:22,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180535236] [2024-06-04 14:11:22,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:22,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180535236] [2024-06-04 14:11:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180535236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:25,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:25,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:25,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474021248] [2024-06-04 14:11:25,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:25,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:25,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:25,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:25,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:25,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 203 transitions, 1848 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) [2024-06-04 14:11:25,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:25,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:25,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:26,051 INFO L124 PetriNetUnfolderBase]: 645/1158 cut-off events. [2024-06-04 14:11:26,051 INFO L125 PetriNetUnfolderBase]: For 77795/77795 co-relation queries the response was YES. [2024-06-04 14:11:26,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6516 conditions, 1158 events. 645/1158 cut-off events. For 77795/77795 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5907 event pairs, 121 based on Foata normal form. 2/1158 useless extension candidates. Maximal degree in co-relation 6386. Up to 1023 conditions per place. [2024-06-04 14:11:26,062 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 192 selfloop transitions, 29 changer transitions 0/223 dead transitions. [2024-06-04 14:11:26,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 223 transitions, 2372 flow [2024-06-04 14:11:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:11:26,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:11:26,063 INFO L175 Difference]: Start difference. First operand has 255 places, 203 transitions, 1848 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:11:26,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 223 transitions, 2372 flow [2024-06-04 14:11:26,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 223 transitions, 2270 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:26,309 INFO L231 Difference]: Finished difference. Result has 257 places, 204 transitions, 1846 flow [2024-06-04 14:11:26,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1846, PETRI_PLACES=257, PETRI_TRANSITIONS=204} [2024-06-04 14:11:26,309 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 225 predicate places. [2024-06-04 14:11:26,310 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 204 transitions, 1846 flow [2024-06-04 14:11:26,310 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) [2024-06-04 14:11:26,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:26,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:26,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:11:26,310 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)] === [2024-06-04 14:11:26,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash -89609443, now seen corresponding path program 9 times [2024-06-04 14:11:26,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:26,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429936953] [2024-06-04 14:11:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:26,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:29,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:29,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429936953] [2024-06-04 14:11:29,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429936953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:29,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:29,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:29,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951809570] [2024-06-04 14:11:29,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:29,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:29,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:29,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:29,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:29,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:29,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 204 transitions, 1846 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) [2024-06-04 14:11:29,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:29,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:29,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:30,113 INFO L124 PetriNetUnfolderBase]: 649/1166 cut-off events. [2024-06-04 14:11:30,113 INFO L125 PetriNetUnfolderBase]: For 79571/79571 co-relation queries the response was YES. [2024-06-04 14:11:30,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6549 conditions, 1166 events. 649/1166 cut-off events. For 79571/79571 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5977 event pairs, 121 based on Foata normal form. 2/1166 useless extension candidates. Maximal degree in co-relation 6418. Up to 1031 conditions per place. [2024-06-04 14:11:30,124 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 194 selfloop transitions, 28 changer transitions 0/224 dead transitions. [2024-06-04 14:11:30,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 224 transitions, 2374 flow [2024-06-04 14:11:30,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:11:30,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-04 14:11:30,126 INFO L175 Difference]: Start difference. First operand has 257 places, 204 transitions, 1846 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:11:30,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 224 transitions, 2374 flow [2024-06-04 14:11:30,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 224 transitions, 2284 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:30,356 INFO L231 Difference]: Finished difference. Result has 259 places, 205 transitions, 1856 flow [2024-06-04 14:11:30,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1856, PETRI_PLACES=259, PETRI_TRANSITIONS=205} [2024-06-04 14:11:30,357 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 227 predicate places. [2024-06-04 14:11:30,357 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 205 transitions, 1856 flow [2024-06-04 14:11:30,357 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) [2024-06-04 14:11:30,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:30,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:30,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:11:30,358 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)] === [2024-06-04 14:11:30,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:30,358 INFO L85 PathProgramCache]: Analyzing trace with hash -656411025, now seen corresponding path program 2 times [2024-06-04 14:11:30,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:30,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199487056] [2024-06-04 14:11:30,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:30,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:34,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:34,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199487056] [2024-06-04 14:11:34,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199487056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:34,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:34,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:34,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952354915] [2024-06-04 14:11:34,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:34,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:34,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:34,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:34,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:34,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:34,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 205 transitions, 1856 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) [2024-06-04 14:11:34,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:34,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:34,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:35,319 INFO L124 PetriNetUnfolderBase]: 655/1176 cut-off events. [2024-06-04 14:11:35,319 INFO L125 PetriNetUnfolderBase]: For 81155/81155 co-relation queries the response was YES. [2024-06-04 14:11:35,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6592 conditions, 1176 events. 655/1176 cut-off events. For 81155/81155 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6034 event pairs, 124 based on Foata normal form. 2/1176 useless extension candidates. Maximal degree in co-relation 6460. Up to 1031 conditions per place. [2024-06-04 14:11:35,331 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 194 selfloop transitions, 32 changer transitions 0/228 dead transitions. [2024-06-04 14:11:35,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 228 transitions, 2410 flow [2024-06-04 14:11:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:35,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:11:35,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-04 14:11:35,332 INFO L175 Difference]: Start difference. First operand has 259 places, 205 transitions, 1856 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:11:35,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 228 transitions, 2410 flow [2024-06-04 14:11:35,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 228 transitions, 2320 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:35,605 INFO L231 Difference]: Finished difference. Result has 262 places, 207 transitions, 1891 flow [2024-06-04 14:11:35,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1891, PETRI_PLACES=262, PETRI_TRANSITIONS=207} [2024-06-04 14:11:35,606 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 230 predicate places. [2024-06-04 14:11:35,606 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 207 transitions, 1891 flow [2024-06-04 14:11:35,606 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) [2024-06-04 14:11:35,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:35,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:35,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:11:35,607 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)] === [2024-06-04 14:11:35,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash 87772681, now seen corresponding path program 3 times [2024-06-04 14:11:35,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:35,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452097] [2024-06-04 14:11:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:35,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:39,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:39,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452097] [2024-06-04 14:11:39,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:39,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:39,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:11:39,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015826173] [2024-06-04 14:11:39,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:39,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:11:39,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:11:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:11:39,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:39,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 207 transitions, 1891 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:39,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:39,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:39,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:40,424 INFO L124 PetriNetUnfolderBase]: 671/1203 cut-off events. [2024-06-04 14:11:40,425 INFO L125 PetriNetUnfolderBase]: For 92243/92246 co-relation queries the response was YES. [2024-06-04 14:11:40,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6984 conditions, 1203 events. 671/1203 cut-off events. For 92243/92246 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6193 event pairs, 80 based on Foata normal form. 2/1199 useless extension candidates. Maximal degree in co-relation 6851. Up to 613 conditions per place. [2024-06-04 14:11:40,433 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 107 selfloop transitions, 125 changer transitions 0/234 dead transitions. [2024-06-04 14:11:40,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 234 transitions, 2717 flow [2024-06-04 14:11:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:11:40,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-04 14:11:40,434 INFO L175 Difference]: Start difference. First operand has 262 places, 207 transitions, 1891 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:11:40,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 234 transitions, 2717 flow [2024-06-04 14:11:40,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 234 transitions, 2612 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:40,696 INFO L231 Difference]: Finished difference. Result has 263 places, 211 transitions, 2161 flow [2024-06-04 14:11:40,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2161, PETRI_PLACES=263, PETRI_TRANSITIONS=211} [2024-06-04 14:11:40,697 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 231 predicate places. [2024-06-04 14:11:40,697 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 211 transitions, 2161 flow [2024-06-04 14:11:40,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:40,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:40,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:40,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:11:40,698 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)] === [2024-06-04 14:11:40,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash 536500023, now seen corresponding path program 4 times [2024-06-04 14:11:40,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:40,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788652067] [2024-06-04 14:11:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:40,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:45,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:45,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788652067] [2024-06-04 14:11:45,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788652067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:45,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:45,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:45,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015098224] [2024-06-04 14:11:45,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:45,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:45,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:45,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:45,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:45,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 211 transitions, 2161 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) [2024-06-04 14:11:45,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:45,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:45,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:46,048 INFO L124 PetriNetUnfolderBase]: 677/1212 cut-off events. [2024-06-04 14:11:46,048 INFO L125 PetriNetUnfolderBase]: For 94491/94491 co-relation queries the response was YES. [2024-06-04 14:11:46,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7341 conditions, 1212 events. 677/1212 cut-off events. For 94491/94491 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6259 event pairs, 119 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 7207. Up to 950 conditions per place. [2024-06-04 14:11:46,059 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 177 selfloop transitions, 58 changer transitions 0/237 dead transitions. [2024-06-04 14:11:46,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 237 transitions, 2753 flow [2024-06-04 14:11:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:46,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:11:46,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-04 14:11:46,060 INFO L175 Difference]: Start difference. First operand has 263 places, 211 transitions, 2161 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:11:46,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 237 transitions, 2753 flow [2024-06-04 14:11:46,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 237 transitions, 2539 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 14:11:46,341 INFO L231 Difference]: Finished difference. Result has 268 places, 213 transitions, 2132 flow [2024-06-04 14:11:46,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2132, PETRI_PLACES=268, PETRI_TRANSITIONS=213} [2024-06-04 14:11:46,341 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 236 predicate places. [2024-06-04 14:11:46,341 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 213 transitions, 2132 flow [2024-06-04 14:11:46,341 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) [2024-06-04 14:11:46,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:46,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:46,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:11:46,342 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)] === [2024-06-04 14:11:46,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:46,342 INFO L85 PathProgramCache]: Analyzing trace with hash -89724763, now seen corresponding path program 10 times [2024-06-04 14:11:46,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:46,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387609123] [2024-06-04 14:11:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:46,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:48,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:48,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387609123] [2024-06-04 14:11:48,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387609123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:48,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:48,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:48,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162383558] [2024-06-04 14:11:48,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:48,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:48,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:48,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:48,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:49,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:49,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 213 transitions, 2132 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) [2024-06-04 14:11:49,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:49,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:49,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:49,673 INFO L124 PetriNetUnfolderBase]: 681/1220 cut-off events. [2024-06-04 14:11:49,673 INFO L125 PetriNetUnfolderBase]: For 96310/96310 co-relation queries the response was YES. [2024-06-04 14:11:49,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 1220 events. 681/1220 cut-off events. For 96310/96310 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6319 event pairs, 125 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 7262. Up to 1085 conditions per place. [2024-06-04 14:11:49,684 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 204 selfloop transitions, 27 changer transitions 0/233 dead transitions. [2024-06-04 14:11:49,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 233 transitions, 2680 flow [2024-06-04 14:11:49,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:11:49,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-04 14:11:49,685 INFO L175 Difference]: Start difference. First operand has 268 places, 213 transitions, 2132 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:11:49,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 233 transitions, 2680 flow [2024-06-04 14:11:50,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 233 transitions, 2527 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:50,003 INFO L231 Difference]: Finished difference. Result has 269 places, 214 transitions, 2079 flow [2024-06-04 14:11:50,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2079, PETRI_PLACES=269, PETRI_TRANSITIONS=214} [2024-06-04 14:11:50,004 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 237 predicate places. [2024-06-04 14:11:50,004 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 214 transitions, 2079 flow [2024-06-04 14:11:50,004 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) [2024-06-04 14:11:50,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:50,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:50,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:11:50,005 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)] === [2024-06-04 14:11:50,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:50,005 INFO L85 PathProgramCache]: Analyzing trace with hash 87533671, now seen corresponding path program 5 times [2024-06-04 14:11:50,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:50,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079794556] [2024-06-04 14:11:50,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:50,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:54,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:54,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079794556] [2024-06-04 14:11:54,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079794556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:54,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:54,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:54,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695886402] [2024-06-04 14:11:54,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:54,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:54,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:54,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:54,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:54,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:54,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 214 transitions, 2079 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) [2024-06-04 14:11:54,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:54,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:54,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:55,180 INFO L124 PetriNetUnfolderBase]: 687/1230 cut-off events. [2024-06-04 14:11:55,180 INFO L125 PetriNetUnfolderBase]: For 98356/98356 co-relation queries the response was YES. [2024-06-04 14:11:55,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7379 conditions, 1230 events. 687/1230 cut-off events. For 98356/98356 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6390 event pairs, 123 based on Foata normal form. 2/1230 useless extension candidates. Maximal degree in co-relation 7242. Up to 1011 conditions per place. [2024-06-04 14:11:55,190 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 189 selfloop transitions, 48 changer transitions 0/239 dead transitions. [2024-06-04 14:11:55,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 239 transitions, 2667 flow [2024-06-04 14:11:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:11:55,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:11:55,192 INFO L175 Difference]: Start difference. First operand has 269 places, 214 transitions, 2079 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:11:55,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 239 transitions, 2667 flow [2024-06-04 14:11:55,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 239 transitions, 2577 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:55,506 INFO L231 Difference]: Finished difference. Result has 272 places, 216 transitions, 2150 flow [2024-06-04 14:11:55,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2150, PETRI_PLACES=272, PETRI_TRANSITIONS=216} [2024-06-04 14:11:55,506 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 240 predicate places. [2024-06-04 14:11:55,506 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 216 transitions, 2150 flow [2024-06-04 14:11:55,507 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) [2024-06-04 14:11:55,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:55,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:55,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:11:55,507 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)] === [2024-06-04 14:11:55,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:55,507 INFO L85 PathProgramCache]: Analyzing trace with hash 81277561, now seen corresponding path program 6 times [2024-06-04 14:11:55,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578673023] [2024-06-04 14:11:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:59,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:59,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578673023] [2024-06-04 14:11:59,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578673023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:59,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:59,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:59,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819335609] [2024-06-04 14:11:59,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:59,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:59,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:59,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:59,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:59,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:59,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 216 transitions, 2150 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) [2024-06-04 14:11:59,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:59,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:59,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:00,545 INFO L124 PetriNetUnfolderBase]: 693/1240 cut-off events. [2024-06-04 14:12:00,545 INFO L125 PetriNetUnfolderBase]: For 100126/100126 co-relation queries the response was YES. [2024-06-04 14:12:00,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7501 conditions, 1240 events. 693/1240 cut-off events. For 100126/100126 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6436 event pairs, 127 based on Foata normal form. 2/1240 useless extension candidates. Maximal degree in co-relation 7363. Up to 1060 conditions per place. [2024-06-04 14:12:00,556 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 198 selfloop transitions, 40 changer transitions 0/240 dead transitions. [2024-06-04 14:12:00,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 240 transitions, 2740 flow [2024-06-04 14:12:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:00,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:12:00,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:12:00,557 INFO L175 Difference]: Start difference. First operand has 272 places, 216 transitions, 2150 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:12:00,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 240 transitions, 2740 flow [2024-06-04 14:12:00,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 240 transitions, 2603 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:00,890 INFO L231 Difference]: Finished difference. Result has 274 places, 218 transitions, 2162 flow [2024-06-04 14:12:00,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2162, PETRI_PLACES=274, PETRI_TRANSITIONS=218} [2024-06-04 14:12:00,890 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 242 predicate places. [2024-06-04 14:12:00,890 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 218 transitions, 2162 flow [2024-06-04 14:12:00,891 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) [2024-06-04 14:12:00,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:00,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:00,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:12:00,891 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)] === [2024-06-04 14:12:00,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash -263898715, now seen corresponding path program 11 times [2024-06-04 14:12:00,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:00,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724334516] [2024-06-04 14:12:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:00,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:04,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:04,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724334516] [2024-06-04 14:12:04,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724334516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:04,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:04,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:04,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332351670] [2024-06-04 14:12:04,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:04,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:04,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:04,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:04,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:04,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:04,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 218 transitions, 2162 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) [2024-06-04 14:12:04,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:04,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:04,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:04,897 INFO L124 PetriNetUnfolderBase]: 697/1249 cut-off events. [2024-06-04 14:12:04,897 INFO L125 PetriNetUnfolderBase]: For 102757/102760 co-relation queries the response was YES. [2024-06-04 14:12:04,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7550 conditions, 1249 events. 697/1249 cut-off events. For 102757/102760 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6518 event pairs, 121 based on Foata normal form. 2/1245 useless extension candidates. Maximal degree in co-relation 7411. Up to 1062 conditions per place. [2024-06-04 14:12:04,906 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 198 selfloop transitions, 40 changer transitions 0/240 dead transitions. [2024-06-04 14:12:04,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 240 transitions, 2734 flow [2024-06-04 14:12:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:12:04,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:12:04,907 INFO L175 Difference]: Start difference. First operand has 274 places, 218 transitions, 2162 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:12:04,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 240 transitions, 2734 flow [2024-06-04 14:12:05,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 240 transitions, 2609 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:05,264 INFO L231 Difference]: Finished difference. Result has 275 places, 219 transitions, 2165 flow [2024-06-04 14:12:05,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2037, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2165, PETRI_PLACES=275, PETRI_TRANSITIONS=219} [2024-06-04 14:12:05,265 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 243 predicate places. [2024-06-04 14:12:05,265 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 219 transitions, 2165 flow [2024-06-04 14:12:05,265 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) [2024-06-04 14:12:05,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:05,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:05,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:12:05,265 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)] === [2024-06-04 14:12:05,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash 796988081, now seen corresponding path program 7 times [2024-06-04 14:12:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:05,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985856279] [2024-06-04 14:12:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:05,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:09,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985856279] [2024-06-04 14:12:09,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985856279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:09,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:09,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:09,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604525683] [2024-06-04 14:12:09,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:09,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:09,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:09,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:09,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:09,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 219 transitions, 2165 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) [2024-06-04 14:12:09,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:09,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:09,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:10,429 INFO L124 PetriNetUnfolderBase]: 703/1259 cut-off events. [2024-06-04 14:12:10,430 INFO L125 PetriNetUnfolderBase]: For 104834/104837 co-relation queries the response was YES. [2024-06-04 14:12:10,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7622 conditions, 1259 events. 703/1259 cut-off events. For 104834/104837 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6609 event pairs, 121 based on Foata normal form. 2/1255 useless extension candidates. Maximal degree in co-relation 7482. Up to 1032 conditions per place. [2024-06-04 14:12:10,441 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 193 selfloop transitions, 50 changer transitions 0/245 dead transitions. [2024-06-04 14:12:10,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 245 transitions, 2777 flow [2024-06-04 14:12:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:12:10,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:12:10,442 INFO L175 Difference]: Start difference. First operand has 275 places, 219 transitions, 2165 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:12:10,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 245 transitions, 2777 flow [2024-06-04 14:12:10,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 245 transitions, 2659 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:10,812 INFO L231 Difference]: Finished difference. Result has 278 places, 221 transitions, 2220 flow [2024-06-04 14:12:10,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2047, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2220, PETRI_PLACES=278, PETRI_TRANSITIONS=221} [2024-06-04 14:12:10,812 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 246 predicate places. [2024-06-04 14:12:10,812 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 221 transitions, 2220 flow [2024-06-04 14:12:10,812 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) [2024-06-04 14:12:10,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:10,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:10,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:12:10,813 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)] === [2024-06-04 14:12:10,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:10,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1120950975, now seen corresponding path program 8 times [2024-06-04 14:12:10,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:10,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265007524] [2024-06-04 14:12:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:10,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:16,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265007524] [2024-06-04 14:12:16,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265007524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:16,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:16,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743072827] [2024-06-04 14:12:16,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:16,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:16,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:16,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:16,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:16,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 221 transitions, 2220 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) [2024-06-04 14:12:16,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:16,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:16,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:17,132 INFO L124 PetriNetUnfolderBase]: 709/1269 cut-off events. [2024-06-04 14:12:17,132 INFO L125 PetriNetUnfolderBase]: For 106878/106881 co-relation queries the response was YES. [2024-06-04 14:12:17,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7720 conditions, 1269 events. 