./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix022_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_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-eb4cb34-m [2024-06-21 20:50:59,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 20:50:59,919 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 20:50:59,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 20:50:59,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 20:50:59,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 20:50:59,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 20:50:59,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 20:50:59,947 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 20:50:59,947 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 20:50:59,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 20:50:59,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 20:50:59,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 20:50:59,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 20:50:59,948 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 20:50:59,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 20:50:59,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 20:50:59,964 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 20:50:59,964 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 20:50:59,964 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 20:50:59,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 20:50:59,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 20:50:59,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 20:50:59,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 20:50:59,966 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 20:50:59,966 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 20:50:59,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 20:50:59,966 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 20:50:59,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 20:50:59,967 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 20:50:59,967 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 20:50:59,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 20:50:59,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:50:59,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 20:50:59,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 20:50:59,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 20:50:59,969 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 20:50:59,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 20:50:59,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 20:50:59,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 20:50:59,970 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 20:50:59,972 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 20:50:59,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 20:50:59,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 20:51:00,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 20:51:00,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 20:51:00,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 20:51:00,198 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 20:51:00,198 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 20:51:00,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-21 20:51:01,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 20:51:01,412 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 20:51:01,412 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-21 20:51:01,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d17c8ad7/8b92686a6e014b41a52d5e29a7b650cb/FLAG19ef05e87 [2024-06-21 20:51:01,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d17c8ad7/8b92686a6e014b41a52d5e29a7b650cb [2024-06-21 20:51:01,438 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 20:51:01,439 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 20:51:01,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_tso.yml/witness.yml [2024-06-21 20:51:01,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 20:51:01,541 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 20:51:01,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 20:51:01,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 20:51:01,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 20:51:01,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:51:01" (1/2) ... [2024-06-21 20:51:01,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce7e579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:51:01, skipping insertion in model container [2024-06-21 20:51:01,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:51:01" (1/2) ... [2024-06-21 20:51:01,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6fe649c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:51:01, skipping insertion in model container [2024-06-21 20:51:01,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:51:01" (2/2) ... [2024-06-21 20:51:01,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce7e579 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:01, skipping insertion in model container [2024-06-21 20:51:01,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:51:01" (2/2) ... [2024-06-21 20:51:01,551 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 20:51:01,603 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 20:51:01,604 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-21 20:51:01,605 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-21 20:51:01,605 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 20:51:01,605 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-21 20:51:01,641 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 20:51:01,931 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:51:01,938 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 20:51:02,049 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:51:02,084 INFO L206 MainTranslator]: Completed translation [2024-06-21 20:51:02,085 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02 WrapperNode [2024-06-21 20:51:02,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 20:51:02,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 20:51:02,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 20:51:02,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 20:51:02,093 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 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,115 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 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,145 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-21 20:51:02,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 20:51:02,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 20:51:02,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 20:51:02,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 20:51:02,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,176 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]. [2024-06-21 20:51:02,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,177 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,184 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 20:51:02,212 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 20:51:02,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 20:51:02,213 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 20:51:02,214 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02" (1/1) ... [2024-06-21 20:51:02,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:51:02,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 20:51:02,240 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) [2024-06-21 20:51:02,274 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 [2024-06-21 20:51:02,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 20:51:02,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 20:51:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 20:51:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 20:51:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 20:51:02,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 20:51:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 20:51:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 20:51:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 20:51:02,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 20:51:02,284 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 20:51:02,402 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 20:51:02,403 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 20:51:02,633 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 20:51:02,634 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 20:51:02,748 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 20:51:02,749 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 20:51:02,749 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:51:02 BoogieIcfgContainer [2024-06-21 20:51:02,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 20:51:02,750 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 20:51:02,750 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 20:51:02,753 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 20:51:02,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 08:51:01" (1/4) ... [2024-06-21 20:51:02,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b98bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:51:02, skipping insertion in model container [2024-06-21 20:51:02,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:51:01" (2/4) ... [2024-06-21 20:51:02,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b98bca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:51:02, skipping insertion in model container [2024-06-21 20:51:02,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:51:02" (3/4) ... [2024-06-21 20:51:02,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b98bca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:51:02, skipping insertion in model container [2024-06-21 20:51:02,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:51:02" (4/4) ... [2024-06-21 20:51:02,754 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_tso.i [2024-06-21 20:51:02,768 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 20:51:02,769 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 20:51:02,769 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 20:51:02,802 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 20:51:02,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-21 20:51:02,855 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-21 20:51:02,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:51:02,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 20:51:02,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-21 20:51:02,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-21 20:51:02,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 20:51:02,878 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;@594e78c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 20:51:02,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 20:51:02,882 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 20:51:02,882 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 20:51:02,882 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:51:02,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:02,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 20:51:02,884 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)] === [2024-06-21 20:51:02,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:02,889 INFO L85 PathProgramCache]: Analyzing trace with hash 364174474, now seen corresponding path program 1 times [2024-06-21 20:51:02,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:02,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859582566] [2024-06-21 20:51:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:02,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:03,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:03,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859582566] [2024-06-21 20:51:03,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859582566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:03,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:03,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 20:51:03,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441112608] [2024-06-21 20:51:03,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:03,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 20:51:03,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:03,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 20:51:03,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 20:51:03,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-21 20:51:03,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:03,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:03,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-21 20:51:03,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:03,811 INFO L124 PetriNetUnfolderBase]: 162/306 cut-off events. [2024-06-21 20:51:03,811 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-21 20:51:03,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 306 events. 162/306 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1111 event pairs, 97 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-21 20:51:03,817 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-21 20:51:03,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 113 flow [2024-06-21 20:51:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:51:03,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:51:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-06-21 20:51:03,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-21 20:51:03,829 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 50 transitions. [2024-06-21 20:51:03,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 113 flow [2024-06-21 20:51:03,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 20:51:03,833 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-21 20:51:03,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-21 20:51:03,837 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-21 20:51:03,838 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-21 20:51:03,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:03,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:03,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:03,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 20:51:03,839 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)] === [2024-06-21 20:51:03,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:03,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2079351977, now seen corresponding path program 1 times [2024-06-21 20:51:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:03,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862829546] [2024-06-21 20:51:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:03,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:04,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:04,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862829546] [2024-06-21 20:51:04,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862829546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:04,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:04,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 20:51:04,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738344928] [2024-06-21 20:51:04,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:04,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:51:04,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:04,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:51:04,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:51:04,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 20:51:04,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:04,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:04,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 20:51:04,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:04,373 INFO L124 PetriNetUnfolderBase]: 186/336 cut-off events. [2024-06-21 20:51:04,373 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-21 20:51:04,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 336 events. 186/336 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1173 event pairs, 94 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 766. Up to 319 conditions per place. [2024-06-21 20:51:04,378 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-21 20:51:04,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 157 flow [2024-06-21 20:51:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 20:51:04,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 20:51:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-06-21 20:51:04,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-21 20:51:04,381 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 61 transitions. [2024-06-21 20:51:04,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 157 flow [2024-06-21 20:51:04,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 20:51:04,386 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-21 20:51:04,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-21 20:51:04,386 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-21 20:51:04,387 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-21 20:51:04,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:04,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:04,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:04,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 20:51:04,388 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)] === [2024-06-21 20:51:04,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:04,391 INFO L85 PathProgramCache]: Analyzing trace with hash 35402953, now seen corresponding path program 1 times [2024-06-21 20:51:04,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:04,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223016362] [2024-06-21 20:51:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:04,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:04,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:04,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223016362] [2024-06-21 20:51:04,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223016362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:04,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:04,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:51:04,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709606399] [2024-06-21 20:51:04,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:04,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:51:04,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:04,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:51:04,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:51:04,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 20:51:04,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:04,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:04,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 20:51:04,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:04,832 INFO L124 PetriNetUnfolderBase]: 180/326 cut-off events. [2024-06-21 20:51:04,832 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-21 20:51:04,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 326 events. 180/326 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1108 event pairs, 52 based on Foata normal form. 4/329 useless extension candidates. Maximal degree in co-relation 822. Up to 291 conditions per place. [2024-06-21 20:51:04,834 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-21 20:51:04,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 209 flow [2024-06-21 20:51:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:51:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:51:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-21 20:51:04,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 20:51:04,836 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 75 transitions. [2024-06-21 20:51:04,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 209 flow [2024-06-21 20:51:04,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 20:51:04,837 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 117 flow [2024-06-21 20:51:04,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-06-21 20:51:04,838 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-06-21 20:51:04,838 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 117 flow [2024-06-21 20:51:04,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:04,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:04,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:04,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 20:51:04,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:51:04,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:04,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2055807826, now seen corresponding path program 1 times [2024-06-21 20:51:04,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:04,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862297254] [2024-06-21 20:51:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:04,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:05,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:05,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862297254] [2024-06-21 20:51:05,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862297254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:05,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:05,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:51:05,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121828083] [2024-06-21 20:51:05,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:05,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:51:05,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:51:05,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:51:05,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 20:51:05,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:05,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:05,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 20:51:05,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:05,725 INFO L124 PetriNetUnfolderBase]: 176/318 cut-off events. [2024-06-21 20:51:05,726 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-21 20:51:05,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 318 events. 176/318 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1063 event pairs, 30 based on Foata normal form. 4/321 useless extension candidates. Maximal degree in co-relation 873. Up to 265 conditions per place. [2024-06-21 20:51:05,729 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-21 20:51:05,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 223 flow [2024-06-21 20:51:05,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:51:05,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:51:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-21 20:51:05,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-21 20:51:05,732 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 117 flow. Second operand 6 states and 83 transitions. [2024-06-21 20:51:05,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 223 flow [2024-06-21 20:51:05,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 208 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 20:51:05,735 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 114 flow [2024-06-21 20:51:05,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-21 20:51:05,736 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-21 20:51:05,736 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 114 flow [2024-06-21 20:51:05,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:05,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:05,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:05,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 20:51:05,737 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:51:05,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:05,738 INFO L85 PathProgramCache]: Analyzing trace with hash -955188088, now seen corresponding path program 1 times [2024-06-21 20:51:05,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:05,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988309741] [2024-06-21 20:51:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:05,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:06,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:06,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988309741] [2024-06-21 20:51:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988309741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:06,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:51:06,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358951864] [2024-06-21 20:51:06,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:06,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:51:06,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:51:06,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:51:06,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 20:51:06,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:06,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:06,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 20:51:06,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:06,363 INFO L124 PetriNetUnfolderBase]: 147/282 cut-off events. [2024-06-21 20:51:06,363 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-21 20:51:06,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 282 events. 147/282 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 986 event pairs, 53 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 792. Up to 259 conditions per place. [2024-06-21 20:51:06,365 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 24 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2024-06-21 20:51:06,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 204 flow [2024-06-21 20:51:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:51:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:51:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-21 20:51:06,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-21 20:51:06,366 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 114 flow. Second operand 6 states and 65 transitions. [2024-06-21 20:51:06,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 204 flow [2024-06-21 20:51:06,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 182 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 20:51:06,368 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 138 flow [2024-06-21 20:51:06,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-21 20:51:06,369 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-06-21 20:51:06,369 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 138 flow [2024-06-21 20:51:06,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:06,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:06,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:06,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 20:51:06,370 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)] === [2024-06-21 20:51:06,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash 453941276, now seen corresponding path program 1 times [2024-06-21 20:51:06,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:06,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019912623] [2024-06-21 20:51:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:06,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:07,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:07,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019912623] [2024-06-21 20:51:07,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019912623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:07,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:07,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:51:07,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588164341] [2024-06-21 20:51:07,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:07,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:51:07,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:07,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:51:07,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:51:07,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 20:51:07,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-21 20:51:07,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:07,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 20:51:07,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:07,193 INFO L124 PetriNetUnfolderBase]: 145/279 cut-off events. [2024-06-21 20:51:07,193 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2024-06-21 20:51:07,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 279 events. 145/279 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 967 event pairs, 52 based on Foata normal form. 1/279 useless extension candidates. Maximal degree in co-relation 825. Up to 253 conditions per place. [2024-06-21 20:51:07,195 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 9 changer transitions 0/38 dead transitions. [2024-06-21 20:51:07,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 228 flow [2024-06-21 20:51:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:51:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:51:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-06-21 20:51:07,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-21 20:51:07,196 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 138 flow. Second operand 6 states and 67 transitions. [2024-06-21 20:51:07,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 228 flow [2024-06-21 20:51:07,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 215 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 20:51:07,198 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 160 flow [2024-06-21 20:51:07,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-21 20:51:07,199 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-21 20:51:07,199 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 160 flow [2024-06-21 20:51:07,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-21 20:51:07,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:07,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:07,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 20:51:07,199 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)] === [2024-06-21 20:51:07,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash 876794845, now seen corresponding path program 1 times [2024-06-21 20:51:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:07,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964533392] [2024-06-21 20:51:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:07,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:07,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:07,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964533392] [2024-06-21 20:51:07,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964533392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:07,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:07,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:51:07,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61774396] [2024-06-21 20:51:07,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:07,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:51:07,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:07,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:51:07,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:51:07,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:07,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:07,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:07,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:07,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:07,784 INFO L124 PetriNetUnfolderBase]: 173/314 cut-off events. [2024-06-21 20:51:07,785 INFO L125 PetriNetUnfolderBase]: For 746/746 co-relation queries the response was YES. [2024-06-21 20:51:07,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 314 events. 173/314 cut-off events. For 746/746 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1048 event pairs, 62 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 1015. Up to 294 conditions per place. [2024-06-21 20:51:07,786 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 9 changer transitions 0/43 dead transitions. [2024-06-21 20:51:07,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 272 flow [2024-06-21 20:51:07,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:51:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:51:07,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-21 20:51:07,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-21 20:51:07,788 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 160 flow. Second operand 6 states and 65 transitions. [2024-06-21 20:51:07,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 272 flow [2024-06-21 20:51:07,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 253 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 20:51:07,790 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 176 flow [2024-06-21 20:51:07,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-21 20:51:07,790 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-21 20:51:07,791 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 176 flow [2024-06-21 20:51:07,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:07,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:07,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:07,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 20:51:07,791 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)] === [2024-06-21 20:51:07,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:07,792 INFO L85 PathProgramCache]: Analyzing trace with hash 882508765, now seen corresponding path program 2 times [2024-06-21 20:51:07,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:07,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808232868] [2024-06-21 20:51:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:07,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:08,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:08,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808232868] [2024-06-21 20:51:08,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808232868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:08,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:08,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:51:08,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202572852] [2024-06-21 20:51:08,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:08,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:51:08,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:08,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:51:08,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:51:08,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:08,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:08,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:08,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:08,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:08,368 INFO L124 PetriNetUnfolderBase]: 171/312 cut-off events. [2024-06-21 20:51:08,368 INFO L125 PetriNetUnfolderBase]: For 964/966 co-relation queries the response was YES. [2024-06-21 20:51:08,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 312 events. 171/312 cut-off events. For 964/966 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1052 event pairs, 65 based on Foata normal form. 3/314 useless extension candidates. Maximal degree in co-relation 1064. Up to 285 conditions per place. [2024-06-21 20:51:08,370 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 30 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2024-06-21 20:51:08,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 286 flow [2024-06-21 20:51:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:51:08,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:51:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-21 20:51:08,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-21 20:51:08,371 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 176 flow. Second operand 6 states and 64 transitions. [2024-06-21 20:51:08,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 286 flow [2024-06-21 20:51:08,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 267 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 20:51:08,373 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 200 flow [2024-06-21 20:51:08,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-21 20:51:08,374 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-21 20:51:08,374 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 200 flow [2024-06-21 20:51:08,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:08,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:08,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 20:51:08,374 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)] === [2024-06-21 20:51:08,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash -88469237, now seen corresponding path program 1 times [2024-06-21 20:51:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:08,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573557858] [2024-06-21 20:51:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:08,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:08,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:08,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573557858] [2024-06-21 20:51:08,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573557858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:08,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:08,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:51:08,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999014792] [2024-06-21 20:51:08,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:08,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:51:08,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:08,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:51:08,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:51:08,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:08,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:08,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:08,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:08,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:09,021 INFO L124 PetriNetUnfolderBase]: 177/321 cut-off events. [2024-06-21 20:51:09,022 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-06-21 20:51:09,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 321 events. 177/321 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1079 event pairs, 43 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 1161. Up to 280 conditions per place. [2024-06-21 20:51:09,024 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 39 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2024-06-21 20:51:09,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 358 flow [2024-06-21 20:51:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:51:09,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:51:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 20:51:09,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-21 20:51:09,025 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 200 flow. Second operand 7 states and 78 transitions. [2024-06-21 20:51:09,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 358 flow [2024-06-21 20:51:09,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 331 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 20:51:09,027 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 231 flow [2024-06-21 20:51:09,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-06-21 20:51:09,028 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2024-06-21 20:51:09,028 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 231 flow [2024-06-21 20:51:09,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:09,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:09,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:09,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 20:51:09,029 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)] === [2024-06-21 20:51:09,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:09,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1410837351, now seen corresponding path program 1 times [2024-06-21 20:51:09,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:09,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615806481] [2024-06-21 20:51:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:09,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:09,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:09,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615806481] [2024-06-21 20:51:09,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615806481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:09,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:09,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:51:09,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331354788] [2024-06-21 20:51:09,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:09,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:51:09,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:09,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:51:09,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:51:09,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:09,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 231 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:09,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:09,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:09,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:09,766 INFO L124 PetriNetUnfolderBase]: 180/326 cut-off events. [2024-06-21 20:51:09,766 INFO L125 PetriNetUnfolderBase]: For 1565/1565 co-relation queries the response was YES. [2024-06-21 20:51:09,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 326 events. 180/326 cut-off events. For 1565/1565 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1105 event pairs, 42 based on Foata normal form. 1/326 useless extension candidates. Maximal degree in co-relation 1279. Up to 303 conditions per place. [2024-06-21 20:51:09,768 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 39 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-06-21 20:51:09,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 365 flow [2024-06-21 20:51:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:51:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:51:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-21 20:51:09,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476190476190476 [2024-06-21 20:51:09,770 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 231 flow. Second operand 7 states and 73 transitions. [2024-06-21 20:51:09,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 365 flow [2024-06-21 20:51:09,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 344 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-21 20:51:09,772 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 251 flow [2024-06-21 20:51:09,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-06-21 20:51:09,773 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-21 20:51:09,773 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 251 flow [2024-06-21 20:51:09,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:09,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:09,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:09,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 20:51:09,774 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)] === [2024-06-21 20:51:09,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:09,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1410837165, now seen corresponding path program 2 times [2024-06-21 20:51:09,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:09,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982101371] [2024-06-21 20:51:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:09,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:10,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:10,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982101371] [2024-06-21 20:51:10,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982101371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:10,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:10,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:51:10,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427583278] [2024-06-21 20:51:10,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:10,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:51:10,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:10,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:51:10,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:51:10,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:10,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 251 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:10,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:10,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:10,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:10,422 INFO L124 PetriNetUnfolderBase]: 191/344 cut-off events. [2024-06-21 20:51:10,422 INFO L125 PetriNetUnfolderBase]: For 1999/1999 co-relation queries the response was YES. [2024-06-21 20:51:10,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 344 events. 191/344 cut-off events. For 1999/1999 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1181 event pairs, 42 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1424. Up to 290 conditions per place. [2024-06-21 20:51:10,424 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2024-06-21 20:51:10,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 451 flow [2024-06-21 20:51:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:51:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:51:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-21 20:51:10,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-21 20:51:10,426 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 251 flow. Second operand 7 states and 79 transitions. [2024-06-21 20:51:10,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 451 flow [2024-06-21 20:51:10,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 426 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 20:51:10,429 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 301 flow [2024-06-21 20:51:10,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=301, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-21 20:51:10,429 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-21 20:51:10,430 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 301 flow [2024-06-21 20:51:10,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:10,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:10,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:10,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 20:51:10,430 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)] === [2024-06-21 20:51:10,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:10,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1849076037, now seen corresponding path program 2 times [2024-06-21 20:51:10,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:10,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769170485] [2024-06-21 20:51:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:10,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:11,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769170485] [2024-06-21 20:51:11,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769170485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:11,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:11,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:51:11,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572372006] [2024-06-21 20:51:11,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:11,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:51:11,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:11,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:51:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:51:11,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:11,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:11,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:11,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:11,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:11,218 INFO L124 PetriNetUnfolderBase]: 194/350 cut-off events. [2024-06-21 20:51:11,218 INFO L125 PetriNetUnfolderBase]: For 2455/2455 co-relation queries the response was YES. [2024-06-21 20:51:11,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 350 events. 194/350 cut-off events. For 2455/2455 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1203 event pairs, 46 based on Foata normal form. 1/350 useless extension candidates. Maximal degree in co-relation 1528. Up to 310 conditions per place. [2024-06-21 20:51:11,220 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 39 selfloop transitions, 20 changer transitions 0/61 dead transitions. [2024-06-21 20:51:11,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 502 flow [2024-06-21 20:51:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:11,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-21 20:51:11,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-21 20:51:11,222 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 301 flow. Second operand 8 states and 81 transitions. [2024-06-21 20:51:11,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 502 flow [2024-06-21 20:51:11,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 478 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 20:51:11,226 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 387 flow [2024-06-21 20:51:11,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=387, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-06-21 20:51:11,226 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-21 20:51:11,226 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 387 flow [2024-06-21 20:51:11,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:11,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:11,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:11,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 20:51:11,227 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)] === [2024-06-21 20:51:11,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1587968871, now seen corresponding path program 3 times [2024-06-21 20:51:11,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:11,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374751842] [2024-06-21 20:51:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:11,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:11,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:11,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374751842] [2024-06-21 20:51:11,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374751842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:11,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:11,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:51:11,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326488656] [2024-06-21 20:51:11,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:11,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:51:11,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:11,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:51:11,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:51:11,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:11,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 387 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:11,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:11,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:11,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:12,005 INFO L124 PetriNetUnfolderBase]: 192/347 cut-off events. [2024-06-21 20:51:12,005 INFO L125 PetriNetUnfolderBase]: For 2779/2779 co-relation queries the response was YES. [2024-06-21 20:51:12,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1631 conditions, 347 events. 192/347 cut-off events. For 2779/2779 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1189 event pairs, 46 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 1600. Up to 317 conditions per place. [2024-06-21 20:51:12,008 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 45 selfloop transitions, 14 changer transitions 0/61 dead transitions. [2024-06-21 20:51:12,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 61 transitions, 526 flow [2024-06-21 20:51:12,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:51:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:51:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-21 20:51:12,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34285714285714286 [2024-06-21 20:51:12,009 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 387 flow. Second operand 7 states and 72 transitions. [2024-06-21 20:51:12,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 61 transitions, 526 flow [2024-06-21 20:51:12,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 61 transitions, 499 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-21 20:51:12,012 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 402 flow [2024-06-21 20:51:12,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=402, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-21 20:51:12,013 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-21 20:51:12,013 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 402 flow [2024-06-21 20:51:12,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:12,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:12,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:12,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 20:51:12,014 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)] === [2024-06-21 20:51:12,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:12,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1849313373, now seen corresponding path program 3 times [2024-06-21 20:51:12,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:12,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143495627] [2024-06-21 20:51:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:12,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:12,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:12,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143495627] [2024-06-21 20:51:12,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143495627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:12,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:12,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:51:12,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39879195] [2024-06-21 20:51:12,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:12,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:51:12,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:12,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:51:12,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:51:12,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:12,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 402 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:12,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:12,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:12,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:12,654 INFO L124 PetriNetUnfolderBase]: 188/341 cut-off events. [2024-06-21 20:51:12,654 INFO L125 PetriNetUnfolderBase]: For 3110/3110 co-relation queries the response was YES. [2024-06-21 20:51:12,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 341 events. 