709/1269 cut-off events. For 106878/106881 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6658 event pairs, 101 based on Foata normal form. 2/1265 useless extension candidates. Maximal degree in co-relation 7579. Up to 1000 conditions per place. [2024-06-04 14:12:17,144 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 185 selfloop transitions, 60 changer transitions 0/247 dead transitions. [2024-06-04 14:12:17,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 247 transitions, 2840 flow [2024-06-04 14:12:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 14:12:17,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-04 14:12:17,145 INFO L175 Difference]: Start difference. First operand has 278 places, 221 transitions, 2220 flow. Second operand 11 states and 128 transitions. [2024-06-04 14:12:17,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 247 transitions, 2840 flow [2024-06-04 14:12:17,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 247 transitions, 2691 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:17,529 INFO L231 Difference]: Finished difference. Result has 280 places, 223 transitions, 2268 flow [2024-06-04 14:12:17,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2268, PETRI_PLACES=280, PETRI_TRANSITIONS=223} [2024-06-04 14:12:17,529 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2024-06-04 14:12:17,529 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 223 transitions, 2268 flow [2024-06-04 14:12:17,529 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) [2024-06-04 14:12:17,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:17,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:17,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:12:17,530 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)] === [2024-06-04 14:12:17,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:17,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1121181615, now seen corresponding path program 9 times [2024-06-04 14:12:17,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:17,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977279287] [2024-06-04 14:12:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:17,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:21,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:21,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977279287] [2024-06-04 14:12:21,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977279287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:21,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:21,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:21,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454915209] [2024-06-04 14:12:21,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:21,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:21,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:21,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:21,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:21,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:21,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 223 transitions, 2268 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) [2024-06-04 14:12:21,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:21,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:21,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:22,540 INFO L124 PetriNetUnfolderBase]: 715/1279 cut-off events. [2024-06-04 14:12:22,541 INFO L125 PetriNetUnfolderBase]: For 109032/109035 co-relation queries the response was YES. [2024-06-04 14:12:22,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7832 conditions, 1279 events. 715/1279 cut-off events. For 109032/109035 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6691 event pairs, 105 based on Foata normal form. 2/1275 useless extension candidates. Maximal degree in co-relation 7690. Up to 1032 conditions per place. [2024-06-04 14:12:22,554 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 191 selfloop transitions, 55 changer transitions 0/248 dead transitions. [2024-06-04 14:12:22,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 248 transitions, 2890 flow [2024-06-04 14:12:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:12:22,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-04 14:12:22,555 INFO L175 Difference]: Start difference. First operand has 280 places, 223 transitions, 2268 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:12:22,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 248 transitions, 2890 flow [2024-06-04 14:12:22,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 248 transitions, 2717 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:22,952 INFO L231 Difference]: Finished difference. Result has 282 places, 225 transitions, 2286 flow [2024-06-04 14:12:22,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2286, PETRI_PLACES=282, PETRI_TRANSITIONS=225} [2024-06-04 14:12:22,953 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 250 predicate places. [2024-06-04 14:12:22,953 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 225 transitions, 2286 flow [2024-06-04 14:12:22,953 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) [2024-06-04 14:12:22,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:22,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:22,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:12:22,953 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)] === [2024-06-04 14:12:22,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:22,954 INFO L85 PathProgramCache]: Analyzing trace with hash 796757441, now seen corresponding path program 10 times [2024-06-04 14:12:22,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:22,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608636833] [2024-06-04 14:12:22,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:22,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:26,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:26,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608636833] [2024-06-04 14:12:26,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608636833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:26,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:26,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:26,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247256604] [2024-06-04 14:12:26,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:26,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:26,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:26,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:26,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:27,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:27,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 225 transitions, 2286 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) [2024-06-04 14:12:27,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:27,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:27,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:27,865 INFO L124 PetriNetUnfolderBase]: 721/1289 cut-off events. [2024-06-04 14:12:27,865 INFO L125 PetriNetUnfolderBase]: For 111348/111351 co-relation queries the response was YES. [2024-06-04 14:12:27,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7898 conditions, 1289 events. 721/1289 cut-off events. For 111348/111351 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6771 event pairs, 127 based on Foata normal form. 2/1285 useless extension candidates. Maximal degree in co-relation 7755. Up to 1092 conditions per place. [2024-06-04 14:12:27,876 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 205 selfloop transitions, 43 changer transitions 0/250 dead transitions. [2024-06-04 14:12:27,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 250 transitions, 2916 flow [2024-06-04 14:12:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:12:27,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-04 14:12:27,878 INFO L175 Difference]: Start difference. First operand has 282 places, 225 transitions, 2286 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:12:27,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 250 transitions, 2916 flow [2024-06-04 14:12:28,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 250 transitions, 2749 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:28,244 INFO L231 Difference]: Finished difference. Result has 284 places, 227 transitions, 2290 flow [2024-06-04 14:12:28,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2290, PETRI_PLACES=284, PETRI_TRANSITIONS=227} [2024-06-04 14:12:28,244 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 252 predicate places. [2024-06-04 14:12:28,245 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 227 transitions, 2290 flow [2024-06-04 14:12:28,245 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) [2024-06-04 14:12:28,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:28,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:28,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:12:28,245 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)] === [2024-06-04 14:12:28,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:28,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1129312557, now seen corresponding path program 12 times [2024-06-04 14:12:28,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:28,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499655880] [2024-06-04 14:12:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:28,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:31,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:31,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499655880] [2024-06-04 14:12:31,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499655880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:31,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:31,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:31,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509142717] [2024-06-04 14:12:31,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:31,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:31,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:31,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:31,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:31,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:31,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 227 transitions, 2290 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) [2024-06-04 14:12:31,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:31,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:31,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:32,310 INFO L124 PetriNetUnfolderBase]: 725/1297 cut-off events. [2024-06-04 14:12:32,311 INFO L125 PetriNetUnfolderBase]: For 113620/113623 co-relation queries the response was YES. [2024-06-04 14:12:32,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7914 conditions, 1297 events. 725/1297 cut-off events. For 113620/113623 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6817 event pairs, 133 based on Foata normal form. 2/1293 useless extension candidates. Maximal degree in co-relation 7770. Up to 1132 conditions per place. [2024-06-04 14:12:32,323 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 211 selfloop transitions, 35 changer transitions 0/248 dead transitions. [2024-06-04 14:12:32,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 248 transitions, 2876 flow [2024-06-04 14:12:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:32,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:12:32,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:12:32,325 INFO L175 Difference]: Start difference. First operand has 284 places, 227 transitions, 2290 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:12:32,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 248 transitions, 2876 flow [2024-06-04 14:12:32,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 248 transitions, 2729 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:32,697 INFO L231 Difference]: Finished difference. Result has 285 places, 228 transitions, 2263 flow [2024-06-04 14:12:32,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2263, PETRI_PLACES=285, PETRI_TRANSITIONS=228} [2024-06-04 14:12:32,697 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 253 predicate places. [2024-06-04 14:12:32,697 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 228 transitions, 2263 flow [2024-06-04 14:12:32,697 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) [2024-06-04 14:12:32,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:32,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:32,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:12:32,698 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)] === [2024-06-04 14:12:32,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:32,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1129307907, now seen corresponding path program 13 times [2024-06-04 14:12:32,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:32,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193700372] [2024-06-04 14:12:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:32,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:36,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:36,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193700372] [2024-06-04 14:12:36,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193700372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:36,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:36,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:36,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196785157] [2024-06-04 14:12:36,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:36,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:36,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:36,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:36,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:36,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:36,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 228 transitions, 2263 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) [2024-06-04 14:12:36,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:36,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:36,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:36,913 INFO L124 PetriNetUnfolderBase]: 729/1305 cut-off events. [2024-06-04 14:12:36,913 INFO L125 PetriNetUnfolderBase]: For 116004/116007 co-relation queries the response was YES. [2024-06-04 14:12:36,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7935 conditions, 1305 events. 729/1305 cut-off events. For 116004/116007 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6875 event pairs, 133 based on Foata normal form. 2/1301 useless extension candidates. Maximal degree in co-relation 7790. Up to 1140 conditions per place. [2024-06-04 14:12:36,924 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 213 selfloop transitions, 34 changer transitions 0/249 dead transitions. [2024-06-04 14:12:36,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 249 transitions, 2853 flow [2024-06-04 14:12:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:12:36,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-04 14:12:36,925 INFO L175 Difference]: Start difference. First operand has 285 places, 228 transitions, 2263 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:12:36,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 249 transitions, 2853 flow [2024-06-04 14:12:37,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 249 transitions, 2743 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:37,364 INFO L231 Difference]: Finished difference. Result has 287 places, 229 transitions, 2273 flow [2024-06-04 14:12:37,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2273, PETRI_PLACES=287, PETRI_TRANSITIONS=229} [2024-06-04 14:12:37,364 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-04 14:12:37,364 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 229 transitions, 2273 flow [2024-06-04 14:12:37,364 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) [2024-06-04 14:12:37,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:37,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:37,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:12:37,365 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)] === [2024-06-04 14:12:37,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1129492481, now seen corresponding path program 11 times [2024-06-04 14:12:37,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:37,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195654340] [2024-06-04 14:12:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:37,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:42,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:42,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:42,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195654340] [2024-06-04 14:12:42,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195654340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:42,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:42,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:42,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059202408] [2024-06-04 14:12:42,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:42,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:42,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:42,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:42,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 229 transitions, 2273 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) [2024-06-04 14:12:42,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:42,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:42,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:42,903 INFO L124 PetriNetUnfolderBase]: 735/1315 cut-off events. [2024-06-04 14:12:42,903 INFO L125 PetriNetUnfolderBase]: For 118164/118167 co-relation queries the response was YES. [2024-06-04 14:12:42,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8010 conditions, 1315 events. 735/1315 cut-off events. For 118164/118167 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6948 event pairs, 133 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 7864. Up to 1140 conditions per place. [2024-06-04 14:12:42,916 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 213 selfloop transitions, 38 changer transitions 0/253 dead transitions. [2024-06-04 14:12:42,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 253 transitions, 2909 flow [2024-06-04 14:12:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:42,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:12:42,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:12:42,917 INFO L175 Difference]: Start difference. First operand has 287 places, 229 transitions, 2273 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:12:42,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 253 transitions, 2909 flow [2024-06-04 14:12:43,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 253 transitions, 2799 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:43,404 INFO L231 Difference]: Finished difference. Result has 290 places, 231 transitions, 2328 flow [2024-06-04 14:12:43,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2328, PETRI_PLACES=290, PETRI_TRANSITIONS=231} [2024-06-04 14:12:43,404 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 258 predicate places. [2024-06-04 14:12:43,404 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 231 transitions, 2328 flow [2024-06-04 14:12:43,404 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) [2024-06-04 14:12:43,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:43,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:43,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:12:43,405 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)] === [2024-06-04 14:12:43,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:43,405 INFO L85 PathProgramCache]: Analyzing trace with hash -314273111, now seen corresponding path program 14 times [2024-06-04 14:12:43,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:43,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087177806] [2024-06-04 14:12:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:43,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:46,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:46,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087177806] [2024-06-04 14:12:46,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087177806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:46,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:46,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:46,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105516368] [2024-06-04 14:12:46,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:46,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:46,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:46,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:46,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:46,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:46,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 231 transitions, 2328 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) [2024-06-04 14:12:46,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:46,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:46,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:47,720 INFO L124 PetriNetUnfolderBase]: 739/1323 cut-off events. [2024-06-04 14:12:47,720 INFO L125 PetriNetUnfolderBase]: For 120640/120643 co-relation queries the response was YES. [2024-06-04 14:12:47,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8078 conditions, 1323 events. 739/1323 cut-off events. For 120640/120643 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7010 event pairs, 108 based on Foata normal form. 2/1319 useless extension candidates. Maximal degree in co-relation 7931. Up to 1086 conditions per place. [2024-06-04 14:12:47,733 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 199 selfloop transitions, 52 changer transitions 0/253 dead transitions. [2024-06-04 14:12:47,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 253 transitions, 2932 flow [2024-06-04 14:12:47,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:47,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:12:47,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:12:47,734 INFO L175 Difference]: Start difference. First operand has 290 places, 231 transitions, 2328 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:12:47,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 253 transitions, 2932 flow [2024-06-04 14:12:48,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 253 transitions, 2791 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:48,163 INFO L231 Difference]: Finished difference. Result has 291 places, 232 transitions, 2345 flow [2024-06-04 14:12:48,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2345, PETRI_PLACES=291, PETRI_TRANSITIONS=232} [2024-06-04 14:12:48,163 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 259 predicate places. [2024-06-04 14:12:48,163 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 232 transitions, 2345 flow [2024-06-04 14:12:48,163 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) [2024-06-04 14:12:48,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:48,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:48,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:12:48,163 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)] === [2024-06-04 14:12:48,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:48,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2106700435, now seen corresponding path program 15 times [2024-06-04 14:12:48,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:48,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231731416] [2024-06-04 14:12:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:48,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:51,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:51,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231731416] [2024-06-04 14:12:51,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231731416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:51,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:51,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:51,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995117121] [2024-06-04 14:12:51,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:51,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:51,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:51,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:51,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 232 transitions, 2345 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) [2024-06-04 14:12:51,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:51,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:51,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:52,618 INFO L124 PetriNetUnfolderBase]: 743/1331 cut-off events. [2024-06-04 14:12:52,618 INFO L125 PetriNetUnfolderBase]: For 123213/123216 co-relation queries the response was YES. [2024-06-04 14:12:52,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8169 conditions, 1331 events. 743/1331 cut-off events. For 123213/123216 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7066 event pairs, 113 based on Foata normal form. 2/1327 useless extension candidates. Maximal degree in co-relation 8021. Up to 1108 conditions per place. [2024-06-04 14:12:52,631 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 201 selfloop transitions, 49 changer transitions 0/252 dead transitions. [2024-06-04 14:12:52,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 252 transitions, 2943 flow [2024-06-04 14:12:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:12:52,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-04 14:12:52,632 INFO L175 Difference]: Start difference. First operand has 291 places, 232 transitions, 2345 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:12:52,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 252 transitions, 2943 flow [2024-06-04 14:12:53,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 252 transitions, 2795 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:53,066 INFO L231 Difference]: Finished difference. Result has 293 places, 233 transitions, 2351 flow [2024-06-04 14:12:53,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2351, PETRI_PLACES=293, PETRI_TRANSITIONS=233} [2024-06-04 14:12:53,066 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-04 14:12:53,066 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 233 transitions, 2351 flow [2024-06-04 14:12:53,066 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) [2024-06-04 14:12:53,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:53,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:53,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:12:53,067 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)] === [2024-06-04 14:12:53,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:53,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1714093543, now seen corresponding path program 12 times [2024-06-04 14:12:53,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:53,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964537873] [2024-06-04 14:12:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:53,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:56,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:56,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964537873] [2024-06-04 14:12:56,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964537873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:56,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:56,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:56,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275468906] [2024-06-04 14:12:56,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:56,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:56,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:56,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:56,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 233 transitions, 2351 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) [2024-06-04 14:12:56,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:56,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:56,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:57,734 INFO L124 PetriNetUnfolderBase]: 749/1341 cut-off events. [2024-06-04 14:12:57,734 INFO L125 PetriNetUnfolderBase]: For 124756/124759 co-relation queries the response was YES. [2024-06-04 14:12:57,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8194 conditions, 1341 events. 749/1341 cut-off events. For 124756/124759 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7124 event pairs, 80 based on Foata normal form. 2/1337 useless extension candidates. Maximal degree in co-relation 8045. Up to 670 conditions per place. [2024-06-04 14:12:57,747 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 132 selfloop transitions, 129 changer transitions 0/263 dead transitions. [2024-06-04 14:12:57,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 263 transitions, 3445 flow [2024-06-04 14:12:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:57,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-04 14:12:57,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:12:57,748 INFO L175 Difference]: Start difference. First operand has 293 places, 233 transitions, 2351 flow. Second operand 12 states and 144 transitions. [2024-06-04 14:12:57,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 263 transitions, 3445 flow [2024-06-04 14:12:58,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 263 transitions, 3301 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:58,145 INFO L231 Difference]: Finished difference. Result has 297 places, 235 transitions, 2530 flow [2024-06-04 14:12:58,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2530, PETRI_PLACES=297, PETRI_TRANSITIONS=235} [2024-06-04 14:12:58,146 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-06-04 14:12:58,146 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 235 transitions, 2530 flow [2024-06-04 14:12:58,146 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) [2024-06-04 14:12:58,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:58,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:58,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:12:58,146 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)] === [2024-06-04 14:12:58,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1714101913, now seen corresponding path program 13 times [2024-06-04 14:12:58,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:58,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700952562] [2024-06-04 14:12:58,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:58,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:04,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:04,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700952562] [2024-06-04 14:13:04,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700952562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:04,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:04,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984203493] [2024-06-04 14:13:04,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:04,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:04,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:04,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:04,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 235 transitions, 2530 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) [2024-06-04 14:13:04,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:04,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:04,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:05,779 INFO L124 PetriNetUnfolderBase]: 745/1334 cut-off events. [2024-06-04 14:13:05,779 INFO L125 PetriNetUnfolderBase]: For 113802/113802 co-relation queries the response was YES. [2024-06-04 14:13:05,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8087 conditions, 1334 events. 745/1334 cut-off events. For 113802/113802 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7098 event pairs, 186 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 7937. Up to 1290 conditions per place. [2024-06-04 14:13:05,793 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 230 selfloop transitions, 18 changer transitions 0/250 dead transitions. [2024-06-04 14:13:05,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 250 transitions, 3067 flow [2024-06-04 14:13:05,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:05,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-04 14:13:05,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2975206611570248 [2024-06-04 14:13:05,794 INFO L175 Difference]: Start difference. First operand has 297 places, 235 transitions, 2530 flow. Second operand 11 states and 108 transitions. [2024-06-04 14:13:05,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 250 transitions, 3067 flow [2024-06-04 14:13:06,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 250 transitions, 2574 flow, removed 51 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:06,178 INFO L231 Difference]: Finished difference. Result has 298 places, 236 transitions, 2090 flow [2024-06-04 14:13:06,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2090, PETRI_PLACES=298, PETRI_TRANSITIONS=236} [2024-06-04 14:13:06,178 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 266 predicate places. [2024-06-04 14:13:06,178 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 236 transitions, 2090 flow [2024-06-04 14:13:06,178 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) [2024-06-04 14:13:06,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:06,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:06,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:13:06,179 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)] === [2024-06-04 14:13:06,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:06,179 INFO L85 PathProgramCache]: Analyzing trace with hash -441030235, now seen corresponding path program 16 times [2024-06-04 14:13:06,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:06,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158156788] [2024-06-04 14:13:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:06,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:09,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:09,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158156788] [2024-06-04 14:13:09,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158156788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:09,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:09,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:09,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109822546] [2024-06-04 14:13:09,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:09,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:09,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:09,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:09,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:09,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:09,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 236 transitions, 2090 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) [2024-06-04 14:13:09,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:09,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:09,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:09,938 INFO L124 PetriNetUnfolderBase]: 749/1343 cut-off events. [2024-06-04 14:13:09,938 INFO L125 PetriNetUnfolderBase]: For 115465/115468 co-relation queries the response was YES. [2024-06-04 14:13:09,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7526 conditions, 1343 events. 749/1343 cut-off events. For 115465/115468 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7188 event pairs, 140 based on Foata normal form. 2/1339 useless extension candidates. Maximal degree in co-relation 7375. Up to 1192 conditions per place. [2024-06-04 14:13:09,952 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 221 selfloop transitions, 32 changer transitions 0/255 dead transitions. [2024-06-04 14:13:09,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 255 transitions, 2692 flow [2024-06-04 14:13:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:13:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:13:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:13:09,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:13:09,953 INFO L175 Difference]: Start difference. First operand has 298 places, 236 transitions, 2090 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:13:09,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 255 transitions, 2692 flow [2024-06-04 14:13:10,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 255 transitions, 2654 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 14:13:10,331 INFO L231 Difference]: Finished difference. Result has 299 places, 237 transitions, 2174 flow [2024-06-04 14:13:10,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2174, PETRI_PLACES=299, PETRI_TRANSITIONS=237} [2024-06-04 14:13:10,331 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-04 14:13:10,331 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 237 transitions, 2174 flow [2024-06-04 14:13:10,331 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) [2024-06-04 14:13:10,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:10,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:10,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:13:10,331 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)] === [2024-06-04 14:13:10,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1438080275, now seen corresponding path program 14 times [2024-06-04 14:13:10,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:10,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285337584] [2024-06-04 14:13:10,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:10,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:15,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:15,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285337584] [2024-06-04 14:13:15,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285337584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:15,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:15,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:15,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859661261] [2024-06-04 14:13:15,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:15,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:15,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:15,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:15,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:15,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:15,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 237 transitions, 2174 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) [2024-06-04 14:13:15,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:15,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:15,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:16,626 INFO L124 PetriNetUnfolderBase]: 755/1353 cut-off events. [2024-06-04 14:13:16,626 INFO L125 PetriNetUnfolderBase]: For 118359/118362 co-relation queries the response was YES. [2024-06-04 14:13:16,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7725 conditions, 1353 events. 