188/341 cut-off events. For 3110/3110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1169 event pairs, 50 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 1587. Up to 274 conditions per place. [2024-06-21 20:51:12,657 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 45 selfloop transitions, 20 changer transitions 0/67 dead transitions. [2024-06-21 20:51:12,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 67 transitions, 606 flow [2024-06-21 20:51:12,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:51:12,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:51:12,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 20:51:12,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-21 20:51:12,658 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 402 flow. Second operand 7 states and 78 transitions. [2024-06-21 20:51:12,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 67 transitions, 606 flow [2024-06-21 20:51:12,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 577 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 20:51:12,662 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 442 flow [2024-06-21 20:51:12,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-06-21 20:51:12,662 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-21 20:51:12,662 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 442 flow [2024-06-21 20:51:12,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:12,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:12,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:12,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 20:51:12,663 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)] === [2024-06-21 20:51:12,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:12,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1849067109, now seen corresponding path program 1 times [2024-06-21 20:51:12,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377341031] [2024-06-21 20:51:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:13,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:13,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377341031] [2024-06-21 20:51:13,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377341031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:13,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:13,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:51:13,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990906937] [2024-06-21 20:51:13,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:13,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:51:13,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:13,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:51:13,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:51:13,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:13,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 442 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) [2024-06-21 20:51:13,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:13,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:13,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:13,566 INFO L124 PetriNetUnfolderBase]: 186/337 cut-off events. [2024-06-21 20:51:13,567 INFO L125 PetriNetUnfolderBase]: For 3369/3369 co-relation queries the response was YES. [2024-06-21 20:51:13,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 337 events. 186/337 cut-off events. For 3369/3369 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1145 event pairs, 41 based on Foata normal form. 1/337 useless extension candidates. Maximal degree in co-relation 1640. Up to 317 conditions per place. [2024-06-21 20:51:13,569 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 51 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2024-06-21 20:51:13,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 592 flow [2024-06-21 20:51:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:51:13,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:51:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-21 20:51:13,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380952380952381 [2024-06-21 20:51:13,570 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 442 flow. Second operand 7 states and 71 transitions. [2024-06-21 20:51:13,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 592 flow [2024-06-21 20:51:13,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 539 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-21 20:51:13,574 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 433 flow [2024-06-21 20:51:13,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-06-21 20:51:13,575 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-21 20:51:13,575 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 433 flow [2024-06-21 20:51:13,575 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) [2024-06-21 20:51:13,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:13,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:13,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 20:51:13,576 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)] === [2024-06-21 20:51:13,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:13,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1071863754, now seen corresponding path program 1 times [2024-06-21 20:51:13,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:13,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602489502] [2024-06-21 20:51:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:13,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:14,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:14,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602489502] [2024-06-21 20:51:14,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602489502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:14,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:14,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:14,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719856954] [2024-06-21 20:51:14,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:14,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:14,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:14,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:14,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:14,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:14,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 433 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:14,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:14,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:14,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:14,539 INFO L124 PetriNetUnfolderBase]: 184/334 cut-off events. [2024-06-21 20:51:14,539 INFO L125 PetriNetUnfolderBase]: For 3507/3507 co-relation queries the response was YES. [2024-06-21 20:51:14,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 334 events. 184/334 cut-off events. For 3507/3507 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1136 event pairs, 40 based on Foata normal form. 1/334 useless extension candidates. Maximal degree in co-relation 1617. Up to 290 conditions per place. [2024-06-21 20:51:14,541 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 54 selfloop transitions, 15 changer transitions 0/71 dead transitions. [2024-06-21 20:51:14,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 605 flow [2024-06-21 20:51:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:51:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:51:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 20:51:14,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-21 20:51:14,542 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 433 flow. Second operand 7 states and 78 transitions. [2024-06-21 20:51:14,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 605 flow [2024-06-21 20:51:14,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 554 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:14,546 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 420 flow [2024-06-21 20:51:14,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=420, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2024-06-21 20:51:14,546 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-21 20:51:14,547 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 420 flow [2024-06-21 20:51:14,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:14,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:14,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:14,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 20:51:14,547 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)] === [2024-06-21 20:51:14,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash 782561017, now seen corresponding path program 1 times [2024-06-21 20:51:14,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:14,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425623628] [2024-06-21 20:51:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:14,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:15,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:15,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425623628] [2024-06-21 20:51:15,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425623628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:15,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:15,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:15,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881492926] [2024-06-21 20:51:15,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:15,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:15,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:15,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:15,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:15,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:15,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 420 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:15,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:15,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:15,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:15,345 INFO L124 PetriNetUnfolderBase]: 190/344 cut-off events. [2024-06-21 20:51:15,346 INFO L125 PetriNetUnfolderBase]: For 4052/4052 co-relation queries the response was YES. [2024-06-21 20:51:15,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 344 events. 190/344 cut-off events. For 4052/4052 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1192 event pairs, 39 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1675. Up to 295 conditions per place. [2024-06-21 20:51:15,348 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 58 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2024-06-21 20:51:15,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 628 flow [2024-06-21 20:51:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 20:51:15,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-21 20:51:15,350 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 420 flow. Second operand 8 states and 87 transitions. [2024-06-21 20:51:15,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 628 flow [2024-06-21 20:51:15,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 593 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:15,354 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 442 flow [2024-06-21 20:51:15,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=442, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-06-21 20:51:15,355 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-21 20:51:15,355 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 442 flow [2024-06-21 20:51:15,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:15,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:15,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:15,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 20:51:15,355 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)] === [2024-06-21 20:51:15,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash 786280087, now seen corresponding path program 2 times [2024-06-21 20:51:15,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:15,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319411049] [2024-06-21 20:51:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:15,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:15,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:15,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319411049] [2024-06-21 20:51:15,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319411049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:15,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:15,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:15,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271622505] [2024-06-21 20:51:15,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:15,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:15,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:15,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:15,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:16,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:16,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 442 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:16,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:16,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:16,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:16,219 INFO L124 PetriNetUnfolderBase]: 196/354 cut-off events. [2024-06-21 20:51:16,219 INFO L125 PetriNetUnfolderBase]: For 4593/4593 co-relation queries the response was YES. [2024-06-21 20:51:16,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 354 events. 196/354 cut-off events. For 4593/4593 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1240 event pairs, 39 based on Foata normal form. 2/355 useless extension candidates. Maximal degree in co-relation 1783. Up to 293 conditions per place. [2024-06-21 20:51:16,221 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 55 selfloop transitions, 19 changer transitions 0/76 dead transitions. [2024-06-21 20:51:16,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 76 transitions, 648 flow [2024-06-21 20:51:16,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 20:51:16,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-21 20:51:16,223 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 442 flow. Second operand 8 states and 87 transitions. [2024-06-21 20:51:16,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 76 transitions, 648 flow [2024-06-21 20:51:16,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 607 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:16,227 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 468 flow [2024-06-21 20:51:16,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=468, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-06-21 20:51:16,227 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-06-21 20:51:16,228 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 468 flow [2024-06-21 20:51:16,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:16,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:16,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:16,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 20:51:16,228 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)] === [2024-06-21 20:51:16,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash 786285667, now seen corresponding path program 3 times [2024-06-21 20:51:16,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:16,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960996087] [2024-06-21 20:51:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:16,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:16,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:16,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960996087] [2024-06-21 20:51:16,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960996087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:16,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:16,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:16,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091051270] [2024-06-21 20:51:16,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:16,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:16,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:16,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:16,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:16,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 468 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:16,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:16,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:16,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:16,968 INFO L124 PetriNetUnfolderBase]: 202/364 cut-off events. [2024-06-21 20:51:16,969 INFO L125 PetriNetUnfolderBase]: For 5257/5257 co-relation queries the response was YES. [2024-06-21 20:51:16,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 364 events. 202/364 cut-off events. For 5257/5257 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1280 event pairs, 43 based on Foata normal form. 2/365 useless extension candidates. Maximal degree in co-relation 1886. Up to 335 conditions per place. [2024-06-21 20:51:16,971 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 59 selfloop transitions, 14 changer transitions 0/75 dead transitions. [2024-06-21 20:51:16,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 664 flow [2024-06-21 20:51:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:16,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-21 20:51:16,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-21 20:51:16,972 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 468 flow. Second operand 8 states and 82 transitions. [2024-06-21 20:51:16,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 664 flow [2024-06-21 20:51:16,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 613 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:16,977 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 478 flow [2024-06-21 20:51:16,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=478, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2024-06-21 20:51:16,977 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-21 20:51:16,977 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 478 flow [2024-06-21 20:51:16,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:16,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:16,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:16,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 20:51:16,978 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)] === [2024-06-21 20:51:16,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash 786285884, now seen corresponding path program 1 times [2024-06-21 20:51:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:16,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133416245] [2024-06-21 20:51:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:16,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:17,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133416245] [2024-06-21 20:51:17,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133416245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:17,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:17,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:17,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909589082] [2024-06-21 20:51:17,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:17,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:17,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:17,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:17,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:17,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:17,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 478 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:17,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:17,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:17,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:17,793 INFO L124 PetriNetUnfolderBase]: 205/369 cut-off events. [2024-06-21 20:51:17,793 INFO L125 PetriNetUnfolderBase]: For 5507/5507 co-relation queries the response was YES. [2024-06-21 20:51:17,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 369 events. 205/369 cut-off events. For 5507/5507 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1292 event pairs, 42 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1935. Up to 343 conditions per place. [2024-06-21 20:51:17,796 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 60 selfloop transitions, 14 changer transitions 0/76 dead transitions. [2024-06-21 20:51:17,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 76 transitions, 664 flow [2024-06-21 20:51:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:17,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-21 20:51:17,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-21 20:51:17,798 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 478 flow. Second operand 8 states and 81 transitions. [2024-06-21 20:51:17,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 76 transitions, 664 flow [2024-06-21 20:51:17,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 76 transitions, 619 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:17,804 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 486 flow [2024-06-21 20:51:17,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=486, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2024-06-21 20:51:17,804 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-21 20:51:17,804 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 486 flow [2024-06-21 20:51:17,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:17,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:17,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:17,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 20:51:17,805 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)] === [2024-06-21 20:51:17,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:17,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1990014268, now seen corresponding path program 2 times [2024-06-21 20:51:17,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:17,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754069321] [2024-06-21 20:51:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:17,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:18,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:18,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754069321] [2024-06-21 20:51:18,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754069321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:18,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:18,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:18,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826011302] [2024-06-21 20:51:18,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:18,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:18,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:18,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:18,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:18,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:18,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 486 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:18,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:18,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:18,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:18,650 INFO L124 PetriNetUnfolderBase]: 211/379 cut-off events. [2024-06-21 20:51:18,651 INFO L125 PetriNetUnfolderBase]: For 6151/6151 co-relation queries the response was YES. [2024-06-21 20:51:18,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 379 events. 211/379 cut-off events. For 6151/6151 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1334 event pairs, 42 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 2016. Up to 351 conditions per place. [2024-06-21 20:51:18,654 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 61 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2024-06-21 20:51:18,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 676 flow [2024-06-21 20:51:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-21 20:51:18,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 20:51:18,655 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 486 flow. Second operand 8 states and 80 transitions. [2024-06-21 20:51:18,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 676 flow [2024-06-21 20:51:18,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 77 transitions, 639 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:18,661 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 505 flow [2024-06-21 20:51:18,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=505, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-06-21 20:51:18,662 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-21 20:51:18,662 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 505 flow [2024-06-21 20:51:18,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:18,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:18,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:18,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 20:51:18,663 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)] === [2024-06-21 20:51:18,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:18,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1989747141, now seen corresponding path program 4 times [2024-06-21 20:51:18,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:18,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694532442] [2024-06-21 20:51:18,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:18,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:19,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:19,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694532442] [2024-06-21 20:51:19,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694532442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:19,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:19,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:19,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314106525] [2024-06-21 20:51:19,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:19,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:19,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:19,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:19,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 505 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:19,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:19,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:19,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:19,434 INFO L124 PetriNetUnfolderBase]: 227/406 cut-off events. [2024-06-21 20:51:19,435 INFO L125 PetriNetUnfolderBase]: For 7446/7446 co-relation queries the response was YES. [2024-06-21 20:51:19,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2294 conditions, 406 events. 227/406 cut-off events. For 7446/7446 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1473 event pairs, 46 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 2253. Up to 346 conditions per place. [2024-06-21 20:51:19,437 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 58 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-06-21 20:51:19,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 791 flow [2024-06-21 20:51:19,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:19,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-21 20:51:19,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 20:51:19,439 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 505 flow. Second operand 8 states and 85 transitions. [2024-06-21 20:51:19,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 791 flow [2024-06-21 20:51:19,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 755 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:19,445 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 580 flow [2024-06-21 20:51:19,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=580, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-06-21 20:51:19,446 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-21 20:51:19,446 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 580 flow [2024-06-21 20:51:19,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:19,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:19,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:19,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 20:51:19,447 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)] === [2024-06-21 20:51:19,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:19,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1989747358, now seen corresponding path program 3 times [2024-06-21 20:51:19,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:19,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391013428] [2024-06-21 20:51:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:19,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:20,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:20,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391013428] [2024-06-21 20:51:20,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391013428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:20,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:20,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:20,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107980601] [2024-06-21 20:51:20,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:20,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:20,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:20,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:20,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:20,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:20,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 580 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:20,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:20,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:20,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:20,214 INFO L124 PetriNetUnfolderBase]: 233/416 cut-off events. [2024-06-21 20:51:20,214 INFO L125 PetriNetUnfolderBase]: For 8411/8411 co-relation queries the response was YES. [2024-06-21 20:51:20,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 416 events. 233/416 cut-off events. For 8411/8411 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1536 event pairs, 44 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 2379. Up to 343 conditions per place. [2024-06-21 20:51:20,216 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 60 selfloop transitions, 26 changer transitions 0/88 dead transitions. [2024-06-21 20:51:20,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 876 flow [2024-06-21 20:51:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 20:51:20,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-21 20:51:20,217 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 580 flow. Second operand 8 states and 87 transitions. [2024-06-21 20:51:20,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 876 flow [2024-06-21 20:51:20,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 833 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-21 20:51:20,224 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 642 flow [2024-06-21 20:51:20,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=642, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2024-06-21 20:51:20,225 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-21 20:51:20,225 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 642 flow [2024-06-21 20:51:20,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:20,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:20,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:20,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 20:51:20,225 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)] === [2024-06-21 20:51:20,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1494132986, now seen corresponding path program 4 times [2024-06-21 20:51:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:20,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486068151] [2024-06-21 20:51:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:20,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:20,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:20,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486068151] [2024-06-21 20:51:20,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486068151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:20,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:20,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:20,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754148309] [2024-06-21 20:51:20,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:20,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:20,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:20,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:20,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:20,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 642 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:20,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:20,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:20,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:20,994 INFO L124 PetriNetUnfolderBase]: 231/413 cut-off events. [2024-06-21 20:51:20,994 INFO L125 PetriNetUnfolderBase]: For 8539/8539 co-relation queries the response was YES. [2024-06-21 20:51:20,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 413 events. 231/413 cut-off events. For 8539/8539 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1509 event pairs, 46 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 2409. Up to 380 conditions per place. [2024-06-21 20:51:20,997 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 68 selfloop transitions, 16 changer transitions 0/86 dead transitions. [2024-06-21 20:51:20,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 86 transitions, 850 flow [2024-06-21 20:51:20,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-21 20:51:20,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 20:51:20,998 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 642 flow. Second operand 8 states and 80 transitions. [2024-06-21 20:51:20,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 86 transitions, 850 flow [2024-06-21 20:51:21,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 86 transitions, 813 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-21 20:51:21,007 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 670 flow [2024-06-21 20:51:21,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=670, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-06-21 20:51:21,007 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-21 20:51:21,007 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 670 flow [2024-06-21 20:51:21,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:21,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:21,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:21,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 20:51:21,007 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)] === [2024-06-21 20:51:21,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1494133203, now seen corresponding path program 5 times [2024-06-21 20:51:21,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:21,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11303052] [2024-06-21 20:51:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:21,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:21,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:21,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11303052] [2024-06-21 20:51:21,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11303052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:21,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:21,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:21,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455236333] [2024-06-21 20:51:21,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:21,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:21,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:21,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:21,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:21,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:21,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 670 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:21,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:21,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:21,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:21,749 INFO L124 PetriNetUnfolderBase]: 227/407 cut-off events. [2024-06-21 20:51:21,749 INFO L125 PetriNetUnfolderBase]: For 8771/8771 co-relation queries the response was YES. [2024-06-21 20:51:21,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 407 events. 227/407 cut-off events. For 8771/8771 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1487 event pairs, 45 based on Foata normal form. 2/408 useless extension candidates. Maximal degree in co-relation 2372. Up to 371 conditions per place. [2024-06-21 20:51:21,752 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 67 selfloop transitions, 18 changer transitions 0/87 dead transitions. [2024-06-21 20:51:21,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 87 transitions, 860 flow [2024-06-21 20:51:21,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-21 20:51:21,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-21 20:51:21,754 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 670 flow. Second operand 9 states and 88 transitions. [2024-06-21 20:51:21,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 87 transitions, 860 flow [2024-06-21 20:51:21,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 87 transitions, 799 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:21,762 INFO L231 Difference]: Finished difference. Result has 98 places, 79 transitions, 650 flow [2024-06-21 20:51:21,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=650, PETRI_PLACES=98, PETRI_TRANSITIONS=79} [2024-06-21 20:51:21,763 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-21 20:51:21,763 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 79 transitions, 650 flow [2024-06-21 20:51:21,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:21,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:21,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:21,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 20:51:21,764 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)] === [2024-06-21 20:51:21,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:21,766 INFO L85 PathProgramCache]: Analyzing trace with hash 508137891, now seen corresponding path program 6 times [2024-06-21 20:51:21,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:21,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74989508] [2024-06-21 20:51:21,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:21,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:22,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:22,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74989508] [2024-06-21 20:51:22,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74989508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:22,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:22,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:22,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276283359] [2024-06-21 20:51:22,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:22,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:22,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:22,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:22,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:22,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:22,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 79 transitions, 650 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:22,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:22,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:22,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:22,563 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-21 20:51:22,563 INFO L125 PetriNetUnfolderBase]: For 9084/9084 co-relation queries the response was YES. [2024-06-21 20:51:22,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2422 conditions, 409 events. 228/409 cut-off events. For 9084/9084 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1498 event pairs, 47 based on Foata normal form. 2/410 useless extension candidates. Maximal degree in co-relation 2375. Up to 335 conditions per place. [2024-06-21 20:51:22,566 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 68 selfloop transitions, 22 changer transitions 0/92 dead transitions. [2024-06-21 20:51:22,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 92 transitions, 894 flow [2024-06-21 20:51:22,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-21 20:51:22,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-21 20:51:22,568 INFO L175 Difference]: Start difference. First operand has 98 places, 79 transitions, 650 flow. Second operand 8 states and 86 transitions. [2024-06-21 20:51:22,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 92 transitions, 894 flow [2024-06-21 20:51:22,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 842 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 20:51:22,577 INFO L231 Difference]: Finished difference. Result has 98 places, 81 transitions, 683 flow [2024-06-21 20:51:22,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=683, PETRI_PLACES=98, PETRI_TRANSITIONS=81} [2024-06-21 20:51:22,578 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-21 20:51:22,578 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 81 transitions, 683 flow [2024-06-21 20:51:22,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:22,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:22,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:22,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 20:51:22,578 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)] === [2024-06-21 20:51:22,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:22,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1990024188, now seen corresponding path program 1 times [2024-06-21 20:51:22,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:22,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596812539] [2024-06-21 20:51:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:23,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:23,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596812539] [2024-06-21 20:51:23,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596812539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:23,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:23,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197423642] [2024-06-21 20:51:23,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:23,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:23,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:23,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:23,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 81 transitions, 683 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) [2024-06-21 20:51:23,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:23,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:23,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:23,436 INFO L124 PetriNetUnfolderBase]: 225/403 cut-off events. [2024-06-21 20:51:23,436 INFO L125 PetriNetUnfolderBase]: For 9124/9124 co-relation queries the response was YES. [2024-06-21 20:51:23,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2408 conditions, 403 events. 225/403 cut-off events. For 9124/9124 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1445 event pairs, 43 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 2360. Up to 377 conditions per place. [2024-06-21 20:51:23,439 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 74 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-06-21 20:51:23,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 89 transitions, 875 flow [2024-06-21 20:51:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:23,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:23,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-06-21 20:51:23,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-21 20:51:23,441 INFO L175 Difference]: Start difference. First operand has 98 places, 81 transitions, 683 flow. Second operand 8 states and 78 transitions. [2024-06-21 20:51:23,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 89 transitions, 875 flow [2024-06-21 20:51:23,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 89 transitions, 806 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:23,450 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 644 flow [2024-06-21 20:51:23,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=644, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-06-21 20:51:23,451 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2024-06-21 20:51:23,451 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 644 flow [2024-06-21 20:51:23,451 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) [2024-06-21 20:51:23,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:23,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:23,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 20:51:23,451 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)] === [2024-06-21 20:51:23,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1765142870, now seen corresponding path program 1 times [2024-06-21 20:51:23,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:23,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572310400] [2024-06-21 20:51:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:23,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:24,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:24,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572310400] [2024-06-21 20:51:24,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572310400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:24,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:24,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:24,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643016012] [2024-06-21 20:51:24,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:24,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:24,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:24,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:24,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:24,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 644 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:24,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:24,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:24,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:24,376 INFO L124 PetriNetUnfolderBase]: 229/411 cut-off events. [2024-06-21 20:51:24,376 INFO L125 PetriNetUnfolderBase]: For 9641/9641 co-relation queries the response was YES. [2024-06-21 20:51:24,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 411 events. 229/411 cut-off events. For 9641/9641 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1509 event pairs, 24 based on Foata normal form. 2/412 useless extension candidates. Maximal degree in co-relation 2366. Up to 350 conditions per place. [2024-06-21 20:51:24,379 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 81 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-06-21 20:51:24,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 882 flow [2024-06-21 20:51:24,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-21 20:51:24,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 20:51:24,382 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 644 flow. Second operand 8 states and 84 transitions. [2024-06-21 20:51:24,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 882 flow [2024-06-21 20:51:24,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 96 transitions, 850 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:24,393 INFO L231 Difference]: Finished difference. Result has 102 places, 82 transitions, 658 flow [2024-06-21 20:51:24,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=102, PETRI_TRANSITIONS=82} [2024-06-21 20:51:24,393 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-21 20:51:24,394 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 82 transitions, 658 flow [2024-06-21 20:51:24,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:24,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:24,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:24,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 20:51:24,394 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)] === [2024-06-21 20:51:24,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:24,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1513212632, now seen corresponding path program 1 times [2024-06-21 20:51:24,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:24,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647659681] [2024-06-21 20:51:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:24,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:25,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:25,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647659681] [2024-06-21 20:51:25,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647659681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:25,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:25,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:25,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348917604] [2024-06-21 20:51:25,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:25,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:25,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:25,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:25,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:25,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 82 transitions, 658 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:25,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:25,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:25,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:25,509 INFO L124 PetriNetUnfolderBase]: 227/408 cut-off events. [2024-06-21 20:51:25,509 INFO L125 PetriNetUnfolderBase]: For 9512/9512 co-relation queries the response was YES. [2024-06-21 20:51:25,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 408 events. 227/408 cut-off events. For 9512/9512 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1490 event pairs, 38 based on Foata normal form. 1/408 useless extension candidates. Maximal degree in co-relation 2342. Up to 353 conditions per place. [2024-06-21 20:51:25,513 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 77 selfloop transitions, 19 changer transitions 0/98 dead transitions. [2024-06-21 20:51:25,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 98 transitions, 926 flow [2024-06-21 20:51:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 20:51:25,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-21 20:51:25,514 INFO L175 Difference]: Start difference. First operand has 102 places, 82 transitions, 658 flow. Second operand 8 states and 87 transitions. [2024-06-21 20:51:25,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 98 transitions, 926 flow [2024-06-21 20:51:25,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 98 transitions, 890 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:25,525 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 708 flow [2024-06-21 20:51:25,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=708, PETRI_PLACES=104, PETRI_TRANSITIONS=84} [2024-06-21 20:51:25,525 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-06-21 20:51:25,525 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 708 flow [2024-06-21 20:51:25,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:25,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:25,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:25,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 20:51:25,526 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)] === [2024-06-21 20:51:25,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1765203320, now seen corresponding path program 2 times [2024-06-21 20:51:25,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:25,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442161937] [2024-06-21 20:51:25,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:25,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:26,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442161937] [2024-06-21 20:51:26,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442161937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:26,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:26,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:26,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930616180] [2024-06-21 20:51:26,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:26,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:26,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:26,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:26,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:26,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:26,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 84 transitions, 708 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:26,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:26,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:26,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:26,532 INFO L124 PetriNetUnfolderBase]: 252/455 cut-off events. [2024-06-21 20:51:26,533 INFO L125 PetriNetUnfolderBase]: For 11172/11172 co-relation queries the response was YES. [2024-06-21 20:51:26,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2668 conditions, 455 events. 252/455 cut-off events. For 11172/11172 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1754 event pairs, 41 based on Foata normal form. 2/456 useless extension candidates. Maximal degree in co-relation 2617. Up to 388 conditions per place. [2024-06-21 20:51:26,536 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 85 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-21 20:51:26,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 109 transitions, 1088 flow [2024-06-21 20:51:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:26,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:26,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-21 20:51:26,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-21 20:51:26,537 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 708 flow. Second operand 9 states and 94 transitions. [2024-06-21 20:51:26,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 109 transitions, 1088 flow [2024-06-21 20:51:26,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 109 transitions, 1004 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:26,549 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 827 flow [2024-06-21 20:51:26,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=827, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2024-06-21 20:51:26,550 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-21 20:51:26,550 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 827 flow [2024-06-21 20:51:26,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:26,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:26,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:26,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 20:51:26,551 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)] === [2024-06-21 20:51:26,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:26,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1768004790, now seen corresponding path program 1 times [2024-06-21 20:51:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:26,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611872960] [2024-06-21 20:51:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:26,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:27,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:27,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611872960] [2024-06-21 20:51:27,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611872960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:27,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:27,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:27,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871842043] [2024-06-21 20:51:27,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:27,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:27,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:27,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:27,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:27,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:27,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 827 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:27,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:27,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:27,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:27,477 INFO L124 PetriNetUnfolderBase]: 258/465 cut-off events. [2024-06-21 20:51:27,477 INFO L125 PetriNetUnfolderBase]: For 11381/11381 co-relation queries the response was YES. [2024-06-21 20:51:27,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 465 events. 