755/1353 cut-off events. For 118359/118362 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7205 event pairs, 91 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 7573. Up to 1000 conditions per place. [2024-06-04 14:13:16,639 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 182 selfloop transitions, 79 changer transitions 0/263 dead transitions. [2024-06-04 14:13:16,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 263 transitions, 2838 flow [2024-06-04 14:13:16,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:13:16,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-04 14:13:16,640 INFO L175 Difference]: Start difference. First operand has 299 places, 237 transitions, 2174 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:13:16,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 263 transitions, 2838 flow [2024-06-04 14:13:16,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 263 transitions, 2726 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:13:16,999 INFO L231 Difference]: Finished difference. Result has 302 places, 239 transitions, 2309 flow [2024-06-04 14:13:16,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2309, PETRI_PLACES=302, PETRI_TRANSITIONS=239} [2024-06-04 14:13:16,999 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-04 14:13:16,999 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 239 transitions, 2309 flow [2024-06-04 14:13:17,000 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) [2024-06-04 14:13:17,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:17,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:17,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:13:17,000 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)] === [2024-06-04 14:13:17,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:17,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2106695785, now seen corresponding path program 17 times [2024-06-04 14:13:17,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:17,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073952287] [2024-06-04 14:13:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:17,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:20,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:20,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073952287] [2024-06-04 14:13:20,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073952287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:20,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:20,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:20,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512355459] [2024-06-04 14:13:20,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:20,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:20,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:20,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:20,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:20,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:20,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 239 transitions, 2309 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) [2024-06-04 14:13:20,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:20,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:20,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:21,210 INFO L124 PetriNetUnfolderBase]: 759/1361 cut-off events. [2024-06-04 14:13:21,210 INFO L125 PetriNetUnfolderBase]: For 120757/120760 co-relation queries the response was YES. [2024-06-04 14:13:21,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7923 conditions, 1361 events. 759/1361 cut-off events. For 120757/120760 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7301 event pairs, 113 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 7770. Up to 1138 conditions per place. [2024-06-04 14:13:21,223 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 209 selfloop transitions, 48 changer transitions 0/259 dead transitions. [2024-06-04 14:13:21,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 259 transitions, 2925 flow [2024-06-04 14:13:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:13:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:13:21,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:13:21,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-04 14:13:21,224 INFO L175 Difference]: Start difference. First operand has 302 places, 239 transitions, 2309 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:13:21,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 259 transitions, 2925 flow [2024-06-04 14:13:21,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 259 transitions, 2698 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-04 14:13:21,628 INFO L231 Difference]: Finished difference. Result has 303 places, 240 transitions, 2238 flow [2024-06-04 14:13:21,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2238, PETRI_PLACES=303, PETRI_TRANSITIONS=240} [2024-06-04 14:13:21,629 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 271 predicate places. [2024-06-04 14:13:21,629 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 240 transitions, 2238 flow [2024-06-04 14:13:21,629 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) [2024-06-04 14:13:21,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:21,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:21,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:13:21,629 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)] === [2024-06-04 14:13:21,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:21,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2106880359, now seen corresponding path program 15 times [2024-06-04 14:13:21,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:21,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198514216] [2024-06-04 14:13:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:21,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:26,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:26,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198514216] [2024-06-04 14:13:26,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198514216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:26,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:26,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:26,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451899466] [2024-06-04 14:13:26,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:26,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:26,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:26,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:26,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 240 transitions, 2238 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) [2024-06-04 14:13:26,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:26,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:26,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:27,273 INFO L124 PetriNetUnfolderBase]: 765/1371 cut-off events. [2024-06-04 14:13:27,273 INFO L125 PetriNetUnfolderBase]: For 122942/122945 co-relation queries the response was YES. [2024-06-04 14:13:27,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7892 conditions, 1371 events. 765/1371 cut-off events. For 122942/122945 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7364 event pairs, 118 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 7738. Up to 1138 conditions per place. [2024-06-04 14:13:27,286 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 209 selfloop transitions, 52 changer transitions 0/263 dead transitions. [2024-06-04 14:13:27,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 263 transitions, 2896 flow [2024-06-04 14:13:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:27,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:13:27,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:13:27,287 INFO L175 Difference]: Start difference. First operand has 303 places, 240 transitions, 2238 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:13:27,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 263 transitions, 2896 flow [2024-06-04 14:13:27,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 263 transitions, 2750 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:13:27,679 INFO L231 Difference]: Finished difference. Result has 306 places, 242 transitions, 2289 flow [2024-06-04 14:13:27,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2289, PETRI_PLACES=306, PETRI_TRANSITIONS=242} [2024-06-04 14:13:27,679 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 274 predicate places. [2024-06-04 14:13:27,679 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 242 transitions, 2289 flow [2024-06-04 14:13:27,679 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) [2024-06-04 14:13:27,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:27,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:27,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:13:27,680 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)] === [2024-06-04 14:13:27,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:27,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1796475393, now seen corresponding path program 18 times [2024-06-04 14:13:27,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:27,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212790465] [2024-06-04 14:13:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:27,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:31,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:31,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212790465] [2024-06-04 14:13:31,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212790465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:31,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:31,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:31,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424096302] [2024-06-04 14:13:31,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:31,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:31,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:31,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:31,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:31,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:31,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 242 transitions, 2289 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) [2024-06-04 14:13:31,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:31,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:31,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:32,131 INFO L124 PetriNetUnfolderBase]: 769/1379 cut-off events. [2024-06-04 14:13:32,131 INFO L125 PetriNetUnfolderBase]: For 125207/125210 co-relation queries the response was YES. [2024-06-04 14:13:32,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7958 conditions, 1379 events. 769/1379 cut-off events. For 125207/125210 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7392 event pairs, 95 based on Foata normal form. 2/1375 useless extension candidates. Maximal degree in co-relation 7803. Up to 1050 conditions per place. [2024-06-04 14:13:32,145 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 188 selfloop transitions, 73 changer transitions 0/263 dead transitions. [2024-06-04 14:13:32,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 263 transitions, 2919 flow [2024-06-04 14:13:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:13:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:13:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:13:32,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:13:32,146 INFO L175 Difference]: Start difference. First operand has 306 places, 242 transitions, 2289 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:13:32,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 263 transitions, 2919 flow [2024-06-04 14:13:32,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 263 transitions, 2742 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-04 14:13:32,597 INFO L231 Difference]: Finished difference. Result has 307 places, 243 transitions, 2320 flow [2024-06-04 14:13:32,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2320, PETRI_PLACES=307, PETRI_TRANSITIONS=243} [2024-06-04 14:13:32,597 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 275 predicate places. [2024-06-04 14:13:32,598 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 243 transitions, 2320 flow [2024-06-04 14:13:32,598 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) [2024-06-04 14:13:32,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:32,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:32,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:13:32,598 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)] === [2024-06-04 14:13:32,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:32,599 INFO L85 PathProgramCache]: Analyzing trace with hash 619614327, now seen corresponding path program 19 times [2024-06-04 14:13:32,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:32,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443516432] [2024-06-04 14:13:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:32,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:35,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:35,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443516432] [2024-06-04 14:13:35,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443516432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:35,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:35,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:35,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112541621] [2024-06-04 14:13:35,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:35,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:35,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:35,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:35,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 243 transitions, 2320 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) [2024-06-04 14:13:35,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:35,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:35,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:36,522 INFO L124 PetriNetUnfolderBase]: 773/1387 cut-off events. [2024-06-04 14:13:36,523 INFO L125 PetriNetUnfolderBase]: For 127895/127898 co-relation queries the response was YES. [2024-06-04 14:13:36,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8073 conditions, 1387 events. 773/1387 cut-off events. For 127895/127898 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7468 event pairs, 145 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 7917. Up to 1236 conditions per place. [2024-06-04 14:13:36,537 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 229 selfloop transitions, 31 changer transitions 0/262 dead transitions. [2024-06-04 14:13:36,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 262 transitions, 2942 flow [2024-06-04 14:13:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:13:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:13:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:13:36,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-04 14:13:36,538 INFO L175 Difference]: Start difference. First operand has 307 places, 243 transitions, 2320 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:13:36,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 262 transitions, 2942 flow [2024-06-04 14:13:36,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 262 transitions, 2744 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 14:13:36,903 INFO L231 Difference]: Finished difference. Result has 309 places, 244 transitions, 2248 flow [2024-06-04 14:13:36,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2248, PETRI_PLACES=309, PETRI_TRANSITIONS=244} [2024-06-04 14:13:36,903 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-04 14:13:36,903 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 244 transitions, 2248 flow [2024-06-04 14:13:36,904 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) [2024-06-04 14:13:36,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:36,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:36,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:13:36,904 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)] === [2024-06-04 14:13:36,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash 619499007, now seen corresponding path program 20 times [2024-06-04 14:13:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:36,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916452721] [2024-06-04 14:13:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:36,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:39,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:39,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916452721] [2024-06-04 14:13:39,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916452721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:39,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:39,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:39,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212833396] [2024-06-04 14:13:39,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:39,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:39,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:39,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:39,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:40,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:40,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 244 transitions, 2248 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) [2024-06-04 14:13:40,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:40,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:40,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:40,684 INFO L124 PetriNetUnfolderBase]: 770/1382 cut-off events. [2024-06-04 14:13:40,684 INFO L125 PetriNetUnfolderBase]: For 114665/114668 co-relation queries the response was YES. [2024-06-04 14:13:40,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 1382 events. 770/1382 cut-off events. For 114665/114668 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7445 event pairs, 145 based on Foata normal form. 2/1378 useless extension candidates. Maximal degree in co-relation 7405. Up to 1231 conditions per place. [2024-06-04 14:13:40,698 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 230 selfloop transitions, 30 changer transitions 0/262 dead transitions. [2024-06-04 14:13:40,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 262 transitions, 2812 flow [2024-06-04 14:13:40,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:13:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:13:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:13:40,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-04 14:13:40,699 INFO L175 Difference]: Start difference. First operand has 309 places, 244 transitions, 2248 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:13:40,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 262 transitions, 2812 flow [2024-06-04 14:13:41,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 262 transitions, 2696 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 14:13:41,117 INFO L231 Difference]: Finished difference. Result has 311 places, 244 transitions, 2196 flow [2024-06-04 14:13:41,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2196, PETRI_PLACES=311, PETRI_TRANSITIONS=244} [2024-06-04 14:13:41,117 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-04 14:13:41,117 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 244 transitions, 2196 flow [2024-06-04 14:13:41,117 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) [2024-06-04 14:13:41,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:41,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:41,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:13:41,118 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)] === [2024-06-04 14:13:41,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:41,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1796468449, now seen corresponding path program 16 times [2024-06-04 14:13:41,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:41,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626129568] [2024-06-04 14:13:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:41,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:45,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:45,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626129568] [2024-06-04 14:13:45,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626129568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:45,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:45,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346971749] [2024-06-04 14:13:45,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:45,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:45,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:46,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:46,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 244 transitions, 2196 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) [2024-06-04 14:13:46,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:46,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:46,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:46,896 INFO L124 PetriNetUnfolderBase]: 776/1392 cut-off events. [2024-06-04 14:13:46,896 INFO L125 PetriNetUnfolderBase]: For 116147/116150 co-relation queries the response was YES. [2024-06-04 14:13:46,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7613 conditions, 1392 events. 776/1392 cut-off events. For 116147/116150 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7513 event pairs, 96 based on Foata normal form. 2/1388 useless extension candidates. Maximal degree in co-relation 7455. Up to 1053 conditions per place. [2024-06-04 14:13:46,911 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 190 selfloop transitions, 76 changer transitions 0/268 dead transitions. [2024-06-04 14:13:46,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 268 transitions, 2872 flow [2024-06-04 14:13:46,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:46,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:13:46,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-04 14:13:46,912 INFO L175 Difference]: Start difference. First operand has 311 places, 244 transitions, 2196 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:13:46,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 268 transitions, 2872 flow [2024-06-04 14:13:47,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 268 transitions, 2677 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:47,352 INFO L231 Difference]: Finished difference. Result has 312 places, 246 transitions, 2250 flow [2024-06-04 14:13:47,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2250, PETRI_PLACES=312, PETRI_TRANSITIONS=246} [2024-06-04 14:13:47,353 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 280 predicate places. [2024-06-04 14:13:47,353 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 246 transitions, 2250 flow [2024-06-04 14:13:47,353 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) [2024-06-04 14:13:47,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:47,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:47,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:13:47,353 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)] === [2024-06-04 14:13:47,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:47,353 INFO L85 PathProgramCache]: Analyzing trace with hash 624267551, now seen corresponding path program 17 times [2024-06-04 14:13:47,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:47,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868492725] [2024-06-04 14:13:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:47,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:51,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:51,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868492725] [2024-06-04 14:13:51,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868492725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:51,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:51,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:51,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401544967] [2024-06-04 14:13:51,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:51,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:51,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:51,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:51,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:51,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:51,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 246 transitions, 2250 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) [2024-06-04 14:13:51,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:51,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:51,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:52,106 INFO L124 PetriNetUnfolderBase]: 772/1386 cut-off events. [2024-06-04 14:13:52,106 INFO L125 PetriNetUnfolderBase]: For 102262/102265 co-relation queries the response was YES. [2024-06-04 14:13:52,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7216 conditions, 1386 events. 772/1386 cut-off events. For 102262/102265 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7481 event pairs, 148 based on Foata normal form. 2/1382 useless extension candidates. Maximal degree in co-relation 7058. Up to 1225 conditions per place. [2024-06-04 14:13:52,122 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 229 selfloop transitions, 35 changer transitions 0/266 dead transitions. [2024-06-04 14:13:52,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 266 transitions, 2826 flow [2024-06-04 14:13:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:52,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:13:52,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-04 14:13:52,123 INFO L175 Difference]: Start difference. First operand has 312 places, 246 transitions, 2250 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:13:52,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 266 transitions, 2826 flow [2024-06-04 14:13:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 266 transitions, 2494 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:52,482 INFO L231 Difference]: Finished difference. Result has 311 places, 246 transitions, 1993 flow [2024-06-04 14:13:52,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1993, PETRI_PLACES=311, PETRI_TRANSITIONS=246} [2024-06-04 14:13:52,482 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-04 14:13:52,482 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 246 transitions, 1993 flow [2024-06-04 14:13:52,483 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) [2024-06-04 14:13:52,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:52,483 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] [2024-06-04 14:13:52,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:13:52,483 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)] === [2024-06-04 14:13:52,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash 366681204, now seen corresponding path program 1 times [2024-06-04 14:13:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:52,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641933858] [2024-06-04 14:13:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:52,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:56,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:56,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641933858] [2024-06-04 14:13:56,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641933858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:56,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:56,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253606942] [2024-06-04 14:13:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:56,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:56,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:56,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 246 transitions, 1993 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) [2024-06-04 14:13:56,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:56,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:56,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:57,046 INFO L124 PetriNetUnfolderBase]: 776/1394 cut-off events. [2024-06-04 14:13:57,046 INFO L125 PetriNetUnfolderBase]: For 100873/100873 co-relation queries the response was YES. [2024-06-04 14:13:57,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6805 conditions, 1394 events. 776/1394 cut-off events. For 100873/100873 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7571 event pairs, 153 based on Foata normal form. 2/1394 useless extension candidates. Maximal degree in co-relation 6649. Up to 1265 conditions per place. [2024-06-04 14:13:57,061 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 246 selfloop transitions, 21 changer transitions 0/269 dead transitions. [2024-06-04 14:13:57,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 269 transitions, 2611 flow [2024-06-04 14:13:57,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:57,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 14:13:57,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3085399449035813 [2024-06-04 14:13:57,063 INFO L175 Difference]: Start difference. First operand has 311 places, 246 transitions, 1993 flow. Second operand 11 states and 112 transitions. [2024-06-04 14:13:57,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 269 transitions, 2611 flow [2024-06-04 14:13:57,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 269 transitions, 2409 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:57,429 INFO L231 Difference]: Finished difference. Result has 311 places, 247 transitions, 1867 flow [2024-06-04 14:13:57,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1867, PETRI_PLACES=311, PETRI_TRANSITIONS=247} [2024-06-04 14:13:57,430 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-04 14:13:57,430 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 247 transitions, 1867 flow [2024-06-04 14:13:57,430 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) [2024-06-04 14:13:57,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:57,430 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] [2024-06-04 14:13:57,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:13:57,431 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)] === [2024-06-04 14:13:57,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:57,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1145366620, now seen corresponding path program 2 times [2024-06-04 14:13:57,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:57,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36982884] [2024-06-04 14:13:57,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:57,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:01,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36982884] [2024-06-04 14:14:01,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36982884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:01,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:01,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:14:01,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714064621] [2024-06-04 14:14:01,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:01,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:14:01,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:01,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:14:01,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:14:01,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:01,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 247 transitions, 1867 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) [2024-06-04 14:14:01,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:01,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:01,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:01,952 INFO L124 PetriNetUnfolderBase]: 780/1402 cut-off events. [2024-06-04 14:14:01,952 INFO L125 PetriNetUnfolderBase]: For 101858/101858 co-relation queries the response was YES. [2024-06-04 14:14:01,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6667 conditions, 1402 events. 780/1402 cut-off events. For 101858/101858 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7612 event pairs, 172 based on Foata normal form. 2/1402 useless extension candidates. Maximal degree in co-relation 6511. Up to 1267 conditions per place. [2024-06-04 14:14:01,963 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 239 selfloop transitions, 29 changer transitions 0/270 dead transitions. [2024-06-04 14:14:01,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 270 transitions, 2489 flow [2024-06-04 14:14:01,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:14:01,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:14:01,964 INFO L175 Difference]: Start difference. First operand has 311 places, 247 transitions, 1867 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:14:01,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 270 transitions, 2489 flow [2024-06-04 14:14:02,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 270 transitions, 2423 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 14:14:02,297 INFO L231 Difference]: Finished difference. Result has 313 places, 248 transitions, 1895 flow [2024-06-04 14:14:02,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1895, PETRI_PLACES=313, PETRI_TRANSITIONS=248} [2024-06-04 14:14:02,297 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2024-06-04 14:14:02,297 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 248 transitions, 1895 flow [2024-06-04 14:14:02,297 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) [2024-06-04 14:14:02,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:02,297 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] [2024-06-04 14:14:02,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:14:02,298 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)] === [2024-06-04 14:14:02,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:02,298 INFO L85 PathProgramCache]: Analyzing trace with hash -35074774, now seen corresponding path program 3 times [2024-06-04 14:14:02,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:02,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065425721] [2024-06-04 14:14:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:02,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:05,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:05,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065425721] [2024-06-04 14:14:05,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065425721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:05,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:05,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:14:05,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943363588] [2024-06-04 14:14:05,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:05,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:14:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:14:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:14:06,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:06,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 248 transitions, 1895 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) [2024-06-04 14:14:06,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:06,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:06,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:06,724 INFO L124 PetriNetUnfolderBase]: 784/1410 cut-off events. [2024-06-04 14:14:06,724 INFO L125 PetriNetUnfolderBase]: For 105481/105481 co-relation queries the response was YES. [2024-06-04 14:14:06,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6738 conditions, 1410 events. 784/1410 cut-off events. For 105481/105481 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7670 event pairs, 172 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 6581. Up to 1275 conditions per place. [2024-06-04 14:14:06,738 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 241 selfloop transitions, 28 changer transitions 0/271 dead transitions. [2024-06-04 14:14:06,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 271 transitions, 2521 flow [2024-06-04 14:14:06,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:14:06,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:14:06,739 INFO L175 Difference]: Start difference. First operand has 313 places, 248 transitions, 1895 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:14:06,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 271 transitions, 2521 flow [2024-06-04 14:14:07,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 271 transitions, 2437 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:14:07,096 INFO L231 Difference]: Finished difference. Result has 315 places, 249 transitions, 1905 flow [2024-06-04 14:14:07,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1905, PETRI_PLACES=315, PETRI_TRANSITIONS=249} [2024-06-04 14:14:07,096 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-04 14:14:07,096 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 249 transitions, 1905 flow [2024-06-04 14:14:07,096 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) [2024-06-04 14:14:07,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:07,096 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] [2024-06-04 14:14:07,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:14:07,097 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)] === [2024-06-04 14:14:07,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash -35218924, now seen corresponding path program 4 times [2024-06-04 14:14:07,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:07,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769949210] [2024-06-04 14:14:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:07,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:10,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:10,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769949210] [2024-06-04 14:14:10,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769949210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:10,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:10,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:14:10,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671391086] [2024-06-04 14:14:10,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:10,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:14:10,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:10,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:14:10,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:14:10,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:10,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 249 transitions, 1905 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) [2024-06-04 14:14:10,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:10,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:10,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:11,445 INFO L124 PetriNetUnfolderBase]: 788/1418 cut-off events. [2024-06-04 14:14:11,446 INFO L125 PetriNetUnfolderBase]: For 107337/107337 co-relation queries the response was YES. [2024-06-04 14:14:11,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 1418 events. 788/1418 cut-off events. For 107337/107337 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7745 event pairs, 172 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 6627. Up to 1285 conditions per place. [2024-06-04 14:14:11,460 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 243 selfloop transitions, 27 changer transitions 0/272 dead transitions. [2024-06-04 14:14:11,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 272 transitions, 2535 flow [2024-06-04 14:14:11,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:14:11,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:14:11,461 INFO L175 Difference]: Start difference. First operand has 315 places, 249 transitions, 1905 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:14:11,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 272 transitions, 2535 flow [2024-06-04 14:14:11,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 272 transitions, 2451 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 14:14:11,817 INFO L231 Difference]: Finished difference. Result has 317 places, 250 transitions, 1915 flow [2024-06-04 14:14:11,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1915, PETRI_PLACES=317, PETRI_TRANSITIONS=250} [2024-06-04 14:14:11,818 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-04 14:14:11,818 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 250 transitions, 1915 flow [2024-06-04 14:14:11,818 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) [2024-06-04 14:14:11,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:11,818 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] [2024-06-04 14:14:11,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:14:11,818 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)] === [2024-06-04 14:14:11,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:11,819 INFO L85 PathProgramCache]: Analyzing trace with hash 424518710, now seen corresponding path program 5 times [2024-06-04 14:14:11,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:11,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721871640] [2024-06-04 14:14:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:11,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:15,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:15,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721871640] [2024-06-04 14:14:15,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721871640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:15,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:15,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:14:15,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107323121] [2024-06-04 14:14:15,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:15,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:14:15,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:15,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:14:15,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:14:15,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:15,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 250 transitions, 1915 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) [2024-06-04 14:14:15,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:15,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:15,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:15,964 INFO L124 PetriNetUnfolderBase]: 792/1426 cut-off events. [2024-06-04 14:14:15,964 INFO L125 PetriNetUnfolderBase]: For 109369/109369 co-relation queries the response was YES. [2024-06-04 14:14:15,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6834 conditions, 1426 events. 792/1426 cut-off events. For 109369/109369 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7784 event pairs, 170 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 6675. Up to 1301 conditions per place. [2024-06-04 14:14:15,979 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 247 selfloop transitions, 24 changer transitions 0/273 dead transitions. [2024-06-04 14:14:15,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 273 transitions, 2549 flow [2024-06-04 14:14:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-04 14:14:15,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-04 14:14:15,981 INFO L175 Difference]: Start difference. First operand has 317 places, 250 transitions, 1915 flow. Second operand 11 states and 114 transitions. [2024-06-04 14:14:15,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 273 transitions, 2549 flow [2024-06-04 14:14:16,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 273 transitions, 2465 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 14:14:16,275 INFO L231 Difference]: Finished difference. Result has 319 places, 251 transitions, 1921 flow [2024-06-04 14:14:16,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1921, PETRI_PLACES=319, PETRI_TRANSITIONS=251} [2024-06-04 14:14:16,275 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:14:16,275 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 251 transitions, 1921 flow [2024-06-04 14:14:16,275 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) [2024-06-04 14:14:16,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:16,276 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] [2024-06-04 14:14:16,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:14:16,276 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)] === [2024-06-04 14:14:16,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1241784850, now seen corresponding path program 1 times [2024-06-04 14:14:16,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:16,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387903480] [2024-06-04 14:14:16,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:16,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:20,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387903480] [2024-06-04 14:14:20,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387903480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:20,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:20,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:14:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890435698] [2024-06-04 14:14:20,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:20,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:14:20,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:20,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:14:20,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:14:20,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:20,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 251 transitions, 1921 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) [2024-06-04 14:14:20,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:20,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:20,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:21,582 INFO L124 PetriNetUnfolderBase]: 808/1462 cut-off events. [2024-06-04 14:14:21,583 INFO L125 PetriNetUnfolderBase]: For 171619/171619 co-relation queries the response was YES. [2024-06-04 14:14:21,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6941 conditions, 1462 events. 808/1462 cut-off events. For 171619/171619 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8027 event pairs, 186 based on Foata normal form. 10/1470 useless extension candidates. Maximal degree in co-relation 6781. Up to 1277 conditions per place. [2024-06-04 14:14:21,606 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 240 selfloop transitions, 28 changer transitions 9/279 dead transitions. [2024-06-04 14:14:21,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 279 transitions, 2583 flow [2024-06-04 14:14:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 14:14:21,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-04 14:14:21,608 INFO L175 Difference]: Start difference. First operand has 319 places, 251 transitions, 1921 flow. Second operand 12 states and 130 transitions. [2024-06-04 14:14:21,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 279 transitions, 2583 flow [2024-06-04 14:14:22,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 279 transitions, 2503 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 14:14:22,188 INFO L231 Difference]: Finished difference. Result has 322 places, 248 transitions, 1884 flow [2024-06-04 14:14:22,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1884, PETRI_PLACES=322, PETRI_TRANSITIONS=248} [2024-06-04 14:14:22,188 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-04 14:14:22,189 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 248 transitions, 1884 flow [2024-06-04 14:14:22,189 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) [2024-06-04 14:14:22,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:22,189 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] [2024-06-04 14:14:22,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:14:22,189 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)] === [2024-06-04 14:14:22,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:22,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1524366632, now seen corresponding path program 6 times [2024-06-04 14:14:22,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:22,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38551149] [2024-06-04 14:14:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:22,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:26,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:26,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38551149] [2024-06-04 14:14:26,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38551149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:26,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:26,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:26,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17373428] [2024-06-04 14:14:26,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:26,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:26,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:26,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:26,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:26,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:26,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 248 transitions, 1884 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) [2024-06-04 14:14:26,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:26,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:26,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:27,274 INFO L124 PetriNetUnfolderBase]: 786/1419 cut-off events. [2024-06-04 14:14:27,274 INFO L125 PetriNetUnfolderBase]: For 112675/112675 co-relation queries the response was YES. [2024-06-04 14:14:27,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 1419 events. 786/1419 cut-off events. For 112675/112675 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7772 event pairs, 158 based on Foata normal form. 2/1419 useless extension candidates. Maximal degree in co-relation 6624. Up to 1202 conditions per place. [2024-06-04 14:14:27,290 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 223 selfloop transitions, 47 changer transitions 0/272 dead transitions. [2024-06-04 14:14:27,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 272 transitions, 2520 flow [2024-06-04 14:14:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:14:27,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:14:27,291 INFO L175 Difference]: Start difference. First operand has 322 places, 248 transitions, 1884 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:14:27,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 272 transitions, 2520 flow [2024-06-04 14:14:27,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 272 transitions, 2458 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:14:27,675 INFO L231 Difference]: Finished difference. Result has 319 places, 249 transitions, 1960 flow [2024-06-04 14:14:27,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1960, PETRI_PLACES=319, PETRI_TRANSITIONS=249} [2024-06-04 14:14:27,675 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:14:27,675 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 249 transitions, 1960 flow [2024-06-04 14:14:27,675 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) [2024-06-04 14:14:27,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:27,676 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] [2024-06-04 14:14:27,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:14:27,676 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)] === [2024-06-04 14:14:27,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash 753801632, now seen corresponding path program 7 times [2024-06-04 14:14:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:27,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559452915] [2024-06-04 14:14:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:27,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:31,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:31,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559452915] [2024-06-04 14:14:31,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559452915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:31,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:31,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:31,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668986748] [2024-06-04 14:14:31,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:31,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:31,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:32,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:32,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 249 transitions, 1960 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) [2024-06-04 14:14:32,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:32,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:32,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:32,988 INFO L124 PetriNetUnfolderBase]: 790/1427 cut-off events. [2024-06-04 14:14:32,988 INFO L125 PetriNetUnfolderBase]: For 111772/111772 co-relation queries the response was YES. [2024-06-04 14:14:33,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6924 conditions, 1427 events. 790/1427 cut-off events. For 111772/111772 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7833 event pairs, 154 based on Foata normal form. 2/1427 useless extension candidates. Maximal degree in co-relation 6764. Up to 1167 conditions per place. [2024-06-04 14:14:33,003 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 216 selfloop transitions, 56 changer transitions 0/274 dead transitions. [2024-06-04 14:14:33,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 274 transitions, 2606 flow [2024-06-04 14:14:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:14:33,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:14:33,005 INFO L175 Difference]: Start difference. First operand has 319 places, 249 transitions, 1960 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:14:33,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 274 transitions, 2606 flow [2024-06-04 14:14:33,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 274 transitions, 2478 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:14:33,355 INFO L231 Difference]: Finished difference. Result has 321 places, 250 transitions, 1990 flow [2024-06-04 14:14:33,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1990, PETRI_PLACES=321, PETRI_TRANSITIONS=250} [2024-06-04 14:14:33,355 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-04 14:14:33,355 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 250 transitions, 1990 flow [2024-06-04 14:14:33,356 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) [2024-06-04 14:14:33,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:33,356 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] [2024-06-04 14:14:33,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:14:33,356 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)] === [2024-06-04 14:14:33,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1723668422, now seen corresponding path program 8 times [2024-06-04 14:14:33,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:33,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678873400] [2024-06-04 14:14:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:33,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:37,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:37,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678873400] [2024-06-04 14:14:37,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678873400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:37,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:37,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:37,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988031448] [2024-06-04 14:14:37,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:37,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:37,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:37,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:37,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:37,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:37,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 250 transitions, 1990 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) [2024-06-04 14:14:37,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:37,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:37,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:38,468 INFO L124 PetriNetUnfolderBase]: 794/1435 cut-off events. [2024-06-04 14:14:38,469 INFO L125 PetriNetUnfolderBase]: For 113798/113798 co-relation queries the response was YES. [2024-06-04 14:14:38,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6999 conditions, 1435 events. 794/1435 cut-off events. For 113798/113798 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7887 event pairs, 154 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 6838. Up to 1257 conditions per place. [2024-06-04 14:14:38,482 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 232 selfloop transitions, 39 changer transitions 0/273 dead transitions. [2024-06-04 14:14:38,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 273 transitions, 2628 flow [2024-06-04 14:14:38,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:14:38,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:14:38,483 INFO L175 Difference]: Start difference. First operand has 321 places, 250 transitions, 1990 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:14:38,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 273 transitions, 2628 flow [2024-06-04 14:14:38,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 273 transitions, 2480 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 14:14:38,843 INFO L231 Difference]: Finished difference. Result has 323 places, 251 transitions, 1968 flow [2024-06-04 14:14:38,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1968, PETRI_PLACES=323, PETRI_TRANSITIONS=251} [2024-06-04 14:14:38,843 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-04 14:14:38,843 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 251 transitions, 1968 flow [2024-06-04 14:14:38,843 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) [2024-06-04 14:14:38,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:38,843 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] [2024-06-04 14:14:38,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:14:38,844 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)] === [2024-06-04 14:14:38,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1574490840, now seen corresponding path program 9 times [2024-06-04 14:14:38,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:38,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104179903] [2024-06-04 14:14:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:42,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:42,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104179903] [2024-06-04 14:14:42,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104179903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:42,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:42,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:42,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027931514] [2024-06-04 14:14:42,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:42,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:42,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:42,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:42,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:42,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:42,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 251 transitions, 1968 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) [2024-06-04 14:14:42,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:42,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:42,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:43,160 INFO L124 PetriNetUnfolderBase]: 798/1443 cut-off events. [2024-06-04 14:14:43,160 INFO L125 PetriNetUnfolderBase]: For 115615/115615 co-relation queries the response was YES. [2024-06-04 14:14:43,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6998 conditions, 1443 events. 798/1443 cut-off events. For 115615/115615 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7919 event pairs, 162 based on Foata normal form. 2/1443 useless extension candidates. Maximal degree in co-relation 6836. Up to 1300 conditions per place. [2024-06-04 14:14:43,176 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 240 selfloop transitions, 31 changer transitions 0/273 dead transitions. [2024-06-04 14:14:43,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 273 transitions, 2604 flow [2024-06-04 14:14:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:14:43,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:14:43,177 INFO L175 Difference]: Start difference. First operand has 323 places, 251 transitions, 1968 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:14:43,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 273 transitions, 2604 flow [2024-06-04 14:14:43,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 273 transitions, 2488 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:14:43,549 INFO L231 Difference]: Finished difference. Result has 325 places, 252 transitions, 1964 flow [2024-06-04 14:14:43,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1964, PETRI_PLACES=325, PETRI_TRANSITIONS=252} [2024-06-04 14:14:43,549 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-04 14:14:43,549 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 252 transitions, 1964 flow [2024-06-04 14:14:43,549 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) [2024-06-04 14:14:43,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:43,549 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] [2024-06-04 14:14:43,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 14:14:43,550 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)] === [2024-06-04 14:14:43,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:43,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1517220496, now seen corresponding path program 10 times [2024-06-04 14:14:43,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:43,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585071126] [2024-06-04 14:14:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:43,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:47,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:47,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585071126] [2024-06-04 14:14:47,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585071126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:47,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:47,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:47,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510091347] [2024-06-04 14:14:47,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:47,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:47,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:47,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:47,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 252 transitions, 1964 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) [2024-06-04 14:14:47,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:47,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:47,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:48,610 INFO L124 PetriNetUnfolderBase]: 802/1451 cut-off events. [2024-06-04 14:14:48,610 INFO L125 PetriNetUnfolderBase]: For 117472/117472 co-relation queries the response was YES. [2024-06-04 14:14:48,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7023 conditions, 1451 events. 802/1451 cut-off events. For 117472/117472 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7986 event pairs, 168 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 6860. Up to 1308 conditions per place. [2024-06-04 14:14:48,622 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 242 selfloop transitions, 30 changer transitions 0/274 dead transitions. [2024-06-04 14:14:48,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 274 transitions, 2604 flow [2024-06-04 14:14:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:14:48,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:14:48,623 INFO L175 Difference]: Start difference. First operand has 325 places, 252 transitions, 1964 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:14:48,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 274 transitions, 2604 flow [2024-06-04 14:14:49,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 274 transitions, 2502 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 14:14:49,016 INFO L231 Difference]: Finished difference. Result has 327 places, 253 transitions, 1974 flow [2024-06-04 14:14:49,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1974, PETRI_PLACES=327, PETRI_TRANSITIONS=253} [2024-06-04 14:14:49,017 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-04 14:14:49,017 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 253 transitions, 1974 flow [2024-06-04 14:14:49,017 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) [2024-06-04 14:14:49,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:49,017 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] [2024-06-04 14:14:49,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 14:14:49,017 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)] === [2024-06-04 14:14:49,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1581636976, now seen corresponding path program 11 times [2024-06-04 14:14:49,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:49,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674508179] [2024-06-04 14:14:49,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:49,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:53,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:53,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674508179] [2024-06-04 14:14:53,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674508179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:53,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:53,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:53,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360049088] [2024-06-04 14:14:53,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:53,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:53,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:53,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:53,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:53,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:53,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 253 transitions, 1974 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) [2024-06-04 14:14:53,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:53,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:53,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:54,022 INFO L124 PetriNetUnfolderBase]: 806/1459 cut-off events. [2024-06-04 14:14:54,022 INFO L125 PetriNetUnfolderBase]: For 119454/119454 co-relation queries the response was YES. [2024-06-04 14:14:54,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7070 conditions, 1459 events. 806/1459 cut-off events. For 119454/119454 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8054 event pairs, 158 based on Foata normal form. 2/1459 useless extension candidates. Maximal degree in co-relation 6906. Up to 1242 conditions per place. [2024-06-04 14:14:54,039 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 229 selfloop transitions, 46 changer transitions 0/277 dead transitions. [2024-06-04 14:14:54,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 277 transitions, 2630 flow [2024-06-04 14:14:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:14:54,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:14:54,041 INFO L175 Difference]: Start difference. First operand has 327 places, 253 transitions, 1974 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:14:54,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 277 transitions, 2630 flow [2024-06-04 14:14:54,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 277 transitions, 2528 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 14:14:54,477 INFO L231 Difference]: Finished difference. Result has 329 places, 254 transitions, 2018 flow [2024-06-04 14:14:54,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=318, 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=11, PETRI_FLOW=2018, PETRI_PLACES=329, PETRI_TRANSITIONS=254} [2024-06-04 14:14:54,477 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-04 14:14:54,477 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 254 transitions, 2018 flow [2024-06-04 14:14:54,477 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) [2024-06-04 14:14:54,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:54,478 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] [2024-06-04 14:14:54,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 14:14:54,478 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)] === [2024-06-04 14:14:54,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:54,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1517076346, now seen corresponding path program 12 times [2024-06-04 14:14:54,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:54,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684519763] [2024-06-04 14:14:54,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:54,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:58,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:58,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684519763] [2024-06-04 14:14:58,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684519763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:58,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:58,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:58,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268886570] [2024-06-04 14:14:58,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:58,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:58,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:58,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:58,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:58,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 254 transitions, 2018 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) [2024-06-04 14:14:58,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:58,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:58,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:59,186 INFO L124 PetriNetUnfolderBase]: 810/1467 cut-off events. [2024-06-04 14:14:59,186 INFO L125 PetriNetUnfolderBase]: For 121532/121532 co-relation queries the response was YES. [2024-06-04 14:14:59,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7169 conditions, 1467 events. 810/1467 cut-off events. For 121532/121532 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8115 event pairs, 164 based on Foata normal form. 2/1467 useless extension candidates. Maximal degree in co-relation 7004. Up to 1324 conditions per place. [2024-06-04 14:14:59,202 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 245 selfloop transitions, 29 changer transitions 0/276 dead transitions. [2024-06-04 14:14:59,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 276 transitions, 2666 flow [2024-06-04 14:14:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:59,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:14:59,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:14:59,203 INFO L175 Difference]: Start difference. First operand has 329 places, 254 transitions, 2018 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:14:59,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 276 transitions, 2666 flow [2024-06-04 14:14:59,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 276 transitions, 2530 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:14:59,569 INFO L231 Difference]: Finished difference. Result has 331 places, 255 transitions, 1996 flow [2024-06-04 14:14:59,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1996, PETRI_PLACES=331, PETRI_TRANSITIONS=255} [2024-06-04 14:14:59,569 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 299 predicate places. [2024-06-04 14:14:59,569 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 255 transitions, 1996 flow [2024-06-04 14:14:59,569 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) [2024-06-04 14:14:59,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:59,570 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] [2024-06-04 14:14:59,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 14:14:59,570 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)] === [2024-06-04 14:14:59,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1513501426, now seen corresponding path program 13 times [2024-06-04 14:14:59,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:59,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100234838] [2024-06-04 14:14:59,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:59,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:03,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:03,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:03,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100234838] [2024-06-04 14:15:03,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100234838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:03,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:03,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:03,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864883006] [2024-06-04 14:15:03,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:03,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:04,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:04,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 255 transitions, 1996 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) [2024-06-04 14:15:04,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:04,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:04,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:04,679 INFO L124 PetriNetUnfolderBase]: 814/1475 cut-off events. [2024-06-04 14:15:04,680 INFO L125 PetriNetUnfolderBase]: For 123618/123618 co-relation queries the response was YES. [2024-06-04 14:15:04,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7170 conditions, 1475 events. 