258/465 cut-off events. For 11381/11381 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1808 event pairs, 37 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2662. Up to 383 conditions per place. [2024-06-21 20:51:27,481 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 86 selfloop transitions, 26 changer transitions 0/114 dead transitions. [2024-06-21 20:51:27,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 1128 flow [2024-06-21 20:51:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:27,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 20:51:27,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-21 20:51:27,483 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 827 flow. Second operand 9 states and 96 transitions. [2024-06-21 20:51:27,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 1128 flow [2024-06-21 20:51:27,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 1098 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-21 20:51:27,496 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 886 flow [2024-06-21 20:51:27,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=886, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2024-06-21 20:51:27,496 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-06-21 20:51:27,496 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 886 flow [2024-06-21 20:51:27,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:27,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:27,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:27,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 20:51:27,497 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)] === [2024-06-21 20:51:27,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:27,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1883291000, now seen corresponding path program 3 times [2024-06-21 20:51:27,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:27,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885612814] [2024-06-21 20:51:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:27,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:28,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:28,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885612814] [2024-06-21 20:51:28,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885612814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:28,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:28,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:28,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002570135] [2024-06-21 20:51:28,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:28,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:28,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:28,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:28,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:28,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:28,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:28,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:28,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:28,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:28,469 INFO L124 PetriNetUnfolderBase]: 262/473 cut-off events. [2024-06-21 20:51:28,469 INFO L125 PetriNetUnfolderBase]: For 12304/12304 co-relation queries the response was YES. [2024-06-21 20:51:28,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 473 events. 262/473 cut-off events. For 12304/12304 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1846 event pairs, 38 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2776. Up to 388 conditions per place. [2024-06-21 20:51:28,474 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 82 selfloop transitions, 27 changer transitions 0/111 dead transitions. [2024-06-21 20:51:28,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 111 transitions, 1154 flow [2024-06-21 20:51:28,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:28,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:28,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-21 20:51:28,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-21 20:51:28,476 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 886 flow. Second operand 8 states and 86 transitions. [2024-06-21 20:51:28,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 111 transitions, 1154 flow [2024-06-21 20:51:28,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 111 transitions, 1081 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:28,489 INFO L231 Difference]: Finished difference. Result has 118 places, 99 transitions, 891 flow [2024-06-21 20:51:28,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=891, PETRI_PLACES=118, PETRI_TRANSITIONS=99} [2024-06-21 20:51:28,491 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-21 20:51:28,491 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 99 transitions, 891 flow [2024-06-21 20:51:28,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:28,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:28,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:28,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 20:51:28,491 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)] === [2024-06-21 20:51:28,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1395120116, now seen corresponding path program 2 times [2024-06-21 20:51:28,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:28,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210325006] [2024-06-21 20:51:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:28,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:29,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:29,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210325006] [2024-06-21 20:51:29,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210325006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:29,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:29,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:29,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055077876] [2024-06-21 20:51:29,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:29,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:29,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:29,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:29,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:29,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:29,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 99 transitions, 891 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:29,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:29,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:29,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:29,336 INFO L124 PetriNetUnfolderBase]: 283/508 cut-off events. [2024-06-21 20:51:29,336 INFO L125 PetriNetUnfolderBase]: For 13229/13229 co-relation queries the response was YES. [2024-06-21 20:51:29,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 508 events. 283/508 cut-off events. For 13229/13229 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2055 event pairs, 40 based on Foata normal form. 2/509 useless extension candidates. Maximal degree in co-relation 2939. Up to 424 conditions per place. [2024-06-21 20:51:29,339 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 92 selfloop transitions, 28 changer transitions 0/122 dead transitions. [2024-06-21 20:51:29,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 122 transitions, 1257 flow [2024-06-21 20:51:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:51:29,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:51:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:51:29,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-21 20:51:29,340 INFO L175 Difference]: Start difference. First operand has 118 places, 99 transitions, 891 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:51:29,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 122 transitions, 1257 flow [2024-06-21 20:51:29,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 1182 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:29,355 INFO L231 Difference]: Finished difference. Result has 125 places, 107 transitions, 986 flow [2024-06-21 20:51:29,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=986, PETRI_PLACES=125, PETRI_TRANSITIONS=107} [2024-06-21 20:51:29,356 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-21 20:51:29,356 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 107 transitions, 986 flow [2024-06-21 20:51:29,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:29,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:29,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:29,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 20:51:29,357 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)] === [2024-06-21 20:51:29,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:29,357 INFO L85 PathProgramCache]: Analyzing trace with hash -956869758, now seen corresponding path program 3 times [2024-06-21 20:51:29,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:29,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077811952] [2024-06-21 20:51:29,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:29,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:29,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:29,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077811952] [2024-06-21 20:51:29,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077811952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:29,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:29,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:29,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544787183] [2024-06-21 20:51:29,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:29,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:29,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:29,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:29,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:29,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 107 transitions, 986 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:29,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:29,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:29,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:30,160 INFO L124 PetriNetUnfolderBase]: 322/572 cut-off events. [2024-06-21 20:51:30,160 INFO L125 PetriNetUnfolderBase]: For 17634/17634 co-relation queries the response was YES. [2024-06-21 20:51:30,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 572 events. 322/572 cut-off events. For 17634/17634 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2353 event pairs, 49 based on Foata normal form. 4/575 useless extension candidates. Maximal degree in co-relation 3542. Up to 484 conditions per place. [2024-06-21 20:51:30,163 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 102 selfloop transitions, 25 changer transitions 0/129 dead transitions. [2024-06-21 20:51:30,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 129 transitions, 1458 flow [2024-06-21 20:51:30,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 20:51:30,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-21 20:51:30,165 INFO L175 Difference]: Start difference. First operand has 125 places, 107 transitions, 986 flow. Second operand 9 states and 97 transitions. [2024-06-21 20:51:30,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 129 transitions, 1458 flow [2024-06-21 20:51:30,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 129 transitions, 1392 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-21 20:51:30,186 INFO L231 Difference]: Finished difference. Result has 130 places, 114 transitions, 1099 flow [2024-06-21 20:51:30,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1099, PETRI_PLACES=130, PETRI_TRANSITIONS=114} [2024-06-21 20:51:30,186 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-21 20:51:30,186 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 114 transitions, 1099 flow [2024-06-21 20:51:30,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:30,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:30,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:30,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 20:51:30,187 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)] === [2024-06-21 20:51:30,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:30,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1883475698, now seen corresponding path program 1 times [2024-06-21 20:51:30,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:30,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524451419] [2024-06-21 20:51:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:30,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:31,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:31,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524451419] [2024-06-21 20:51:31,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524451419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:31,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:31,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:31,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899375556] [2024-06-21 20:51:31,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:31,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:31,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:31,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:31,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:31,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:31,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 114 transitions, 1099 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:31,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:31,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:31,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:31,279 INFO L124 PetriNetUnfolderBase]: 318/565 cut-off events. [2024-06-21 20:51:31,279 INFO L125 PetriNetUnfolderBase]: For 16746/16746 co-relation queries the response was YES. [2024-06-21 20:51:31,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3623 conditions, 565 events. 318/565 cut-off events. For 16746/16746 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2321 event pairs, 56 based on Foata normal form. 1/565 useless extension candidates. Maximal degree in co-relation 3559. Up to 526 conditions per place. [2024-06-21 20:51:31,282 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 102 selfloop transitions, 20 changer transitions 0/124 dead transitions. [2024-06-21 20:51:31,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 124 transitions, 1367 flow [2024-06-21 20:51:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-21 20:51:31,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-21 20:51:31,283 INFO L175 Difference]: Start difference. First operand has 130 places, 114 transitions, 1099 flow. Second operand 9 states and 89 transitions. [2024-06-21 20:51:31,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 124 transitions, 1367 flow [2024-06-21 20:51:31,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 124 transitions, 1299 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-21 20:51:31,303 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 1076 flow [2024-06-21 20:51:31,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1076, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-06-21 20:51:31,303 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2024-06-21 20:51:31,304 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 1076 flow [2024-06-21 20:51:31,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:31,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:31,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:31,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 20:51:31,304 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)] === [2024-06-21 20:51:31,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:31,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1883468940, now seen corresponding path program 4 times [2024-06-21 20:51:31,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:31,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080259650] [2024-06-21 20:51:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:31,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:31,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:31,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080259650] [2024-06-21 20:51:31,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080259650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:31,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:31,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:31,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297828915] [2024-06-21 20:51:31,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:31,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:31,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:31,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:31,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:31,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 1076 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:31,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:31,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:31,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:32,144 INFO L124 PetriNetUnfolderBase]: 314/559 cut-off events. [2024-06-21 20:51:32,144 INFO L125 PetriNetUnfolderBase]: For 16454/16454 co-relation queries the response was YES. [2024-06-21 20:51:32,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3488 conditions, 559 events. 314/559 cut-off events. For 16454/16454 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2292 event pairs, 50 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3422. Up to 479 conditions per place. [2024-06-21 20:51:32,147 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 101 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2024-06-21 20:51:32,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 130 transitions, 1475 flow [2024-06-21 20:51:32,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 20:51:32,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-21 20:51:32,154 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 1076 flow. Second operand 9 states and 98 transitions. [2024-06-21 20:51:32,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 130 transitions, 1475 flow [2024-06-21 20:51:32,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 130 transitions, 1420 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:32,180 INFO L231 Difference]: Finished difference. Result has 136 places, 116 transitions, 1119 flow [2024-06-21 20:51:32,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1119, PETRI_PLACES=136, PETRI_TRANSITIONS=116} [2024-06-21 20:51:32,181 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 107 predicate places. [2024-06-21 20:51:32,181 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 116 transitions, 1119 flow [2024-06-21 20:51:32,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:32,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:32,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:32,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 20:51:32,181 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)] === [2024-06-21 20:51:32,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:32,182 INFO L85 PathProgramCache]: Analyzing trace with hash 933005186, now seen corresponding path program 5 times [2024-06-21 20:51:32,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:32,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429060811] [2024-06-21 20:51:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:32,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:32,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:32,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429060811] [2024-06-21 20:51:32,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429060811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:32,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:32,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:32,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765016631] [2024-06-21 20:51:32,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:32,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:32,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:32,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:32,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:32,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:32,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 116 transitions, 1119 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:32,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:32,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:32,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:33,083 INFO L124 PetriNetUnfolderBase]: 336/595 cut-off events. [2024-06-21 20:51:33,083 INFO L125 PetriNetUnfolderBase]: For 20259/20259 co-relation queries the response was YES. [2024-06-21 20:51:33,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3850 conditions, 595 events. 336/595 cut-off events. For 20259/20259 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2469 event pairs, 60 based on Foata normal form. 4/598 useless extension candidates. Maximal degree in co-relation 3783. Up to 541 conditions per place. [2024-06-21 20:51:33,087 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 112 selfloop transitions, 19 changer transitions 0/133 dead transitions. [2024-06-21 20:51:33,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 133 transitions, 1583 flow [2024-06-21 20:51:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-21 20:51:33,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-21 20:51:33,098 INFO L175 Difference]: Start difference. First operand has 136 places, 116 transitions, 1119 flow. Second operand 9 states and 93 transitions. [2024-06-21 20:51:33,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 133 transitions, 1583 flow [2024-06-21 20:51:33,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 133 transitions, 1512 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:33,128 INFO L231 Difference]: Finished difference. Result has 139 places, 121 transitions, 1186 flow [2024-06-21 20:51:33,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1186, PETRI_PLACES=139, PETRI_TRANSITIONS=121} [2024-06-21 20:51:33,129 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-06-21 20:51:33,129 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 121 transitions, 1186 flow [2024-06-21 20:51:33,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:33,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:33,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:33,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 20:51:33,130 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)] === [2024-06-21 20:51:33,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1154419586, now seen corresponding path program 6 times [2024-06-21 20:51:33,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:33,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991324934] [2024-06-21 20:51:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:33,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:33,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991324934] [2024-06-21 20:51:33,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991324934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:33,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:33,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:33,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924077870] [2024-06-21 20:51:33,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:33,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:33,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:33,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:33,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 121 transitions, 1186 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:33,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:33,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:33,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:33,990 INFO L124 PetriNetUnfolderBase]: 388/678 cut-off events. [2024-06-21 20:51:33,990 INFO L125 PetriNetUnfolderBase]: For 26920/26920 co-relation queries the response was YES. [2024-06-21 20:51:33,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 678 events. 388/678 cut-off events. For 26920/26920 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2896 event pairs, 64 based on Foata normal form. 4/681 useless extension candidates. Maximal degree in co-relation 4703. Up to 453 conditions per place. [2024-06-21 20:51:33,994 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 99 selfloop transitions, 45 changer transitions 0/146 dead transitions. [2024-06-21 20:51:33,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 146 transitions, 1922 flow [2024-06-21 20:51:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 20:51:33,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 20:51:33,995 INFO L175 Difference]: Start difference. First operand has 139 places, 121 transitions, 1186 flow. Second operand 9 states and 105 transitions. [2024-06-21 20:51:33,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 146 transitions, 1922 flow [2024-06-21 20:51:34,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 146 transitions, 1852 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-21 20:51:34,031 INFO L231 Difference]: Finished difference. Result has 143 places, 128 transitions, 1356 flow [2024-06-21 20:51:34,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1356, PETRI_PLACES=143, PETRI_TRANSITIONS=128} [2024-06-21 20:51:34,032 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2024-06-21 20:51:34,032 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 1356 flow [2024-06-21 20:51:34,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:34,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:34,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:34,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 20:51:34,032 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)] === [2024-06-21 20:51:34,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:34,032 INFO L85 PathProgramCache]: Analyzing trace with hash 926511926, now seen corresponding path program 7 times [2024-06-21 20:51:34,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:34,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517770469] [2024-06-21 20:51:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:34,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:34,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:34,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517770469] [2024-06-21 20:51:34,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517770469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:34,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:34,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:34,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124277627] [2024-06-21 20:51:34,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:34,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:34,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:34,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:34,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:34,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:34,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 128 transitions, 1356 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:34,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:34,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:34,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:34,837 INFO L124 PetriNetUnfolderBase]: 404/704 cut-off events. [2024-06-21 20:51:34,838 INFO L125 PetriNetUnfolderBase]: For 29223/29223 co-relation queries the response was YES. [2024-06-21 20:51:34,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5165 conditions, 704 events. 404/704 cut-off events. For 29223/29223 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3038 event pairs, 64 based on Foata normal form. 2/705 useless extension candidates. Maximal degree in co-relation 5095. Up to 611 conditions per place. [2024-06-21 20:51:34,842 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 115 selfloop transitions, 29 changer transitions 0/146 dead transitions. [2024-06-21 20:51:34,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 146 transitions, 1940 flow [2024-06-21 20:51:34,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 20:51:34,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-21 20:51:34,851 INFO L175 Difference]: Start difference. First operand has 143 places, 128 transitions, 1356 flow. Second operand 9 states and 98 transitions. [2024-06-21 20:51:34,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 146 transitions, 1940 flow [2024-06-21 20:51:34,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 146 transitions, 1832 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-21 20:51:34,891 INFO L231 Difference]: Finished difference. Result has 148 places, 133 transitions, 1427 flow [2024-06-21 20:51:34,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1427, PETRI_PLACES=148, PETRI_TRANSITIONS=133} [2024-06-21 20:51:34,893 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2024-06-21 20:51:34,893 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 133 transitions, 1427 flow [2024-06-21 20:51:34,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:34,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:34,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:34,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 20:51:34,893 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)] === [2024-06-21 20:51:34,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1552620190, now seen corresponding path program 8 times [2024-06-21 20:51:34,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:34,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873607169] [2024-06-21 20:51:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:34,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:35,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873607169] [2024-06-21 20:51:35,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873607169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:35,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:35,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:35,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493887169] [2024-06-21 20:51:35,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:35,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:35,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:35,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:35,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:35,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:35,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 133 transitions, 1427 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:35,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:35,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:35,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:35,726 INFO L124 PetriNetUnfolderBase]: 400/698 cut-off events. [2024-06-21 20:51:35,726 INFO L125 PetriNetUnfolderBase]: For 28788/28788 co-relation queries the response was YES. [2024-06-21 20:51:35,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4981 conditions, 698 events. 400/698 cut-off events. For 28788/28788 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2999 event pairs, 61 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 4909. Up to 463 conditions per place. [2024-06-21 20:51:35,731 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 96 selfloop transitions, 52 changer transitions 0/150 dead transitions. [2024-06-21 20:51:35,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 150 transitions, 1979 flow [2024-06-21 20:51:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 20:51:35,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3814814814814815 [2024-06-21 20:51:35,732 INFO L175 Difference]: Start difference. First operand has 148 places, 133 transitions, 1427 flow. Second operand 9 states and 103 transitions. [2024-06-21 20:51:35,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 150 transitions, 1979 flow [2024-06-21 20:51:35,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 150 transitions, 1838 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-21 20:51:35,775 INFO L231 Difference]: Finished difference. Result has 149 places, 135 transitions, 1441 flow [2024-06-21 20:51:35,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1441, PETRI_PLACES=149, PETRI_TRANSITIONS=135} [2024-06-21 20:51:35,776 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2024-06-21 20:51:35,776 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 135 transitions, 1441 flow [2024-06-21 20:51:35,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:35,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:35,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:35,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 20:51:35,777 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)] === [2024-06-21 20:51:35,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:35,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1324725798, now seen corresponding path program 2 times [2024-06-21 20:51:35,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:35,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346208142] [2024-06-21 20:51:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:35,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:36,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:36,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346208142] [2024-06-21 20:51:36,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346208142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:36,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:36,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:51:36,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416677869] [2024-06-21 20:51:36,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:36,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:51:36,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:51:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:51:36,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:36,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 135 transitions, 1441 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) [2024-06-21 20:51:36,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:36,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:36,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:36,584 INFO L124 PetriNetUnfolderBase]: 398/695 cut-off events. [2024-06-21 20:51:36,585 INFO L125 PetriNetUnfolderBase]: For 28145/28145 co-relation queries the response was YES. [2024-06-21 20:51:36,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4917 conditions, 695 events. 398/695 cut-off events. For 28145/28145 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2986 event pairs, 68 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 4846. Up to 653 conditions per place. [2024-06-21 20:51:36,590 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 119 selfloop transitions, 21 changer transitions 0/142 dead transitions. [2024-06-21 20:51:36,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 142 transitions, 1737 flow [2024-06-21 20:51:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-21 20:51:36,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-21 20:51:36,605 INFO L175 Difference]: Start difference. First operand has 149 places, 135 transitions, 1441 flow. Second operand 8 states and 81 transitions. [2024-06-21 20:51:36,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 142 transitions, 1737 flow [2024-06-21 20:51:36,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 142 transitions, 1603 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:36,646 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 1355 flow [2024-06-21 20:51:36,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1355, PETRI_PLACES=151, PETRI_TRANSITIONS=135} [2024-06-21 20:51:36,647 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2024-06-21 20:51:36,647 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 1355 flow [2024-06-21 20:51:36,647 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) [2024-06-21 20:51:36,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:36,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:36,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 20:51:36,647 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)] === [2024-06-21 20:51:36,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:36,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2049114584, now seen corresponding path program 9 times [2024-06-21 20:51:36,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:36,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896873374] [2024-06-21 20:51:36,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:36,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:37,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:37,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896873374] [2024-06-21 20:51:37,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896873374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:37,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:37,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:37,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393800081] [2024-06-21 20:51:37,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:37,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:37,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:37,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:37,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:37,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:37,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 135 transitions, 1355 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:37,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:37,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:37,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:37,464 INFO L124 PetriNetUnfolderBase]: 390/683 cut-off events. [2024-06-21 20:51:37,464 INFO L125 PetriNetUnfolderBase]: For 28217/28217 co-relation queries the response was YES. [2024-06-21 20:51:37,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4560 conditions, 683 events. 390/683 cut-off events. For 28217/28217 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2940 event pairs, 61 based on Foata normal form. 4/686 useless extension candidates. Maximal degree in co-relation 4488. Up to 600 conditions per place. [2024-06-21 20:51:37,469 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 117 selfloop transitions, 28 changer transitions 0/147 dead transitions. [2024-06-21 20:51:37,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 147 transitions, 1757 flow [2024-06-21 20:51:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 20:51:37,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-21 20:51:37,477 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 1355 flow. Second operand 9 states and 96 transitions. [2024-06-21 20:51:37,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 147 transitions, 1757 flow [2024-06-21 20:51:37,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 147 transitions, 1655 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:37,523 INFO L231 Difference]: Finished difference. Result has 153 places, 135 transitions, 1316 flow [2024-06-21 20:51:37,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1316, PETRI_PLACES=153, PETRI_TRANSITIONS=135} [2024-06-21 20:51:37,524 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2024-06-21 20:51:37,524 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 135 transitions, 1316 flow [2024-06-21 20:51:37,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:37,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:37,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:37,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 20:51:37,525 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)] === [2024-06-21 20:51:37,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1324541100, now seen corresponding path program 4 times [2024-06-21 20:51:37,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:37,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511115788] [2024-06-21 20:51:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:37,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:38,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:38,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511115788] [2024-06-21 20:51:38,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511115788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:38,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:38,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:38,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586205891] [2024-06-21 20:51:38,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:38,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:38,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:38,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:38,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:38,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:38,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 135 transitions, 1316 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:38,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:38,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:38,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:38,399 INFO L124 PetriNetUnfolderBase]: 394/693 cut-off events. [2024-06-21 20:51:38,399 INFO L125 PetriNetUnfolderBase]: For 28341/28341 co-relation queries the response was YES. [2024-06-21 20:51:38,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 693 events. 394/693 cut-off events. For 28341/28341 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3015 event pairs, 62 based on Foata normal form. 2/694 useless extension candidates. Maximal degree in co-relation 4517. Up to 588 conditions per place. [2024-06-21 20:51:38,403 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 111 selfloop transitions, 33 changer transitions 0/146 dead transitions. [2024-06-21 20:51:38,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 146 transitions, 1650 flow [2024-06-21 20:51:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:51:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:51:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-21 20:51:38,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 20:51:38,405 INFO L175 Difference]: Start difference. First operand has 153 places, 135 transitions, 1316 flow. Second operand 8 states and 85 transitions. [2024-06-21 20:51:38,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 146 transitions, 1650 flow [2024-06-21 20:51:38,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 146 transitions, 1596 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:38,447 INFO L231 Difference]: Finished difference. Result has 154 places, 136 transitions, 1354 flow [2024-06-21 20:51:38,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1354, PETRI_PLACES=154, PETRI_TRANSITIONS=136} [2024-06-21 20:51:38,448 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2024-06-21 20:51:38,448 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 136 transitions, 1354 flow [2024-06-21 20:51:38,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:38,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:38,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:38,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 20:51:38,448 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)] === [2024-06-21 20:51:38,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:38,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1324546060, now seen corresponding path program 10 times [2024-06-21 20:51:38,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:38,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501378334] [2024-06-21 20:51:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:39,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:39,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501378334] [2024-06-21 20:51:39,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501378334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:39,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:39,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:39,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646990100] [2024-06-21 20:51:39,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:39,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:39,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:39,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:39,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:39,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:39,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 136 transitions, 1354 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:39,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:39,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:39,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:39,259 INFO L124 PetriNetUnfolderBase]: 400/703 cut-off events. [2024-06-21 20:51:39,259 INFO L125 PetriNetUnfolderBase]: For 30076/30076 co-relation queries the response was YES. [2024-06-21 20:51:39,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4731 conditions, 703 events. 400/703 cut-off events. For 30076/30076 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3063 event pairs, 62 based on Foata normal form. 2/704 useless extension candidates. Maximal degree in co-relation 4657. Up to 588 conditions per place. [2024-06-21 20:51:39,264 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 112 selfloop transitions, 36 changer transitions 0/150 dead transitions. [2024-06-21 20:51:39,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 150 transitions, 1734 flow [2024-06-21 20:51:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-21 20:51:39,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-21 20:51:39,265 INFO L175 Difference]: Start difference. First operand has 154 places, 136 transitions, 1354 flow. Second operand 9 states and 95 transitions. [2024-06-21 20:51:39,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 150 transitions, 1734 flow [2024-06-21 20:51:39,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 150 transitions, 1652 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:39,310 INFO L231 Difference]: Finished difference. Result has 157 places, 138 transitions, 1403 flow [2024-06-21 20:51:39,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1403, PETRI_PLACES=157, PETRI_TRANSITIONS=138} [2024-06-21 20:51:39,310 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 128 predicate places. [2024-06-21 20:51:39,311 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 138 transitions, 1403 flow [2024-06-21 20:51:39,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:39,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:39,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:39,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 20:51:39,311 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)] === [2024-06-21 20:51:39,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2104187210, now seen corresponding path program 5 times [2024-06-21 20:51:39,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:39,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030789361] [2024-06-21 20:51:39,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:39,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:39,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:39,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:39,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030789361] [2024-06-21 20:51:39,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030789361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:39,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:39,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:39,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599317869] [2024-06-21 20:51:39,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:39,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:39,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:39,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:39,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:40,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:40,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 138 transitions, 1403 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:40,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:40,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:40,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:40,230 INFO L124 PetriNetUnfolderBase]: 421/739 cut-off events. [2024-06-21 20:51:40,230 INFO L125 PetriNetUnfolderBase]: For 31556/31556 co-relation queries the response was YES. [2024-06-21 20:51:40,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4983 conditions, 739 events. 421/739 cut-off events. For 31556/31556 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3279 event pairs, 64 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4908. Up to 665 conditions per place. [2024-06-21 20:51:40,235 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 134 selfloop transitions, 26 changer transitions 0/162 dead transitions. [2024-06-21 20:51:40,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 162 transitions, 1874 flow [2024-06-21 20:51:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 20:51:40,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-21 20:51:40,236 INFO L175 Difference]: Start difference. First operand has 157 places, 138 transitions, 1403 flow. Second operand 9 states and 96 transitions. [2024-06-21 20:51:40,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 162 transitions, 1874 flow [2024-06-21 20:51:40,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 162 transitions, 1745 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:40,286 INFO L231 Difference]: Finished difference. Result has 160 places, 146 transitions, 1453 flow [2024-06-21 20:51:40,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1453, PETRI_PLACES=160, PETRI_TRANSITIONS=146} [2024-06-21 20:51:40,286 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2024-06-21 20:51:40,286 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 1453 flow [2024-06-21 20:51:40,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:40,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:40,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:40,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 20:51:40,287 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)] === [2024-06-21 20:51:40,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:40,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1575320502, now seen corresponding path program 6 times [2024-06-21 20:51:40,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:40,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296334948] [2024-06-21 20:51:40,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:40,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:41,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:41,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296334948] [2024-06-21 20:51:41,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296334948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:41,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:41,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:41,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462162460] [2024-06-21 20:51:41,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:41,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:41,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:41,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:41,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:41,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:41,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 146 transitions, 1453 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:41,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:41,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:41,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:41,361 INFO L124 PetriNetUnfolderBase]: 418/734 cut-off events. [2024-06-21 20:51:41,361 INFO L125 PetriNetUnfolderBase]: For 30704/30704 co-relation queries the response was YES. [2024-06-21 20:51:41,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 734 events. 418/734 cut-off events. For 30704/30704 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3244 event pairs, 63 based on Foata normal form. 2/735 useless extension candidates. Maximal degree in co-relation 4741. Up to 660 conditions per place. [2024-06-21 20:51:41,366 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 135 selfloop transitions, 25 changer transitions 0/162 dead transitions. [2024-06-21 20:51:41,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 162 transitions, 1821 flow [2024-06-21 20:51:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 20:51:41,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-21 20:51:41,367 INFO L175 Difference]: Start difference. First operand has 160 places, 146 transitions, 1453 flow. Second operand 9 states and 97 transitions. [2024-06-21 20:51:41,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 162 transitions, 1821 flow [2024-06-21 20:51:41,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 162 transitions, 1746 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:41,420 INFO L231 Difference]: Finished difference. Result has 163 places, 146 transitions, 1433 flow [2024-06-21 20:51:41,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1433, PETRI_PLACES=163, PETRI_TRANSITIONS=146} [2024-06-21 20:51:41,420 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-21 20:51:41,420 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 146 transitions, 1433 flow [2024-06-21 20:51:41,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:41,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:41,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:41,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 20:51:41,421 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)] === [2024-06-21 20:51:41,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1457227862, now seen corresponding path program 11 times [2024-06-21 20:51:41,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:41,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533662137] [2024-06-21 20:51:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:41,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:42,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:42,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533662137] [2024-06-21 20:51:42,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533662137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:42,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:42,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745587359] [2024-06-21 20:51:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:42,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:42,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:42,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:42,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:42,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 146 transitions, 1433 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:42,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:42,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:42,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:42,448 INFO L124 PetriNetUnfolderBase]: 492/856 cut-off events. [2024-06-21 20:51:42,448 INFO L125 PetriNetUnfolderBase]: For 36391/36391 co-relation queries the response was YES. [2024-06-21 20:51:42,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5603 conditions, 856 events. 