814/1475 cut-off events. For 123618/123618 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8186 event pairs, 164 based on Foata normal form. 2/1475 useless extension candidates. Maximal degree in co-relation 7004. Up to 1332 conditions per place. [2024-06-04 14:15:04,697 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 247 selfloop transitions, 28 changer transitions 0/277 dead transitions. [2024-06-04 14:15:04,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 277 transitions, 2648 flow [2024-06-04 14:15:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:04,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:04,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:15:04,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:15:04,698 INFO L175 Difference]: Start difference. First operand has 331 places, 255 transitions, 1996 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:15:04,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 277 transitions, 2648 flow [2024-06-04 14:15:05,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 277 transitions, 2544 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:15:05,086 INFO L231 Difference]: Finished difference. Result has 333 places, 256 transitions, 2006 flow [2024-06-04 14:15:05,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2006, PETRI_PLACES=333, PETRI_TRANSITIONS=256} [2024-06-04 14:15:05,087 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-04 14:15:05,087 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 256 transitions, 2006 flow [2024-06-04 14:15:05,087 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) [2024-06-04 14:15:05,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:05,087 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] [2024-06-04 14:15:05,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 14:15:05,087 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)] === [2024-06-04 14:15:05,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:05,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1661326352, now seen corresponding path program 2 times [2024-06-04 14:15:05,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:05,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027098960] [2024-06-04 14:15:05,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:05,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:09,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:09,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:09,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027098960] [2024-06-04 14:15:09,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027098960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:09,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:09,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:09,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436165492] [2024-06-04 14:15:09,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:09,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:09,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:09,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:09,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:09,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:09,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 256 transitions, 2006 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) [2024-06-04 14:15:09,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:09,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:09,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:10,567 INFO L124 PetriNetUnfolderBase]: 830/1511 cut-off events. [2024-06-04 14:15:10,568 INFO L125 PetriNetUnfolderBase]: For 192450/192450 co-relation queries the response was YES. [2024-06-04 14:15:10,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7251 conditions, 1511 events. 830/1511 cut-off events. For 192450/192450 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8411 event pairs, 180 based on Foata normal form. 10/1519 useless extension candidates. Maximal degree in co-relation 7084. Up to 1318 conditions per place. [2024-06-04 14:15:10,585 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 242 selfloop transitions, 30 changer transitions 9/283 dead transitions. [2024-06-04 14:15:10,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 283 transitions, 2670 flow [2024-06-04 14:15:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:15:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:15:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 14:15:10,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33080808080808083 [2024-06-04 14:15:10,586 INFO L175 Difference]: Start difference. First operand has 333 places, 256 transitions, 2006 flow. Second operand 12 states and 131 transitions. [2024-06-04 14:15:10,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 283 transitions, 2670 flow [2024-06-04 14:15:10,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 283 transitions, 2566 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:15:10,983 INFO L231 Difference]: Finished difference. Result has 336 places, 253 transitions, 1949 flow [2024-06-04 14:15:10,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1949, PETRI_PLACES=336, PETRI_TRANSITIONS=253} [2024-06-04 14:15:10,983 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 304 predicate places. [2024-06-04 14:15:10,983 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 253 transitions, 1949 flow [2024-06-04 14:15:10,983 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) [2024-06-04 14:15:10,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:10,984 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] [2024-06-04 14:15:10,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 14:15:10,984 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)] === [2024-06-04 14:15:10,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1581421650, now seen corresponding path program 3 times [2024-06-04 14:15:10,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:10,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424078944] [2024-06-04 14:15:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:10,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:15,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424078944] [2024-06-04 14:15:15,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424078944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:15,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:15,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:15,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860133498] [2024-06-04 14:15:15,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:15,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:15,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:15,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:15,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 253 transitions, 1949 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) [2024-06-04 14:15:15,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:15,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:15,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:16,541 INFO L124 PetriNetUnfolderBase]: 820/1497 cut-off events. [2024-06-04 14:15:16,541 INFO L125 PetriNetUnfolderBase]: For 194147/194147 co-relation queries the response was YES. [2024-06-04 14:15:16,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7122 conditions, 1497 events. 820/1497 cut-off events. For 194147/194147 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8367 event pairs, 172 based on Foata normal form. 10/1505 useless extension candidates. Maximal degree in co-relation 6954. Up to 1236 conditions per place. [2024-06-04 14:15:16,558 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 224 selfloop transitions, 45 changer transitions 11/282 dead transitions. [2024-06-04 14:15:16,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 282 transitions, 2619 flow [2024-06-04 14:15:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:15:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:15:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 14:15:16,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-06-04 14:15:16,559 INFO L175 Difference]: Start difference. First operand has 336 places, 253 transitions, 1949 flow. Second operand 12 states and 134 transitions. [2024-06-04 14:15:16,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 282 transitions, 2619 flow [2024-06-04 14:15:16,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 282 transitions, 2553 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:15:16,958 INFO L231 Difference]: Finished difference. Result has 334 places, 250 transitions, 1958 flow [2024-06-04 14:15:16,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1958, PETRI_PLACES=334, PETRI_TRANSITIONS=250} [2024-06-04 14:15:16,958 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 302 predicate places. [2024-06-04 14:15:16,958 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 250 transitions, 1958 flow [2024-06-04 14:15:16,958 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) [2024-06-04 14:15:16,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:16,958 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] [2024-06-04 14:15:16,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 14:15:16,959 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)] === [2024-06-04 14:15:16,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:16,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1574012340, now seen corresponding path program 4 times [2024-06-04 14:15:16,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:16,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956926854] [2024-06-04 14:15:16,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:16,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:21,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:21,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956926854] [2024-06-04 14:15:21,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956926854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:21,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:21,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:21,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213932513] [2024-06-04 14:15:21,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:21,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:21,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:21,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:21,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:21,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:21,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 250 transitions, 1958 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) [2024-06-04 14:15:21,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:21,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:21,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:22,776 INFO L124 PetriNetUnfolderBase]: 816/1493 cut-off events. [2024-06-04 14:15:22,776 INFO L125 PetriNetUnfolderBase]: For 191396/191396 co-relation queries the response was YES. [2024-06-04 14:15:22,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7129 conditions, 1493 events. 816/1493 cut-off events. For 191396/191396 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8338 event pairs, 166 based on Foata normal form. 10/1501 useless extension candidates. Maximal degree in co-relation 6962. Up to 1156 conditions per place. [2024-06-04 14:15:22,792 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 213 selfloop transitions, 57 changer transitions 8/280 dead transitions. [2024-06-04 14:15:22,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 280 transitions, 2634 flow [2024-06-04 14:15:22,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:15:22,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-04 14:15:22,793 INFO L175 Difference]: Start difference. First operand has 334 places, 250 transitions, 1958 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:15:22,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 280 transitions, 2634 flow [2024-06-04 14:15:23,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 280 transitions, 2540 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:15:23,130 INFO L231 Difference]: Finished difference. Result has 332 places, 248 transitions, 1974 flow [2024-06-04 14:15:23,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1974, PETRI_PLACES=332, PETRI_TRANSITIONS=248} [2024-06-04 14:15:23,130 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 300 predicate places. [2024-06-04 14:15:23,130 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 248 transitions, 1974 flow [2024-06-04 14:15:23,131 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) [2024-06-04 14:15:23,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:23,131 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] [2024-06-04 14:15:23,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 14:15:23,131 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)] === [2024-06-04 14:15:23,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:23,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1780938766, now seen corresponding path program 14 times [2024-06-04 14:15:23,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:23,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819840569] [2024-06-04 14:15:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:23,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:27,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:27,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819840569] [2024-06-04 14:15:27,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819840569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:27,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:27,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791451889] [2024-06-04 14:15:27,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:27,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:27,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:27,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 248 transitions, 1974 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) [2024-06-04 14:15:27,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:27,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:27,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:28,186 INFO L124 PetriNetUnfolderBase]: 794/1451 cut-off events. [2024-06-04 14:15:28,186 INFO L125 PetriNetUnfolderBase]: For 122780/122780 co-relation queries the response was YES. [2024-06-04 14:15:28,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7083 conditions, 1451 events. 794/1451 cut-off events. For 122780/122780 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8102 event pairs, 170 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 6916. Up to 1273 conditions per place. [2024-06-04 14:15:28,199 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 231 selfloop transitions, 38 changer transitions 0/271 dead transitions. [2024-06-04 14:15:28,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 271 transitions, 2620 flow [2024-06-04 14:15:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:15:28,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-04 14:15:28,200 INFO L175 Difference]: Start difference. First operand has 332 places, 248 transitions, 1974 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:15:28,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 271 transitions, 2620 flow [2024-06-04 14:15:28,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 271 transitions, 2494 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 14:15:28,590 INFO L231 Difference]: Finished difference. Result has 331 places, 249 transitions, 1984 flow [2024-06-04 14:15:28,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1984, PETRI_PLACES=331, PETRI_TRANSITIONS=249} [2024-06-04 14:15:28,590 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 299 predicate places. [2024-06-04 14:15:28,590 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 249 transitions, 1984 flow [2024-06-04 14:15:28,590 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) [2024-06-04 14:15:28,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:28,590 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] [2024-06-04 14:15:28,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 14:15:28,591 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)] === [2024-06-04 14:15:28,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1781082916, now seen corresponding path program 15 times [2024-06-04 14:15:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:28,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916127535] [2024-06-04 14:15:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:28,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:32,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:32,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916127535] [2024-06-04 14:15:32,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916127535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:32,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:32,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:32,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56157630] [2024-06-04 14:15:32,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:32,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:32,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:32,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:32,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:32,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:32,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 249 transitions, 1984 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) [2024-06-04 14:15:32,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:32,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:32,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:33,269 INFO L124 PetriNetUnfolderBase]: 798/1459 cut-off events. [2024-06-04 14:15:33,269 INFO L125 PetriNetUnfolderBase]: For 124415/124415 co-relation queries the response was YES. [2024-06-04 14:15:33,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7148 conditions, 1459 events. 798/1459 cut-off events. For 124415/124415 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8155 event pairs, 170 based on Foata normal form. 2/1459 useless extension candidates. Maximal degree in co-relation 6982. Up to 1281 conditions per place. [2024-06-04 14:15:33,284 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 233 selfloop transitions, 37 changer transitions 0/272 dead transitions. [2024-06-04 14:15:33,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 272 transitions, 2634 flow [2024-06-04 14:15:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:33,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:15:33,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:15:33,286 INFO L175 Difference]: Start difference. First operand has 331 places, 249 transitions, 1984 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:15:33,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 272 transitions, 2634 flow [2024-06-04 14:15:33,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 272 transitions, 2508 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:15:33,651 INFO L231 Difference]: Finished difference. Result has 333 places, 250 transitions, 1994 flow [2024-06-04 14:15:33,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1994, PETRI_PLACES=333, PETRI_TRANSITIONS=250} [2024-06-04 14:15:33,652 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-04 14:15:33,652 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 250 transitions, 1994 flow [2024-06-04 14:15:33,652 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) [2024-06-04 14:15:33,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:33,652 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] [2024-06-04 14:15:33,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 14:15:33,653 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)] === [2024-06-04 14:15:33,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:33,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1984376434, now seen corresponding path program 5 times [2024-06-04 14:15:33,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:33,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827950211] [2024-06-04 14:15:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:33,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:38,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:38,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827950211] [2024-06-04 14:15:38,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827950211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:38,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:38,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:38,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739266962] [2024-06-04 14:15:38,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:38,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:38,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:38,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 250 transitions, 1994 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) [2024-06-04 14:15:38,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:38,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:38,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:39,547 INFO L124 PetriNetUnfolderBase]: 814/1495 cut-off events. [2024-06-04 14:15:39,548 INFO L125 PetriNetUnfolderBase]: For 193024/193024 co-relation queries the response was YES. [2024-06-04 14:15:39,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7221 conditions, 1495 events. 814/1495 cut-off events. For 193024/193024 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8391 event pairs, 174 based on Foata normal form. 10/1503 useless extension candidates. Maximal degree in co-relation 7054. Up to 1273 conditions per place. [2024-06-04 14:15:39,564 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 228 selfloop transitions, 37 changer transitions 11/278 dead transitions. [2024-06-04 14:15:39,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 278 transitions, 2652 flow [2024-06-04 14:15:39,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:15:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:15:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 14:15:39,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:15:39,565 INFO L175 Difference]: Start difference. First operand has 333 places, 250 transitions, 1994 flow. Second operand 12 states and 132 transitions. [2024-06-04 14:15:39,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 278 transitions, 2652 flow [2024-06-04 14:15:39,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 278 transitions, 2526 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 14:15:39,991 INFO L231 Difference]: Finished difference. Result has 336 places, 247 transitions, 1927 flow [2024-06-04 14:15:39,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1927, PETRI_PLACES=336, PETRI_TRANSITIONS=247} [2024-06-04 14:15:39,991 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 304 predicate places. [2024-06-04 14:15:39,991 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 247 transitions, 1927 flow [2024-06-04 14:15:39,991 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) [2024-06-04 14:15:39,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:39,991 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] [2024-06-04 14:15:39,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 14:15:39,991 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)] === [2024-06-04 14:15:39,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1574003040, now seen corresponding path program 6 times [2024-06-04 14:15:39,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:39,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328659532] [2024-06-04 14:15:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:39,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:43,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:43,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:43,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328659532] [2024-06-04 14:15:43,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328659532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:43,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:43,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:15:43,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12737877] [2024-06-04 14:15:43,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:43,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:15:43,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:43,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:15:43,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:15:43,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:43,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 247 transitions, 1927 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:43,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:43,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:43,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:44,855 INFO L124 PetriNetUnfolderBase]: 829/1533 cut-off events. [2024-06-04 14:15:44,855 INFO L125 PetriNetUnfolderBase]: For 263423/263426 co-relation queries the response was YES. [2024-06-04 14:15:44,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8603 conditions, 1533 events. 829/1533 cut-off events. For 263423/263426 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8603 event pairs, 119 based on Foata normal form. 8/1535 useless extension candidates. Maximal degree in co-relation 8435. Up to 689 conditions per place. [2024-06-04 14:15:44,872 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 136 selfloop transitions, 124 changer transitions 18/280 dead transitions. [2024-06-04 14:15:44,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 280 transitions, 2899 flow [2024-06-04 14:15:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:44,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:15:44,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-04 14:15:44,873 INFO L175 Difference]: Start difference. First operand has 336 places, 247 transitions, 1927 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:15:44,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 280 transitions, 2899 flow [2024-06-04 14:15:45,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 280 transitions, 2817 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:15:45,564 INFO L231 Difference]: Finished difference. Result has 333 places, 235 transitions, 2014 flow [2024-06-04 14:15:45,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2014, PETRI_PLACES=333, PETRI_TRANSITIONS=235} [2024-06-04 14:15:45,564 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-04 14:15:45,564 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 235 transitions, 2014 flow [2024-06-04 14:15:45,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:45,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:45,564 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] [2024-06-04 14:15:45,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 14:15:45,565 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)] === [2024-06-04 14:15:45,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:45,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1023203580, now seen corresponding path program 7 times [2024-06-04 14:15:45,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:45,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673635167] [2024-06-04 14:15:45,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:45,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:50,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:50,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673635167] [2024-06-04 14:15:50,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673635167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:50,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:50,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:50,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955926899] [2024-06-04 14:15:50,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:50,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:50,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:50,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:50,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:50,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:50,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 235 transitions, 2014 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) [2024-06-04 14:15:50,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:50,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:50,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:51,616 INFO L124 PetriNetUnfolderBase]: 774/1439 cut-off events. [2024-06-04 14:15:51,617 INFO L125 PetriNetUnfolderBase]: For 277027/277027 co-relation queries the response was YES. [2024-06-04 14:15:51,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8540 conditions, 1439 events. 774/1439 cut-off events. For 277027/277027 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7994 event pairs, 177 based on Foata normal form. 10/1447 useless extension candidates. Maximal degree in co-relation 8387. Up to 1135 conditions per place. [2024-06-04 14:15:51,632 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 203 selfloop transitions, 49 changer transitions 11/265 dead transitions. [2024-06-04 14:15:51,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 265 transitions, 2654 flow [2024-06-04 14:15:51,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:15:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:15:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 14:15:51,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:15:51,633 INFO L175 Difference]: Start difference. First operand has 333 places, 235 transitions, 2014 flow. Second operand 12 states and 135 transitions. [2024-06-04 14:15:51,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 265 transitions, 2654 flow [2024-06-04 14:15:52,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 265 transitions, 2390 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-04 14:15:52,330 INFO L231 Difference]: Finished difference. Result has 322 places, 232 transitions, 1835 flow [2024-06-04 14:15:52,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1835, PETRI_PLACES=322, PETRI_TRANSITIONS=232} [2024-06-04 14:15:52,331 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-04 14:15:52,331 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 232 transitions, 1835 flow [2024-06-04 14:15:52,331 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) [2024-06-04 14:15:52,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:52,331 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] [2024-06-04 14:15:52,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 14:15:52,331 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)] === [2024-06-04 14:15:52,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 416433440, now seen corresponding path program 16 times [2024-06-04 14:15:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729309263] [2024-06-04 14:15:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:52,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:56,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729309263] [2024-06-04 14:15:56,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729309263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:56,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:56,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:56,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012238397] [2024-06-04 14:15:56,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:56,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:56,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:56,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:56,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:56,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 232 transitions, 1835 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) [2024-06-04 14:15:56,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:56,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:56,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:57,484 INFO L124 PetriNetUnfolderBase]: 723/1339 cut-off events. [2024-06-04 14:15:57,485 INFO L125 PetriNetUnfolderBase]: For 116563/116566 co-relation queries the response was YES. [2024-06-04 14:15:57,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6607 conditions, 1339 events. 723/1339 cut-off events. For 116563/116566 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7387 event pairs, 144 based on Foata normal form. 2/1335 useless extension candidates. Maximal degree in co-relation 6459. Up to 1114 conditions per place. [2024-06-04 14:15:57,499 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 206 selfloop transitions, 49 changer transitions 0/257 dead transitions. [2024-06-04 14:15:57,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 257 transitions, 2465 flow [2024-06-04 14:15:57,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:15:57,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-04 14:15:57,500 INFO L175 Difference]: Start difference. First operand has 322 places, 232 transitions, 1835 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:15:57,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 257 transitions, 2465 flow [2024-06-04 14:15:57,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 257 transitions, 2363 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:15:57,969 INFO L231 Difference]: Finished difference. Result has 319 places, 233 transitions, 1895 flow [2024-06-04 14:15:57,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1895, PETRI_PLACES=319, PETRI_TRANSITIONS=233} [2024-06-04 14:15:57,970 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:15:57,970 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 233 transitions, 1895 flow [2024-06-04 14:15:57,970 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) [2024-06-04 14:15:57,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:57,970 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] [2024-06-04 14:15:57,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 14:15:57,970 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)] === [2024-06-04 14:15:57,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:57,971 INFO L85 PathProgramCache]: Analyzing trace with hash 416700846, now seen corresponding path program 8 times [2024-06-04 14:15:57,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:57,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92116870] [2024-06-04 14:15:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:57,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:02,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:02,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92116870] [2024-06-04 14:16:02,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92116870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:02,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:02,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:16:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690156303] [2024-06-04 14:16:02,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:02,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:16:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:16:02,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:16:02,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:02,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 233 transitions, 1895 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:02,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:02,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:02,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:03,423 INFO L124 PetriNetUnfolderBase]: 739/1375 cut-off events. [2024-06-04 14:16:03,423 INFO L125 PetriNetUnfolderBase]: For 176732/176735 co-relation queries the response was YES. [2024-06-04 14:16:03,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6759 conditions, 1375 events. 