492/856 cut-off events. For 36391/36391 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3924 event pairs, 73 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 5526. Up to 659 conditions per place. [2024-06-21 20:51:42,454 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 141 selfloop transitions, 47 changer transitions 0/190 dead transitions. [2024-06-21 20:51:42,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 190 transitions, 2229 flow [2024-06-21 20:51:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:51:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:51:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 20:51:42,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-21 20:51:42,455 INFO L175 Difference]: Start difference. First operand has 163 places, 146 transitions, 1433 flow. Second operand 10 states and 114 transitions. [2024-06-21 20:51:42,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 190 transitions, 2229 flow [2024-06-21 20:51:42,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 190 transitions, 2089 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-21 20:51:42,516 INFO L231 Difference]: Finished difference. Result has 165 places, 165 transitions, 1674 flow [2024-06-21 20:51:42,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1674, PETRI_PLACES=165, PETRI_TRANSITIONS=165} [2024-06-21 20:51:42,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 136 predicate places. [2024-06-21 20:51:42,517 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 165 transitions, 1674 flow [2024-06-21 20:51:42,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:42,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:42,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:42,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 20:51:42,518 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)] === [2024-06-21 20:51:42,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:42,518 INFO L85 PathProgramCache]: Analyzing trace with hash 333171802, now seen corresponding path program 1 times [2024-06-21 20:51:42,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:42,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392990201] [2024-06-21 20:51:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:42,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:43,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:43,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392990201] [2024-06-21 20:51:43,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392990201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:43,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:43,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:43,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844014327] [2024-06-21 20:51:43,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:43,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:43,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:43,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:43,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:43,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:43,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 165 transitions, 1674 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:43,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:43,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:43,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:43,548 INFO L124 PetriNetUnfolderBase]: 496/864 cut-off events. [2024-06-21 20:51:43,548 INFO L125 PetriNetUnfolderBase]: For 37994/37994 co-relation queries the response was YES. [2024-06-21 20:51:43,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5789 conditions, 864 events. 496/864 cut-off events. For 37994/37994 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3988 event pairs, 71 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 5713. Up to 767 conditions per place. [2024-06-21 20:51:43,554 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 156 selfloop transitions, 23 changer transitions 0/181 dead transitions. [2024-06-21 20:51:43,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 181 transitions, 2084 flow [2024-06-21 20:51:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-21 20:51:43,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-21 20:51:43,555 INFO L175 Difference]: Start difference. First operand has 165 places, 165 transitions, 1674 flow. Second operand 9 states and 92 transitions. [2024-06-21 20:51:43,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 181 transitions, 2084 flow [2024-06-21 20:51:43,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 181 transitions, 1990 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:43,621 INFO L231 Difference]: Finished difference. Result has 167 places, 166 transitions, 1648 flow [2024-06-21 20:51:43,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1648, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2024-06-21 20:51:43,621 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-21 20:51:43,621 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 1648 flow [2024-06-21 20:51:43,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:43,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:43,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:43,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 20:51:43,622 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)] === [2024-06-21 20:51:43,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:43,622 INFO L85 PathProgramCache]: Analyzing trace with hash 335049627, now seen corresponding path program 1 times [2024-06-21 20:51:43,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:43,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366722256] [2024-06-21 20:51:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:43,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:44,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:44,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366722256] [2024-06-21 20:51:44,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366722256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:44,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:44,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:44,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210395644] [2024-06-21 20:51:44,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:44,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:44,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:44,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:44,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:44,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 1648 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:44,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:44,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:44,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:44,817 INFO L124 PetriNetUnfolderBase]: 492/858 cut-off events. [2024-06-21 20:51:44,817 INFO L125 PetriNetUnfolderBase]: For 37248/37248 co-relation queries the response was YES. [2024-06-21 20:51:44,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5610 conditions, 858 events. 492/858 cut-off events. For 37248/37248 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3970 event pairs, 67 based on Foata normal form. 2/859 useless extension candidates. Maximal degree in co-relation 5534. Up to 724 conditions per place. [2024-06-21 20:51:44,823 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 138 selfloop transitions, 44 changer transitions 0/184 dead transitions. [2024-06-21 20:51:44,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 184 transitions, 2143 flow [2024-06-21 20:51:44,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 20:51:44,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-21 20:51:44,824 INFO L175 Difference]: Start difference. First operand has 167 places, 166 transitions, 1648 flow. Second operand 9 states and 96 transitions. [2024-06-21 20:51:44,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 184 transitions, 2143 flow [2024-06-21 20:51:44,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 184 transitions, 2085 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:44,896 INFO L231 Difference]: Finished difference. Result has 169 places, 169 transitions, 1783 flow [2024-06-21 20:51:44,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1783, PETRI_PLACES=169, PETRI_TRANSITIONS=169} [2024-06-21 20:51:44,897 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-21 20:51:44,897 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 169 transitions, 1783 flow [2024-06-21 20:51:44,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:44,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:44,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:44,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 20:51:44,897 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)] === [2024-06-21 20:51:44,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:44,897 INFO L85 PathProgramCache]: Analyzing trace with hash 335049472, now seen corresponding path program 2 times [2024-06-21 20:51:44,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:44,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355460843] [2024-06-21 20:51:44,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:44,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:45,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355460843] [2024-06-21 20:51:45,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355460843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:45,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:45,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:45,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981209878] [2024-06-21 20:51:45,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:45,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:45,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:45,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:45,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:45,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:45,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 169 transitions, 1783 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:45,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:45,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:45,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:46,079 INFO L124 PetriNetUnfolderBase]: 496/866 cut-off events. [2024-06-21 20:51:46,079 INFO L125 PetriNetUnfolderBase]: For 38725/38725 co-relation queries the response was YES. [2024-06-21 20:51:46,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 866 events. 496/866 cut-off events. For 38725/38725 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4019 event pairs, 71 based on Foata normal form. 2/867 useless extension candidates. Maximal degree in co-relation 5688. Up to 742 conditions per place. [2024-06-21 20:51:46,085 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 144 selfloop transitions, 39 changer transitions 0/185 dead transitions. [2024-06-21 20:51:46,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 185 transitions, 2207 flow [2024-06-21 20:51:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-21 20:51:46,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-21 20:51:46,086 INFO L175 Difference]: Start difference. First operand has 169 places, 169 transitions, 1783 flow. Second operand 9 states and 95 transitions. [2024-06-21 20:51:46,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 185 transitions, 2207 flow [2024-06-21 20:51:46,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 185 transitions, 2055 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:46,160 INFO L231 Difference]: Finished difference. Result has 171 places, 170 transitions, 1736 flow [2024-06-21 20:51:46,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1736, PETRI_PLACES=171, PETRI_TRANSITIONS=170} [2024-06-21 20:51:46,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-06-21 20:51:46,161 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 170 transitions, 1736 flow [2024-06-21 20:51:46,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:46,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:46,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:46,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 20:51:46,161 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)] === [2024-06-21 20:51:46,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:46,162 INFO L85 PathProgramCache]: Analyzing trace with hash 253988486, now seen corresponding path program 3 times [2024-06-21 20:51:46,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:46,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581207437] [2024-06-21 20:51:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:46,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:47,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:47,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581207437] [2024-06-21 20:51:47,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581207437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:47,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:47,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:47,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734142701] [2024-06-21 20:51:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:47,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:47,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:47,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 170 transitions, 1736 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:47,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:47,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:47,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:47,527 INFO L124 PetriNetUnfolderBase]: 500/874 cut-off events. [2024-06-21 20:51:47,527 INFO L125 PetriNetUnfolderBase]: For 40740/40740 co-relation queries the response was YES. [2024-06-21 20:51:47,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 874 events. 500/874 cut-off events. For 40740/40740 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4084 event pairs, 74 based on Foata normal form. 2/875 useless extension candidates. Maximal degree in co-relation 5680. Up to 792 conditions per place. [2024-06-21 20:51:47,533 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 158 selfloop transitions, 26 changer transitions 0/186 dead transitions. [2024-06-21 20:51:47,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 186 transitions, 2168 flow [2024-06-21 20:51:47,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:51:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:51:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 20:51:47,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-21 20:51:47,534 INFO L175 Difference]: Start difference. First operand has 171 places, 170 transitions, 1736 flow. Second operand 10 states and 102 transitions. [2024-06-21 20:51:47,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 186 transitions, 2168 flow [2024-06-21 20:51:47,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 186 transitions, 2079 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:47,607 INFO L231 Difference]: Finished difference. Result has 174 places, 171 transitions, 1725 flow [2024-06-21 20:51:47,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1725, PETRI_PLACES=174, PETRI_TRANSITIONS=171} [2024-06-21 20:51:47,607 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-06-21 20:51:47,607 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 171 transitions, 1725 flow [2024-06-21 20:51:47,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:47,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:47,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:47,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 20:51:47,608 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)] === [2024-06-21 20:51:47,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash 421891384, now seen corresponding path program 1 times [2024-06-21 20:51:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:47,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413936127] [2024-06-21 20:51:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:47,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:48,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:48,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413936127] [2024-06-21 20:51:48,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413936127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:48,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:48,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996823106] [2024-06-21 20:51:48,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:48,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:48,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:48,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:48,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:48,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 171 transitions, 1725 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:48,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:48,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:48,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:48,781 INFO L124 PetriNetUnfolderBase]: 512/894 cut-off events. [2024-06-21 20:51:48,782 INFO L125 PetriNetUnfolderBase]: For 44931/44931 co-relation queries the response was YES. [2024-06-21 20:51:48,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5886 conditions, 894 events. 512/894 cut-off events. For 44931/44931 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4187 event pairs, 66 based on Foata normal form. 4/897 useless extension candidates. Maximal degree in co-relation 5807. Up to 767 conditions per place. [2024-06-21 20:51:48,789 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 153 selfloop transitions, 36 changer transitions 0/191 dead transitions. [2024-06-21 20:51:48,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 191 transitions, 2245 flow [2024-06-21 20:51:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 20:51:48,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-21 20:51:48,790 INFO L175 Difference]: Start difference. First operand has 174 places, 171 transitions, 1725 flow. Second operand 9 states and 97 transitions. [2024-06-21 20:51:48,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 191 transitions, 2245 flow [2024-06-21 20:51:48,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 191 transitions, 2175 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 20:51:48,873 INFO L231 Difference]: Finished difference. Result has 175 places, 175 transitions, 1836 flow [2024-06-21 20:51:48,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1836, PETRI_PLACES=175, PETRI_TRANSITIONS=175} [2024-06-21 20:51:48,874 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-21 20:51:48,874 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 175 transitions, 1836 flow [2024-06-21 20:51:48,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:48,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:48,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:48,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 20:51:48,875 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)] === [2024-06-21 20:51:48,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1741802200, now seen corresponding path program 2 times [2024-06-21 20:51:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:48,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22142314] [2024-06-21 20:51:48,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:48,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:49,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:49,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22142314] [2024-06-21 20:51:49,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22142314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:49,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:49,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:49,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591144016] [2024-06-21 20:51:49,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:49,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:49,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:49,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:49,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:49,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:49,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 175 transitions, 1836 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:49,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:49,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:49,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:49,878 INFO L124 PetriNetUnfolderBase]: 524/914 cut-off events. [2024-06-21 20:51:49,878 INFO L125 PetriNetUnfolderBase]: For 47018/47018 co-relation queries the response was YES. [2024-06-21 20:51:49,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 914 events. 524/914 cut-off events. For 47018/47018 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4318 event pairs, 83 based on Foata normal form. 4/917 useless extension candidates. Maximal degree in co-relation 6027. Up to 778 conditions per place. [2024-06-21 20:51:49,885 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 153 selfloop transitions, 40 changer transitions 0/195 dead transitions. [2024-06-21 20:51:49,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 195 transitions, 2446 flow [2024-06-21 20:51:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:51:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:51:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:51:49,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-21 20:51:49,886 INFO L175 Difference]: Start difference. First operand has 175 places, 175 transitions, 1836 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:51:49,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 195 transitions, 2446 flow [2024-06-21 20:51:49,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 195 transitions, 2317 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:49,970 INFO L231 Difference]: Finished difference. Result has 178 places, 179 transitions, 1873 flow [2024-06-21 20:51:49,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1873, PETRI_PLACES=178, PETRI_TRANSITIONS=179} [2024-06-21 20:51:49,971 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2024-06-21 20:51:49,971 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 179 transitions, 1873 flow [2024-06-21 20:51:49,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:49,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:49,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:49,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 20:51:49,971 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)] === [2024-06-21 20:51:49,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash 102585941, now seen corresponding path program 1 times [2024-06-21 20:51:49,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:49,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796382484] [2024-06-21 20:51:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:49,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:50,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:50,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796382484] [2024-06-21 20:51:50,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796382484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:50,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:50,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:51:50,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151954633] [2024-06-21 20:51:50,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:50,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:51:50,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:51:50,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:51:50,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:50,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 179 transitions, 1873 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) [2024-06-21 20:51:50,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:50,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:50,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:51,024 INFO L124 PetriNetUnfolderBase]: 528/922 cut-off events. [2024-06-21 20:51:51,024 INFO L125 PetriNetUnfolderBase]: For 46038/46038 co-relation queries the response was YES. [2024-06-21 20:51:51,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6140 conditions, 922 events. 528/922 cut-off events. For 46038/46038 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4367 event pairs, 89 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 6059. Up to 882 conditions per place. [2024-06-21 20:51:51,031 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 171 selfloop transitions, 19 changer transitions 0/192 dead transitions. [2024-06-21 20:51:51,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 192 transitions, 2312 flow [2024-06-21 20:51:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:51:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:51:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-21 20:51:51,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-21 20:51:51,033 INFO L175 Difference]: Start difference. First operand has 178 places, 179 transitions, 1873 flow. Second operand 10 states and 96 transitions. [2024-06-21 20:51:51,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 192 transitions, 2312 flow [2024-06-21 20:51:51,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 192 transitions, 2182 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 20:51:51,123 INFO L231 Difference]: Finished difference. Result has 181 places, 181 transitions, 1821 flow [2024-06-21 20:51:51,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1821, PETRI_PLACES=181, PETRI_TRANSITIONS=181} [2024-06-21 20:51:51,124 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2024-06-21 20:51:51,124 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 181 transitions, 1821 flow [2024-06-21 20:51:51,124 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) [2024-06-21 20:51:51,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:51,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:51,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 20:51:51,124 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)] === [2024-06-21 20:51:51,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1747516492, now seen corresponding path program 4 times [2024-06-21 20:51:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:51,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197113415] [2024-06-21 20:51:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:51,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:51,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:51,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197113415] [2024-06-21 20:51:51,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197113415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:51,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:51,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227937411] [2024-06-21 20:51:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:51,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:51,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:51,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:51,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:51,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:51,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 181 transitions, 1821 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:51,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:51,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:51,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:52,190 INFO L124 PetriNetUnfolderBase]: 532/930 cut-off events. [2024-06-21 20:51:52,191 INFO L125 PetriNetUnfolderBase]: For 47457/47457 co-relation queries the response was YES. [2024-06-21 20:51:52,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 930 events. 532/930 cut-off events. For 47457/47457 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4433 event pairs, 67 based on Foata normal form. 2/931 useless extension candidates. Maximal degree in co-relation 6025. Up to 804 conditions per place. [2024-06-21 20:51:52,197 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 152 selfloop transitions, 42 changer transitions 0/196 dead transitions. [2024-06-21 20:51:52,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 196 transitions, 2269 flow [2024-06-21 20:51:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:52,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-21 20:51:52,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-21 20:51:52,198 INFO L175 Difference]: Start difference. First operand has 181 places, 181 transitions, 1821 flow. Second operand 9 states and 95 transitions. [2024-06-21 20:51:52,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 196 transitions, 2269 flow [2024-06-21 20:51:52,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 196 transitions, 2209 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 20:51:52,283 INFO L231 Difference]: Finished difference. Result has 184 places, 182 transitions, 1874 flow [2024-06-21 20:51:52,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1874, PETRI_PLACES=184, PETRI_TRANSITIONS=182} [2024-06-21 20:51:52,283 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-21 20:51:52,284 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 182 transitions, 1874 flow [2024-06-21 20:51:52,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:52,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:52,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:52,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 20:51:52,284 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)] === [2024-06-21 20:51:52,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:52,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1742009962, now seen corresponding path program 5 times [2024-06-21 20:51:52,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:52,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546748264] [2024-06-21 20:51:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:52,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:53,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:53,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546748264] [2024-06-21 20:51:53,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546748264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:53,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:53,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:53,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815456040] [2024-06-21 20:51:53,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:53,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:53,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:53,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:53,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:53,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 182 transitions, 1874 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:53,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:53,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:53,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:53,377 INFO L124 PetriNetUnfolderBase]: 536/938 cut-off events. [2024-06-21 20:51:53,378 INFO L125 PetriNetUnfolderBase]: For 49377/49377 co-relation queries the response was YES. [2024-06-21 20:51:53,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 938 events. 536/938 cut-off events. For 49377/49377 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4492 event pairs, 95 based on Foata normal form. 2/939 useless extension candidates. Maximal degree in co-relation 6150. Up to 884 conditions per place. [2024-06-21 20:51:53,385 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 171 selfloop transitions, 22 changer transitions 0/195 dead transitions. [2024-06-21 20:51:53,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 195 transitions, 2314 flow [2024-06-21 20:51:53,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-21 20:51:53,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 20:51:53,386 INFO L175 Difference]: Start difference. First operand has 184 places, 182 transitions, 1874 flow. Second operand 9 states and 90 transitions. [2024-06-21 20:51:53,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 195 transitions, 2314 flow [2024-06-21 20:51:53,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 195 transitions, 2213 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:53,488 INFO L231 Difference]: Finished difference. Result has 186 places, 183 transitions, 1848 flow [2024-06-21 20:51:53,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1848, PETRI_PLACES=186, PETRI_TRANSITIONS=183} [2024-06-21 20:51:53,489 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-06-21 20:51:53,489 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 183 transitions, 1848 flow [2024-06-21 20:51:53,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:53,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:53,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:53,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 20:51:53,489 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)] === [2024-06-21 20:51:53,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1742004010, now seen corresponding path program 3 times [2024-06-21 20:51:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:53,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7805772] [2024-06-21 20:51:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:53,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:54,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:54,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7805772] [2024-06-21 20:51:54,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7805772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:54,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:54,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:54,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006984589] [2024-06-21 20:51:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:54,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:54,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:54,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:54,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:54,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:54,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 183 transitions, 1848 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:54,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:54,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:54,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:54,481 INFO L124 PetriNetUnfolderBase]: 528/926 cut-off events. [2024-06-21 20:51:54,481 INFO L125 PetriNetUnfolderBase]: For 47655/47655 co-relation queries the response was YES. [2024-06-21 20:51:54,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5899 conditions, 926 events. 528/926 cut-off events. For 47655/47655 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4426 event pairs, 85 based on Foata normal form. 4/929 useless extension candidates. Maximal degree in co-relation 5814. Up to 796 conditions per place. [2024-06-21 20:51:54,487 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 153 selfloop transitions, 43 changer transitions 0/198 dead transitions. [2024-06-21 20:51:54,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 198 transitions, 2282 flow [2024-06-21 20:51:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:51:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:51:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:51:54,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-21 20:51:54,488 INFO L175 Difference]: Start difference. First operand has 186 places, 183 transitions, 1848 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:51:54,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 198 transitions, 2282 flow [2024-06-21 20:51:54,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 198 transitions, 2175 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:54,583 INFO L231 Difference]: Finished difference. Result has 189 places, 183 transitions, 1835 flow [2024-06-21 20:51:54,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1835, PETRI_PLACES=189, PETRI_TRANSITIONS=183} [2024-06-21 20:51:54,584 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-21 20:51:54,584 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 183 transitions, 1835 flow [2024-06-21 20:51:54,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:54,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:54,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:54,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 20:51:54,584 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)] === [2024-06-21 20:51:54,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1747520212, now seen corresponding path program 6 times [2024-06-21 20:51:54,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:54,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264805952] [2024-06-21 20:51:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:54,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:55,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:55,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264805952] [2024-06-21 20:51:55,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264805952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:55,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:55,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:55,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607896173] [2024-06-21 20:51:55,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:55,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:55,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:55,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:55,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:55,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:55,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 183 transitions, 1835 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:55,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:55,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:55,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:55,665 INFO L124 PetriNetUnfolderBase]: 532/934 cut-off events. [2024-06-21 20:51:55,665 INFO L125 PetriNetUnfolderBase]: For 46145/46145 co-relation queries the response was YES. [2024-06-21 20:51:55,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5974 conditions, 934 events. 532/934 cut-off events. For 46145/46145 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4494 event pairs, 65 based on Foata normal form. 2/935 useless extension candidates. Maximal degree in co-relation 5888. Up to 816 conditions per place. [2024-06-21 20:51:55,672 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 157 selfloop transitions, 39 changer transitions 0/198 dead transitions. [2024-06-21 20:51:55,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 198 transitions, 2289 flow [2024-06-21 20:51:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-21 20:51:55,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-21 20:51:55,673 INFO L175 Difference]: Start difference. First operand has 189 places, 183 transitions, 1835 flow. Second operand 9 states and 94 transitions. [2024-06-21 20:51:55,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 198 transitions, 2289 flow [2024-06-21 20:51:55,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 198 transitions, 2168 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 20:51:55,775 INFO L231 Difference]: Finished difference. Result has 188 places, 184 transitions, 1824 flow [2024-06-21 20:51:55,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1824, PETRI_PLACES=188, PETRI_TRANSITIONS=184} [2024-06-21 20:51:55,775 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-21 20:51:55,775 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 184 transitions, 1824 flow [2024-06-21 20:51:55,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:55,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:55,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:55,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 20:51:55,776 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)] === [2024-06-21 20:51:55,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash -299049642, now seen corresponding path program 4 times [2024-06-21 20:51:55,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:55,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015229204] [2024-06-21 20:51:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:55,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:56,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:56,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015229204] [2024-06-21 20:51:56,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015229204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:56,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:56,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:56,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571944950] [2024-06-21 20:51:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:56,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:56,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:56,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:56,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 184 transitions, 1824 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:56,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:56,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:56,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:57,232 INFO L124 PetriNetUnfolderBase]: 539/946 cut-off events. [2024-06-21 20:51:57,233 INFO L125 PetriNetUnfolderBase]: For 49855/49855 co-relation queries the response was YES. [2024-06-21 20:51:57,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6021 conditions, 946 events. 539/946 cut-off events. For 49855/49855 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4549 event pairs, 67 based on Foata normal form. 4/949 useless extension candidates. Maximal degree in co-relation 5934. Up to 796 conditions per place. [2024-06-21 20:51:57,240 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 153 selfloop transitions, 49 changer transitions 0/204 dead transitions. [2024-06-21 20:51:57,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 204 transitions, 2372 flow [2024-06-21 20:51:57,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:51:57,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:51:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 20:51:57,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 20:51:57,241 INFO L175 Difference]: Start difference. First operand has 188 places, 184 transitions, 1824 flow. Second operand 10 states and 105 transitions. [2024-06-21 20:51:57,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 204 transitions, 2372 flow [2024-06-21 20:51:57,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 204 transitions, 2272 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:57,346 INFO L231 Difference]: Finished difference. Result has 191 places, 188 transitions, 1936 flow [2024-06-21 20:51:57,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1936, PETRI_PLACES=191, PETRI_TRANSITIONS=188} [2024-06-21 20:51:57,346 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-21 20:51:57,346 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 188 transitions, 1936 flow [2024-06-21 20:51:57,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:57,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:57,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:57,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 20:51:57,347 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)] === [2024-06-21 20:51:57,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1342906324, now seen corresponding path program 7 times [2024-06-21 20:51:57,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:57,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708553587] [2024-06-21 20:51:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:57,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:58,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:58,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:58,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708553587] [2024-06-21 20:51:58,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708553587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:58,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:58,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:58,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541681900] [2024-06-21 20:51:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:58,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:58,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:58,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 188 transitions, 1936 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:58,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:58,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:58,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:58,398 INFO L124 PetriNetUnfolderBase]: 543/955 cut-off events. [2024-06-21 20:51:58,398 INFO L125 PetriNetUnfolderBase]: For 48378/48378 co-relation queries the response was YES. [2024-06-21 20:51:58,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6139 conditions, 955 events. 543/955 cut-off events. For 48378/48378 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4647 event pairs, 93 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 6051. Up to 905 conditions per place. [2024-06-21 20:51:58,405 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 176 selfloop transitions, 21 changer transitions 0/199 dead transitions. [2024-06-21 20:51:58,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 199 transitions, 2382 flow [2024-06-21 20:51:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:51:58,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:51:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-21 20:51:58,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-21 20:51:58,406 INFO L175 Difference]: Start difference. First operand has 191 places, 188 transitions, 1936 flow. Second operand 9 states and 89 transitions. [2024-06-21 20:51:58,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 199 transitions, 2382 flow [2024-06-21 20:51:58,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 199 transitions, 2210 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-21 20:51:58,516 INFO L231 Difference]: Finished difference. Result has 192 places, 189 transitions, 1840 flow [2024-06-21 20:51:58,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1840, PETRI_PLACES=192, PETRI_TRANSITIONS=189} [2024-06-21 20:51:58,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-06-21 20:51:58,517 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 189 transitions, 1840 flow [2024-06-21 20:51:58,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:58,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:58,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:58,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 20:51:58,517 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)] === [2024-06-21 20:51:58,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:58,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1342900372, now seen corresponding path program 5 times [2024-06-21 20:51:58,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:58,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69523893] [2024-06-21 20:51:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:58,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:51:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:51:59,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:51:59,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69523893] [2024-06-21 20:51:59,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69523893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:51:59,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:51:59,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:51:59,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961292461] [2024-06-21 20:51:59,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:51:59,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:51:59,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:51:59,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:51:59,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:51:59,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:51:59,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 189 transitions, 1840 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:59,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:51:59,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:51:59,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:51:59,753 INFO L124 PetriNetUnfolderBase]: 549/965 cut-off events. [2024-06-21 20:51:59,753 INFO L125 PetriNetUnfolderBase]: For 49309/49309 co-relation queries the response was YES. [2024-06-21 20:51:59,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6071 conditions, 965 events. 549/965 cut-off events. For 49309/49309 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4710 event pairs, 90 based on Foata normal form. 2/966 useless extension candidates. Maximal degree in co-relation 5982. Up to 876 conditions per place. [2024-06-21 20:51:59,760 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 172 selfloop transitions, 31 changer transitions 0/205 dead transitions. [2024-06-21 20:51:59,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 205 transitions, 2438 flow [2024-06-21 20:51:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:51:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:51:59,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:51:59,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-21 20:51:59,761 INFO L175 Difference]: Start difference. First operand has 192 places, 189 transitions, 1840 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:51:59,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 205 transitions, 2438 flow [2024-06-21 20:51:59,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 205 transitions, 2372 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 20:51:59,886 INFO L231 Difference]: Finished difference. Result has 195 places, 191 transitions, 1877 flow [2024-06-21 20:51:59,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1877, PETRI_PLACES=195, PETRI_TRANSITIONS=191} [2024-06-21 20:51:59,886 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-21 20:51:59,886 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 191 transitions, 1877 flow [2024-06-21 20:51:59,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:51:59,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:51:59,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:51:59,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 20:51:59,887 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)] === [2024-06-21 20:51:59,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:51:59,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1342690843, now seen corresponding path program 2 times [2024-06-21 20:51:59,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:51:59,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984590397] [2024-06-21 20:51:59,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:51:59,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:51:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:00,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:00,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984590397] [2024-06-21 20:52:00,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984590397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:00,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:00,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:52:00,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129539294] [2024-06-21 20:52:00,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:00,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:52:00,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:00,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:52:00,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:52:00,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:00,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 191 transitions, 1877 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) [2024-06-21 20:52:00,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:00,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:00,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:00,823 INFO L124 PetriNetUnfolderBase]: 553/973 cut-off events. [2024-06-21 20:52:00,823 INFO L125 PetriNetUnfolderBase]: For 50760/50760 co-relation queries the response was YES. [2024-06-21 20:52:00,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6138 conditions, 973 events. 553/973 cut-off events. For 50760/50760 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4765 event pairs, 97 based on Foata normal form. 2/974 useless extension candidates. Maximal degree in co-relation 6048. Up to 923 conditions per place. [2024-06-21 20:52:00,831 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 177 selfloop transitions, 22 changer transitions 0/201 dead transitions. [2024-06-21 20:52:00,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 201 transitions, 2315 flow [2024-06-21 20:52:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:52:00,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:52:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-21 20:52:00,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-21 20:52:00,832 INFO L175 Difference]: Start difference. First operand has 195 places, 191 transitions, 1877 flow. Second operand 9 states and 89 transitions. [2024-06-21 20:52:00,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 201 transitions, 2315 flow [2024-06-21 20:52:00,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 201 transitions, 2229 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:00,949 INFO L231 Difference]: Finished difference. Result has 196 places, 192 transitions, 1861 flow [2024-06-21 20:52:00,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1861, PETRI_PLACES=196, PETRI_TRANSITIONS=192} [2024-06-21 20:52:00,949 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 167 predicate places. [2024-06-21 20:52:00,949 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 192 transitions, 1861 flow [2024-06-21 20:52:00,949 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) [2024-06-21 20:52:00,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:00,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:00,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 20:52:00,950 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)] === [2024-06-21 20:52:00,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:00,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1683770302, now seen corresponding path program 6 times [2024-06-21 20:52:00,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:00,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226922809] [2024-06-21 20:52:00,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:00,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:01,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:01,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226922809] [2024-06-21 20:52:01,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226922809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:01,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:01,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:01,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489536533] [2024-06-21 20:52:01,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:01,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:01,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:01,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:01,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:01,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 192 transitions, 1861 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:01,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:01,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:01,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:02,022 INFO L124 PetriNetUnfolderBase]: 549/966 cut-off events. [2024-06-21 20:52:02,022 INFO L125 PetriNetUnfolderBase]: For 48461/48461 co-relation queries the response was YES. [2024-06-21 20:52:02,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5957 conditions, 966 events. 