739/1375 cut-off events. For 176732/176735 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7610 event pairs, 108 based on Foata normal form. 10/1379 useless extension candidates. Maximal degree in co-relation 6612. Up to 757 conditions per place. [2024-06-04 14:16:03,436 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 127 selfloop transitions, 115 changer transitions 17/261 dead transitions. [2024-06-04 14:16:03,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 261 transitions, 2521 flow [2024-06-04 14:16:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:16:03,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-04 14:16:03,437 INFO L175 Difference]: Start difference. First operand has 319 places, 233 transitions, 1895 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:16:03,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 261 transitions, 2521 flow [2024-06-04 14:16:03,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 261 transitions, 2369 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:03,902 INFO L231 Difference]: Finished difference. Result has 321 places, 225 transitions, 1926 flow [2024-06-04 14:16:03,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1926, PETRI_PLACES=321, PETRI_TRANSITIONS=225} [2024-06-04 14:16:03,902 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-04 14:16:03,902 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 225 transitions, 1926 flow [2024-06-04 14:16:03,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:03,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:03,903 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] [2024-06-04 14:16:03,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 14:16:03,903 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)] === [2024-06-04 14:16:03,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:03,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1063171420, now seen corresponding path program 9 times [2024-06-04 14:16:03,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:03,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655667122] [2024-06-04 14:16:03,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:03,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:08,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:08,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655667122] [2024-06-04 14:16:08,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655667122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:08,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:08,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:08,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806636919] [2024-06-04 14:16:08,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:08,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:08,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:08,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:08,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:08,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:08,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 225 transitions, 1926 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) [2024-06-04 14:16:08,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:08,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:08,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:09,575 INFO L124 PetriNetUnfolderBase]: 715/1335 cut-off events. [2024-06-04 14:16:09,576 INFO L125 PetriNetUnfolderBase]: For 177942/177945 co-relation queries the response was YES. [2024-06-04 14:16:09,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6706 conditions, 1335 events. 715/1335 cut-off events. For 177942/177945 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7355 event pairs, 144 based on Foata normal form. 10/1339 useless extension candidates. Maximal degree in co-relation 6558. Up to 1036 conditions per place. [2024-06-04 14:16:09,588 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 194 selfloop transitions, 50 changer transitions 9/255 dead transitions. [2024-06-04 14:16:09,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 255 transitions, 2544 flow [2024-06-04 14:16:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:16:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:16:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 14:16:09,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:16:09,589 INFO L175 Difference]: Start difference. First operand has 321 places, 225 transitions, 1926 flow. Second operand 12 states and 140 transitions. [2024-06-04 14:16:09,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 255 transitions, 2544 flow [2024-06-04 14:16:10,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 255 transitions, 2292 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-04 14:16:10,032 INFO L231 Difference]: Finished difference. Result has 314 places, 222 transitions, 1767 flow [2024-06-04 14:16:10,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1767, PETRI_PLACES=314, PETRI_TRANSITIONS=222} [2024-06-04 14:16:10,033 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-04 14:16:10,033 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 222 transitions, 1767 flow [2024-06-04 14:16:10,033 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) [2024-06-04 14:16:10,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:10,033 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] [2024-06-04 14:16:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 14:16:10,034 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)] === [2024-06-04 14:16:10,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2003314682, now seen corresponding path program 17 times [2024-06-04 14:16:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:10,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743313922] [2024-06-04 14:16:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:10,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:14,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:14,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743313922] [2024-06-04 14:16:14,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743313922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:14,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:14,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:16:14,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858868998] [2024-06-04 14:16:14,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:14,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:16:14,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:14,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:16:14,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:16:14,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:14,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 222 transitions, 1767 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) [2024-06-04 14:16:14,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:14,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:14,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:15,211 INFO L124 PetriNetUnfolderBase]: 693/1293 cut-off events. [2024-06-04 14:16:15,212 INFO L125 PetriNetUnfolderBase]: For 110496/110499 co-relation queries the response was YES. [2024-06-04 14:16:15,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6380 conditions, 1293 events. 693/1293 cut-off events. For 110496/110499 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7136 event pairs, 124 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 6236. Up to 1026 conditions per place. [2024-06-04 14:16:15,224 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 187 selfloop transitions, 58 changer transitions 0/247 dead transitions. [2024-06-04 14:16:15,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 247 transitions, 2379 flow [2024-06-04 14:16:15,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:15,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:16:15,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:16:15,225 INFO L175 Difference]: Start difference. First operand has 314 places, 222 transitions, 1767 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:16:15,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 247 transitions, 2379 flow [2024-06-04 14:16:15,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 247 transitions, 2273 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:16:15,642 INFO L231 Difference]: Finished difference. Result has 311 places, 223 transitions, 1843 flow [2024-06-04 14:16:15,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1843, PETRI_PLACES=311, PETRI_TRANSITIONS=223} [2024-06-04 14:16:15,642 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-04 14:16:15,642 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 223 transitions, 1843 flow [2024-06-04 14:16:15,642 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) [2024-06-04 14:16:15,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:15,642 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] [2024-06-04 14:16:15,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 14:16:15,642 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)] === [2024-06-04 14:16:15,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:15,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1070531006, now seen corresponding path program 18 times [2024-06-04 14:16:15,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:15,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142708723] [2024-06-04 14:16:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:15,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:19,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:19,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142708723] [2024-06-04 14:16:19,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142708723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:19,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:19,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:16:19,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127359350] [2024-06-04 14:16:19,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:19,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:16:19,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:19,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:16:19,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:16:19,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:19,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 223 transitions, 1843 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) [2024-06-04 14:16:19,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:19,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:19,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:20,512 INFO L124 PetriNetUnfolderBase]: 697/1301 cut-off events. [2024-06-04 14:16:20,512 INFO L125 PetriNetUnfolderBase]: For 110776/110779 co-relation queries the response was YES. [2024-06-04 14:16:20,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6537 conditions, 1301 events. 697/1301 cut-off events. For 110776/110779 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7191 event pairs, 142 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 6394. Up to 1106 conditions per place. [2024-06-04 14:16:20,526 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 203 selfloop transitions, 42 changer transitions 0/247 dead transitions. [2024-06-04 14:16:20,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 247 transitions, 2453 flow [2024-06-04 14:16:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:20,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:16:20,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:16:20,527 INFO L175 Difference]: Start difference. First operand has 311 places, 223 transitions, 1843 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:16:20,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 247 transitions, 2453 flow [2024-06-04 14:16:20,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 247 transitions, 2281 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:20,941 INFO L231 Difference]: Finished difference. Result has 313 places, 224 transitions, 1823 flow [2024-06-04 14:16:20,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1823, PETRI_PLACES=313, PETRI_TRANSITIONS=224} [2024-06-04 14:16:20,942 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2024-06-04 14:16:20,942 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 224 transitions, 1823 flow [2024-06-04 14:16:20,942 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) [2024-06-04 14:16:20,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:20,942 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] [2024-06-04 14:16:20,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 14:16:20,942 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)] === [2024-06-04 14:16:20,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:20,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1089872784, now seen corresponding path program 10 times [2024-06-04 14:16:20,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:20,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602982175] [2024-06-04 14:16:20,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:20,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602982175] [2024-06-04 14:16:25,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602982175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:25,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:25,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:16:25,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237414864] [2024-06-04 14:16:25,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:25,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:16:25,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:25,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:16:25,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:16:25,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:25,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 224 transitions, 1823 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) [2024-06-04 14:16:25,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:25,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:25,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:26,942 INFO L124 PetriNetUnfolderBase]: 713/1337 cut-off events. [2024-06-04 14:16:26,942 INFO L125 PetriNetUnfolderBase]: For 169684/169687 co-relation queries the response was YES. [2024-06-04 14:16:26,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6534 conditions, 1337 events. 713/1337 cut-off events. For 169684/169687 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7414 event pairs, 128 based on Foata normal form. 10/1341 useless extension candidates. Maximal degree in co-relation 6390. Up to 1026 conditions per place. [2024-06-04 14:16:26,956 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 185 selfloop transitions, 56 changer transitions 11/254 dead transitions. [2024-06-04 14:16:26,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 254 transitions, 2433 flow [2024-06-04 14:16:26,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:16:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:16:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 14:16:26,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-04 14:16:26,957 INFO L175 Difference]: Start difference. First operand has 313 places, 224 transitions, 1823 flow. Second operand 12 states and 139 transitions. [2024-06-04 14:16:26,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 254 transitions, 2433 flow [2024-06-04 14:16:27,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 254 transitions, 2291 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:27,494 INFO L231 Difference]: Finished difference. Result has 316 places, 221 transitions, 1778 flow [2024-06-04 14:16:27,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1778, PETRI_PLACES=316, PETRI_TRANSITIONS=221} [2024-06-04 14:16:27,494 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-04 14:16:27,494 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 221 transitions, 1778 flow [2024-06-04 14:16:27,494 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) [2024-06-04 14:16:27,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:27,494 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] [2024-06-04 14:16:27,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 14:16:27,495 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)] === [2024-06-04 14:16:27,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash -91875274, now seen corresponding path program 19 times [2024-06-04 14:16:27,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:27,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935668577] [2024-06-04 14:16:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:27,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:31,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:31,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935668577] [2024-06-04 14:16:31,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935668577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:31,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:31,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:16:31,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964826432] [2024-06-04 14:16:31,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:31,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:16:31,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:31,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:16:31,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:16:31,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:31,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 221 transitions, 1778 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) [2024-06-04 14:16:31,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:31,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:31,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:32,635 INFO L124 PetriNetUnfolderBase]: 691/1295 cut-off events. [2024-06-04 14:16:32,635 INFO L125 PetriNetUnfolderBase]: For 112520/112523 co-relation queries the response was YES. [2024-06-04 14:16:32,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6421 conditions, 1295 events. 691/1295 cut-off events. For 112520/112523 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7161 event pairs, 126 based on Foata normal form. 2/1291 useless extension candidates. Maximal degree in co-relation 6276. Up to 1050 conditions per place. [2024-06-04 14:16:32,648 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 189 selfloop transitions, 54 changer transitions 0/245 dead transitions. [2024-06-04 14:16:32,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 245 transitions, 2386 flow [2024-06-04 14:16:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:32,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:16:32,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-04 14:16:32,649 INFO L175 Difference]: Start difference. First operand has 316 places, 221 transitions, 1778 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:16:32,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 245 transitions, 2386 flow [2024-06-04 14:16:33,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 245 transitions, 2270 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:16:33,100 INFO L231 Difference]: Finished difference. Result has 313 places, 222 transitions, 1840 flow [2024-06-04 14:16:33,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1840, PETRI_PLACES=313, PETRI_TRANSITIONS=222} [2024-06-04 14:16:33,101 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2024-06-04 14:16:33,101 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 222 transitions, 1840 flow [2024-06-04 14:16:33,101 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) [2024-06-04 14:16:33,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:33,101 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] [2024-06-04 14:16:33,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 14:16:33,101 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)] === [2024-06-04 14:16:33,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:33,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1070536586, now seen corresponding path program 20 times [2024-06-04 14:16:33,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:33,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567733753] [2024-06-04 14:16:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:33,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:37,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:37,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567733753] [2024-06-04 14:16:37,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567733753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:37,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:37,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:16:37,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152325846] [2024-06-04 14:16:37,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:37,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:16:37,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:37,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:16:37,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:16:37,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:37,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 222 transitions, 1840 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) [2024-06-04 14:16:37,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:37,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:37,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:38,109 INFO L124 PetriNetUnfolderBase]: 695/1303 cut-off events. [2024-06-04 14:16:38,110 INFO L125 PetriNetUnfolderBase]: For 113035/113038 co-relation queries the response was YES. [2024-06-04 14:16:38,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6558 conditions, 1303 events. 695/1303 cut-off events. For 113035/113038 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7199 event pairs, 142 based on Foata normal form. 2/1299 useless extension candidates. Maximal degree in co-relation 6414. Up to 1108 conditions per place. [2024-06-04 14:16:38,123 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 203 selfloop transitions, 41 changer transitions 0/246 dead transitions. [2024-06-04 14:16:38,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 246 transitions, 2452 flow [2024-06-04 14:16:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:16:38,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:16:38,124 INFO L175 Difference]: Start difference. First operand has 313 places, 222 transitions, 1840 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:16:38,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 246 transitions, 2452 flow [2024-06-04 14:16:38,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 246 transitions, 2284 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:38,561 INFO L231 Difference]: Finished difference. Result has 315 places, 223 transitions, 1826 flow [2024-06-04 14:16:38,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1826, PETRI_PLACES=315, PETRI_TRANSITIONS=223} [2024-06-04 14:16:38,562 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-04 14:16:38,562 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 223 transitions, 1826 flow [2024-06-04 14:16:38,562 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) [2024-06-04 14:16:38,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:38,562 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] [2024-06-04 14:16:38,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 14:16:38,563 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)] === [2024-06-04 14:16:38,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:38,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1070321260, now seen corresponding path program 11 times [2024-06-04 14:16:38,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:38,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908997619] [2024-06-04 14:16:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:38,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:43,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:43,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:43,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908997619] [2024-06-04 14:16:43,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908997619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:43,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:43,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:16:43,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828142906] [2024-06-04 14:16:43,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:43,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:16:43,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:16:43,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:16:43,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:43,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 223 transitions, 1826 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) [2024-06-04 14:16:43,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:43,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:43,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:44,056 INFO L124 PetriNetUnfolderBase]: 711/1339 cut-off events. [2024-06-04 14:16:44,056 INFO L125 PetriNetUnfolderBase]: For 172768/172771 co-relation queries the response was YES. [2024-06-04 14:16:44,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6557 conditions, 1339 events. 711/1339 cut-off events. For 172768/172771 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7442 event pairs, 146 based on Foata normal form. 10/1343 useless extension candidates. Maximal degree in co-relation 6412. Up to 1100 conditions per place. [2024-06-04 14:16:44,069 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 199 selfloop transitions, 40 changer transitions 11/252 dead transitions. [2024-06-04 14:16:44,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 252 transitions, 2428 flow [2024-06-04 14:16:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:16:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:16:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 14:16:44,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-04 14:16:44,070 INFO L175 Difference]: Start difference. First operand has 315 places, 223 transitions, 1826 flow. Second operand 12 states and 136 transitions. [2024-06-04 14:16:44,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 252 transitions, 2428 flow [2024-06-04 14:16:44,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 252 transitions, 2284 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:44,470 INFO L231 Difference]: Finished difference. Result has 318 places, 220 transitions, 1747 flow [2024-06-04 14:16:44,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1747, PETRI_PLACES=318, PETRI_TRANSITIONS=220} [2024-06-04 14:16:44,471 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 286 predicate places. [2024-06-04 14:16:44,471 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 220 transitions, 1747 flow [2024-06-04 14:16:44,471 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) [2024-06-04 14:16:44,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:44,471 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] [2024-06-04 14:16:44,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 14:16:44,471 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)] === [2024-06-04 14:16:44,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:44,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1264268606, now seen corresponding path program 21 times [2024-06-04 14:16:44,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:44,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104784919] [2024-06-04 14:16:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:44,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:48,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:48,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104784919] [2024-06-04 14:16:48,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104784919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:48,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:48,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:16:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006382142] [2024-06-04 14:16:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:48,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:16:48,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:48,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:16:48,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:16:48,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:48,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 220 transitions, 1747 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) [2024-06-04 14:16:48,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:48,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:48,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:49,473 INFO L124 PetriNetUnfolderBase]: 689/1297 cut-off events. [2024-06-04 14:16:49,473 INFO L125 PetriNetUnfolderBase]: For 114743/114746 co-relation queries the response was YES. [2024-06-04 14:16:49,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6400 conditions, 1297 events. 689/1297 cut-off events. For 114743/114746 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7217 event pairs, 144 based on Foata normal form. 2/1293 useless extension candidates. Maximal degree in co-relation 6254. Up to 1124 conditions per place. [2024-06-04 14:16:49,489 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 204 selfloop transitions, 37 changer transitions 0/243 dead transitions. [2024-06-04 14:16:49,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 243 transitions, 2351 flow [2024-06-04 14:16:49,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:16:49,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:16:49,491 INFO L175 Difference]: Start difference. First operand has 318 places, 220 transitions, 1747 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:16:49,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 243 transitions, 2351 flow [2024-06-04 14:16:49,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 243 transitions, 2267 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:16:49,908 INFO L231 Difference]: Finished difference. Result has 315 places, 221 transitions, 1811 flow [2024-06-04 14:16:49,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1811, PETRI_PLACES=315, PETRI_TRANSITIONS=221} [2024-06-04 14:16:49,908 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-04 14:16:49,908 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 221 transitions, 1811 flow [2024-06-04 14:16:49,908 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) [2024-06-04 14:16:49,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:49,909 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] [2024-06-04 14:16:49,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 14:16:49,909 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)] === [2024-06-04 14:16:49,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:49,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1269838376, now seen corresponding path program 22 times [2024-06-04 14:16:49,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:49,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568066865] [2024-06-04 14:16:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:49,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:53,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:53,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568066865] [2024-06-04 14:16:53,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568066865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:53,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:53,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:16:53,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225054005] [2024-06-04 14:16:53,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:53,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:16:53,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:53,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:16:53,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:16:54,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:54,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 221 transitions, 1811 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) [2024-06-04 14:16:54,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:54,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:54,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:54,790 INFO L124 PetriNetUnfolderBase]: 693/1305 cut-off events. [2024-06-04 14:16:54,790 INFO L125 PetriNetUnfolderBase]: For 115328/115331 co-relation queries the response was YES. [2024-06-04 14:16:54,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6541 conditions, 1305 events. 693/1305 cut-off events. For 115328/115331 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7275 event pairs, 146 based on Foata normal form. 2/1301 useless extension candidates. Maximal degree in co-relation 6396. Up to 1132 conditions per place. [2024-06-04 14:16:54,803 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 206 selfloop transitions, 36 changer transitions 0/244 dead transitions. [2024-06-04 14:16:54,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 244 transitions, 2419 flow [2024-06-04 14:16:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:16:54,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:16:54,804 INFO L175 Difference]: Start difference. First operand has 315 places, 221 transitions, 1811 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:16:54,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 244 transitions, 2419 flow [2024-06-04 14:16:55,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 244 transitions, 2281 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:55,183 INFO L231 Difference]: Finished difference. Result has 317 places, 222 transitions, 1821 flow [2024-06-04 14:16:55,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1821, PETRI_PLACES=317, PETRI_TRANSITIONS=222} [2024-06-04 14:16:55,183 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-04 14:16:55,183 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 222 transitions, 1821 flow [2024-06-04 14:16:55,184 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) [2024-06-04 14:16:55,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:55,184 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] [2024-06-04 14:16:55,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 14:16:55,184 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)] === [2024-06-04 14:16:55,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:55,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2010671912, now seen corresponding path program 23 times [2024-06-04 14:16:55,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:55,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384399044] [2024-06-04 14:16:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:55,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:59,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384399044] [2024-06-04 14:16:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384399044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:59,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:59,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:59,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691170898] [2024-06-04 14:16:59,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:59,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:59,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:59,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:59,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:59,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:59,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 222 transitions, 1821 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) [2024-06-04 14:16:59,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:59,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:59,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:00,247 INFO L124 PetriNetUnfolderBase]: 697/1313 cut-off events. [2024-06-04 14:17:00,247 INFO L125 PetriNetUnfolderBase]: For 117336/117339 co-relation queries the response was YES. [2024-06-04 14:17:00,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6588 conditions, 1313 events. 697/1313 cut-off events. For 117336/117339 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7334 event pairs, 124 based on Foata normal form. 2/1309 useless extension candidates. Maximal degree in co-relation 6442. Up to 1068 conditions per place. [2024-06-04 14:17:00,260 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 53 changer transitions 0/246 dead transitions. [2024-06-04 14:17:00,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 246 transitions, 2439 flow [2024-06-04 14:17:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:00,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:17:00,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:17:00,261 INFO L175 Difference]: Start difference. First operand has 317 places, 222 transitions, 1821 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:17:00,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 246 transitions, 2439 flow [2024-06-04 14:17:00,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 246 transitions, 2301 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:00,693 INFO L231 Difference]: Finished difference. Result has 319 places, 223 transitions, 1867 flow [2024-06-04 14:17:00,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1867, PETRI_PLACES=319, PETRI_TRANSITIONS=223} [2024-06-04 14:17:00,694 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:17:00,694 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 223 transitions, 1867 flow [2024-06-04 14:17:00,694 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) [2024-06-04 14:17:00,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:00,694 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] [2024-06-04 14:17:00,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 14:17:00,694 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)] === [2024-06-04 14:17:00,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:00,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1269982526, now seen corresponding path program 24 times [2024-06-04 14:17:00,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:00,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752553794] [2024-06-04 14:17:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:00,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:05,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:05,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752553794] [2024-06-04 14:17:05,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752553794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:05,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:05,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:05,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152326731] [2024-06-04 14:17:05,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:05,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:05,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:05,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:05,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:05,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:05,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 223 transitions, 1867 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) [2024-06-04 14:17:05,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:05,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:05,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:06,304 INFO L124 PetriNetUnfolderBase]: 701/1321 cut-off events. [2024-06-04 14:17:06,304 INFO L125 PetriNetUnfolderBase]: For 119738/119741 co-relation queries the response was YES. [2024-06-04 14:17:06,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6691 conditions, 1321 events. 701/1321 cut-off events. For 119738/119741 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7398 event pairs, 148 based on Foata normal form. 2/1317 useless extension candidates. Maximal degree in co-relation 6544. Up to 1148 conditions per place. [2024-06-04 14:17:06,319 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 209 selfloop transitions, 35 changer transitions 0/246 dead transitions. [2024-06-04 14:17:06,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 246 transitions, 2483 flow [2024-06-04 14:17:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:06,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:06,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:17:06,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:17:06,320 INFO L175 Difference]: Start difference. First operand has 319 places, 223 transitions, 1867 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:17:06,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 246 transitions, 2483 flow [2024-06-04 14:17:06,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 246 transitions, 2309 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:06,760 INFO L231 Difference]: Finished difference. Result has 321 places, 224 transitions, 1843 flow [2024-06-04 14:17:06,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1843, PETRI_PLACES=321, PETRI_TRANSITIONS=224} [2024-06-04 14:17:06,760 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-04 14:17:06,760 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 224 transitions, 1843 flow [2024-06-04 14:17:06,760 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) [2024-06-04 14:17:06,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:06,761 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] [2024-06-04 14:17:06,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 14:17:06,761 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)] === [2024-06-04 14:17:06,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:06,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1264260670, now seen corresponding path program 12 times [2024-06-04 14:17:06,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:06,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769511450] [2024-06-04 14:17:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:06,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:11,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769511450] [2024-06-04 14:17:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769511450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:11,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:11,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:11,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163310612] [2024-06-04 14:17:11,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:11,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:11,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:11,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:11,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:11,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:11,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 224 transitions, 1843 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) [2024-06-04 14:17:11,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:11,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:11,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:12,531 INFO L124 PetriNetUnfolderBase]: 717/1357 cut-off events. [2024-06-04 14:17:12,531 INFO L125 PetriNetUnfolderBase]: For 182082/182085 co-relation queries the response was YES. [2024-06-04 14:17:12,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6660 conditions, 1357 events. 717/1357 cut-off events. For 182082/182085 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7618 event pairs, 146 based on Foata normal form. 10/1361 useless extension candidates. Maximal degree in co-relation 6512. Up to 1140 conditions per place. [2024-06-04 14:17:12,545 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 204 selfloop transitions, 35 changer transitions 11/252 dead transitions. [2024-06-04 14:17:12,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 252 transitions, 2441 flow [2024-06-04 14:17:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:17:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:17:12,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 14:17:12,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-06-04 14:17:12,546 INFO L175 Difference]: Start difference. First operand has 321 places, 224 transitions, 1843 flow. Second operand 12 states and 134 transitions. [2024-06-04 14:17:12,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 252 transitions, 2441 flow [2024-06-04 14:17:13,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 252 transitions, 2301 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:13,031 INFO L231 Difference]: Finished difference. Result has 324 places, 221 transitions, 1758 flow [2024-06-04 14:17:13,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1758, PETRI_PLACES=324, PETRI_TRANSITIONS=221} [2024-06-04 14:17:13,031 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-04 14:17:13,031 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 221 transitions, 1758 flow [2024-06-04 14:17:13,031 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) [2024-06-04 14:17:13,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:13,032 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] [2024-06-04 14:17:13,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 14:17:13,032 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)] === [2024-06-04 14:17:13,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:13,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2028326466, now seen corresponding path program 25 times [2024-06-04 14:17:13,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:13,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694541513] [2024-06-04 14:17:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:13,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:16,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:16,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694541513] [2024-06-04 14:17:16,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694541513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:16,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:16,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:17:16,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941341106] [2024-06-04 14:17:16,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:16,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:17:16,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:16,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:17:16,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:17:17,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:17,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 221 transitions, 1758 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) [2024-06-04 14:17:17,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:17,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:17,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:17,683 INFO L124 PetriNetUnfolderBase]: 695/1315 cut-off events. [2024-06-04 14:17:17,683 INFO L125 PetriNetUnfolderBase]: For 121360/121363 co-relation queries the response was YES. [2024-06-04 14:17:17,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6505 conditions, 1315 events. 695/1315 cut-off events. For 121360/121363 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7377 event pairs, 152 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 6356. Up to 1156 conditions per place. [2024-06-04 14:17:17,697 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 206 selfloop transitions, 34 changer transitions 0/242 dead transitions. [2024-06-04 14:17:17,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 242 transitions, 2362 flow [2024-06-04 14:17:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:17:17,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:17:17,698 INFO L175 Difference]: Start difference. First operand has 324 places, 221 transitions, 1758 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:17:17,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 242 transitions, 2362 flow [2024-06-04 14:17:18,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 242 transitions, 2288 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:17:18,103 INFO L231 Difference]: Finished difference. Result has 321 places, 222 transitions, 1834 flow [2024-06-04 14:17:18,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1834, PETRI_PLACES=321, PETRI_TRANSITIONS=222} [2024-06-04 14:17:18,103 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-04 14:17:18,103 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 222 transitions, 1834 flow [2024-06-04 14:17:18,103 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) [2024-06-04 14:17:18,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:18,103 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] [2024-06-04 14:17:18,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 14:17:18,104 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)] === [2024-06-04 14:17:18,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2010456586, now seen corresponding path program 13 times [2024-06-04 14:17:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:18,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832204761] [2024-06-04 14:17:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:18,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:23,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:23,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832204761] [2024-06-04 14:17:23,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832204761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:23,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:23,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:17:23,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260530979] [2024-06-04 14:17:23,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:23,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:17:23,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:23,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:17:23,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:17:23,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:23,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 222 transitions, 1834 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) [2024-06-04 14:17:23,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:23,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:23,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:24,551 INFO L124 PetriNetUnfolderBase]: 711/1351 cut-off events. [2024-06-04 14:17:24,551 INFO L125 PetriNetUnfolderBase]: For 182524/182527 co-relation queries the response was YES. [2024-06-04 14:17:24,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6636 conditions, 1351 events. 711/1351 cut-off events. For 182524/182527 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7616 event pairs, 128 based on Foata normal form. 10/1355 useless extension candidates. Maximal degree in co-relation 6488. Up to 1062 conditions per place. [2024-06-04 14:17:24,565 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 186 selfloop transitions, 52 changer transitions 11/251 dead transitions. [2024-06-04 14:17:24,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 251 transitions, 2434 flow [2024-06-04 14:17:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:17:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:17:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 14:17:24,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34595959595959597 [2024-06-04 14:17:24,566 INFO L175 Difference]: Start difference. First operand has 321 places, 222 transitions, 1834 flow. Second operand 12 states and 137 transitions. [2024-06-04 14:17:24,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 251 transitions, 2434 flow [2024-06-04 14:17:25,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 251 transitions, 2294 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:25,005 INFO L231 Difference]: Finished difference. Result has 324 places, 219 transitions, 1783 flow [2024-06-04 14:17:25,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1783, PETRI_PLACES=324, PETRI_TRANSITIONS=219} [2024-06-04 14:17:25,005 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-04 14:17:25,005 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 219 transitions, 1783 flow [2024-06-04 14:17:25,005 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) [2024-06-04 14:17:25,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:25,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:25,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 14:17:25,006 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)] === [2024-06-04 14:17:25,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2084999174, now seen corresponding path program 26 times [2024-06-04 14:17:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:25,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8323069] [2024-06-04 14:17:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:29,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:29,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8323069] [2024-06-04 14:17:29,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8323069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:29,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:29,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:17:29,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027443574] [2024-06-04 14:17:29,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:29,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:17:29,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:29,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:17:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:17:29,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:29,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 219 transitions, 1783 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) [2024-06-04 14:17:29,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:29,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:29,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:29,754 INFO L124 PetriNetUnfolderBase]: 689/1309 cut-off events. [2024-06-04 14:17:29,755 INFO L125 PetriNetUnfolderBase]: For 121496/121499 co-relation queries the response was YES. [2024-06-04 14:17:29,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6537 conditions, 1309 events. 689/1309 cut-off events. For 121496/121499 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7375 event pairs, 128 based on Foata normal form. 2/1305 useless extension candidates. Maximal degree in co-relation 6388. Up to 1078 conditions per place. [2024-06-04 14:17:29,769 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 188 selfloop transitions, 51 changer transitions 0/241 dead transitions. [2024-06-04 14:17:29,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 241 transitions, 2391 flow [2024-06-04 14:17:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:29,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:17:29,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:17:29,770 INFO L175 Difference]: Start difference. First operand has 324 places, 219 transitions, 1783 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:17:29,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 241 transitions, 2391 flow [2024-06-04 14:17:30,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 241 transitions, 2283 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:17:30,227 INFO L231 Difference]: Finished difference. Result has 321 places, 220 transitions, 1861 flow [2024-06-04 14:17:30,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1861, PETRI_PLACES=321, PETRI_TRANSITIONS=220} [2024-06-04 14:17:30,227 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-04 14:17:30,227 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 220 transitions, 1861 flow [2024-06-04 14:17:30,228 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) [2024-06-04 14:17:30,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:30,228 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] [2024-06-04 14:17:30,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 14:17:30,228 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)] === [2024-06-04 14:17:30,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:30,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2028320886, now seen corresponding path program 27 times [2024-06-04 14:17:30,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:30,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62698882] [2024-06-04 14:17:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:30,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:34,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:34,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62698882] [2024-06-04 14:17:34,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62698882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:34,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:34,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:34,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784945614] [2024-06-04 14:17:34,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:34,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:34,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:34,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:34,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:34,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:34,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 220 transitions, 1861 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) [2024-06-04 14:17:34,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:34,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:34,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:34,960 INFO L124 PetriNetUnfolderBase]: 693/1317 cut-off events. [2024-06-04 14:17:34,960 INFO L125 PetriNetUnfolderBase]: For 122776/122779 co-relation queries the response was YES. [2024-06-04 14:17:34,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6704 conditions, 1317 events. 693/1317 cut-off events. For 122776/122779 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7419 event pairs, 152 based on Foata normal form. 2/1313 useless extension candidates. Maximal degree in co-relation 6556. Up to 1158 conditions per place. [2024-06-04 14:17:34,973 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 206 selfloop transitions, 33 changer transitions 0/241 dead transitions. [2024-06-04 14:17:34,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 241 transitions, 2467 flow [2024-06-04 14:17:34,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:34,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:34,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:17:34,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:17:34,974 INFO L175 Difference]: Start difference. First operand has 321 places, 220 transitions, 1861 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:17:34,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 241 transitions, 2467 flow [2024-06-04 14:17:35,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 241 transitions, 2291 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:35,403 INFO L231 Difference]: Finished difference. Result has 323 places, 221 transitions, 1837 flow [2024-06-04 14:17:35,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1837, PETRI_PLACES=323, PETRI_TRANSITIONS=221} [2024-06-04 14:17:35,403 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-04 14:17:35,404 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 221 transitions, 1837 flow [2024-06-04 14:17:35,404 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) [2024-06-04 14:17:35,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:35,404 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] [2024-06-04 14:17:35,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 14:17:35,404 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)] === [2024-06-04 14:17:35,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash -596406968, now seen corresponding path program 28 times [2024-06-04 14:17:35,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:35,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502139725] [2024-06-04 14:17:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:35,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:39,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:39,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502139725] [2024-06-04 14:17:39,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502139725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:39,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:17:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636078186] [2024-06-04 14:17:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:39,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:17:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:39,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:17:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:17:39,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:39,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 221 transitions, 1837 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) [2024-06-04 14:17:39,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:39,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:39,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:40,538 INFO L124 PetriNetUnfolderBase]: 697/1325 cut-off events. [2024-06-04 14:17:40,539 INFO L125 PetriNetUnfolderBase]: For 124840/124843 co-relation queries the response was YES. [2024-06-04 14:17:40,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6699 conditions, 1325 events. 697/1325 cut-off events. For 124840/124843 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7496 event pairs, 130 based on Foata normal form. 2/1321 useless extension candidates. Maximal degree in co-relation 6550. Up to 1094 conditions per place. [2024-06-04 14:17:40,552 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 50 changer transitions 0/243 dead transitions. [2024-06-04 14:17:40,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 243 transitions, 2453 flow [2024-06-04 14:17:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:17:40,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:17:40,553 INFO L175 Difference]: Start difference. First operand has 323 places, 221 transitions, 1837 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:17:40,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 243 transitions, 2453 flow [2024-06-04 14:17:40,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 243 transitions, 2311 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:40,985 INFO L231 Difference]: Finished difference. Result has 325 places, 222 transitions, 1883 flow [2024-06-04 14:17:40,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1883, PETRI_PLACES=325, PETRI_TRANSITIONS=222} [2024-06-04 14:17:40,985 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-04 14:17:40,986 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 222 transitions, 1883 flow [2024-06-04 14:17:40,986 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) [2024-06-04 14:17:40,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:40,986 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] [2024-06-04 14:17:40,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 14:17:40,986 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)] === [2024-06-04 14:17:40,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:40,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2090571300, now seen corresponding path program 14 times [2024-06-04 14:17:40,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:40,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001980332] [2024-06-04 14:17:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:40,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:45,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:45,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001980332] [2024-06-04 14:17:45,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001980332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:45,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:45,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:17:45,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751741279] [2024-06-04 14:17:45,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:45,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:17:45,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:45,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:17:45,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:17:45,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:45,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 222 transitions, 1883 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) [2024-06-04 14:17:45,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:45,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:45,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:46,810 INFO L124 PetriNetUnfolderBase]: 713/1361 cut-off events. [2024-06-04 14:17:46,810 INFO L125 PetriNetUnfolderBase]: For 188731/188734 co-relation queries the response was YES. [2024-06-04 14:17:46,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6758 conditions, 1361 events. 713/1361 cut-off events. For 188731/188734 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7712 event pairs, 136 based on Foata normal form. 10/1365 useless extension candidates. Maximal degree in co-relation 6608. Up to 1086 conditions per place. [2024-06-04 14:17:46,825 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 187 selfloop transitions, 49 changer transitions 11/249 dead transitions. [2024-06-04 14:17:46,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 249 transitions, 2473 flow [2024-06-04 14:17:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:17:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:17:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 14:17:46,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-04 14:17:46,826 INFO L175 Difference]: Start difference. First operand has 325 places, 222 transitions, 1883 flow. Second operand 12 states and 133 transitions. [2024-06-04 14:17:46,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 249 transitions, 2473 flow [2024-06-04 14:17:47,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 249 transitions, 2295 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:47,327 INFO L231 Difference]: Finished difference. Result has 328 places, 219 transitions, 1788 flow [2024-06-04 14:17:47,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1788, PETRI_PLACES=328, PETRI_TRANSITIONS=219} [2024-06-04 14:17:47,328 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2024-06-04 14:17:47,328 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 219 transitions, 1788 flow [2024-06-04 14:17:47,328 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) [2024-06-04 14:17:47,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:47,328 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] [2024-06-04 14:17:47,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 14:17:47,328 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)] === [2024-06-04 14:17:47,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2028176736, now seen corresponding path program 29 times [2024-06-04 14:17:47,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:47,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606044413] [2024-06-04 14:17:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:47,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:51,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:51,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606044413] [2024-06-04 14:17:51,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606044413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:51,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:51,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:17:51,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578059855] [2024-06-04 14:17:51,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:51,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:17:51,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:17:51,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:17:51,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:51,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 219 transitions, 1788 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) [2024-06-04 14:17:51,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:51,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:51,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:52,186 INFO L124 PetriNetUnfolderBase]: 691/1319 cut-off events. [2024-06-04 14:17:52,186 INFO L125 PetriNetUnfolderBase]: For 125842/125845 co-relation queries the response was YES. [2024-06-04 14:17:52,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6601 conditions, 1319 events. 691/1319 cut-off events. For 125842/125845 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7464 event pairs, 146 based on Foata normal form. 2/1315 useless extension candidates. Maximal degree in co-relation 6450. Up to 1160 conditions per place. [2024-06-04 14:17:52,200 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 206 selfloop transitions, 32 changer transitions 0/240 dead transitions. [2024-06-04 14:17:52,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 240 transitions, 2396 flow [2024-06-04 14:17:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:17:52,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:17:52,201 INFO L175 Difference]: Start difference. First operand has 328 places, 219 transitions, 1788 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:17:52,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 240 transitions, 2396 flow [2024-06-04 14:17:52,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 240 transitions, 2294 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:17:52,693 INFO L231 Difference]: Finished difference. Result has 325 places, 220 transitions, 1840 flow [2024-06-04 14:17:52,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1840, PETRI_PLACES=325, PETRI_TRANSITIONS=220} [2024-06-04 14:17:52,693 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-04 14:17:52,693 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 220 transitions, 1840 flow [2024-06-04 14:17:52,693 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) [2024-06-04 14:17:52,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:52,693 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] [2024-06-04 14:17:52,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 14:17:52,693 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)] === [2024-06-04 14:17:52,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:52,694 INFO L85 PathProgramCache]: Analyzing trace with hash -790752684, now seen corresponding path program 30 times [2024-06-04 14:17:52,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:52,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055075004] [2024-06-04 14:17:52,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:52,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:56,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:56,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055075004] [2024-06-04 14:17:56,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055075004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:56,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:56,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:56,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327606324] [2024-06-04 14:17:56,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:56,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:56,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:56,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:56,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:56,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:56,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 220 transitions, 1840 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) [2024-06-04 14:17:56,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:56,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:56,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:57,115 INFO L124 PetriNetUnfolderBase]: 695/1327 cut-off events. [2024-06-04 14:17:57,115 INFO L125 PetriNetUnfolderBase]: For 127574/127577 co-relation queries the response was YES. [2024-06-04 14:17:57,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6734 conditions, 1327 events. 695/1327 cut-off events. For 127574/127577 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7551 event pairs, 152 based on Foata normal form. 2/1323 useless extension candidates. Maximal degree in co-relation 6584. Up to 1168 conditions per place. [2024-06-04 14:17:57,130 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 208 selfloop transitions, 31 changer transitions 0/241 dead transitions. [2024-06-04 14:17:57,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 241 transitions, 2452 flow [2024-06-04 14:17:57,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:17:57,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:17:57,131 INFO L175 Difference]: Start difference. First operand has 325 places, 220 transitions, 1840 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:17:57,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 241 transitions, 2452 flow [2024-06-04 14:17:57,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 241 transitions, 2308 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:57,619 INFO L231 Difference]: Finished difference. Result has 327 places, 221 transitions, 1850 flow [2024-06-04 14:17:57,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1850, PETRI_PLACES=327, PETRI_TRANSITIONS=221} [2024-06-04 14:17:57,619 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-04 14:17:57,619 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 221 transitions, 1850 flow [2024-06-04 14:17:57,619 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) [2024-06-04 14:17:57,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:57,619 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] [2024-06-04 14:17:57,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 14:17:57,620 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)] === [2024-06-04 14:17:57,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:57,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2084849444, now seen corresponding path program 31 times [2024-06-04 14:17:57,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:57,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073957412] [2024-06-04 14:17:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:57,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:01,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073957412] [2024-06-04 14:18:01,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073957412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:01,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:01,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:01,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361554316] [2024-06-04 14:18:01,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:01,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:01,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:01,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:01,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:01,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:01,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 221 transitions, 1850 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) [2024-06-04 14:18:01,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:01,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:01,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:02,611 INFO L124 PetriNetUnfolderBase]: 699/1335 cut-off events. [2024-06-04 14:18:02,611 INFO L125 PetriNetUnfolderBase]: For 130128/130131 co-relation queries the response was YES. [2024-06-04 14:18:02,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 1335 events. 