549/966 cut-off events. For 48461/48461 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4727 event pairs, 133 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 5866. Up to 915 conditions per place. [2024-06-21 20:52:02,029 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 183 selfloop transitions, 19 changer transitions 0/204 dead transitions. [2024-06-21 20:52:02,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 204 transitions, 2323 flow [2024-06-21 20:52:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-21 20:52:02,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-21 20:52:02,031 INFO L175 Difference]: Start difference. First operand has 196 places, 192 transitions, 1861 flow. Second operand 10 states and 99 transitions. [2024-06-21 20:52:02,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 204 transitions, 2323 flow [2024-06-21 20:52:02,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 204 transitions, 2247 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 20:52:02,139 INFO L231 Difference]: Finished difference. Result has 199 places, 192 transitions, 1828 flow [2024-06-21 20:52:02,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1828, PETRI_PLACES=199, PETRI_TRANSITIONS=192} [2024-06-21 20:52:02,140 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-21 20:52:02,140 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 192 transitions, 1828 flow [2024-06-21 20:52:02,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:02,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:02,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:02,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 20:52:02,141 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)] === [2024-06-21 20:52:02,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:02,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1143296667, now seen corresponding path program 3 times [2024-06-21 20:52:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:02,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010164286] [2024-06-21 20:52:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:02,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:02,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:02,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010164286] [2024-06-21 20:52:02,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010164286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:02,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:02,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:52:02,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828936802] [2024-06-21 20:52:02,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:02,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:52:02,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:02,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:52:02,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:52:02,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:02,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 192 transitions, 1828 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) [2024-06-21 20:52:02,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:02,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:02,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:03,188 INFO L124 PetriNetUnfolderBase]: 553/974 cut-off events. [2024-06-21 20:52:03,188 INFO L125 PetriNetUnfolderBase]: For 49929/49929 co-relation queries the response was YES. [2024-06-21 20:52:03,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5992 conditions, 974 events. 553/974 cut-off events. For 49929/49929 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4784 event pairs, 135 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 5900. Up to 937 conditions per place. [2024-06-21 20:52:03,196 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 186 selfloop transitions, 15 changer transitions 0/203 dead transitions. [2024-06-21 20:52:03,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 203 transitions, 2302 flow [2024-06-21 20:52:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:52:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:52:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-21 20:52:03,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-21 20:52:03,197 INFO L175 Difference]: Start difference. First operand has 199 places, 192 transitions, 1828 flow. Second operand 9 states and 88 transitions. [2024-06-21 20:52:03,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 203 transitions, 2302 flow [2024-06-21 20:52:03,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 203 transitions, 2252 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 20:52:03,321 INFO L231 Difference]: Finished difference. Result has 199 places, 193 transitions, 1836 flow [2024-06-21 20:52:03,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1836, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2024-06-21 20:52:03,322 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-21 20:52:03,322 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 1836 flow [2024-06-21 20:52:03,322 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) [2024-06-21 20:52:03,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:03,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:03,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 20:52:03,323 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)] === [2024-06-21 20:52:03,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1883179916, now seen corresponding path program 7 times [2024-06-21 20:52:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481270613] [2024-06-21 20:52:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:03,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:04,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:04,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481270613] [2024-06-21 20:52:04,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481270613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:04,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:04,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:04,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244872167] [2024-06-21 20:52:04,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:04,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:04,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:04,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:04,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:04,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:04,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 1836 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:04,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:04,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:04,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:04,595 INFO L124 PetriNetUnfolderBase]: 549/969 cut-off events. [2024-06-21 20:52:04,595 INFO L125 PetriNetUnfolderBase]: For 47535/47535 co-relation queries the response was YES. [2024-06-21 20:52:04,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5837 conditions, 969 events. 549/969 cut-off events. For 47535/47535 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4791 event pairs, 89 based on Foata normal form. 2/970 useless extension candidates. Maximal degree in co-relation 5744. Up to 883 conditions per place. [2024-06-21 20:52:04,602 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 174 selfloop transitions, 30 changer transitions 0/206 dead transitions. [2024-06-21 20:52:04,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 206 transitions, 2280 flow [2024-06-21 20:52:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 20:52:04,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-21 20:52:04,603 INFO L175 Difference]: Start difference. First operand has 199 places, 193 transitions, 1836 flow. Second operand 10 states and 104 transitions. [2024-06-21 20:52:04,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 206 transitions, 2280 flow [2024-06-21 20:52:04,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 206 transitions, 2210 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 20:52:04,718 INFO L231 Difference]: Finished difference. Result has 202 places, 193 transitions, 1831 flow [2024-06-21 20:52:04,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1831, PETRI_PLACES=202, PETRI_TRANSITIONS=193} [2024-06-21 20:52:04,718 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-21 20:52:04,718 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 193 transitions, 1831 flow [2024-06-21 20:52:04,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:04,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:04,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:04,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 20:52:04,719 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)] === [2024-06-21 20:52:04,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:04,719 INFO L85 PathProgramCache]: Analyzing trace with hash 886580676, now seen corresponding path program 8 times [2024-06-21 20:52:04,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:04,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952056273] [2024-06-21 20:52:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:04,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:05,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952056273] [2024-06-21 20:52:05,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952056273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:05,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:05,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592321243] [2024-06-21 20:52:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:05,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:05,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:05,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 193 transitions, 1831 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:05,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:05,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:05,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:05,764 INFO L124 PetriNetUnfolderBase]: 553/977 cut-off events. [2024-06-21 20:52:05,764 INFO L125 PetriNetUnfolderBase]: For 49153/49153 co-relation queries the response was YES. [2024-06-21 20:52:05,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5912 conditions, 977 events. 553/977 cut-off events. For 49153/49153 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4847 event pairs, 89 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 5818. Up to 897 conditions per place. [2024-06-21 20:52:05,771 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 173 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2024-06-21 20:52:05,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 205 transitions, 2295 flow [2024-06-21 20:52:05,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:52:05,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:52:05,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-21 20:52:05,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-21 20:52:05,772 INFO L175 Difference]: Start difference. First operand has 202 places, 193 transitions, 1831 flow. Second operand 9 states and 92 transitions. [2024-06-21 20:52:05,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 205 transitions, 2295 flow [2024-06-21 20:52:05,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 205 transitions, 2217 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 20:52:05,894 INFO L231 Difference]: Finished difference. Result has 201 places, 194 transitions, 1849 flow [2024-06-21 20:52:05,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1849, PETRI_PLACES=201, PETRI_TRANSITIONS=194} [2024-06-21 20:52:05,894 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-21 20:52:05,894 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 194 transitions, 1849 flow [2024-06-21 20:52:05,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:05,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:05,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:05,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 20:52:05,895 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)] === [2024-06-21 20:52:05,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:05,895 INFO L85 PathProgramCache]: Analyzing trace with hash -907670634, now seen corresponding path program 9 times [2024-06-21 20:52:05,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:05,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89823662] [2024-06-21 20:52:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:05,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:06,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:06,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89823662] [2024-06-21 20:52:06,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89823662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:06,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:06,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:06,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278358414] [2024-06-21 20:52:06,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:06,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:06,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:06,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:06,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 194 transitions, 1849 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:06,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:06,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:06,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:07,067 INFO L124 PetriNetUnfolderBase]: 557/985 cut-off events. [2024-06-21 20:52:07,068 INFO L125 PetriNetUnfolderBase]: For 51049/51049 co-relation queries the response was YES. [2024-06-21 20:52:07,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 985 events. 557/985 cut-off events. For 51049/51049 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4891 event pairs, 65 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 5909. Up to 773 conditions per place. [2024-06-21 20:52:07,075 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 150 selfloop transitions, 55 changer transitions 0/207 dead transitions. [2024-06-21 20:52:07,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 207 transitions, 2323 flow [2024-06-21 20:52:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:52:07,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:52:07,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 20:52:07,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-21 20:52:07,076 INFO L175 Difference]: Start difference. First operand has 201 places, 194 transitions, 1849 flow. Second operand 9 states and 97 transitions. [2024-06-21 20:52:07,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 207 transitions, 2323 flow [2024-06-21 20:52:07,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 207 transitions, 2237 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 20:52:07,200 INFO L231 Difference]: Finished difference. Result has 203 places, 195 transitions, 1911 flow [2024-06-21 20:52:07,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1911, PETRI_PLACES=203, PETRI_TRANSITIONS=195} [2024-06-21 20:52:07,201 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 174 predicate places. [2024-06-21 20:52:07,201 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 195 transitions, 1911 flow [2024-06-21 20:52:07,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:07,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:07,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:07,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 20:52:07,202 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)] === [2024-06-21 20:52:07,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:07,202 INFO L85 PathProgramCache]: Analyzing trace with hash -708218742, now seen corresponding path program 8 times [2024-06-21 20:52:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:07,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821089178] [2024-06-21 20:52:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:07,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:07,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821089178] [2024-06-21 20:52:07,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821089178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:07,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:07,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:07,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687181725] [2024-06-21 20:52:07,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:07,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:07,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:07,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:07,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:08,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:08,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 195 transitions, 1911 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:08,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:08,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:08,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:08,251 INFO L124 PetriNetUnfolderBase]: 563/995 cut-off events. [2024-06-21 20:52:08,252 INFO L125 PetriNetUnfolderBase]: For 52379/52379 co-relation queries the response was YES. [2024-06-21 20:52:08,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 995 events. 563/995 cut-off events. For 52379/52379 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4961 event pairs, 92 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6011. Up to 716 conditions per place. [2024-06-21 20:52:08,259 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 142 selfloop transitions, 69 changer transitions 0/213 dead transitions. [2024-06-21 20:52:08,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 213 transitions, 2571 flow [2024-06-21 20:52:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:52:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:52:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 20:52:08,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-21 20:52:08,260 INFO L175 Difference]: Start difference. First operand has 203 places, 195 transitions, 1911 flow. Second operand 11 states and 118 transitions. [2024-06-21 20:52:08,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 213 transitions, 2571 flow [2024-06-21 20:52:08,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 213 transitions, 2433 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 20:52:08,378 INFO L231 Difference]: Finished difference. Result has 207 places, 197 transitions, 1950 flow [2024-06-21 20:52:08,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1950, PETRI_PLACES=207, PETRI_TRANSITIONS=197} [2024-06-21 20:52:08,379 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-21 20:52:08,379 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 197 transitions, 1950 flow [2024-06-21 20:52:08,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:08,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:08,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:08,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 20:52:08,380 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)] === [2024-06-21 20:52:08,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:08,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1888897928, now seen corresponding path program 10 times [2024-06-21 20:52:08,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:08,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140082849] [2024-06-21 20:52:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:08,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:09,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:09,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140082849] [2024-06-21 20:52:09,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140082849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:09,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:09,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:09,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889796121] [2024-06-21 20:52:09,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:09,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:09,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:09,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:09,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:09,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:09,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 197 transitions, 1950 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:09,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:09,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:09,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:09,510 INFO L124 PetriNetUnfolderBase]: 567/1003 cut-off events. [2024-06-21 20:52:09,511 INFO L125 PetriNetUnfolderBase]: For 53752/53752 co-relation queries the response was YES. [2024-06-21 20:52:09,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6207 conditions, 1003 events. 567/1003 cut-off events. For 53752/53752 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5017 event pairs, 70 based on Foata normal form. 2/1004 useless extension candidates. Maximal degree in co-relation 6110. Up to 771 conditions per place. [2024-06-21 20:52:09,518 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 151 selfloop transitions, 58 changer transitions 0/211 dead transitions. [2024-06-21 20:52:09,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 211 transitions, 2436 flow [2024-06-21 20:52:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:52:09,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:52:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 20:52:09,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-21 20:52:09,519 INFO L175 Difference]: Start difference. First operand has 207 places, 197 transitions, 1950 flow. Second operand 9 states and 99 transitions. [2024-06-21 20:52:09,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 211 transitions, 2436 flow [2024-06-21 20:52:09,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 211 transitions, 2274 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 20:52:09,632 INFO L231 Difference]: Finished difference. Result has 207 places, 198 transitions, 1944 flow [2024-06-21 20:52:09,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1944, PETRI_PLACES=207, PETRI_TRANSITIONS=198} [2024-06-21 20:52:09,633 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-21 20:52:09,633 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 198 transitions, 1944 flow [2024-06-21 20:52:09,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:09,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:09,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:09,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 20:52:09,633 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)] === [2024-06-21 20:52:09,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:09,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1152819867, now seen corresponding path program 4 times [2024-06-21 20:52:09,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:09,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266188655] [2024-06-21 20:52:09,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:09,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:10,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:10,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266188655] [2024-06-21 20:52:10,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266188655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:10,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:10,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:52:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498621749] [2024-06-21 20:52:10,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:10,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:52:10,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:52:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:52:10,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:10,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 198 transitions, 1944 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) [2024-06-21 20:52:10,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:10,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:10,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:10,755 INFO L124 PetriNetUnfolderBase]: 571/1010 cut-off events. [2024-06-21 20:52:10,755 INFO L125 PetriNetUnfolderBase]: For 55569/55569 co-relation queries the response was YES. [2024-06-21 20:52:10,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6230 conditions, 1010 events. 571/1010 cut-off events. For 55569/55569 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5035 event pairs, 142 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 6132. Up to 959 conditions per place. [2024-06-21 20:52:10,762 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 192 selfloop transitions, 17 changer transitions 0/211 dead transitions. [2024-06-21 20:52:10,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 211 transitions, 2440 flow [2024-06-21 20:52:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:10,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-21 20:52:10,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-21 20:52:10,763 INFO L175 Difference]: Start difference. First operand has 207 places, 198 transitions, 1944 flow. Second operand 10 states and 96 transitions. [2024-06-21 20:52:10,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 211 transitions, 2440 flow [2024-06-21 20:52:10,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 211 transitions, 2294 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 20:52:10,892 INFO L231 Difference]: Finished difference. Result has 210 places, 199 transitions, 1862 flow [2024-06-21 20:52:10,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1862, PETRI_PLACES=210, PETRI_TRANSITIONS=199} [2024-06-21 20:52:10,893 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 181 predicate places. [2024-06-21 20:52:10,893 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 199 transitions, 1862 flow [2024-06-21 20:52:10,893 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) [2024-06-21 20:52:10,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:10,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:10,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 20:52:10,893 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)] === [2024-06-21 20:52:10,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:10,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1888744106, now seen corresponding path program 9 times [2024-06-21 20:52:10,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:10,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131511540] [2024-06-21 20:52:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:10,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:11,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:11,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131511540] [2024-06-21 20:52:11,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131511540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:11,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:11,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:11,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368017788] [2024-06-21 20:52:11,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:11,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:11,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:11,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:11,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:11,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:11,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 199 transitions, 1862 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:11,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:11,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:11,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:11,888 INFO L124 PetriNetUnfolderBase]: 572/1013 cut-off events. [2024-06-21 20:52:11,888 INFO L125 PetriNetUnfolderBase]: For 54365/54365 co-relation queries the response was YES. [2024-06-21 20:52:11,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6068 conditions, 1013 events. 572/1013 cut-off events. For 54365/54365 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5075 event pairs, 80 based on Foata normal form. 2/1014 useless extension candidates. Maximal degree in co-relation 5969. Up to 874 conditions per place. [2024-06-21 20:52:11,895 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 45 changer transitions 0/215 dead transitions. [2024-06-21 20:52:11,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 215 transitions, 2380 flow [2024-06-21 20:52:11,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 20:52:11,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-21 20:52:11,896 INFO L175 Difference]: Start difference. First operand has 210 places, 199 transitions, 1862 flow. Second operand 10 states and 104 transitions. [2024-06-21 20:52:11,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 215 transitions, 2380 flow [2024-06-21 20:52:12,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 2326 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:12,027 INFO L231 Difference]: Finished difference. Result has 212 places, 201 transitions, 1959 flow [2024-06-21 20:52:12,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1959, PETRI_PLACES=212, PETRI_TRANSITIONS=201} [2024-06-21 20:52:12,028 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2024-06-21 20:52:12,028 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 201 transitions, 1959 flow [2024-06-21 20:52:12,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:12,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:12,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:12,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 20:52:12,029 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)] === [2024-06-21 20:52:12,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:12,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1427277511, now seen corresponding path program 5 times [2024-06-21 20:52:12,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:12,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432467674] [2024-06-21 20:52:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:12,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:12,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:12,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432467674] [2024-06-21 20:52:12,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432467674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:12,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:12,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:52:12,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475051841] [2024-06-21 20:52:12,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:12,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:52:12,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:12,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:52:12,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:52:12,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:12,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 201 transitions, 1959 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) [2024-06-21 20:52:12,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:12,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:12,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:12,997 INFO L124 PetriNetUnfolderBase]: 576/1021 cut-off events. [2024-06-21 20:52:12,997 INFO L125 PetriNetUnfolderBase]: For 56100/56100 co-relation queries the response was YES. [2024-06-21 20:52:13,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6205 conditions, 1021 events. 576/1021 cut-off events. For 56100/56100 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5141 event pairs, 105 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 6105. Up to 927 conditions per place. [2024-06-21 20:52:13,004 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 173 selfloop transitions, 38 changer transitions 0/213 dead transitions. [2024-06-21 20:52:13,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 213 transitions, 2487 flow [2024-06-21 20:52:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:52:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:52:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-21 20:52:13,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-21 20:52:13,005 INFO L175 Difference]: Start difference. First operand has 212 places, 201 transitions, 1959 flow. Second operand 9 states and 94 transitions. [2024-06-21 20:52:13,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 213 transitions, 2487 flow [2024-06-21 20:52:13,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 213 transitions, 2352 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:13,145 INFO L231 Difference]: Finished difference. Result has 213 places, 202 transitions, 1932 flow [2024-06-21 20:52:13,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1932, PETRI_PLACES=213, PETRI_TRANSITIONS=202} [2024-06-21 20:52:13,145 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2024-06-21 20:52:13,146 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 202 transitions, 1932 flow [2024-06-21 20:52:13,146 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) [2024-06-21 20:52:13,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:13,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:13,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 20:52:13,146 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)] === [2024-06-21 20:52:13,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:13,146 INFO L85 PathProgramCache]: Analyzing trace with hash 886788438, now seen corresponding path program 10 times [2024-06-21 20:52:13,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:13,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359806453] [2024-06-21 20:52:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:13,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:14,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:14,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359806453] [2024-06-21 20:52:14,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359806453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:14,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:14,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:14,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3010751] [2024-06-21 20:52:14,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:14,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:14,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:14,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:14,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:14,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:14,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 202 transitions, 1932 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:14,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:14,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:14,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:14,403 INFO L124 PetriNetUnfolderBase]: 572/1015 cut-off events. [2024-06-21 20:52:14,403 INFO L125 PetriNetUnfolderBase]: For 52235/52235 co-relation queries the response was YES. [2024-06-21 20:52:14,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 1015 events. 572/1015 cut-off events. For 52235/52235 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5119 event pairs, 98 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 5877. Up to 739 conditions per place. [2024-06-21 20:52:14,410 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 152 selfloop transitions, 64 changer transitions 0/218 dead transitions. [2024-06-21 20:52:14,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 218 transitions, 2464 flow [2024-06-21 20:52:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 20:52:14,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-21 20:52:14,411 INFO L175 Difference]: Start difference. First operand has 213 places, 202 transitions, 1932 flow. Second operand 10 states and 111 transitions. [2024-06-21 20:52:14,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 218 transitions, 2464 flow [2024-06-21 20:52:14,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 218 transitions, 2348 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 20:52:14,531 INFO L231 Difference]: Finished difference. Result has 216 places, 202 transitions, 1949 flow [2024-06-21 20:52:14,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1949, PETRI_PLACES=216, PETRI_TRANSITIONS=202} [2024-06-21 20:52:14,531 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2024-06-21 20:52:14,532 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 202 transitions, 1949 flow [2024-06-21 20:52:14,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:14,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:14,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:14,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 20:52:14,532 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)] === [2024-06-21 20:52:14,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:14,533 INFO L85 PathProgramCache]: Analyzing trace with hash 551417464, now seen corresponding path program 11 times [2024-06-21 20:52:14,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:14,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665344996] [2024-06-21 20:52:14,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:14,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:15,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:15,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665344996] [2024-06-21 20:52:15,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665344996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:15,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:15,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:15,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413822911] [2024-06-21 20:52:15,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:15,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:15,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:15,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:15,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:15,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:15,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 202 transitions, 1949 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:15,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:15,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:15,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:15,893 INFO L124 PetriNetUnfolderBase]: 576/1022 cut-off events. [2024-06-21 20:52:15,893 INFO L125 PetriNetUnfolderBase]: For 53716/53716 co-relation queries the response was YES. [2024-06-21 20:52:15,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 1022 events. 576/1022 cut-off events. For 53716/53716 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5143 event pairs, 93 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 6006. Up to 940 conditions per place. [2024-06-21 20:52:15,901 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 193 selfloop transitions, 26 changer transitions 0/221 dead transitions. [2024-06-21 20:52:15,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 221 transitions, 2475 flow [2024-06-21 20:52:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 20:52:15,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 20:52:15,902 INFO L175 Difference]: Start difference. First operand has 216 places, 202 transitions, 1949 flow. Second operand 10 states and 105 transitions. [2024-06-21 20:52:15,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 221 transitions, 2475 flow [2024-06-21 20:52:16,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 221 transitions, 2320 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 20:52:16,063 INFO L231 Difference]: Finished difference. Result has 216 places, 203 transitions, 1888 flow [2024-06-21 20:52:16,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1888, PETRI_PLACES=216, PETRI_TRANSITIONS=203} [2024-06-21 20:52:16,063 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2024-06-21 20:52:16,064 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 203 transitions, 1888 flow [2024-06-21 20:52:16,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:16,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:16,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:16,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 20:52:16,064 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)] === [2024-06-21 20:52:16,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:16,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1336416836, now seen corresponding path program 12 times [2024-06-21 20:52:16,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:16,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665328323] [2024-06-21 20:52:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:16,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:16,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:16,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665328323] [2024-06-21 20:52:16,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665328323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:16,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:16,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:16,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502238279] [2024-06-21 20:52:16,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:16,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:16,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:16,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:16,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:16,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:16,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 203 transitions, 1888 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:16,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:16,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:16,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:17,122 INFO L124 PetriNetUnfolderBase]: 573/1017 cut-off events. [2024-06-21 20:52:17,122 INFO L125 PetriNetUnfolderBase]: For 49877/49877 co-relation queries the response was YES. [2024-06-21 20:52:17,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5805 conditions, 1017 events. 573/1017 cut-off events. For 49877/49877 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5120 event pairs, 97 based on Foata normal form. 2/1018 useless extension candidates. Maximal degree in co-relation 5702. Up to 935 conditions per place. [2024-06-21 20:52:17,129 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 192 selfloop transitions, 27 changer transitions 0/221 dead transitions. [2024-06-21 20:52:17,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 221 transitions, 2375 flow [2024-06-21 20:52:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 20:52:17,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-21 20:52:17,130 INFO L175 Difference]: Start difference. First operand has 216 places, 203 transitions, 1888 flow. Second operand 10 states and 104 transitions. [2024-06-21 20:52:17,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 221 transitions, 2375 flow [2024-06-21 20:52:17,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 221 transitions, 2279 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:17,305 INFO L231 Difference]: Finished difference. Result has 218 places, 203 transitions, 1850 flow [2024-06-21 20:52:17,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1850, PETRI_PLACES=218, PETRI_TRANSITIONS=203} [2024-06-21 20:52:17,305 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 189 predicate places. [2024-06-21 20:52:17,305 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 203 transitions, 1850 flow [2024-06-21 20:52:17,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:17,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:17,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:17,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 20:52:17,306 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)] === [2024-06-21 20:52:17,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:17,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2076149437, now seen corresponding path program 6 times [2024-06-21 20:52:17,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:17,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201101506] [2024-06-21 20:52:17,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:17,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:18,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:18,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201101506] [2024-06-21 20:52:18,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201101506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:18,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:18,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:18,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866193499] [2024-06-21 20:52:18,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:18,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:18,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:18,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:18,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:18,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:18,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 203 transitions, 1850 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:18,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:18,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:18,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:18,500 INFO L124 PetriNetUnfolderBase]: 570/1012 cut-off events. [2024-06-21 20:52:18,500 INFO L125 PetriNetUnfolderBase]: For 44139/44139 co-relation queries the response was YES. [2024-06-21 20:52:18,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5542 conditions, 1012 events. 570/1012 cut-off events. For 44139/44139 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5107 event pairs, 112 based on Foata normal form. 2/1013 useless extension candidates. Maximal degree in co-relation 5438. Up to 972 conditions per place. [2024-06-21 20:52:18,507 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 196 selfloop transitions, 19 changer transitions 0/217 dead transitions. [2024-06-21 20:52:18,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 217 transitions, 2318 flow [2024-06-21 20:52:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:18,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:18,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-21 20:52:18,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-21 20:52:18,508 INFO L175 Difference]: Start difference. First operand has 218 places, 203 transitions, 1850 flow. Second operand 10 states and 99 transitions. [2024-06-21 20:52:18,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 217 transitions, 2318 flow [2024-06-21 20:52:18,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 217 transitions, 2186 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 20:52:18,661 INFO L231 Difference]: Finished difference. Result has 219 places, 203 transitions, 1760 flow [2024-06-21 20:52:18,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1760, PETRI_PLACES=219, PETRI_TRANSITIONS=203} [2024-06-21 20:52:18,661 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-21 20:52:18,662 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 203 transitions, 1760 flow [2024-06-21 20:52:18,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:18,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:18,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:18,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 20:52:18,662 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)] === [2024-06-21 20:52:18,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1738392233, now seen corresponding path program 1 times [2024-06-21 20:52:18,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:18,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651899052] [2024-06-21 20:52:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:18,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:19,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:19,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651899052] [2024-06-21 20:52:19,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651899052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:19,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:19,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:19,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346411841] [2024-06-21 20:52:19,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:19,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:19,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:19,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:19,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:19,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 203 transitions, 1760 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:19,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:19,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:19,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:19,958 INFO L124 PetriNetUnfolderBase]: 574/1020 cut-off events. [2024-06-21 20:52:19,958 INFO L125 PetriNetUnfolderBase]: For 44780/44780 co-relation queries the response was YES. [2024-06-21 20:52:19,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 1020 events. 574/1020 cut-off events. For 44780/44780 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5160 event pairs, 95 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 5370. Up to 915 conditions per place. [2024-06-21 20:52:19,966 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 195 selfloop transitions, 24 changer transitions 0/221 dead transitions. [2024-06-21 20:52:19,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 221 transitions, 2266 flow [2024-06-21 20:52:19,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-21 20:52:19,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 20:52:19,967 INFO L175 Difference]: Start difference. First operand has 219 places, 203 transitions, 1760 flow. Second operand 10 states and 100 transitions. [2024-06-21 20:52:19,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 221 transitions, 2266 flow [2024-06-21 20:52:20,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 221 transitions, 2103 flow, removed 18 selfloop flow, removed 13 redundant places. [2024-06-21 20:52:20,116 INFO L231 Difference]: Finished difference. Result has 216 places, 204 transitions, 1679 flow [2024-06-21 20:52:20,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1679, PETRI_PLACES=216, PETRI_TRANSITIONS=204} [2024-06-21 20:52:20,116 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2024-06-21 20:52:20,117 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 204 transitions, 1679 flow [2024-06-21 20:52:20,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:20,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:20,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:20,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 20:52:20,117 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)] === [2024-06-21 20:52:20,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash -795599703, now seen corresponding path program 2 times [2024-06-21 20:52:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:20,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041754200] [2024-06-21 20:52:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:20,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:21,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:21,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041754200] [2024-06-21 20:52:21,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041754200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:21,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:21,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:21,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392066759] [2024-06-21 20:52:21,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:21,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:21,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:21,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:21,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:21,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:21,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 204 transitions, 1679 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:21,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:21,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:21,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:21,426 INFO L124 PetriNetUnfolderBase]: 578/1028 cut-off events. [2024-06-21 20:52:21,426 INFO L125 PetriNetUnfolderBase]: For 45670/45670 co-relation queries the response was YES. [2024-06-21 20:52:21,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5403 conditions, 1028 events. 578/1028 cut-off events. For 45670/45670 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5230 event pairs, 84 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 5301. Up to 880 conditions per place. [2024-06-21 20:52:21,434 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 181 selfloop transitions, 39 changer transitions 0/222 dead transitions. [2024-06-21 20:52:21,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 222 transitions, 2191 flow [2024-06-21 20:52:21,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 20:52:21,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-21 20:52:21,435 INFO L175 Difference]: Start difference. First operand has 216 places, 204 transitions, 1679 flow. Second operand 10 states and 102 transitions. [2024-06-21 20:52:21,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 222 transitions, 2191 flow [2024-06-21 20:52:21,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 222 transitions, 2090 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 20:52:21,564 INFO L231 Difference]: Finished difference. Result has 217 places, 205 transitions, 1694 flow [2024-06-21 20:52:21,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1694, PETRI_PLACES=217, PETRI_TRANSITIONS=205} [2024-06-21 20:52:21,565 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-21 20:52:21,565 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 205 transitions, 1694 flow [2024-06-21 20:52:21,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:21,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:21,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:21,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 20:52:21,565 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)] === [2024-06-21 20:52:21,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1796600003, now seen corresponding path program 3 times [2024-06-21 20:52:21,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:21,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536113806] [2024-06-21 20:52:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:21,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:22,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:22,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536113806] [2024-06-21 20:52:22,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536113806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:22,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:22,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:22,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376658275] [2024-06-21 20:52:22,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:22,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:22,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:22,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:22,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:22,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:22,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 205 transitions, 1694 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:22,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:22,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:22,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:22,799 INFO L124 PetriNetUnfolderBase]: 589/1049 cut-off events. [2024-06-21 20:52:22,799 INFO L125 PetriNetUnfolderBase]: For 55050/55050 co-relation queries the response was YES. [2024-06-21 20:52:22,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5703 conditions, 1049 events. 589/1049 cut-off events. For 55050/55050 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5366 event pairs, 88 based on Foata normal form. 2/1050 useless extension candidates. Maximal degree in co-relation 5601. Up to 880 conditions per place. [2024-06-21 20:52:22,806 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 178 selfloop transitions, 45 changer transitions 0/225 dead transitions. [2024-06-21 20:52:22,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 225 transitions, 2402 flow [2024-06-21 20:52:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:52:22,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-21 20:52:22,807 INFO L175 Difference]: Start difference. First operand has 217 places, 205 transitions, 1694 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:52:22,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 225 transitions, 2402 flow [2024-06-21 20:52:22,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 225 transitions, 2300 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:22,964 INFO L231 Difference]: Finished difference. Result has 219 places, 207 transitions, 1752 flow [2024-06-21 20:52:22,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=219, PETRI_TRANSITIONS=207} [2024-06-21 20:52:22,964 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-21 20:52:22,964 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 207 transitions, 1752 flow [2024-06-21 20:52:22,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:22,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:22,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:22,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 20:52:22,964 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)] === [2024-06-21 20:52:22,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:22,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1796604653, now seen corresponding path program 4 times [2024-06-21 20:52:22,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:22,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736107346] [2024-06-21 20:52:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:22,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:23,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:23,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736107346] [2024-06-21 20:52:23,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736107346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:23,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:23,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:23,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96949224] [2024-06-21 20:52:23,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:23,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:23,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:23,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:23,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:23,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:23,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 207 transitions, 1752 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:23,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:23,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:23,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:24,228 INFO L124 PetriNetUnfolderBase]: 586/1044 cut-off events. [2024-06-21 20:52:24,228 INFO L125 PetriNetUnfolderBase]: For 50368/50368 co-relation queries the response was YES. [2024-06-21 20:52:24,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5508 conditions, 1044 events. 586/1044 cut-off events. For 50368/50368 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5364 event pairs, 89 based on Foata normal form. 2/1045 useless extension candidates. Maximal degree in co-relation 5405. Up to 898 conditions per place. [2024-06-21 20:52:24,236 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 177 selfloop transitions, 45 changer transitions 0/224 dead transitions. [2024-06-21 20:52:24,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 224 transitions, 2242 flow [2024-06-21 20:52:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 20:52:24,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-21 20:52:24,237 INFO L175 Difference]: Start difference. First operand has 219 places, 207 transitions, 1752 flow. Second operand 10 states and 104 transitions. [2024-06-21 20:52:24,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 224 transitions, 2242 flow [2024-06-21 20:52:24,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 224 transitions, 2122 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-21 20:52:24,396 INFO L231 Difference]: Finished difference. Result has 223 places, 207 transitions, 1729 flow [2024-06-21 20:52:24,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1729, PETRI_PLACES=223, PETRI_TRANSITIONS=207} [2024-06-21 20:52:24,396 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2024-06-21 20:52:24,396 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 207 transitions, 1729 flow [2024-06-21 20:52:24,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:24,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:24,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:24,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 20:52:24,397 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)] === [2024-06-21 20:52:24,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:24,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1796604839, now seen corresponding path program 1 times [2024-06-21 20:52:24,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:24,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491634552] [2024-06-21 20:52:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:24,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:25,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:25,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491634552] [2024-06-21 20:52:25,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491634552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:25,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:25,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:25,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244962921] [2024-06-21 20:52:25,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:25,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:25,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:25,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:25,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 207 transitions, 1729 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:25,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:25,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:25,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:25,902 INFO L124 PetriNetUnfolderBase]: 582/1038 cut-off events. [2024-06-21 20:52:25,903 INFO L125 PetriNetUnfolderBase]: For 44564/44564 co-relation queries the response was YES. [2024-06-21 20:52:25,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5267 conditions, 1038 events. 582/1038 cut-off events. For 44564/44564 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5342 event pairs, 88 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 5162. Up to 882 conditions per place. [2024-06-21 20:52:25,911 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 172 selfloop transitions, 52 changer transitions 0/226 dead transitions. [2024-06-21 20:52:25,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 226 transitions, 2275 flow [2024-06-21 20:52:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 20:52:25,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 20:52:25,921 INFO L175 Difference]: Start difference. First operand has 223 places, 207 transitions, 1729 flow. Second operand 10 states and 105 transitions. [2024-06-21 20:52:25,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 226 transitions, 2275 flow [2024-06-21 20:52:26,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 226 transitions, 2162 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 20:52:26,048 INFO L231 Difference]: Finished difference. Result has 224 places, 209 transitions, 1786 flow [2024-06-21 20:52:26,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1786, PETRI_PLACES=224, PETRI_TRANSITIONS=209} [2024-06-21 20:52:26,048 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-21 20:52:26,048 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 209 transitions, 1786 flow [2024-06-21 20:52:26,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:26,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:26,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:26,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 20:52:26,049 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)] === [2024-06-21 20:52:26,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:26,049 INFO L85 PathProgramCache]: Analyzing trace with hash 193732041, now seen corresponding path program 1 times [2024-06-21 20:52:26,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:26,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267329696] [2024-06-21 20:52:26,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:26,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:26,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:26,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267329696] [2024-06-21 20:52:26,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267329696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:26,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:26,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:26,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626666743] [2024-06-21 20:52:26,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:26,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:26,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:27,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:27,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 209 transitions, 1786 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:27,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:27,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:27,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:27,443 INFO L124 PetriNetUnfolderBase]: 602/1082 cut-off events. [2024-06-21 20:52:27,444 INFO L125 PetriNetUnfolderBase]: For 68850/68850 co-relation queries the response was YES. [2024-06-21 20:52:27,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 1082 events. 602/1082 cut-off events. For 68850/68850 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5632 event pairs, 88 based on Foata normal form. 10/1091 useless extension candidates. Maximal degree in co-relation 5396. Up to 895 conditions per place. [2024-06-21 20:52:27,451 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 184 selfloop transitions, 29 changer transitions 19/234 dead transitions. [2024-06-21 20:52:27,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 234 transitions, 2374 flow [2024-06-21 20:52:27,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:52:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:52:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 20:52:27,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-21 20:52:27,459 INFO L175 Difference]: Start difference. First operand has 224 places, 209 transitions, 1786 flow. Second operand 11 states and 117 transitions. [2024-06-21 20:52:27,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 234 transitions, 2374 flow [2024-06-21 20:52:27,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 234 transitions, 2222 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:27,607 INFO L231 Difference]: Finished difference. Result has 227 places, 201 transitions, 1615 flow [2024-06-21 20:52:27,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1615, PETRI_PLACES=227, PETRI_TRANSITIONS=201} [2024-06-21 20:52:27,607 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 198 predicate places. [2024-06-21 20:52:27,608 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 201 transitions, 1615 flow [2024-06-21 20:52:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:27,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:27,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:27,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 20:52:27,608 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)] === [2024-06-21 20:52:27,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash -508120339, now seen corresponding path program 5 times [2024-06-21 20:52:27,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:27,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366653707] [2024-06-21 20:52:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:27,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:28,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:28,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366653707] [2024-06-21 20:52:28,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366653707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:28,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:28,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107123665] [2024-06-21 20:52:28,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:28,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:28,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:28,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:28,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:28,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:28,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 201 transitions, 1615 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:28,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:28,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:28,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:28,823 INFO L124 PetriNetUnfolderBase]: 570/1034 cut-off events. [2024-06-21 20:52:28,823 INFO L125 PetriNetUnfolderBase]: For 77708/77708 co-relation queries the response was YES. [2024-06-21 20:52:28,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5228 conditions, 1034 events. 570/1034 cut-off events. For 77708/77708 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5370 event pairs, 95 based on Foata normal form. 12/1045 useless extension candidates. Maximal degree in co-relation 5121. Up to 848 conditions per place. [2024-06-21 20:52:28,831 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 173 selfloop transitions, 38 changer transitions 8/221 dead transitions. [2024-06-21 20:52:28,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 221 transitions, 2187 flow [2024-06-21 20:52:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 20:52:28,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-21 20:52:28,832 INFO L175 Difference]: Start difference. First operand has 227 places, 201 transitions, 1615 flow. Second operand 10 states and 108 transitions. [2024-06-21 20:52:28,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 221 transitions, 2187 flow [2024-06-21 20:52:28,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 221 transitions, 2103 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-21 20:52:28,973 INFO L231 Difference]: Finished difference. Result has 222 places, 198 transitions, 1621 flow [2024-06-21 20:52:28,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1621, PETRI_PLACES=222, PETRI_TRANSITIONS=198} [2024-06-21 20:52:28,974 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2024-06-21 20:52:28,974 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 198 transitions, 1621 flow [2024-06-21 20:52:28,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:28,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:28,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:28,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 20:52:28,974 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)] === [2024-06-21 20:52:28,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash -507874385, now seen corresponding path program 2 times [2024-06-21 20:52:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488916064] [2024-06-21 20:52:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:28,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:29,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:29,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488916064] [2024-06-21 20:52:29,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488916064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:29,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:29,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:29,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671431611] [2024-06-21 20:52:29,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:29,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:29,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:29,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:29,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:29,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 198 transitions, 1621 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) [2024-06-21 20:52:29,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:29,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:29,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:29,983 INFO L124 PetriNetUnfolderBase]: 586/1074 cut-off events. [2024-06-21 20:52:29,983 INFO L125 PetriNetUnfolderBase]: For 100501/100501 co-relation queries the response was YES. [2024-06-21 20:52:29,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6400 conditions, 1074 events. 586/1074 cut-off events. For 100501/100501 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5601 event pairs, 107 based on Foata normal form. 8/1081 useless extension candidates. Maximal degree in co-relation 6295. Up to 796 conditions per place. [2024-06-21 20:52:29,992 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 179 selfloop transitions, 31 changer transitions 10/222 dead transitions. [2024-06-21 20:52:29,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 222 transitions, 2391 flow [2024-06-21 20:52:29,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:29,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 20:52:29,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-21 20:52:29,993 INFO L175 Difference]: Start difference. First operand has 222 places, 198 transitions, 1621 flow. Second operand 10 states and 110 transitions. [2024-06-21 20:52:29,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 222 transitions, 2391 flow [2024-06-21 20:52:30,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 222 transitions, 2286 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:30,204 INFO L231 Difference]: Finished difference. Result has 224 places, 193 transitions, 1549 flow [2024-06-21 20:52:30,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1549, PETRI_PLACES=224, PETRI_TRANSITIONS=193} [2024-06-21 20:52:30,204 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-21 20:52:30,204 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 193 transitions, 1549 flow [2024-06-21 20:52:30,205 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) [2024-06-21 20:52:30,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:30,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:30,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 20:52:30,205 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)] === [2024-06-21 20:52:30,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:30,205 INFO L85 PathProgramCache]: Analyzing trace with hash -605942719, now seen corresponding path program 6 times [2024-06-21 20:52:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:30,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398960071] [2024-06-21 20:52:30,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:30,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:31,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:31,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398960071] [2024-06-21 20:52:31,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398960071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:31,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:31,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:31,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285499621] [2024-06-21 20:52:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:31,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:31,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:31,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:31,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:31,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 193 transitions, 1549 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:31,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:31,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:31,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:31,691 INFO L124 PetriNetUnfolderBase]: 564/1028 cut-off events. [2024-06-21 20:52:31,691 INFO L125 PetriNetUnfolderBase]: For 85047/85047 co-relation queries the response was YES. [2024-06-21 20:52:31,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6221 conditions, 1028 events. 564/1028 cut-off events. For 85047/85047 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5306 event pairs, 89 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 6115. Up to 746 conditions per place. [2024-06-21 20:52:31,698 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 134 selfloop transitions, 74 changer transitions 0/210 dead transitions. [2024-06-21 20:52:31,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 210 transitions, 2045 flow [2024-06-21 20:52:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:31,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 20:52:31,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-21 20:52:31,699 INFO L175 Difference]: Start difference. First operand has 224 places, 193 transitions, 1549 flow. Second operand 10 states and 109 transitions. [2024-06-21 20:52:31,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 210 transitions, 2045 flow [2024-06-21 20:52:31,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 210 transitions, 1983 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 20:52:31,890 INFO L231 Difference]: Finished difference. Result has 218 places, 194 transitions, 1678 flow [2024-06-21 20:52:31,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1678, PETRI_PLACES=218, PETRI_TRANSITIONS=194} [2024-06-21 20:52:31,891 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 189 predicate places. [2024-06-21 20:52:31,891 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 194 transitions, 1678 flow [2024-06-21 20:52:31,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:31,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:31,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:31,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 20:52:31,891 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)] === [2024-06-21 20:52:31,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:31,892 INFO L85 PathProgramCache]: Analyzing trace with hash -685256509, now seen corresponding path program 7 times [2024-06-21 20:52:31,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:31,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673992696] [2024-06-21 20:52:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:31,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:32,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:32,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673992696] [2024-06-21 20:52:32,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673992696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:32,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:32,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:32,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744150607] [2024-06-21 20:52:32,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:32,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:32,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:32,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:32,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:32,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:32,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 194 transitions, 1678 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:32,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:32,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:32,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:33,141 INFO L124 PetriNetUnfolderBase]: 568/1036 cut-off events. [2024-06-21 20:52:33,141 INFO L125 PetriNetUnfolderBase]: For 80064/80064 co-relation queries the response was YES. [2024-06-21 20:52:33,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6389 conditions, 1036 events. 568/1036 cut-off events. For 80064/80064 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5379 event pairs, 89 based on Foata normal form. 2/1037 useless extension candidates. Maximal degree in co-relation 6286. Up to 738 conditions per place. [2024-06-21 20:52:33,149 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 135 selfloop transitions, 74 changer transitions 0/211 dead transitions. [2024-06-21 20:52:33,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 211 transitions, 2176 flow [2024-06-21 20:52:33,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:33,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:33,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 20:52:33,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-21 20:52:33,150 INFO L175 Difference]: Start difference. First operand has 218 places, 194 transitions, 1678 flow. Second operand 10 states and 110 transitions. [2024-06-21 20:52:33,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 211 transitions, 2176 flow [2024-06-21 20:52:33,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 211 transitions, 1997 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:33,342 INFO L231 Difference]: Finished difference. Result has 220 places, 195 transitions, 1691 flow [2024-06-21 20:52:33,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1691, PETRI_PLACES=220, PETRI_TRANSITIONS=195} [2024-06-21 20:52:33,342 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-21 20:52:33,342 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 195 transitions, 1691 flow [2024-06-21 20:52:33,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:33,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:33,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:33,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 20:52:33,343 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)] === [2024-06-21 20:52:33,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:33,343 INFO L85 PathProgramCache]: Analyzing trace with hash -508113395, now seen corresponding path program 3 times [2024-06-21 20:52:33,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:33,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042740931] [2024-06-21 20:52:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:33,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:34,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042740931] [2024-06-21 20:52:34,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042740931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:34,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:34,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:34,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680277038] [2024-06-21 20:52:34,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:34,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:34,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:34,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 195 transitions, 1691 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:34,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:34,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:34,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:34,561 INFO L124 PetriNetUnfolderBase]: 584/1072 cut-off events. [2024-06-21 20:52:34,562 INFO L125 PetriNetUnfolderBase]: For 102636/102636 co-relation queries the response was YES. [2024-06-21 20:52:34,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 1072 events. 584/1072 cut-off events. For 102636/102636 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5605 event pairs, 119 based on Foata normal form. 10/1081 useless extension candidates. Maximal degree in co-relation 6434. Up to 900 conditions per place. [2024-06-21 20:52:34,570 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 23 changer transitions 23/216 dead transitions. [2024-06-21 20:52:34,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 216 transitions, 2221 flow [2024-06-21 20:52:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:52:34,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:52:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 20:52:34,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-21 20:52:34,571 INFO L175 Difference]: Start difference. First operand has 220 places, 195 transitions, 1691 flow. Second operand 11 states and 116 transitions. [2024-06-21 20:52:34,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 216 transitions, 2221 flow [2024-06-21 20:52:34,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 216 transitions, 2039 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:34,782 INFO L231 Difference]: Finished difference. Result has 223 places, 182 transitions, 1456 flow [2024-06-21 20:52:34,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1456, PETRI_PLACES=223, PETRI_TRANSITIONS=182} [2024-06-21 20:52:34,782 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2024-06-21 20:52:34,782 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 182 transitions, 1456 flow [2024-06-21 20:52:34,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:34,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:34,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:34,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 20:52:34,783 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)] === [2024-06-21 20:52:34,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:34,783 INFO L85 PathProgramCache]: Analyzing trace with hash -514549429, now seen corresponding path program 8 times [2024-06-21 20:52:34,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:34,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937714380] [2024-06-21 20:52:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:34,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:35,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:35,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937714380] [2024-06-21 20:52:35,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937714380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:35,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:35,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:35,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792290570] [2024-06-21 20:52:35,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:35,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:35,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:35,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:35,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:35,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:35,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 182 transitions, 1456 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:35,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:35,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:35,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:35,974 INFO L124 PetriNetUnfolderBase]: 531/973 cut-off events. [2024-06-21 20:52:35,974 INFO L125 PetriNetUnfolderBase]: For 76531/76531 co-relation queries the response was YES. [2024-06-21 20:52:35,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5742 conditions, 973 events. 531/973 cut-off events. For 76531/76531 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4979 event pairs, 110 based on Foata normal form. 2/974 useless extension candidates. Maximal degree in co-relation 5637. Up to 887 conditions per place. [2024-06-21 20:52:35,982 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 28 changer transitions 0/198 dead transitions. [2024-06-21 20:52:35,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 198 transitions, 1928 flow [2024-06-21 20:52:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-21 20:52:35,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-21 20:52:35,983 INFO L175 Difference]: Start difference. First operand has 223 places, 182 transitions, 1456 flow. Second operand 10 states and 101 transitions. [2024-06-21 20:52:35,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 198 transitions, 1928 flow [2024-06-21 20:52:36,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 198 transitions, 1866 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 20:52:36,138 INFO L231 Difference]: Finished difference. Result has 214 places, 183 transitions, 1497 flow [2024-06-21 20:52:36,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1497, PETRI_PLACES=214, PETRI_TRANSITIONS=183} [2024-06-21 20:52:36,139 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-21 20:52:36,139 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 183 transitions, 1497 flow [2024-06-21 20:52:36,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:36,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:36,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:36,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 20:52:36,139 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)] === [2024-06-21 20:52:36,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:36,139 INFO L85 PathProgramCache]: Analyzing trace with hash -514369505, now seen corresponding path program 4 times [2024-06-21 20:52:36,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:36,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279790959] [2024-06-21 20:52:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:36,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:36,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:36,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279790959] [2024-06-21 20:52:36,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279790959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:36,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:36,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:36,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028556827] [2024-06-21 20:52:36,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:36,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:36,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:36,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:36,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 183 transitions, 1497 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:36,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:36,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:36,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:37,294 INFO L124 PetriNetUnfolderBase]: 518/950 cut-off events. [2024-06-21 20:52:37,294 INFO L125 PetriNetUnfolderBase]: For 64920/64920 co-relation queries the response was YES. [2024-06-21 20:52:37,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4821 conditions, 950 events. 518/950 cut-off events. For 64920/64920 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4855 event pairs, 97 based on Foata normal form. 10/959 useless extension candidates. Maximal degree in co-relation 4719. Up to 812 conditions per place. [2024-06-21 20:52:37,300 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 163 selfloop transitions, 18 changer transitions 20/203 dead transitions. [2024-06-21 20:52:37,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 203 transitions, 1997 flow [2024-06-21 20:52:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:52:37,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:52:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-21 20:52:37,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-21 20:52:37,301 INFO L175 Difference]: Start difference. First operand has 214 places, 183 transitions, 1497 flow. Second operand 11 states and 111 transitions. [2024-06-21 20:52:37,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 203 transitions, 1997 flow [2024-06-21 20:52:37,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 203 transitions, 1910 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:37,421 INFO L231 Difference]: Finished difference. Result has 217 places, 173 transitions, 1366 flow [2024-06-21 20:52:37,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1366, PETRI_PLACES=217, PETRI_TRANSITIONS=173} [2024-06-21 20:52:37,422 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-21 20:52:37,422 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 173 transitions, 1366 flow [2024-06-21 20:52:37,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:37,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:37,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:37,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 20:52:37,422 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)] === [2024-06-21 20:52:37,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:37,422 INFO L85 PathProgramCache]: Analyzing trace with hash -685371829, now seen corresponding path program 9 times [2024-06-21 20:52:37,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:37,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893565116] [2024-06-21 20:52:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:37,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:38,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:38,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893565116] [2024-06-21 20:52:38,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893565116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:38,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:38,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:38,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934025662] [2024-06-21 20:52:38,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:38,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:38,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:38,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:38,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:38,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 173 transitions, 1366 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:38,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:38,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:38,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:38,622 INFO L124 PetriNetUnfolderBase]: 477/879 cut-off events. [2024-06-21 20:52:38,622 INFO L125 PetriNetUnfolderBase]: For 50416/50416 co-relation queries the response was YES. [2024-06-21 20:52:38,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 879 events. 477/879 cut-off events. For 50416/50416 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4443 event pairs, 80 based on Foata normal form. 2/880 useless extension candidates. Maximal degree in co-relation 4595. Up to 628 conditions per place. [2024-06-21 20:52:38,629 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 135 selfloop transitions, 55 changer transitions 0/192 dead transitions. [2024-06-21 20:52:38,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 192 transitions, 2018 flow [2024-06-21 20:52:38,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 20:52:38,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-21 20:52:38,630 INFO L175 Difference]: Start difference. First operand has 217 places, 173 transitions, 1366 flow. Second operand 10 states and 108 transitions. [2024-06-21 20:52:38,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 192 transitions, 2018 flow [2024-06-21 20:52:38,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 192 transitions, 1954 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-21 20:52:38,750 INFO L231 Difference]: Finished difference. Result has 209 places, 175 transitions, 1502 flow [2024-06-21 20:52:38,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1502, PETRI_PLACES=209, PETRI_TRANSITIONS=175} [2024-06-21 20:52:38,750 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-21 20:52:38,750 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 175 transitions, 1502 flow [2024-06-21 20:52:38,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:38,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:38,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:38,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 20:52:38,751 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)] === [2024-06-21 20:52:38,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash -680603285, now seen corresponding path program 5 times [2024-06-21 20:52:38,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:38,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714723306] [2024-06-21 20:52:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:38,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:39,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:39,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714723306] [2024-06-21 20:52:39,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714723306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:39,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:39,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:39,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415520638] [2024-06-21 20:52:39,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:39,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:39,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:39,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:39,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:39,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:39,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 175 transitions, 1502 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:39,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:39,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:39,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:40,377 INFO L124 PetriNetUnfolderBase]: 493/915 cut-off events. [2024-06-21 20:52:40,377 INFO L125 PetriNetUnfolderBase]: For 67688/67688 co-relation queries the response was YES. [2024-06-21 20:52:40,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4888 conditions, 915 events. 493/915 cut-off events. For 67688/67688 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4688 event pairs, 80 based on Foata normal form. 10/924 useless extension candidates. Maximal degree in co-relation 4788. Up to 647 conditions per place. [2024-06-21 20:52:40,385 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 129 selfloop transitions, 45 changer transitions 21/197 dead transitions. [2024-06-21 20:52:40,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 197 transitions, 1998 flow [2024-06-21 20:52:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:52:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:52:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 20:52:40,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 20:52:40,386 INFO L175 Difference]: Start difference. First operand has 209 places, 175 transitions, 1502 flow. Second operand 11 states and 120 transitions. [2024-06-21 20:52:40,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 197 transitions, 1998 flow [2024-06-21 20:52:40,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 197 transitions, 1892 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-21 20:52:40,519 INFO L231 Difference]: Finished difference. Result has 214 places, 164 transitions, 1415 flow [2024-06-21 20:52:40,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1415, PETRI_PLACES=214, PETRI_TRANSITIONS=164} [2024-06-21 20:52:40,519 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-21 20:52:40,519 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 164 transitions, 1415 flow [2024-06-21 20:52:40,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:40,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:40,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:40,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 20:52:40,520 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)] === [2024-06-21 20:52:40,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1832266989, now seen corresponding path program 10 times [2024-06-21 20:52:40,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:40,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614332381] [2024-06-21 20:52:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:40,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:41,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:41,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614332381] [2024-06-21 20:52:41,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614332381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:41,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:41,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:41,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602143673] [2024-06-21 20:52:41,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:41,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:41,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:41,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:41,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:41,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:41,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 164 transitions, 1415 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:41,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:41,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:41,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:41,583 INFO L124 PetriNetUnfolderBase]: 438/818 cut-off events. [2024-06-21 20:52:41,584 INFO L125 PetriNetUnfolderBase]: For 41677/41677 co-relation queries the response was YES. [2024-06-21 20:52:41,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4307 conditions, 818 events. 438/818 cut-off events. For 41677/41677 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4108 event pairs, 85 based on Foata normal form. 2/819 useless extension candidates. Maximal degree in co-relation 4205. Up to 756 conditions per place. [2024-06-21 20:52:41,590 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 156 selfloop transitions, 20 changer transitions 0/178 dead transitions. [2024-06-21 20:52:41,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 178 transitions, 1801 flow [2024-06-21 20:52:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:41,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-21 20:52:41,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-21 20:52:41,591 INFO L175 Difference]: Start difference. First operand has 214 places, 164 transitions, 1415 flow. Second operand 10 states and 96 transitions. [2024-06-21 20:52:41,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 178 transitions, 1801 flow [2024-06-21 20:52:41,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 178 transitions, 1661 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-21 20:52:41,713 INFO L231 Difference]: Finished difference. Result has 205 places, 164 transitions, 1319 flow [2024-06-21 20:52:41,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1319, PETRI_PLACES=205, PETRI_TRANSITIONS=164} [2024-06-21 20:52:41,714 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-21 20:52:41,714 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 164 transitions, 1319 flow [2024-06-21 20:52:41,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:41,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:41,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:41,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 20:52:41,714 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)] === [2024-06-21 20:52:41,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:41,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1573827309, now seen corresponding path program 11 times [2024-06-21 20:52:41,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:41,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181292842] [2024-06-21 20:52:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:41,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:42,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:42,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181292842] [2024-06-21 20:52:42,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181292842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:42,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:42,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:42,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740260092] [2024-06-21 20:52:42,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:42,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:42,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:42,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 164 transitions, 1319 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:42,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:42,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:42,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:42,995 INFO L124 PetriNetUnfolderBase]: 442/827 cut-off events. [2024-06-21 20:52:42,996 INFO L125 PetriNetUnfolderBase]: For 37073/37073 co-relation queries the response was YES. [2024-06-21 20:52:43,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4177 conditions, 827 events. 442/827 cut-off events. For 37073/37073 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4161 event pairs, 76 based on Foata normal form. 2/828 useless extension candidates. Maximal degree in co-relation 4079. Up to 690 conditions per place. [2024-06-21 20:52:43,002 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 133 selfloop transitions, 44 changer transitions 0/179 dead transitions. [2024-06-21 20:52:43,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 179 transitions, 1741 flow [2024-06-21 20:52:43,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-21 20:52:43,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3433333333333333 [2024-06-21 20:52:43,003 INFO L175 Difference]: Start difference. First operand has 205 places, 164 transitions, 1319 flow. Second operand 10 states and 103 transitions. [2024-06-21 20:52:43,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 179 transitions, 1741 flow [2024-06-21 20:52:43,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 179 transitions, 1697 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 20:52:43,124 INFO L231 Difference]: Finished difference. Result has 206 places, 165 transitions, 1399 flow [2024-06-21 20:52:43,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1399, PETRI_PLACES=206, PETRI_TRANSITIONS=165} [2024-06-21 20:52:43,124 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2024-06-21 20:52:43,125 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 165 transitions, 1399 flow [2024-06-21 20:52:43,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:43,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:43,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:43,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 20:52:43,125 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)] === [2024-06-21 20:52:43,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:43,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1827503561, now seen corresponding path program 12 times [2024-06-21 20:52:43,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:43,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593024001] [2024-06-21 20:52:43,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:43,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:43,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:43,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593024001] [2024-06-21 20:52:43,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593024001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:43,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:43,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:43,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017701589] [2024-06-21 20:52:43,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:43,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:43,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:43,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:43,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:44,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:44,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 165 transitions, 1399 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:44,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:44,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:44,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:44,311 INFO L124 PetriNetUnfolderBase]: 446/835 cut-off events. [2024-06-21 20:52:44,311 INFO L125 PetriNetUnfolderBase]: For 38780/38780 co-relation queries the response was YES. [2024-06-21 20:52:44,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4338 conditions, 835 events. 446/835 cut-off events. For 38780/38780 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4246 event pairs, 74 based on Foata normal form. 2/836 useless extension candidates. Maximal degree in co-relation 4239. Up to 684 conditions per place. [2024-06-21 20:52:44,317 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 133 selfloop transitions, 45 changer transitions 0/180 dead transitions. [2024-06-21 20:52:44,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 180 transitions, 1823 flow [2024-06-21 20:52:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:44,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:44,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 20:52:44,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-21 20:52:44,318 INFO L175 Difference]: Start difference. First operand has 206 places, 165 transitions, 1399 flow. Second operand 10 states and 104 transitions. [2024-06-21 20:52:44,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 180 transitions, 1823 flow [2024-06-21 20:52:44,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 180 transitions, 1709 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:44,431 INFO L231 Difference]: Finished difference. Result has 208 places, 166 transitions, 1413 flow [2024-06-21 20:52:44,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1413, PETRI_PLACES=208, PETRI_TRANSITIONS=166} [2024-06-21 20:52:44,432 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 179 predicate places. [2024-06-21 20:52:44,432 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 166 transitions, 1413 flow [2024-06-21 20:52:44,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:44,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:44,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:44,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 20:52:44,432 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)] === [2024-06-21 20:52:44,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1326011619, now seen corresponding path program 13 times [2024-06-21 20:52:44,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:44,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551891809] [2024-06-21 20:52:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:44,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:45,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:45,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551891809] [2024-06-21 20:52:45,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551891809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:45,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:45,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:45,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810591371] [2024-06-21 20:52:45,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:45,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:45,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:45,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:45,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:45,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 166 transitions, 1413 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:45,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:45,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:45,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:45,635 INFO L124 PetriNetUnfolderBase]: 466/879 cut-off events. [2024-06-21 20:52:45,636 INFO L125 PetriNetUnfolderBase]: For 66812/66812 co-relation queries the response was YES. [2024-06-21 20:52:45,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4551 conditions, 879 events. 