699/1335 cut-off events. For 130128/130131 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7605 event pairs, 132 based on Foata normal form. 2/1331 useless extension candidates. Maximal degree in co-relation 6632. Up to 1104 conditions per place. [2024-06-04 14:18:02,625 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 192 selfloop transitions, 49 changer transitions 0/243 dead transitions. [2024-06-04 14:18:02,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 243 transitions, 2472 flow [2024-06-04 14:18:02,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:18:02,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-04 14:18:02,626 INFO L175 Difference]: Start difference. First operand has 327 places, 221 transitions, 1850 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:18:02,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 243 transitions, 2472 flow [2024-06-04 14:18:03,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 243 transitions, 2328 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-04 14:18:03,047 INFO L231 Difference]: Finished difference. Result has 329 places, 222 transitions, 1898 flow [2024-06-04 14:18:03,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1898, PETRI_PLACES=329, PETRI_TRANSITIONS=222} [2024-06-04 14:18:03,048 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-04 14:18:03,048 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 222 transitions, 1898 flow [2024-06-04 14:18:03,048 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) [2024-06-04 14:18:03,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:03,048 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] [2024-06-04 14:18:03,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 14:18:03,048 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)] === [2024-06-04 14:18:03,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash -642927758, now seen corresponding path program 15 times [2024-06-04 14:18:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:03,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169871036] [2024-06-04 14:18:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:03,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:07,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:07,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169871036] [2024-06-04 14:18:07,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169871036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:07,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:07,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:07,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121105840] [2024-06-04 14:18:07,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:07,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:07,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:07,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:07,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 222 transitions, 1898 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) [2024-06-04 14:18:07,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:07,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:07,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:08,001 INFO L124 PetriNetUnfolderBase]: 715/1371 cut-off events. [2024-06-04 14:18:08,001 INFO L125 PetriNetUnfolderBase]: For 195598/195601 co-relation queries the response was YES. [2024-06-04 14:18:08,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6832 conditions, 1371 events. 715/1371 cut-off events. For 195598/195601 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7854 event pairs, 162 based on Foata normal form. 10/1375 useless extension candidates. Maximal degree in co-relation 6680. Up to 1158 conditions per place. [2024-06-04 14:18:08,013 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 200 selfloop transitions, 30 changer transitions 16/248 dead transitions. [2024-06-04 14:18:08,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 248 transitions, 2482 flow [2024-06-04 14:18:08,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:18:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:18:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 14:18:08,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33080808080808083 [2024-06-04 14:18:08,014 INFO L175 Difference]: Start difference. First operand has 329 places, 222 transitions, 1898 flow. Second operand 12 states and 131 transitions. [2024-06-04 14:18:08,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 248 transitions, 2482 flow [2024-06-04 14:18:08,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 248 transitions, 2300 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-04 14:18:08,516 INFO L231 Difference]: Finished difference. Result has 332 places, 216 transitions, 1743 flow [2024-06-04 14:18:08,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1743, PETRI_PLACES=332, PETRI_TRANSITIONS=216} [2024-06-04 14:18:08,516 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 300 predicate places. [2024-06-04 14:18:08,516 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 216 transitions, 1743 flow [2024-06-04 14:18:08,516 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) [2024-06-04 14:18:08,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:08,517 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] [2024-06-04 14:18:08,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 14:18:08,517 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)] === [2024-06-04 14:18:08,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:08,517 INFO L85 PathProgramCache]: Analyzing trace with hash 432977862, now seen corresponding path program 16 times [2024-06-04 14:18:08,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:08,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900991565] [2024-06-04 14:18:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:08,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:12,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:12,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900991565] [2024-06-04 14:18:12,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900991565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:12,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:12,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:12,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724875602] [2024-06-04 14:18:12,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:12,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:12,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:12,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:12,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:12,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:12,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 216 transitions, 1743 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) [2024-06-04 14:18:12,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:12,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:12,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:13,587 INFO L124 PetriNetUnfolderBase]: 727/1402 cut-off events. [2024-06-04 14:18:13,587 INFO L125 PetriNetUnfolderBase]: For 283889/283889 co-relation queries the response was YES. [2024-06-04 14:18:13,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8566 conditions, 1402 events. 727/1402 cut-off events. For 283889/283889 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7991 event pairs, 188 based on Foata normal form. 8/1408 useless extension candidates. Maximal degree in co-relation 8413. Up to 1207 conditions per place. [2024-06-04 14:18:13,603 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 209 selfloop transitions, 24 changer transitions 8/243 dead transitions. [2024-06-04 14:18:13,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 243 transitions, 2701 flow [2024-06-04 14:18:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:18:13,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:18:13,604 INFO L175 Difference]: Start difference. First operand has 332 places, 216 transitions, 1743 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:18:13,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 243 transitions, 2701 flow [2024-06-04 14:18:14,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 243 transitions, 2621 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-04 14:18:14,263 INFO L231 Difference]: Finished difference. Result has 326 places, 215 transitions, 1806 flow [2024-06-04 14:18:14,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1806, PETRI_PLACES=326, PETRI_TRANSITIONS=215} [2024-06-04 14:18:14,263 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-04 14:18:14,263 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 215 transitions, 1806 flow [2024-06-04 14:18:14,264 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) [2024-06-04 14:18:14,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:14,264 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] [2024-06-04 14:18:14,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 14:18:14,264 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)] === [2024-06-04 14:18:14,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1630809474, now seen corresponding path program 32 times [2024-06-04 14:18:14,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:14,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117802571] [2024-06-04 14:18:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:14,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:18,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:18,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117802571] [2024-06-04 14:18:18,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117802571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:18,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:18,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:18:18,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285581844] [2024-06-04 14:18:18,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:18,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:18:18,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:18,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:18:18,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:18:19,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:19,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 215 transitions, 1806 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) [2024-06-04 14:18:19,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:19,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:19,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:19,830 INFO L124 PetriNetUnfolderBase]: 707/1363 cut-off events. [2024-06-04 14:18:19,830 INFO L125 PetriNetUnfolderBase]: For 227232/227235 co-relation queries the response was YES. [2024-06-04 14:18:19,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8495 conditions, 1363 events. 707/1363 cut-off events. For 227232/227235 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7766 event pairs, 144 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 8344. Up to 1012 conditions per place. [2024-06-04 14:18:19,845 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 162 selfloop transitions, 76 changer transitions 0/240 dead transitions. [2024-06-04 14:18:19,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 240 transitions, 2434 flow [2024-06-04 14:18:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 14:18:19,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-04 14:18:19,846 INFO L175 Difference]: Start difference. First operand has 326 places, 215 transitions, 1806 flow. Second operand 11 states and 128 transitions. [2024-06-04 14:18:19,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 240 transitions, 2434 flow [2024-06-04 14:18:20,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 240 transitions, 2382 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:18:20,457 INFO L231 Difference]: Finished difference. Result has 325 places, 216 transitions, 2002 flow [2024-06-04 14:18:20,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2002, PETRI_PLACES=325, PETRI_TRANSITIONS=216} [2024-06-04 14:18:20,458 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-04 14:18:20,458 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 216 transitions, 2002 flow [2024-06-04 14:18:20,458 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) [2024-06-04 14:18:20,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:20,458 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] [2024-06-04 14:18:20,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 14:18:20,458 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)] === [2024-06-04 14:18:20,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:20,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1160160288, now seen corresponding path program 17 times [2024-06-04 14:18:20,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:20,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205568] [2024-06-04 14:18:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:20,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:26,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:26,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205568] [2024-06-04 14:18:26,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:26,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:26,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:26,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331096972] [2024-06-04 14:18:26,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:26,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:26,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:26,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:26,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:26,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:26,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 216 transitions, 2002 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) [2024-06-04 14:18:26,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:26,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:26,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:27,509 INFO L124 PetriNetUnfolderBase]: 723/1399 cut-off events. [2024-06-04 14:18:27,509 INFO L125 PetriNetUnfolderBase]: For 287702/287705 co-relation queries the response was YES. [2024-06-04 14:18:27,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8772 conditions, 1399 events. 723/1399 cut-off events. For 287702/287705 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8008 event pairs, 142 based on Foata normal form. 10/1403 useless extension candidates. Maximal degree in co-relation 8622. Up to 1004 conditions per place. [2024-06-04 14:18:27,524 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 159 selfloop transitions, 74 changer transitions 11/246 dead transitions. [2024-06-04 14:18:27,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 246 transitions, 2596 flow [2024-06-04 14:18:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:18:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:18:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 14:18:27,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:18:27,526 INFO L175 Difference]: Start difference. First operand has 325 places, 216 transitions, 2002 flow. Second operand 12 states and 140 transitions. [2024-06-04 14:18:27,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 246 transitions, 2596 flow [2024-06-04 14:18:28,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 246 transitions, 2358 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-04 14:18:28,270 INFO L231 Difference]: Finished difference. Result has 328 places, 213 transitions, 1897 flow [2024-06-04 14:18:28,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1897, PETRI_PLACES=328, PETRI_TRANSITIONS=213} [2024-06-04 14:18:28,271 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2024-06-04 14:18:28,271 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 213 transitions, 1897 flow [2024-06-04 14:18:28,271 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) [2024-06-04 14:18:28,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:28,271 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] [2024-06-04 14:18:28,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 14:18:28,271 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)] === [2024-06-04 14:18:28,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:28,271 INFO L85 PathProgramCache]: Analyzing trace with hash -326812094, now seen corresponding path program 33 times [2024-06-04 14:18:28,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:28,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280455447] [2024-06-04 14:18:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:32,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:32,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280455447] [2024-06-04 14:18:32,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280455447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:32,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:32,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:32,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813998331] [2024-06-04 14:18:32,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:32,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:32,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:32,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:32,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:32,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:32,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 213 transitions, 1897 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) [2024-06-04 14:18:32,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:32,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:32,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:33,276 INFO L124 PetriNetUnfolderBase]: 701/1357 cut-off events. [2024-06-04 14:18:33,277 INFO L125 PetriNetUnfolderBase]: For 227131/227134 co-relation queries the response was YES. [2024-06-04 14:18:33,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8623 conditions, 1357 events. 701/1357 cut-off events. For 227131/227134 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7746 event pairs, 146 based on Foata normal form. 2/1353 useless extension candidates. Maximal degree in co-relation 8472. Up to 1020 conditions per place. [2024-06-04 14:18:33,291 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 160 selfloop transitions, 74 changer transitions 0/236 dead transitions. [2024-06-04 14:18:33,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 236 transitions, 2513 flow [2024-06-04 14:18:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:18:33,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:18:33,292 INFO L175 Difference]: Start difference. First operand has 328 places, 213 transitions, 1897 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:18:33,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 236 transitions, 2513 flow [2024-06-04 14:18:33,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 236 transitions, 2361 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:18:33,920 INFO L231 Difference]: Finished difference. Result has 325 places, 214 transitions, 1991 flow [2024-06-04 14:18:33,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1991, PETRI_PLACES=325, PETRI_TRANSITIONS=214} [2024-06-04 14:18:33,920 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-04 14:18:33,920 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 214 transitions, 1991 flow [2024-06-04 14:18:33,920 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) [2024-06-04 14:18:33,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:33,921 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] [2024-06-04 14:18:33,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 14:18:33,921 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)] === [2024-06-04 14:18:33,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:33,921 INFO L85 PathProgramCache]: Analyzing trace with hash 432968562, now seen corresponding path program 18 times [2024-06-04 14:18:33,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:33,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95447169] [2024-06-04 14:18:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:33,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:37,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:37,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95447169] [2024-06-04 14:18:37,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95447169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:37,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:37,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:37,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092791464] [2024-06-04 14:18:37,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:37,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:37,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:37,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:38,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:38,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 214 transitions, 1991 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) [2024-06-04 14:18:38,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:38,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:38,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:38,954 INFO L124 PetriNetUnfolderBase]: 688/1334 cut-off events. [2024-06-04 14:18:38,954 INFO L125 PetriNetUnfolderBase]: For 207676/207679 co-relation queries the response was YES. [2024-06-04 14:18:38,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7252 conditions, 1334 events. 688/1334 cut-off events. For 207676/207679 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7617 event pairs, 123 based on Foata normal form. 10/1338 useless extension candidates. Maximal degree in co-relation 7102. Up to 776 conditions per place. [2024-06-04 14:18:38,969 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 133 selfloop transitions, 95 changer transitions 14/244 dead transitions. [2024-06-04 14:18:38,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 244 transitions, 2583 flow [2024-06-04 14:18:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:18:38,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:18:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:18:38,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-04 14:18:38,970 INFO L175 Difference]: Start difference. First operand has 325 places, 214 transitions, 1991 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:18:38,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 244 transitions, 2583 flow [2024-06-04 14:18:39,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 244 transitions, 2347 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-04 14:18:39,495 INFO L231 Difference]: Finished difference. Result has 328 places, 210 transitions, 1919 flow [2024-06-04 14:18:39,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1919, PETRI_PLACES=328, PETRI_TRANSITIONS=210} [2024-06-04 14:18:39,496 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2024-06-04 14:18:39,496 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 210 transitions, 1919 flow [2024-06-04 14:18:39,496 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) [2024-06-04 14:18:39,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:39,496 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] [2024-06-04 14:18:39,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-04 14:18:39,496 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)] === [2024-06-04 14:18:39,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:39,496 INFO L85 PathProgramCache]: Analyzing trace with hash 724375882, now seen corresponding path program 19 times [2024-06-04 14:18:39,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:39,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315150857] [2024-06-04 14:18:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:39,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:43,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:43,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315150857] [2024-06-04 14:18:43,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315150857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:43,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:43,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:18:43,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037550536] [2024-06-04 14:18:43,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:43,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:18:43,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:43,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:18:43,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:18:43,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:43,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 210 transitions, 1919 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:43,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:43,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:43,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:44,032 INFO L124 PetriNetUnfolderBase]: 703/1366 cut-off events. [2024-06-04 14:18:44,032 INFO L125 PetriNetUnfolderBase]: For 271303/271303 co-relation queries the response was YES. [2024-06-04 14:18:44,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8554 conditions, 1366 events. 703/1366 cut-off events. For 271303/271303 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7789 event pairs, 192 based on Foata normal form. 8/1372 useless extension candidates. Maximal degree in co-relation 8403. Up to 1145 conditions per place. [2024-06-04 14:18:44,044 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 206 selfloop transitions, 16 changer transitions 12/236 dead transitions. [2024-06-04 14:18:44,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 236 transitions, 2767 flow [2024-06-04 14:18:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:44,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:18:44,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:18:44,045 INFO L175 Difference]: Start difference. First operand has 328 places, 210 transitions, 1919 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:18:44,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 236 transitions, 2767 flow [2024-06-04 14:18:44,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 236 transitions, 2561 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 14:18:44,679 INFO L231 Difference]: Finished difference. Result has 324 places, 206 transitions, 1727 flow [2024-06-04 14:18:44,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1727, PETRI_PLACES=324, PETRI_TRANSITIONS=206} [2024-06-04 14:18:44,679 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-04 14:18:44,679 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 206 transitions, 1727 flow [2024-06-04 14:18:44,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:44,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:44,679 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] [2024-06-04 14:18:44,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-04 14:18:44,679 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)] === [2024-06-04 14:18:44,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:44,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1623452244, now seen corresponding path program 34 times [2024-06-04 14:18:44,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:44,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080854828] [2024-06-04 14:18:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:44,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:48,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080854828] [2024-06-04 14:18:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080854828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:48,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:48,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:48,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15975517] [2024-06-04 14:18:48,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:48,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:48,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:48,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:48,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:49,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:49,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 206 transitions, 1727 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) [2024-06-04 14:18:49,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:49,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:49,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:49,829 INFO L124 PetriNetUnfolderBase]: 673/1305 cut-off events. [2024-06-04 14:18:49,829 INFO L125 PetriNetUnfolderBase]: For 205850/205853 co-relation queries the response was YES. [2024-06-04 14:18:49,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7740 conditions, 1305 events. 673/1305 cut-off events. For 205850/205853 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7351 event pairs, 133 based on Foata normal form. 2/1301 useless extension candidates. Maximal degree in co-relation 7590. Up to 968 conditions per place. [2024-06-04 14:18:49,850 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 153 selfloop transitions, 73 changer transitions 0/228 dead transitions. [2024-06-04 14:18:49,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 228 transitions, 2235 flow [2024-06-04 14:18:49,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:18:49,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:18:49,852 INFO L175 Difference]: Start difference. First operand has 324 places, 206 transitions, 1727 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:18:49,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 228 transitions, 2235 flow [2024-06-04 14:18:50,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 228 transitions, 2203 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:18:50,469 INFO L231 Difference]: Finished difference. Result has 320 places, 206 transitions, 1845 flow [2024-06-04 14:18:50,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1845, PETRI_PLACES=320, PETRI_TRANSITIONS=206} [2024-06-04 14:18:50,469 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 288 predicate places. [2024-06-04 14:18:50,469 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 206 transitions, 1845 flow [2024-06-04 14:18:50,469 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) [2024-06-04 14:18:50,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:50,469 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] [2024-06-04 14:18:50,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-04 14:18:50,470 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)] === [2024-06-04 14:18:50,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:50,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1597281136, now seen corresponding path program 20 times [2024-06-04 14:18:50,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:50,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325002062] [2024-06-04 14:18:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:50,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:55,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325002062] [2024-06-04 14:18:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325002062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:55,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:55,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:18:55,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038359185] [2024-06-04 14:18:55,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:55,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:18:55,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:55,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:18:55,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:18:55,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:55,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 206 transitions, 1845 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) [2024-06-04 14:18:55,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:55,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:55,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:56,286 INFO L124 PetriNetUnfolderBase]: 685/1332 cut-off events. [2024-06-04 14:18:56,286 INFO L125 PetriNetUnfolderBase]: For 246627/246627 co-relation queries the response was YES. [2024-06-04 14:18:56,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8005 conditions, 1332 events. 685/1332 cut-off events. For 246627/246627 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7555 event pairs, 181 based on Foata normal form. 8/1338 useless extension candidates. Maximal degree in co-relation 7857. Up to 1140 conditions per place. [2024-06-04 14:18:56,301 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 204 selfloop transitions, 18 changer transitions 8/232 dead transitions. [2024-06-04 14:18:56,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 232 transitions, 2681 flow [2024-06-04 14:18:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:18:56,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:18:56,302 INFO L175 Difference]: Start difference. First operand has 320 places, 206 transitions, 1845 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:18:56,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 232 transitions, 2681 flow [2024-06-04 14:18:56,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 232 transitions, 2328 flow, removed 46 selfloop flow, removed 13 redundant places. [2024-06-04 14:18:56,990 INFO L231 Difference]: Finished difference. Result has 318 places, 204 transitions, 1518 flow [2024-06-04 14:18:56,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1518, PETRI_PLACES=318, PETRI_TRANSITIONS=204} [2024-06-04 14:18:56,991 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 286 predicate places. [2024-06-04 14:18:56,991 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 204 transitions, 1518 flow [2024-06-04 14:18:56,991 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) [2024-06-04 14:18:56,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:56,992 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] [2024-06-04 14:18:56,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-04 14:18:56,992 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)] === [2024-06-04 14:18:56,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:56,993 INFO L85 PathProgramCache]: Analyzing trace with hash 144054774, now seen corresponding path program 21 times [2024-06-04 14:18:56,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:56,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129357746] [2024-06-04 14:18:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:56,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:19:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:19:01,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:19:01,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129357746] [2024-06-04 14:19:01,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129357746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:19:01,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:19:01,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:19:01,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644907121] [2024-06-04 14:19:01,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:19:01,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:19:01,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:19:01,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:19:01,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:19:02,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:19:02,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 204 transitions, 1518 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) [2024-06-04 14:19:02,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:19:02,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:19:02,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:19:03,037 INFO L124 PetriNetUnfolderBase]: 663/1295 cut-off events. [2024-06-04 14:19:03,037 INFO L125 PetriNetUnfolderBase]: For 229146/229149 co-relation queries the response was YES. [2024-06-04 14:19:03,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6733 conditions, 1295 events. 663/1295 cut-off events. For 229146/229149 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7343 event pairs, 133 based on Foata normal form. 10/1299 useless extension candidates. Maximal degree in co-relation 6587. Up to 914 conditions per place. [2024-06-04 14:19:03,052 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 147 selfloop transitions, 72 changer transitions 11/232 dead transitions. [2024-06-04 14:19:03,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 232 transitions, 2078 flow [2024-06-04 14:19:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:19:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:19:03,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 14:19:03,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-04 14:19:03,053 INFO L175 Difference]: Start difference. First operand has 318 places, 204 transitions, 1518 flow. Second operand 12 states and 136 transitions. [2024-06-04 14:19:03,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 232 transitions, 2078 flow [2024-06-04 14:19:03,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 232 transitions, 1958 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 14:19:03,524 INFO L231 Difference]: Finished difference. Result has 315 places, 201 transitions, 1535 flow [2024-06-04 14:19:03,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1535, PETRI_PLACES=315, PETRI_TRANSITIONS=201} [2024-06-04 14:19:03,524 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-04 14:19:03,524 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 201 transitions, 1535 flow [2024-06-04 14:19:03,524 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) [2024-06-04 14:19:03,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:19:03,525 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] [2024-06-04 14:19:03,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-04 14:19:03,525 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)] === [2024-06-04 14:19:03,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:19:03,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1597290436, now seen corresponding path program 22 times [2024-06-04 14:19:03,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:19:03,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110026454] [2024-06-04 14:19:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:19:03,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:19:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15