466/879 cut-off events. For 66812/66812 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4501 event pairs, 85 based on Foata normal form. 12/890 useless extension candidates. Maximal degree in co-relation 4451. Up to 745 conditions per place. [2024-06-21 20:52:45,643 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 147 selfloop transitions, 29 changer transitions 6/184 dead transitions. [2024-06-21 20:52:45,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 184 transitions, 1895 flow [2024-06-21 20:52:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 20:52:45,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-21 20:52:45,644 INFO L175 Difference]: Start difference. First operand has 208 places, 166 transitions, 1413 flow. Second operand 10 states and 107 transitions. [2024-06-21 20:52:45,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 184 transitions, 1895 flow [2024-06-21 20:52:45,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 184 transitions, 1777 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:45,767 INFO L231 Difference]: Finished difference. Result has 210 places, 165 transitions, 1380 flow [2024-06-21 20:52:45,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1380, PETRI_PLACES=210, PETRI_TRANSITIONS=165} [2024-06-21 20:52:45,767 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 181 predicate places. [2024-06-21 20:52:45,767 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 165 transitions, 1380 flow [2024-06-21 20:52:45,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:45,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:45,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:45,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 20:52:45,768 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)] === [2024-06-21 20:52:45,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1289255583, now seen corresponding path program 14 times [2024-06-21 20:52:45,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:45,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829679750] [2024-06-21 20:52:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:45,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:46,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:46,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829679750] [2024-06-21 20:52:46,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829679750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:46,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:46,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:46,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256717034] [2024-06-21 20:52:46,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:46,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:46,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:46,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:46,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:46,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:46,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 165 transitions, 1380 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:46,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:46,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:46,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:47,007 INFO L124 PetriNetUnfolderBase]: 446/839 cut-off events. [2024-06-21 20:52:47,007 INFO L125 PetriNetUnfolderBase]: For 41202/41202 co-relation queries the response was YES. [2024-06-21 20:52:47,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 839 events. 446/839 cut-off events. For 41202/41202 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4252 event pairs, 81 based on Foata normal form. 2/840 useless extension candidates. Maximal degree in co-relation 4256. Up to 647 conditions per place. [2024-06-21 20:52:47,013 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 126 selfloop transitions, 53 changer transitions 0/181 dead transitions. [2024-06-21 20:52:47,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 181 transitions, 1848 flow [2024-06-21 20:52:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:52:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:52:47,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 20:52:47,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-21 20:52:47,014 INFO L175 Difference]: Start difference. First operand has 210 places, 165 transitions, 1380 flow. Second operand 11 states and 116 transitions. [2024-06-21 20:52:47,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 181 transitions, 1848 flow [2024-06-21 20:52:47,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 181 transitions, 1760 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:47,146 INFO L231 Difference]: Finished difference. Result has 213 places, 166 transitions, 1440 flow [2024-06-21 20:52:47,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1440, PETRI_PLACES=213, PETRI_TRANSITIONS=166} [2024-06-21 20:52:47,147 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2024-06-21 20:52:47,147 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 166 transitions, 1440 flow [2024-06-21 20:52:47,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:47,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:47,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:47,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 20:52:47,148 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)] === [2024-06-21 20:52:47,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:47,148 INFO L85 PathProgramCache]: Analyzing trace with hash 60537857, now seen corresponding path program 6 times [2024-06-21 20:52:47,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:47,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120060787] [2024-06-21 20:52:47,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:47,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:47,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:47,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120060787] [2024-06-21 20:52:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120060787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:47,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:47,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:47,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008228763] [2024-06-21 20:52:47,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:47,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:47,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:47,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:48,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:48,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 166 transitions, 1440 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:48,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:48,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:48,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:48,265 INFO L124 PetriNetUnfolderBase]: 462/875 cut-off events. [2024-06-21 20:52:48,265 INFO L125 PetriNetUnfolderBase]: For 63521/63521 co-relation queries the response was YES. [2024-06-21 20:52:48,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4546 conditions, 875 events. 462/875 cut-off events. For 63521/63521 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4484 event pairs, 85 based on Foata normal form. 10/884 useless extension candidates. Maximal degree in co-relation 4444. Up to 637 conditions per place. [2024-06-21 20:52:48,270 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 124 selfloop transitions, 45 changer transitions 16/187 dead transitions. [2024-06-21 20:52:48,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 187 transitions, 1942 flow [2024-06-21 20:52:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:52:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:52:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 20:52:48,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-21 20:52:48,271 INFO L175 Difference]: Start difference. First operand has 213 places, 166 transitions, 1440 flow. Second operand 11 states and 122 transitions. [2024-06-21 20:52:48,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 187 transitions, 1942 flow [2024-06-21 20:52:48,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 187 transitions, 1804 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 20:52:48,388 INFO L231 Difference]: Finished difference. Result has 215 places, 160 transitions, 1362 flow [2024-06-21 20:52:48,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1362, PETRI_PLACES=215, PETRI_TRANSITIONS=160} [2024-06-21 20:52:48,389 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2024-06-21 20:52:48,389 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 160 transitions, 1362 flow [2024-06-21 20:52:48,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:48,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:48,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:48,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 20:52:48,389 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)] === [2024-06-21 20:52:48,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1714198143, now seen corresponding path program 15 times [2024-06-21 20:52:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:48,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105068161] [2024-06-21 20:52:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:48,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:49,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:49,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105068161] [2024-06-21 20:52:49,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105068161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:49,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:49,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:49,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799402050] [2024-06-21 20:52:49,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:49,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:49,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:49,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:49,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:49,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:49,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 160 transitions, 1362 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:49,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:49,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:49,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:49,559 INFO L124 PetriNetUnfolderBase]: 466/887 cut-off events. [2024-06-21 20:52:49,559 INFO L125 PetriNetUnfolderBase]: For 78178/78178 co-relation queries the response was YES. [2024-06-21 20:52:49,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 887 events. 466/887 cut-off events. For 78178/78178 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4542 event pairs, 97 based on Foata normal form. 2/888 useless extension candidates. Maximal degree in co-relation 5484. Up to 621 conditions per place. [2024-06-21 20:52:49,565 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 132 selfloop transitions, 48 changer transitions 0/182 dead transitions. [2024-06-21 20:52:49,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 182 transitions, 2076 flow [2024-06-21 20:52:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 20:52:49,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-21 20:52:49,566 INFO L175 Difference]: Start difference. First operand has 215 places, 160 transitions, 1362 flow. Second operand 10 states and 113 transitions. [2024-06-21 20:52:49,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 182 transitions, 2076 flow [2024-06-21 20:52:49,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 182 transitions, 1954 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-21 20:52:49,696 INFO L231 Difference]: Finished difference. Result has 209 places, 162 transitions, 1439 flow [2024-06-21 20:52:49,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1439, PETRI_PLACES=209, PETRI_TRANSITIONS=162} [2024-06-21 20:52:49,696 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-21 20:52:49,696 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 162 transitions, 1439 flow [2024-06-21 20:52:49,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:49,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:49,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:49,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 20:52:49,696 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)] === [2024-06-21 20:52:49,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:49,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1720631883, now seen corresponding path program 16 times [2024-06-21 20:52:49,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:49,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127455588] [2024-06-21 20:52:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:50,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:50,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127455588] [2024-06-21 20:52:50,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127455588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:50,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:50,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:50,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266264115] [2024-06-21 20:52:50,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:50,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:50,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:50,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:50,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:50,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 162 transitions, 1439 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:50,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:50,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:50,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:50,907 INFO L124 PetriNetUnfolderBase]: 486/931 cut-off events. [2024-06-21 20:52:50,907 INFO L125 PetriNetUnfolderBase]: For 97853/97853 co-relation queries the response was YES. [2024-06-21 20:52:50,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 931 events. 486/931 cut-off events. For 97853/97853 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4833 event pairs, 107 based on Foata normal form. 12/942 useless extension candidates. Maximal degree in co-relation 5664. Up to 713 conditions per place. [2024-06-21 20:52:50,914 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 133 selfloop transitions, 43 changer transitions 5/183 dead transitions. [2024-06-21 20:52:50,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 183 transitions, 2002 flow [2024-06-21 20:52:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 20:52:50,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-21 20:52:50,915 INFO L175 Difference]: Start difference. First operand has 209 places, 162 transitions, 1439 flow. Second operand 10 states and 114 transitions. [2024-06-21 20:52:50,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 183 transitions, 2002 flow [2024-06-21 20:52:51,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 183 transitions, 1870 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-21 20:52:51,090 INFO L231 Difference]: Finished difference. Result has 212 places, 162 transitions, 1429 flow [2024-06-21 20:52:51,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1429, PETRI_PLACES=212, PETRI_TRANSITIONS=162} [2024-06-21 20:52:51,091 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2024-06-21 20:52:51,091 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 162 transitions, 1429 flow [2024-06-21 20:52:51,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:51,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:51,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:51,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 20:52:51,091 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)] === [2024-06-21 20:52:51,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:51,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1148760129, now seen corresponding path program 17 times [2024-06-21 20:52:51,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:51,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110543731] [2024-06-21 20:52:51,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:51,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:51,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:51,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110543731] [2024-06-21 20:52:51,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110543731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:51,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:51,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:51,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085303246] [2024-06-21 20:52:51,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:51,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:51,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:51,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:51,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:52,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:52,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 162 transitions, 1429 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:52,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:52,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:52,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:52,330 INFO L124 PetriNetUnfolderBase]: 478/919 cut-off events. [2024-06-21 20:52:52,330 INFO L125 PetriNetUnfolderBase]: For 73823/73823 co-relation queries the response was YES. [2024-06-21 20:52:52,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5678 conditions, 919 events. 478/919 cut-off events. For 73823/73823 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4793 event pairs, 90 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 5576. Up to 426 conditions per place. [2024-06-21 20:52:52,336 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 98 selfloop transitions, 84 changer transitions 0/184 dead transitions. [2024-06-21 20:52:52,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 184 transitions, 2107 flow [2024-06-21 20:52:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 20:52:52,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-21 20:52:52,337 INFO L175 Difference]: Start difference. First operand has 212 places, 162 transitions, 1429 flow. Second operand 10 states and 119 transitions. [2024-06-21 20:52:52,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 184 transitions, 2107 flow [2024-06-21 20:52:52,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 184 transitions, 1997 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:52,505 INFO L231 Difference]: Finished difference. Result has 214 places, 164 transitions, 1569 flow [2024-06-21 20:52:52,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1569, PETRI_PLACES=214, PETRI_TRANSITIONS=164} [2024-06-21 20:52:52,505 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-21 20:52:52,505 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 164 transitions, 1569 flow [2024-06-21 20:52:52,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:52,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:52,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:52,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 20:52:52,506 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)] === [2024-06-21 20:52:52,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:52,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1720638827, now seen corresponding path program 7 times [2024-06-21 20:52:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:52,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800559341] [2024-06-21 20:52:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:52,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:53,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:53,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800559341] [2024-06-21 20:52:53,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800559341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:53,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:53,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:53,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035551044] [2024-06-21 20:52:53,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:53,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:53,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:53,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:53,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:53,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:53,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 164 transitions, 1569 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:53,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:53,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:53,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:53,643 INFO L124 PetriNetUnfolderBase]: 494/955 cut-off events. [2024-06-21 20:52:53,643 INFO L125 PetriNetUnfolderBase]: For 97328/97328 co-relation queries the response was YES. [2024-06-21 20:52:53,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5932 conditions, 955 events. 494/955 cut-off events. For 97328/97328 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5046 event pairs, 113 based on Foata normal form. 10/964 useless extension candidates. Maximal degree in co-relation 5829. Up to 711 conditions per place. [2024-06-21 20:52:53,650 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 129 selfloop transitions, 37 changer transitions 16/184 dead transitions. [2024-06-21 20:52:53,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 184 transitions, 2063 flow [2024-06-21 20:52:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:52:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:52:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 20:52:53,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 20:52:53,653 INFO L175 Difference]: Start difference. First operand has 214 places, 164 transitions, 1569 flow. Second operand 11 states and 120 transitions. [2024-06-21 20:52:53,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 184 transitions, 2063 flow [2024-06-21 20:52:53,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 184 transitions, 1792 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-21 20:52:53,831 INFO L231 Difference]: Finished difference. Result has 217 places, 158 transitions, 1362 flow [2024-06-21 20:52:53,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1362, PETRI_PLACES=217, PETRI_TRANSITIONS=158} [2024-06-21 20:52:53,831 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-21 20:52:53,831 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 158 transitions, 1362 flow [2024-06-21 20:52:53,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:53,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:53,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:53,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 20:52:53,832 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)] === [2024-06-21 20:52:53,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1326257573, now seen corresponding path program 8 times [2024-06-21 20:52:53,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:53,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370306827] [2024-06-21 20:52:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:53,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:54,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:54,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370306827] [2024-06-21 20:52:54,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370306827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:54,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:54,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017998080] [2024-06-21 20:52:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:54,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:54,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:54,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:54,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:54,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:54,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 158 transitions, 1362 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) [2024-06-21 20:52:54,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:54,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:54,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:54,862 INFO L124 PetriNetUnfolderBase]: 496/961 cut-off events. [2024-06-21 20:52:54,862 INFO L125 PetriNetUnfolderBase]: For 127286/127286 co-relation queries the response was YES. [2024-06-21 20:52:54,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 961 events. 496/961 cut-off events. For 127286/127286 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5051 event pairs, 119 based on Foata normal form. 8/968 useless extension candidates. Maximal degree in co-relation 6542. Up to 747 conditions per place. [2024-06-21 20:52:54,869 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 145 selfloop transitions, 25 changer transitions 8/180 dead transitions. [2024-06-21 20:52:54,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 180 transitions, 2023 flow [2024-06-21 20:52:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 20:52:54,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-21 20:52:54,870 INFO L175 Difference]: Start difference. First operand has 217 places, 158 transitions, 1362 flow. Second operand 10 states and 109 transitions. [2024-06-21 20:52:54,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 180 transitions, 2023 flow [2024-06-21 20:52:55,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 180 transitions, 1915 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-21 20:52:55,102 INFO L231 Difference]: Finished difference. Result has 209 places, 155 transitions, 1304 flow [2024-06-21 20:52:55,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1304, PETRI_PLACES=209, PETRI_TRANSITIONS=155} [2024-06-21 20:52:55,103 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-21 20:52:55,103 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 155 transitions, 1304 flow [2024-06-21 20:52:55,103 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) [2024-06-21 20:52:55,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:55,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:55,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 20:52:55,103 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)] === [2024-06-21 20:52:55,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1295930627, now seen corresponding path program 9 times [2024-06-21 20:52:55,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:55,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097039841] [2024-06-21 20:52:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:55,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:55,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:55,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097039841] [2024-06-21 20:52:55,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097039841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:55,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:55,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:52:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297883448] [2024-06-21 20:52:55,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:55,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:52:55,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:55,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:52:55,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:52:55,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:55,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 155 transitions, 1304 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) [2024-06-21 20:52:55,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:55,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:55,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:56,141 INFO L124 PetriNetUnfolderBase]: 489/948 cut-off events. [2024-06-21 20:52:56,142 INFO L125 PetriNetUnfolderBase]: For 113304/113304 co-relation queries the response was YES. [2024-06-21 20:52:56,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6386 conditions, 948 events. 489/948 cut-off events. For 113304/113304 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4987 event pairs, 123 based on Foata normal form. 8/955 useless extension candidates. Maximal degree in co-relation 6288. Up to 763 conditions per place. [2024-06-21 20:52:56,149 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 122 selfloop transitions, 36 changer transitions 12/172 dead transitions. [2024-06-21 20:52:56,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 172 transitions, 1722 flow [2024-06-21 20:52:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:52:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:52:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 20:52:56,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-21 20:52:56,150 INFO L175 Difference]: Start difference. First operand has 209 places, 155 transitions, 1304 flow. Second operand 11 states and 114 transitions. [2024-06-21 20:52:56,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 172 transitions, 1722 flow [2024-06-21 20:52:56,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 172 transitions, 1668 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 20:52:56,358 INFO L231 Difference]: Finished difference. Result has 207 places, 152 transitions, 1308 flow [2024-06-21 20:52:56,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1308, PETRI_PLACES=207, PETRI_TRANSITIONS=152} [2024-06-21 20:52:56,359 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-21 20:52:56,359 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 152 transitions, 1308 flow [2024-06-21 20:52:56,359 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) [2024-06-21 20:52:56,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:56,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:56,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 20:52:56,359 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)] === [2024-06-21 20:52:56,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1153528673, now seen corresponding path program 10 times [2024-06-21 20:52:56,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:56,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583091027] [2024-06-21 20:52:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:56,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:57,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:57,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583091027] [2024-06-21 20:52:57,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583091027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:57,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:57,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:57,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493491717] [2024-06-21 20:52:57,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:57,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:57,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:57,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:57,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:57,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:57,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 152 transitions, 1308 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:57,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:57,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:57,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:57,699 INFO L124 PetriNetUnfolderBase]: 485/940 cut-off events. [2024-06-21 20:52:57,699 INFO L125 PetriNetUnfolderBase]: For 112891/112891 co-relation queries the response was YES. [2024-06-21 20:52:57,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6334 conditions, 940 events. 485/940 cut-off events. For 112891/112891 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4916 event pairs, 122 based on Foata normal form. 10/949 useless extension candidates. Maximal degree in co-relation 6238. Up to 753 conditions per place. [2024-06-21 20:52:57,707 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 118 selfloop transitions, 43 changer transitions 7/170 dead transitions. [2024-06-21 20:52:57,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 170 transitions, 1732 flow [2024-06-21 20:52:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:52:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:52:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 20:52:57,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-21 20:52:57,708 INFO L175 Difference]: Start difference. First operand has 207 places, 152 transitions, 1308 flow. Second operand 10 states and 108 transitions. [2024-06-21 20:52:57,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 170 transitions, 1732 flow [2024-06-21 20:52:57,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 170 transitions, 1654 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 20:52:57,898 INFO L231 Difference]: Finished difference. Result has 202 places, 149 transitions, 1304 flow [2024-06-21 20:52:57,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1304, PETRI_PLACES=202, PETRI_TRANSITIONS=149} [2024-06-21 20:52:57,899 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-21 20:52:57,899 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 149 transitions, 1304 flow [2024-06-21 20:52:57,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:57,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:57,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:57,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 20:52:57,899 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)] === [2024-06-21 20:52:57,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1517329713, now seen corresponding path program 18 times [2024-06-21 20:52:57,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:57,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514011171] [2024-06-21 20:52:57,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:57,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:52:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:52:58,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:52:58,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514011171] [2024-06-21 20:52:58,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514011171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:52:58,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:52:58,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:52:58,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351741551] [2024-06-21 20:52:58,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:52:58,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:52:58,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:52:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:52:58,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:52:58,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:52:58,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 149 transitions, 1304 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:58,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:52:58,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:52:58,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:52:59,136 INFO L124 PetriNetUnfolderBase]: 443/861 cut-off events. [2024-06-21 20:52:59,136 INFO L125 PetriNetUnfolderBase]: For 83521/83521 co-relation queries the response was YES. [2024-06-21 20:52:59,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5148 conditions, 861 events. 443/861 cut-off events. For 83521/83521 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4438 event pairs, 130 based on Foata normal form. 12/872 useless extension candidates. Maximal degree in co-relation 5054. Up to 762 conditions per place. [2024-06-21 20:52:59,142 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 138 selfloop transitions, 20 changer transitions 5/165 dead transitions. [2024-06-21 20:52:59,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 165 transitions, 1710 flow [2024-06-21 20:52:59,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:52:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:52:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-21 20:52:59,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 20:52:59,143 INFO L175 Difference]: Start difference. First operand has 202 places, 149 transitions, 1304 flow. Second operand 11 states and 110 transitions. [2024-06-21 20:52:59,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 165 transitions, 1710 flow [2024-06-21 20:52:59,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 165 transitions, 1592 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-21 20:52:59,316 INFO L231 Difference]: Finished difference. Result has 201 places, 148 transitions, 1226 flow [2024-06-21 20:52:59,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1226, PETRI_PLACES=201, PETRI_TRANSITIONS=148} [2024-06-21 20:52:59,316 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-21 20:52:59,316 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 148 transitions, 1226 flow [2024-06-21 20:52:59,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:52:59,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:52:59,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:52:59,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 20:52:59,317 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)] === [2024-06-21 20:52:59,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:52:59,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1517575667, now seen corresponding path program 11 times [2024-06-21 20:52:59,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:52:59,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599936123] [2024-06-21 20:52:59,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:52:59,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:52:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:00,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:00,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599936123] [2024-06-21 20:53:00,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599936123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:00,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:00,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:53:00,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139823447] [2024-06-21 20:53:00,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:00,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:53:00,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:00,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:53:00,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:53:00,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:00,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 148 transitions, 1226 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) [2024-06-21 20:53:00,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:00,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:00,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:00,394 INFO L124 PetriNetUnfolderBase]: 472/928 cut-off events. [2024-06-21 20:53:00,394 INFO L125 PetriNetUnfolderBase]: For 93576/93576 co-relation queries the response was YES. [2024-06-21 20:53:00,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5902 conditions, 928 events. 472/928 cut-off events. For 93576/93576 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4880 event pairs, 145 based on Foata normal form. 8/935 useless extension candidates. Maximal degree in co-relation 5809. Up to 742 conditions per place. [2024-06-21 20:53:00,401 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 143 selfloop transitions, 14 changer transitions 9/168 dead transitions. [2024-06-21 20:53:00,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 168 transitions, 1802 flow [2024-06-21 20:53:00,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:53:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:53:00,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:53:00,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-21 20:53:00,402 INFO L175 Difference]: Start difference. First operand has 201 places, 148 transitions, 1226 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:53:00,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 168 transitions, 1802 flow [2024-06-21 20:53:00,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 168 transitions, 1756 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 20:53:00,567 INFO L231 Difference]: Finished difference. Result has 201 places, 144 transitions, 1181 flow [2024-06-21 20:53:00,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1181, PETRI_PLACES=201, PETRI_TRANSITIONS=144} [2024-06-21 20:53:00,568 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-21 20:53:00,568 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 144 transitions, 1181 flow [2024-06-21 20:53:00,568 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) [2024-06-21 20:53:00,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:00,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:00,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 20:53:00,568 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)] === [2024-06-21 20:53:00,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:00,569 INFO L85 PathProgramCache]: Analyzing trace with hash 952731045, now seen corresponding path program 12 times [2024-06-21 20:53:00,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:00,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052416549] [2024-06-21 20:53:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:00,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:01,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:01,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052416549] [2024-06-21 20:53:01,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052416549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:01,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:01,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:53:01,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272700578] [2024-06-21 20:53:01,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:01,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:53:01,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:01,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:53:01,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:53:01,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:01,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 144 transitions, 1181 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) [2024-06-21 20:53:01,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:01,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:01,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:01,539 INFO L124 PetriNetUnfolderBase]: 444/872 cut-off events. [2024-06-21 20:53:01,539 INFO L125 PetriNetUnfolderBase]: For 91647/91647 co-relation queries the response was YES. [2024-06-21 20:53:01,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5596 conditions, 872 events. 444/872 cut-off events. For 91647/91647 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4506 event pairs, 136 based on Foata normal form. 8/879 useless extension candidates. Maximal degree in co-relation 5502. Up to 711 conditions per place. [2024-06-21 20:53:01,544 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 140 selfloop transitions, 13 changer transitions 11/166 dead transitions. [2024-06-21 20:53:01,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 166 transitions, 1759 flow [2024-06-21 20:53:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:01,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:01,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 20:53:01,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-21 20:53:01,545 INFO L175 Difference]: Start difference. First operand has 201 places, 144 transitions, 1181 flow. Second operand 11 states and 113 transitions. [2024-06-21 20:53:01,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 166 transitions, 1759 flow [2024-06-21 20:53:01,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 166 transitions, 1689 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 20:53:01,698 INFO L231 Difference]: Finished difference. Result has 199 places, 140 transitions, 1124 flow [2024-06-21 20:53:01,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1124, PETRI_PLACES=199, PETRI_TRANSITIONS=140} [2024-06-21 20:53:01,699 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-21 20:53:01,699 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 140 transitions, 1124 flow [2024-06-21 20:53:01,699 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) [2024-06-21 20:53:01,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:01,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:01,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 20:53:01,699 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)] === [2024-06-21 20:53:01,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:01,700 INFO L85 PathProgramCache]: Analyzing trace with hash 288439007, now seen corresponding path program 13 times [2024-06-21 20:53:01,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:01,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777079988] [2024-06-21 20:53:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:01,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:02,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777079988] [2024-06-21 20:53:02,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777079988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:02,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:02,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:53:02,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503627890] [2024-06-21 20:53:02,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:02,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:53:02,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:02,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:53:02,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:53:02,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:02,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 140 transitions, 1124 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:02,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:02,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:02,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:02,862 INFO L124 PetriNetUnfolderBase]: 408/800 cut-off events. [2024-06-21 20:53:02,863 INFO L125 PetriNetUnfolderBase]: For 71813/71813 co-relation queries the response was YES. [2024-06-21 20:53:02,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4584 conditions, 800 events. 408/800 cut-off events. For 71813/71813 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4061 event pairs, 125 based on Foata normal form. 10/809 useless extension candidates. Maximal degree in co-relation 4492. Up to 711 conditions per place. [2024-06-21 20:53:02,868 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 127 selfloop transitions, 8 changer transitions 20/157 dead transitions. [2024-06-21 20:53:02,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 157 transitions, 1512 flow [2024-06-21 20:53:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:02,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-21 20:53:02,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-21 20:53:02,869 INFO L175 Difference]: Start difference. First operand has 199 places, 140 transitions, 1124 flow. Second operand 11 states and 105 transitions. [2024-06-21 20:53:02,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 157 transitions, 1512 flow [2024-06-21 20:53:02,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 157 transitions, 1480 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 20:53:02,974 INFO L231 Difference]: Finished difference. Result has 195 places, 132 transitions, 1058 flow [2024-06-21 20:53:02,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1058, PETRI_PLACES=195, PETRI_TRANSITIONS=132} [2024-06-21 20:53:02,975 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-21 20:53:02,975 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 132 transitions, 1058 flow [2024-06-21 20:53:02,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:02,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:02,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:02,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 20:53:02,975 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)] === [2024-06-21 20:53:02,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:02,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1744529739, now seen corresponding path program 19 times [2024-06-21 20:53:02,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:02,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835241363] [2024-06-21 20:53:02,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:02,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:03,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835241363] [2024-06-21 20:53:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835241363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:03,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:03,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:53:03,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112911272] [2024-06-21 20:53:03,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:03,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:53:03,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:53:03,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:53:03,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:03,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 132 transitions, 1058 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:03,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:03,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:03,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:04,136 INFO L124 PetriNetUnfolderBase]: 369/724 cut-off events. [2024-06-21 20:53:04,136 INFO L125 PetriNetUnfolderBase]: For 47281/47281 co-relation queries the response was YES. [2024-06-21 20:53:04,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4081 conditions, 724 events. 369/724 cut-off events. For 47281/47281 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3558 event pairs, 91 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 3991. Up to 641 conditions per place. [2024-06-21 20:53:04,141 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 115 selfloop transitions, 29 changer transitions 0/146 dead transitions. [2024-06-21 20:53:04,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 146 transitions, 1409 flow [2024-06-21 20:53:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:53:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:53:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 20:53:04,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-21 20:53:04,142 INFO L175 Difference]: Start difference. First operand has 195 places, 132 transitions, 1058 flow. Second operand 10 states and 102 transitions. [2024-06-21 20:53:04,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 146 transitions, 1409 flow [2024-06-21 20:53:04,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 146 transitions, 1367 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-21 20:53:04,232 INFO L231 Difference]: Finished difference. Result has 181 places, 133 transitions, 1109 flow [2024-06-21 20:53:04,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1109, PETRI_PLACES=181, PETRI_TRANSITIONS=133} [2024-06-21 20:53:04,233 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2024-06-21 20:53:04,233 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 133 transitions, 1109 flow [2024-06-21 20:53:04,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:04,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:04,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:04,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 20:53:04,233 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)] === [2024-06-21 20:53:04,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:04,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1319762453, now seen corresponding path program 14 times [2024-06-21 20:53:04,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:04,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172935308] [2024-06-21 20:53:04,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:04,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:05,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:05,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172935308] [2024-06-21 20:53:05,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172935308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:05,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:05,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:53:05,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613428256] [2024-06-21 20:53:05,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:05,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:53:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:05,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:53:05,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:53:05,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:05,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 133 transitions, 1109 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:05,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:05,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:05,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:05,415 INFO L124 PetriNetUnfolderBase]: 385/760 cut-off events. [2024-06-21 20:53:05,415 INFO L125 PetriNetUnfolderBase]: For 54388/54388 co-relation queries the response was YES. [2024-06-21 20:53:05,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4132 conditions, 760 events. 385/760 cut-off events. For 54388/54388 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3826 event pairs, 95 based on Foata normal form. 10/769 useless extension candidates. Maximal degree in co-relation 4048. Up to 631 conditions per place. [2024-06-21 20:53:05,420 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 109 selfloop transitions, 25 changer transitions 16/152 dead transitions. [2024-06-21 20:53:05,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 152 transitions, 1491 flow [2024-06-21 20:53:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:53:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:53:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-21 20:53:05,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3388888888888889 [2024-06-21 20:53:05,420 INFO L175 Difference]: Start difference. First operand has 181 places, 133 transitions, 1109 flow. Second operand 12 states and 122 transitions. [2024-06-21 20:53:05,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 152 transitions, 1491 flow [2024-06-21 20:53:05,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 152 transitions, 1413 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 20:53:05,514 INFO L231 Difference]: Finished difference. Result has 185 places, 127 transitions, 1046 flow [2024-06-21 20:53:05,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1046, PETRI_PLACES=185, PETRI_TRANSITIONS=127} [2024-06-21 20:53:05,514 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-21 20:53:05,514 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 127 transitions, 1046 flow [2024-06-21 20:53:05,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:05,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:05,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:05,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 20:53:05,515 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)] === [2024-06-21 20:53:05,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1326018563, now seen corresponding path program 15 times [2024-06-21 20:53:05,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:05,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516290231] [2024-06-21 20:53:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:05,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:06,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516290231] [2024-06-21 20:53:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516290231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:06,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:53:06,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189536132] [2024-06-21 20:53:06,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:06,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:53:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:53:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:53:06,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:06,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 127 transitions, 1046 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:06,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:06,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:06,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:06,679 INFO L124 PetriNetUnfolderBase]: 336/669 cut-off events. [2024-06-21 20:53:06,679 INFO L125 PetriNetUnfolderBase]: For 37806/37806 co-relation queries the response was YES. [2024-06-21 20:53:06,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3147 conditions, 669 events. 336/669 cut-off events. For 37806/37806 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3286 event pairs, 78 based on Foata normal form. 10/678 useless extension candidates. Maximal degree in co-relation 3062. Up to 556 conditions per place. [2024-06-21 20:53:06,684 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 106 selfloop transitions, 19 changer transitions 18/145 dead transitions. [2024-06-21 20:53:06,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 145 transitions, 1410 flow [2024-06-21 20:53:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:53:06,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:53:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-21 20:53:06,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3277777777777778 [2024-06-21 20:53:06,685 INFO L175 Difference]: Start difference. First operand has 185 places, 127 transitions, 1046 flow. Second operand 12 states and 118 transitions. [2024-06-21 20:53:06,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 145 transitions, 1410 flow [2024-06-21 20:53:06,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 145 transitions, 1350 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 20:53:06,740 INFO L231 Difference]: Finished difference. Result has 179 places, 120 transitions, 984 flow [2024-06-21 20:53:06,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=984, PETRI_PLACES=179, PETRI_TRANSITIONS=120} [2024-06-21 20:53:06,744 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-21 20:53:06,744 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 120 transitions, 984 flow [2024-06-21 20:53:06,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:06,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:06,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:06,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 20:53:06,745 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)] === [2024-06-21 20:53:06,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:06,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1319577879, now seen corresponding path program 20 times [2024-06-21 20:53:06,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:06,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093156510] [2024-06-21 20:53:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:06,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:07,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093156510] [2024-06-21 20:53:07,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093156510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:07,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:07,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:53:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087336718] [2024-06-21 20:53:07,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:07,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:53:07,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:53:07,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:53:07,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:07,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 120 transitions, 984 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:07,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:07,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:07,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:07,825 INFO L124 PetriNetUnfolderBase]: 298/595 cut-off events. [2024-06-21 20:53:07,825 INFO L125 PetriNetUnfolderBase]: For 17990/17990 co-relation queries the response was YES. [2024-06-21 20:53:07,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 595 events. 298/595 cut-off events. For 17990/17990 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2848 event pairs, 71 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 2604. Up to 537 conditions per place. [2024-06-21 20:53:07,828 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 110 selfloop transitions, 20 changer transitions 0/132 dead transitions. [2024-06-21 20:53:07,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 132 transitions, 1272 flow [2024-06-21 20:53:07,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:53:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:53:07,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-21 20:53:07,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-21 20:53:07,829 INFO L175 Difference]: Start difference. First operand has 179 places, 120 transitions, 984 flow. Second operand 10 states and 95 transitions. [2024-06-21 20:53:07,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 132 transitions, 1272 flow [2024-06-21 20:53:07,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 132 transitions, 1202 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-21 20:53:07,875 INFO L231 Difference]: Finished difference. Result has 168 places, 120 transitions, 958 flow [2024-06-21 20:53:07,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=958, PETRI_PLACES=168, PETRI_TRANSITIONS=120} [2024-06-21 20:53:07,876 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-21 20:53:07,876 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 120 transitions, 958 flow [2024-06-21 20:53:07,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:07,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:07,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:07,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 20:53:07,876 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)] === [2024-06-21 20:53:07,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1806229971, now seen corresponding path program 1 times [2024-06-21 20:53:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:07,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685356378] [2024-06-21 20:53:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:07,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:09,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:09,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685356378] [2024-06-21 20:53:09,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685356378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:09,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:09,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:09,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638169916] [2024-06-21 20:53:09,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:09,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:09,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:09,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:09,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:09,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:09,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 120 transitions, 958 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:09,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:09,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:09,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:09,579 INFO L124 PetriNetUnfolderBase]: 306/614 cut-off events. [2024-06-21 20:53:09,579 INFO L125 PetriNetUnfolderBase]: For 21252/21252 co-relation queries the response was YES. [2024-06-21 20:53:09,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2663 conditions, 614 events. 306/614 cut-off events. For 21252/21252 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2967 event pairs, 67 based on Foata normal form. 6/619 useless extension candidates. Maximal degree in co-relation 2585. Up to 485 conditions per place. [2024-06-21 20:53:09,582 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 100 selfloop transitions, 16 changer transitions 23/141 dead transitions. [2024-06-21 20:53:09,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 141 transitions, 1288 flow [2024-06-21 20:53:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:09,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-21 20:53:09,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-21 20:53:09,583 INFO L175 Difference]: Start difference. First operand has 168 places, 120 transitions, 958 flow. Second operand 11 states and 109 transitions. [2024-06-21 20:53:09,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 141 transitions, 1288 flow [2024-06-21 20:53:09,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 141 transitions, 1215 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 20:53:09,625 INFO L231 Difference]: Finished difference. Result has 169 places, 111 transitions, 857 flow [2024-06-21 20:53:09,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=857, PETRI_PLACES=169, PETRI_TRANSITIONS=111} [2024-06-21 20:53:09,625 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-21 20:53:09,625 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 111 transitions, 857 flow [2024-06-21 20:53:09,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:09,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:09,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:09,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 20:53:09,626 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)] === [2024-06-21 20:53:09,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:09,626 INFO L85 PathProgramCache]: Analyzing trace with hash -143548681, now seen corresponding path program 2 times [2024-06-21 20:53:09,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:09,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407600226] [2024-06-21 20:53:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:09,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:10,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:10,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407600226] [2024-06-21 20:53:10,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407600226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:10,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:10,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:10,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356758076] [2024-06-21 20:53:10,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:10,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:10,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:10,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:10,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:10,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:10,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 111 transitions, 857 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:10,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:10,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:10,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:11,221 INFO L124 PetriNetUnfolderBase]: 276/562 cut-off events. [2024-06-21 20:53:11,221 INFO L125 PetriNetUnfolderBase]: For 21968/21968 co-relation queries the response was YES. [2024-06-21 20:53:11,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 562 events. 276/562 cut-off events. For 21968/21968 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2674 event pairs, 47 based on Foata normal form. 6/567 useless extension candidates. Maximal degree in co-relation 2348. Up to 390 conditions per place. [2024-06-21 20:53:11,224 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 83 selfloop transitions, 22 changer transitions 23/130 dead transitions. [2024-06-21 20:53:11,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 130 transitions, 1161 flow [2024-06-21 20:53:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-21 20:53:11,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-21 20:53:11,225 INFO L175 Difference]: Start difference. First operand has 169 places, 111 transitions, 857 flow. Second operand 11 states and 106 transitions. [2024-06-21 20:53:11,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 130 transitions, 1161 flow [2024-06-21 20:53:11,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 130 transitions, 1111 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 20:53:11,260 INFO L231 Difference]: Finished difference. Result has 159 places, 98 transitions, 760 flow [2024-06-21 20:53:11,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=760, PETRI_PLACES=159, PETRI_TRANSITIONS=98} [2024-06-21 20:53:11,261 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-21 20:53:11,261 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 98 transitions, 760 flow [2024-06-21 20:53:11,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:11,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:11,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:11,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 20:53:11,261 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)] === [2024-06-21 20:53:11,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:11,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2132012019, now seen corresponding path program 3 times [2024-06-21 20:53:11,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:11,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735283979] [2024-06-21 20:53:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:11,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:12,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:12,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735283979] [2024-06-21 20:53:12,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735283979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:12,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:12,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:12,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783000791] [2024-06-21 20:53:12,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:12,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:12,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:12,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:12,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:12,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:12,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 98 transitions, 760 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:12,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:12,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:12,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:12,876 INFO L124 PetriNetUnfolderBase]: 236/494 cut-off events. [2024-06-21 20:53:12,876 INFO L125 PetriNetUnfolderBase]: For 19016/19016 co-relation queries the response was YES. [2024-06-21 20:53:12,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 494 events. 236/494 cut-off events. For 19016/19016 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2285 event pairs, 41 based on Foata normal form. 6/499 useless extension candidates. Maximal degree in co-relation 2102. Up to 324 conditions per place. [2024-06-21 20:53:12,879 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 75 selfloop transitions, 20 changer transitions 20/117 dead transitions. [2024-06-21 20:53:12,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 117 transitions, 1040 flow [2024-06-21 20:53:12,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-21 20:53:12,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-21 20:53:12,880 INFO L175 Difference]: Start difference. First operand has 159 places, 98 transitions, 760 flow. Second operand 11 states and 108 transitions. [2024-06-21 20:53:12,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 117 transitions, 1040 flow [2024-06-21 20:53:12,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 117 transitions, 980 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-21 20:53:12,906 INFO L231 Difference]: Finished difference. Result has 145 places, 86 transitions, 631 flow [2024-06-21 20:53:12,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=631, PETRI_PLACES=145, PETRI_TRANSITIONS=86} [2024-06-21 20:53:12,906 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-21 20:53:12,906 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 86 transitions, 631 flow [2024-06-21 20:53:12,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:12,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:12,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:12,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 20:53:12,907 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)] === [2024-06-21 20:53:12,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash -139829611, now seen corresponding path program 4 times [2024-06-21 20:53:12,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:12,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145645461] [2024-06-21 20:53:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:12,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:14,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:14,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145645461] [2024-06-21 20:53:14,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145645461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:14,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:14,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:14,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127615303] [2024-06-21 20:53:14,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:14,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:14,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:14,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:14,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:14,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:14,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 86 transitions, 631 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:14,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:14,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:14,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:14,767 INFO L124 PetriNetUnfolderBase]: 202/432 cut-off events. [2024-06-21 20:53:14,767 INFO L125 PetriNetUnfolderBase]: For 14212/14212 co-relation queries the response was YES. [2024-06-21 20:53:14,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 432 events. 202/432 cut-off events. For 14212/14212 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1924 event pairs, 41 based on Foata normal form. 6/437 useless extension candidates. Maximal degree in co-relation 1790. Up to 320 conditions per place. [2024-06-21 20:53:14,768 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 73 selfloop transitions, 18 changer transitions 9/102 dead transitions. [2024-06-21 20:53:14,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 102 transitions, 871 flow [2024-06-21 20:53:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-21 20:53:14,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31212121212121213 [2024-06-21 20:53:14,769 INFO L175 Difference]: Start difference. First operand has 145 places, 86 transitions, 631 flow. Second operand 11 states and 103 transitions. [2024-06-21 20:53:14,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 102 transitions, 871 flow [2024-06-21 20:53:14,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 102 transitions, 813 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-21 20:53:14,786 INFO L231 Difference]: Finished difference. Result has 137 places, 83 transitions, 591 flow [2024-06-21 20:53:14,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=591, PETRI_PLACES=137, PETRI_TRANSITIONS=83} [2024-06-21 20:53:14,787 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 108 predicate places. [2024-06-21 20:53:14,787 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 83 transitions, 591 flow [2024-06-21 20:53:14,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:14,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:14,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:14,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 20:53:14,787 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)] === [2024-06-21 20:53:14,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:14,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2131862289, now seen corresponding path program 5 times [2024-06-21 20:53:14,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:14,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887574248] [2024-06-21 20:53:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:14,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:15,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:15,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887574248] [2024-06-21 20:53:15,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887574248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:15,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:15,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:15,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957141536] [2024-06-21 20:53:15,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:15,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:15,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:15,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:15,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:16,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:16,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 83 transitions, 591 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:16,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:16,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:16,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:16,349 INFO L124 PetriNetUnfolderBase]: 191/415 cut-off events. [2024-06-21 20:53:16,349 INFO L125 PetriNetUnfolderBase]: For 12323/12323 co-relation queries the response was YES. [2024-06-21 20:53:16,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 415 events. 191/415 cut-off events. For 12323/12323 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1844 event pairs, 46 based on Foata normal form. 8/422 useless extension candidates. Maximal degree in co-relation 1588. Up to 293 conditions per place. [2024-06-21 20:53:16,350 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 60 selfloop transitions, 7 changer transitions 29/98 dead transitions. [2024-06-21 20:53:16,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 98 transitions, 821 flow [2024-06-21 20:53:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:16,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-21 20:53:16,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31212121212121213 [2024-06-21 20:53:16,351 INFO L175 Difference]: Start difference. First operand has 137 places, 83 transitions, 591 flow. Second operand 11 states and 103 transitions. [2024-06-21 20:53:16,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 98 transitions, 821 flow [2024-06-21 20:53:16,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 98 transitions, 781 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 20:53:16,364 INFO L231 Difference]: Finished difference. Result has 135 places, 65 transitions, 424 flow [2024-06-21 20:53:16,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=424, PETRI_PLACES=135, PETRI_TRANSITIONS=65} [2024-06-21 20:53:16,365 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2024-06-21 20:53:16,365 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 65 transitions, 424 flow [2024-06-21 20:53:16,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:16,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:16,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:16,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 20:53:16,365 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)] === [2024-06-21 20:53:16,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:16,365 INFO L85 PathProgramCache]: Analyzing trace with hash 965702805, now seen corresponding path program 6 times [2024-06-21 20:53:16,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:16,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291471026] [2024-06-21 20:53:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:16,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:17,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291471026] [2024-06-21 20:53:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291471026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:17,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:17,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100770410] [2024-06-21 20:53:17,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:17,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:17,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:17,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:17,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:17,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 65 transitions, 424 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:17,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:17,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:17,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:17,580 INFO L124 PetriNetUnfolderBase]: 155/333 cut-off events. [2024-06-21 20:53:17,580 INFO L125 PetriNetUnfolderBase]: For 9689/9689 co-relation queries the response was YES. [2024-06-21 20:53:17,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 333 events. 155/333 cut-off events. For 9689/9689 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1362 event pairs, 37 based on Foata normal form. 6/338 useless extension candidates. Maximal degree in co-relation 1214. Up to 249 conditions per place. [2024-06-21 20:53:17,582 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 51 selfloop transitions, 9 changer transitions 19/81 dead transitions. [2024-06-21 20:53:17,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 81 transitions, 622 flow [2024-06-21 20:53:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-21 20:53:17,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-21 20:53:17,583 INFO L175 Difference]: Start difference. First operand has 135 places, 65 transitions, 424 flow. Second operand 11 states and 100 transitions. [2024-06-21 20:53:17,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 81 transitions, 622 flow [2024-06-21 20:53:17,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 81 transitions, 551 flow, removed 9 selfloop flow, removed 18 redundant places. [2024-06-21 20:53:17,594 INFO L231 Difference]: Finished difference. Result has 111 places, 57 transitions, 334 flow [2024-06-21 20:53:17,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=334, PETRI_PLACES=111, PETRI_TRANSITIONS=57} [2024-06-21 20:53:17,594 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-21 20:53:17,594 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 57 transitions, 334 flow [2024-06-21 20:53:17,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:17,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:17,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:17,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 20:53:17,595 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)] === [2024-06-21 20:53:17,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash 370413845, now seen corresponding path program 7 times [2024-06-21 20:53:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:17,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881206110] [2024-06-21 20:53:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:18,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:18,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881206110] [2024-06-21 20:53:18,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881206110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:18,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:18,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:18,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866568807] [2024-06-21 20:53:18,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:18,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:18,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:18,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:18,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:18,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:18,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 57 transitions, 334 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:18,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:18,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:18,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:19,182 INFO L124 PetriNetUnfolderBase]: 137/295 cut-off events. [2024-06-21 20:53:19,182 INFO L125 PetriNetUnfolderBase]: For 7815/7815 co-relation queries the response was YES. [2024-06-21 20:53:19,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 295 events. 137/295 cut-off events. For 7815/7815 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1139 event pairs, 31 based on Foata normal form. 6/300 useless extension candidates. Maximal degree in co-relation 994. Up to 201 conditions per place. [2024-06-21 20:53:19,183 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 45 selfloop transitions, 11 changer transitions 16/74 dead transitions. [2024-06-21 20:53:19,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 74 transitions, 516 flow [2024-06-21 20:53:19,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:19,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-21 20:53:19,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30606060606060603 [2024-06-21 20:53:19,184 INFO L175 Difference]: Start difference. First operand has 111 places, 57 transitions, 334 flow. Second operand 11 states and 101 transitions. [2024-06-21 20:53:19,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 74 transitions, 516 flow [2024-06-21 20:53:19,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 74 transitions, 479 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 20:53:19,191 INFO L231 Difference]: Finished difference. Result has 100 places, 51 transitions, 294 flow [2024-06-21 20:53:19,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=294, PETRI_PLACES=100, PETRI_TRANSITIONS=51} [2024-06-21 20:53:19,191 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2024-06-21 20:53:19,191 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 51 transitions, 294 flow [2024-06-21 20:53:19,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:19,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:19,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:19,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 20:53:19,191 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)] === [2024-06-21 20:53:19,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:19,192 INFO L85 PathProgramCache]: Analyzing trace with hash -34680149, now seen corresponding path program 8 times [2024-06-21 20:53:19,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:19,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766345465] [2024-06-21 20:53:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:19,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:20,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:20,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766345465] [2024-06-21 20:53:20,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766345465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:20,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:20,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085816447] [2024-06-21 20:53:20,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:20,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:20,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:20,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:20,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:20,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 51 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:20,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:20,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:20,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:20,521 INFO L124 PetriNetUnfolderBase]: 117/259 cut-off events. [2024-06-21 20:53:20,521 INFO L125 PetriNetUnfolderBase]: For 6171/6171 co-relation queries the response was YES. [2024-06-21 20:53:20,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 259 events. 117/259 cut-off events. For 6171/6171 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 944 event pairs, 27 based on Foata normal form. 6/264 useless extension candidates. Maximal degree in co-relation 868. Up to 173 conditions per place. [2024-06-21 20:53:20,522 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 35 selfloop transitions, 3 changer transitions 28/68 dead transitions. [2024-06-21 20:53:20,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 68 transitions, 464 flow [2024-06-21 20:53:20,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-21 20:53:20,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-21 20:53:20,522 INFO L175 Difference]: Start difference. First operand has 100 places, 51 transitions, 294 flow. Second operand 11 states and 100 transitions. [2024-06-21 20:53:20,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 68 transitions, 464 flow [2024-06-21 20:53:20,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 68 transitions, 434 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 20:53:20,528 INFO L231 Difference]: Finished difference. Result has 93 places, 39 transitions, 213 flow [2024-06-21 20:53:20,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=213, PETRI_PLACES=93, PETRI_TRANSITIONS=39} [2024-06-21 20:53:20,528 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-21 20:53:20,529 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 39 transitions, 213 flow [2024-06-21 20:53:20,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:20,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:20,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:20,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 20:53:20,529 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)] === [2024-06-21 20:53:20,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash -392943189, now seen corresponding path program 9 times [2024-06-21 20:53:20,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:20,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658257850] [2024-06-21 20:53:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:20,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:21,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:21,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658257850] [2024-06-21 20:53:21,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658257850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:21,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:21,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:21,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651243285] [2024-06-21 20:53:21,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:21,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:21,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:21,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:21,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:21,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 39 transitions, 213 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:21,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:21,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:21,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:22,073 INFO L124 PetriNetUnfolderBase]: 92/201 cut-off events. [2024-06-21 20:53:22,073 INFO L125 PetriNetUnfolderBase]: For 5024/5024 co-relation queries the response was YES. [2024-06-21 20:53:22,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 201 events. 92/201 cut-off events. For 5024/5024 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 661 event pairs, 23 based on Foata normal form. 6/207 useless extension candidates. Maximal degree in co-relation 673. Up to 135 conditions per place. [2024-06-21 20:53:22,074 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 31 selfloop transitions, 10 changer transitions 11/54 dead transitions. [2024-06-21 20:53:22,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 54 transitions, 349 flow [2024-06-21 20:53:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:22,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:22,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-21 20:53:22,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-21 20:53:22,075 INFO L175 Difference]: Start difference. First operand has 93 places, 39 transitions, 213 flow. Second operand 11 states and 100 transitions. [2024-06-21 20:53:22,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 54 transitions, 349 flow [2024-06-21 20:53:22,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 54 transitions, 325 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-21 20:53:22,078 INFO L231 Difference]: Finished difference. Result has 75 places, 36 transitions, 198 flow [2024-06-21 20:53:22,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=198, PETRI_PLACES=75, PETRI_TRANSITIONS=36} [2024-06-21 20:53:22,079 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-21 20:53:22,079 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 36 transitions, 198 flow [2024-06-21 20:53:22,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:22,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:22,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:22,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 20:53:22,079 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)] === [2024-06-21 20:53:22,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash -818034549, now seen corresponding path program 10 times [2024-06-21 20:53:22,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:22,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018018737] [2024-06-21 20:53:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:22,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:23,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:23,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018018737] [2024-06-21 20:53:23,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018018737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:23,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:23,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:23,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558573186] [2024-06-21 20:53:23,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:23,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:23,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:23,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:23,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:23,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:23,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 36 transitions, 198 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:23,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:23,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:23,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:23,552 INFO L124 PetriNetUnfolderBase]: 82/183 cut-off events. [2024-06-21 20:53:23,552 INFO L125 PetriNetUnfolderBase]: For 3164/3164 co-relation queries the response was YES. [2024-06-21 20:53:23,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 183 events. 82/183 cut-off events. For 3164/3164 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 570 event pairs, 21 based on Foata normal form. 6/189 useless extension candidates. Maximal degree in co-relation 604. Up to 117 conditions per place. [2024-06-21 20:53:23,553 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 27 selfloop transitions, 8 changer transitions 14/51 dead transitions. [2024-06-21 20:53:23,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 51 transitions, 328 flow [2024-06-21 20:53:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-21 20:53:23,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-21 20:53:23,553 INFO L175 Difference]: Start difference. First operand has 75 places, 36 transitions, 198 flow. Second operand 11 states and 99 transitions. [2024-06-21 20:53:23,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 51 transitions, 328 flow [2024-06-21 20:53:23,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 51 transitions, 302 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 20:53:23,556 INFO L231 Difference]: Finished difference. Result has 71 places, 32 transitions, 173 flow [2024-06-21 20:53:23,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=173, PETRI_PLACES=71, PETRI_TRANSITIONS=32} [2024-06-21 20:53:23,556 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-21 20:53:23,556 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 32 transitions, 173 flow [2024-06-21 20:53:23,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:23,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:23,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:23,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 20:53:23,557 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)] === [2024-06-21 20:53:23,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:23,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1251826625, now seen corresponding path program 11 times [2024-06-21 20:53:23,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:23,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879072357] [2024-06-21 20:53:23,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:23,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:24,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:24,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879072357] [2024-06-21 20:53:24,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879072357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:24,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:24,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:24,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483944733] [2024-06-21 20:53:24,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:24,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:24,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:24,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:24,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 32 transitions, 173 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:24,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:24,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:24,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:25,055 INFO L124 PetriNetUnfolderBase]: 68/157 cut-off events. [2024-06-21 20:53:25,055 INFO L125 PetriNetUnfolderBase]: For 2630/2630 co-relation queries the response was YES. [2024-06-21 20:53:25,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 157 events. 68/157 cut-off events. For 2630/2630 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 460 event pairs, 17 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 518. Up to 91 conditions per place. [2024-06-21 20:53:25,056 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 22 selfloop transitions, 6 changer transitions 17/47 dead transitions. [2024-06-21 20:53:25,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 47 transitions, 295 flow [2024-06-21 20:53:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:25,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-21 20:53:25,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29393939393939394 [2024-06-21 20:53:25,056 INFO L175 Difference]: Start difference. First operand has 71 places, 32 transitions, 173 flow. Second operand 11 states and 97 transitions. [2024-06-21 20:53:25,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 47 transitions, 295 flow [2024-06-21 20:53:25,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 47 transitions, 271 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 20:53:25,058 INFO L231 Difference]: Finished difference. Result has 65 places, 27 transitions, 141 flow [2024-06-21 20:53:25,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=141, PETRI_PLACES=65, PETRI_TRANSITIONS=27} [2024-06-21 20:53:25,058 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-21 20:53:25,058 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 27 transitions, 141 flow [2024-06-21 20:53:25,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:25,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:25,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:25,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 20:53:25,059 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)] === [2024-06-21 20:53:25,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:25,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2042757717, now seen corresponding path program 12 times [2024-06-21 20:53:25,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:25,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031028668] [2024-06-21 20:53:25,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:25,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:26,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031028668] [2024-06-21 20:53:26,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031028668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:26,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:26,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:26,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685942710] [2024-06-21 20:53:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:26,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:26,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:26,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:26,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:26,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 27 transitions, 141 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:26,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:26,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:26,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:26,700 INFO L124 PetriNetUnfolderBase]: 52/125 cut-off events. [2024-06-21 20:53:26,700 INFO L125 PetriNetUnfolderBase]: For 1926/1926 co-relation queries the response was YES. [2024-06-21 20:53:26,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 125 events. 52/125 cut-off events. For 1926/1926 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 322 event pairs, 15 based on Foata normal form. 6/131 useless extension candidates. Maximal degree in co-relation 412. Up to 64 conditions per place. [2024-06-21 20:53:26,700 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 17 selfloop transitions, 4 changer transitions 18/41 dead transitions. [2024-06-21 20:53:26,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 41 transitions, 249 flow [2024-06-21 20:53:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:26,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-21 20:53:26,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2024-06-21 20:53:26,701 INFO L175 Difference]: Start difference. First operand has 65 places, 27 transitions, 141 flow. Second operand 11 states and 95 transitions. [2024-06-21 20:53:26,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 41 transitions, 249 flow [2024-06-21 20:53:26,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 227 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 20:53:26,702 INFO L231 Difference]: Finished difference. Result has 57 places, 21 transitions, 102 flow [2024-06-21 20:53:26,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=21} [2024-06-21 20:53:26,702 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-21 20:53:26,702 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 21 transitions, 102 flow [2024-06-21 20:53:26,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:26,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:53:26,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:26,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 20:53:26,703 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)] === [2024-06-21 20:53:26,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:53:26,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1312074253, now seen corresponding path program 13 times [2024-06-21 20:53:26,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:53:26,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474280483] [2024-06-21 20:53:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:53:26,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:53:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:53:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:53:27,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:53:27,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474280483] [2024-06-21 20:53:27,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474280483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:53:27,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:53:27,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:53:27,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428770909] [2024-06-21 20:53:27,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:53:27,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:53:27,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:53:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:53:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:53:27,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-21 20:53:27,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 21 transitions, 102 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:27,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:53:27,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-21 20:53:27,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:53:27,876 INFO L124 PetriNetUnfolderBase]: 23/62 cut-off events. [2024-06-21 20:53:27,876 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2024-06-21 20:53:27,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 62 events. 23/62 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 6/68 useless extension candidates. Maximal degree in co-relation 158. Up to 24 conditions per place. [2024-06-21 20:53:27,876 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-21 20:53:27,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 29 transitions, 144 flow [2024-06-21 20:53:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:53:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:53:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 83 transitions. [2024-06-21 20:53:27,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2515151515151515 [2024-06-21 20:53:27,877 INFO L175 Difference]: Start difference. First operand has 57 places, 21 transitions, 102 flow. Second operand 11 states and 83 transitions. [2024-06-21 20:53:27,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 29 transitions, 144 flow [2024-06-21 20:53:27,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 118 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-21 20:53:27,877 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-06-21 20:53:27,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2024-06-21 20:53:27,878 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-21 20:53:27,878 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-06-21 20:53:27,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:53:27,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 20:53:27,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 20:53:27,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 20:53:27,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 20:53:27,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 20:53:27,881 INFO L445 BasicCegarLoop]: Path program histogram: [20, 15, 13, 12, 11, 10, 6, 6, 6, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:53:27,883 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 20:53:27,883 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 20:53:27,885 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 20:53:27,886 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 20:53:27,886 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 08:53:27 BasicIcfg [2024-06-21 20:53:27,886 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 20:53:27,887 INFO L158 Benchmark]: Toolchain (without parser) took 146345.79ms. Allocated memory was 182.5MB in the beginning and 937.4MB in the end (delta: 755.0MB). Free memory was 108.0MB in the beginning and 716.1MB in the end (delta: -608.1MB). Peak memory consumption was 149.2MB. Max. memory is 16.1GB. [2024-06-21 20:53:27,887 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 20:53:27,887 INFO L158 Benchmark]: Witness Parser took 0.07ms. Allocated memory is still 182.5MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 20:53:27,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.59ms. Allocated memory is still 182.5MB. Free memory was 107.7MB in the beginning and 146.3MB in the end (delta: -38.5MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2024-06-21 20:53:27,887 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.30ms. Allocated memory is still 182.5MB. Free memory was 146.3MB in the beginning and 143.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 20:53:27,887 INFO L158 Benchmark]: Boogie Preprocessor took 65.83ms. Allocated memory is still 182.5MB. Free memory was 143.0MB in the beginning and 139.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 20:53:27,887 INFO L158 Benchmark]: RCFGBuilder took 536.58ms. Allocated memory is still 182.5MB. Free memory was 139.1MB in the beginning and 80.3MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-21 20:53:27,887 INFO L158 Benchmark]: TraceAbstraction took 145136.16ms. Allocated memory was 182.5MB in the beginning and 937.4MB in the end (delta: 755.0MB). Free memory was 79.2MB in the beginning and 716.1MB in the end (delta: -637.0MB). Peak memory consumption was 117.9MB. Max. memory is 16.1GB. [2024-06-21 20:53:27,888 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.07ms. Allocated memory is still 182.5MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.59ms. Allocated memory is still 182.5MB. Free memory was 107.7MB in the beginning and 146.3MB in the end (delta: -38.5MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.30ms. Allocated memory is still 182.5MB. Free memory was 146.3MB in the beginning and 143.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.83ms. Allocated memory is still 182.5MB. Free memory was 143.0MB in the beginning and 139.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 536.58ms. Allocated memory is still 182.5MB. Free memory was 139.1MB in the beginning and 80.3MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 145136.16ms. Allocated memory was 182.5MB in the beginning and 937.4MB in the end (delta: 755.0MB). Free memory was 79.2MB in the beginning and 716.1MB in the end (delta: -637.0MB). Peak memory consumption was 117.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 48 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 145.1s, OverallIterations: 125, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 49.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6330 SdHoareTripleChecker+Valid, 24.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5297 mSDsluCounter, 4174 SdHoareTripleChecker+Invalid, 20.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3537 mSDsCounter, 1422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41576 IncrementalHoareTripleChecker+Invalid, 42998 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1422 mSolverCounterUnsat, 637 mSDtfsCounter, 41576 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1303 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2554 ImplicationChecksByTransitivity, 31.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1959occurred in iteration=71, InterpolantAutomatonStates: 1160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 94.3s InterpolantComputationTime, 1944 NumberOfCodeBlocks, 1944 NumberOfCodeBlocksAsserted, 125 NumberOfCheckSat, 1819 ConstructedInterpolants, 0 QuantifiedInterpolants, 79592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 125 InterpolantComputations, 125 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 20:53:27,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE