./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stack_longer-2.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack_longer-2.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cb09d658 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/stack_longer-2.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack_longer-2.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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-cb09d65-m [2024-01-27 23:01:28,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 23:01:28,457 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 23:01:28,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 23:01:28,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 23:01:28,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 23:01:28,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 23:01:28,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 23:01:28,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 23:01:28,489 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 23:01:28,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 23:01:28,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 23:01:28,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 23:01:28,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 23:01:28,491 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 23:01:28,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 23:01:28,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 23:01:28,492 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 23:01:28,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 23:01:28,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 23:01:28,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 23:01:28,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 23:01:28,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 23:01:28,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 23:01:28,494 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 23:01:28,494 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 23:01:28,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 23:01:28,495 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 23:01:28,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 23:01:28,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 23:01:28,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 23:01:28,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 23:01:28,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 23:01:28,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 23:01:28,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 23:01:28,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 23:01:28,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 23:01:28,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 23:01:28,497 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 23:01:28,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 23:01:28,498 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 23:01:28,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 23:01:28,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 23:01:28,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 23:01:28,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 23:01:28,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 23:01:28,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 23:01:28,752 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 23:01:28,752 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 23:01:28,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2024-01-27 23:01:29,850 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 23:01:30,075 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 23:01:30,076 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2024-01-27 23:01:30,102 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2939027bb/40fe20aa3b0e40638c1863d54fb04998/FLAG32ac09b0d [2024-01-27 23:01:30,114 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2939027bb/40fe20aa3b0e40638c1863d54fb04998 [2024-01-27 23:01:30,116 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 23:01:30,117 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 23:01:30,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack_longer-2.yml/witness.yml [2024-01-27 23:01:30,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 23:01:30,257 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 23:01:30,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 23:01:30,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 23:01:30,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 23:01:30,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:01:30" (1/2) ... [2024-01-27 23:01:30,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbc805a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:01:30, skipping insertion in model container [2024-01-27 23:01:30,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:01:30" (1/2) ... [2024-01-27 23:01:30,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c5eb330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:01:30, skipping insertion in model container [2024-01-27 23:01:30,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 11:01:30" (2/2) ... [2024-01-27 23:01:30,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbc805a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30, skipping insertion in model container [2024-01-27 23:01:30,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 11:01:30" (2/2) ... [2024-01-27 23:01:30,265 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 23:01:30,308 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 23:01:30,309 INFO L98 nessWitnessExtractor]: Location invariant before [L1013-L1013] (((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || i == 7) || i == 6 [2024-01-27 23:01:30,309 INFO L98 nessWitnessExtractor]: Location invariant before [L1013-L1013] (unsigned long )arg == 0UL [2024-01-27 23:01:30,310 INFO L98 nessWitnessExtractor]: Location invariant before [L996-L997] ((((((((((i == 4 || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (0 == i && i == 0)) || (0 == i && i == 0)) || (5 <= i && i <= 399)) || (5 <= i && i <= 399)) || i == 4 [2024-01-27 23:01:30,310 INFO L98 nessWitnessExtractor]: Location invariant after [L996-L997] ((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 399)) || i == 4 [2024-01-27 23:01:30,310 INFO L98 nessWitnessExtractor]: Location invariant before [L996-L997] (unsigned long )arg == 0UL [2024-01-27 23:01:30,310 INFO L98 nessWitnessExtractor]: Location invariant after [L996-L997] (unsigned long )arg == 0UL [2024-01-27 23:01:30,311 INFO L98 nessWitnessExtractor]: Location invariant before [L1020-L1020] flag == (_Bool)0 [2024-01-27 23:01:30,311 INFO L98 nessWitnessExtractor]: Location invariant before [L1008-L1012] (unsigned long )arg == 0UL [2024-01-27 23:01:30,311 INFO L98 nessWitnessExtractor]: Location invariant before [L1008-L1012] (((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || i == 7) || i == 6 [2024-01-27 23:01:30,311 INFO L98 nessWitnessExtractor]: Loop invariant at [L1005-L1014] (unsigned long )arg == 0UL [2024-01-27 23:01:30,311 INFO L98 nessWitnessExtractor]: Loop invariant at [L991-L999] (unsigned long )arg == 0UL [2024-01-27 23:01:30,311 INFO L98 nessWitnessExtractor]: Location invariant before [L993-L993] ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 399) [2024-01-27 23:01:30,311 INFO L98 nessWitnessExtractor]: Location invariant before [L993-L993] (unsigned long )arg == 0UL [2024-01-27 23:01:30,311 INFO L98 nessWitnessExtractor]: Location invariant before [L1007-L1007] (((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || i == 7) || i == 6 [2024-01-27 23:01:30,312 INFO L98 nessWitnessExtractor]: Location invariant before [L1007-L1007] (unsigned long )arg == 0UL [2024-01-27 23:01:30,312 INFO L98 nessWitnessExtractor]: Location invariant before [L998-L998] (unsigned long )arg == 0UL [2024-01-27 23:01:30,312 INFO L98 nessWitnessExtractor]: Location invariant before [L998-L998] ((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 399)) || i == 4 [2024-01-27 23:01:30,312 INFO L98 nessWitnessExtractor]: Location invariant before [L994-L994] ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 399) [2024-01-27 23:01:30,312 INFO L98 nessWitnessExtractor]: Location invariant before [L994-L994] (unsigned long )arg == 0UL [2024-01-27 23:01:30,312 INFO L98 nessWitnessExtractor]: Location invariant before [L1021-L1021] flag == (_Bool)0 [2024-01-27 23:01:30,313 INFO L98 nessWitnessExtractor]: Location invariant before [L1015-L1015] i == 400 [2024-01-27 23:01:30,313 INFO L98 nessWitnessExtractor]: Location invariant before [L1015-L1015] (unsigned long )arg == 0UL [2024-01-27 23:01:30,313 INFO L98 nessWitnessExtractor]: Location invariant after [L1010-L1011] (((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || i == 7) || i == 6 [2024-01-27 23:01:30,313 INFO L98 nessWitnessExtractor]: Location invariant before [L1010-L1011] (unsigned long )arg == 0UL [2024-01-27 23:01:30,313 INFO L98 nessWitnessExtractor]: Location invariant before [L1010-L1011] (((((((((((((((i == 5 || i == 4) || i == 4) || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || i == 7) || i == 7) || i == 6) || i == 6 [2024-01-27 23:01:30,313 INFO L98 nessWitnessExtractor]: Location invariant after [L1010-L1011] (unsigned long )arg == 0UL [2024-01-27 23:01:30,313 INFO L98 nessWitnessExtractor]: Location invariant before [L995-L995] ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 399) [2024-01-27 23:01:30,314 INFO L98 nessWitnessExtractor]: Location invariant before [L995-L995] (unsigned long )arg == 0UL [2024-01-27 23:01:30,314 INFO L98 nessWitnessExtractor]: Location invariant before [L1000-L1000] i == 400 [2024-01-27 23:01:30,314 INFO L98 nessWitnessExtractor]: Location invariant before [L1000-L1000] (unsigned long )arg == 0UL [2024-01-27 23:01:30,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 23:01:30,684 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2024-01-27 23:01:30,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 23:01:30,722 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 23:01:30,752 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 23:01:30,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 23:01:30,839 INFO L206 MainTranslator]: Completed translation [2024-01-27 23:01:30,840 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30 WrapperNode [2024-01-27 23:01:30,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 23:01:30,841 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 23:01:30,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 23:01:30,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 23:01:30,846 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 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,866 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 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,897 INFO L138 Inliner]: procedures = 278, calls = 40, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 188 [2024-01-27 23:01:30,898 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 23:01:30,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 23:01:30,898 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 23:01:30,899 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 23:01:30,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,921 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,937 INFO L175 MemorySlicer]: Split 14 memory accesses to 5 slices as follows [2, 2, 2, 5, 3]. 36 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 5, 0]. The 4 writes are split as follows [0, 1, 1, 0, 2]. [2024-01-27 23:01:30,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,949 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,964 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 23:01:30,969 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 23:01:30,969 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 23:01:30,969 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 23:01:30,970 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30" (1/1) ... [2024-01-27 23:01:30,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 23:01:30,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:01:30,998 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) [2024-01-27 23:01:31,016 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 [2024-01-27 23:01:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-01-27 23:01:31,030 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-01-27 23:01:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-01-27 23:01:31,030 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-01-27 23:01:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 23:01:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 23:01:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 23:01:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 23:01:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 23:01:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 23:01:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 23:01:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 23:01:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 23:01:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 23:01:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 23:01:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 23:01:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 23:01:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 23:01:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 23:01:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 23:01:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 23:01:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 23:01:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 23:01:31,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 23:01:31,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 23:01:31,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 23:01:31,034 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 23:01:31,201 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 23:01:31,203 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 23:01:31,565 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 23:01:31,566 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 23:01:31,744 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 23:01:31,745 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-27 23:01:31,745 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:01:31 BoogieIcfgContainer [2024-01-27 23:01:31,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 23:01:31,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 23:01:31,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 23:01:31,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 23:01:31,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:01:30" (1/4) ... [2024-01-27 23:01:31,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325b36a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:01:31, skipping insertion in model container [2024-01-27 23:01:31,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 11:01:30" (2/4) ... [2024-01-27 23:01:31,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325b36a3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 11:01:31, skipping insertion in model container [2024-01-27 23:01:31,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:01:30" (3/4) ... [2024-01-27 23:01:31,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325b36a3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 11:01:31, skipping insertion in model container [2024-01-27 23:01:31,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:01:31" (4/4) ... [2024-01-27 23:01:31,752 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-01-27 23:01:31,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 23:01:31,765 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-01-27 23:01:31,765 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 23:01:31,829 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 23:01:31,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 99 transitions, 212 flow [2024-01-27 23:01:31,908 INFO L124 PetriNetUnfolderBase]: 5/97 cut-off events. [2024-01-27 23:01:31,908 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 23:01:31,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 5/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 314 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2024-01-27 23:01:31,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 99 transitions, 212 flow [2024-01-27 23:01:31,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 95 transitions, 199 flow [2024-01-27 23:01:31,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 23:01:31,937 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;@30e7e352, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 23:01:31,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2024-01-27 23:01:31,941 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 23:01:31,941 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-27 23:01:31,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 23:01:31,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:31,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-27 23:01:31,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:31,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash 15795, now seen corresponding path program 1 times [2024-01-27 23:01:31,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:31,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027183889] [2024-01-27 23:01:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:31,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:32,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:32,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027183889] [2024-01-27 23:01:32,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027183889] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:01:32,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:01:32,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 23:01:32,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409508445] [2024-01-27 23:01:32,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:01:32,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:01:32,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:32,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:01:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:01:32,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-27 23:01:32,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:32,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:32,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-27 23:01:32,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:32,499 INFO L124 PetriNetUnfolderBase]: 470/1557 cut-off events. [2024-01-27 23:01:32,499 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-01-27 23:01:32,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2337 conditions, 1557 events. 470/1557 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11594 event pairs, 357 based on Foata normal form. 48/1127 useless extension candidates. Maximal degree in co-relation 2193. Up to 740 conditions per place. [2024-01-27 23:01:32,515 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 28 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2024-01-27 23:01:32,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 91 transitions, 249 flow [2024-01-27 23:01:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:01:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:01:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2024-01-27 23:01:32,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2024-01-27 23:01:32,529 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 199 flow. Second operand 3 states and 225 transitions. [2024-01-27 23:01:32,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 91 transitions, 249 flow [2024-01-27 23:01:32,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 91 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 23:01:32,537 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 188 flow [2024-01-27 23:01:32,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-01-27 23:01:32,542 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -3 predicate places. [2024-01-27 23:01:32,543 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 188 flow [2024-01-27 23:01:32,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:32,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:32,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-27 23:01:32,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 23:01:32,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:32,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:32,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1716767669, now seen corresponding path program 1 times [2024-01-27 23:01:32,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:32,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514498297] [2024-01-27 23:01:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:32,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:32,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:32,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514498297] [2024-01-27 23:01:32,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514498297] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:01:32,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:01:32,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:01:32,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963056325] [2024-01-27 23:01:32,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:01:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:01:32,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:32,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:01:32,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:01:32,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 99 [2024-01-27 23:01:32,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:32,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:32,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 99 [2024-01-27 23:01:32,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:32,955 INFO L124 PetriNetUnfolderBase]: 472/1576 cut-off events. [2024-01-27 23:01:32,955 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-27 23:01:32,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 1576 events. 472/1576 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 11652 event pairs, 185 based on Foata normal form. 208/1413 useless extension candidates. Maximal degree in co-relation 2340. Up to 704 conditions per place. [2024-01-27 23:01:32,963 INFO L140 encePairwiseOnDemand]: 88/99 looper letters, 39 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-01-27 23:01:32,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 94 transitions, 278 flow [2024-01-27 23:01:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:01:32,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:01:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 278 transitions. [2024-01-27 23:01:32,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.702020202020202 [2024-01-27 23:01:32,969 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 188 flow. Second operand 4 states and 278 transitions. [2024-01-27 23:01:32,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 94 transitions, 278 flow [2024-01-27 23:01:32,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 94 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 23:01:32,971 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 173 flow [2024-01-27 23:01:32,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-01-27 23:01:32,972 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -10 predicate places. [2024-01-27 23:01:32,972 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 173 flow [2024-01-27 23:01:32,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:32,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:32,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:32,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 23:01:32,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:32,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash 546357003, now seen corresponding path program 1 times [2024-01-27 23:01:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:32,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894366028] [2024-01-27 23:01:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:32,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:33,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894366028] [2024-01-27 23:01:33,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894366028] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:01:33,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:01:33,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:01:33,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141926329] [2024-01-27 23:01:33,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:01:33,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:01:33,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:33,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:01:33,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:01:33,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 99 [2024-01-27 23:01:33,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:33,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:33,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 99 [2024-01-27 23:01:33,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:33,257 INFO L124 PetriNetUnfolderBase]: 452/1350 cut-off events. [2024-01-27 23:01:33,258 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-27 23:01:33,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 1350 events. 452/1350 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9447 event pairs, 18 based on Foata normal form. 182/1304 useless extension candidates. Maximal degree in co-relation 2082. Up to 594 conditions per place. [2024-01-27 23:01:33,265 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 52 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2024-01-27 23:01:33,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 99 transitions, 320 flow [2024-01-27 23:01:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:01:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:01:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-01-27 23:01:33,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7424242424242424 [2024-01-27 23:01:33,267 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 173 flow. Second operand 4 states and 294 transitions. [2024-01-27 23:01:33,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 99 transitions, 320 flow [2024-01-27 23:01:33,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 99 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:01:33,270 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 158 flow [2024-01-27 23:01:33,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-01-27 23:01:33,271 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -17 predicate places. [2024-01-27 23:01:33,271 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 158 flow [2024-01-27 23:01:33,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:33,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:33,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:33,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 23:01:33,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:33,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:33,273 INFO L85 PathProgramCache]: Analyzing trace with hash -244390318, now seen corresponding path program 1 times [2024-01-27 23:01:33,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:33,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872416852] [2024-01-27 23:01:33,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:33,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:33,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:33,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872416852] [2024-01-27 23:01:33,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872416852] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:01:33,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:01:33,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 23:01:33,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940624283] [2024-01-27 23:01:33,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:01:33,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:01:33,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:33,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:01:33,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:01:33,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 99 [2024-01-27 23:01:33,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:33,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:33,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 99 [2024-01-27 23:01:33,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:33,557 INFO L124 PetriNetUnfolderBase]: 903/2333 cut-off events. [2024-01-27 23:01:33,557 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-01-27 23:01:33,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3940 conditions, 2333 events. 903/2333 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 16357 event pairs, 539 based on Foata normal form. 80/1997 useless extension candidates. Maximal degree in co-relation 3934. Up to 1000 conditions per place. [2024-01-27 23:01:33,570 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 53 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-01-27 23:01:33,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 314 flow [2024-01-27 23:01:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:01:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:01:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-01-27 23:01:33,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2024-01-27 23:01:33,571 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 158 flow. Second operand 3 states and 242 transitions. [2024-01-27 23:01:33,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 314 flow [2024-01-27 23:01:33,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:01:33,574 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 179 flow [2024-01-27 23:01:33,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-01-27 23:01:33,576 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -16 predicate places. [2024-01-27 23:01:33,576 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 179 flow [2024-01-27 23:01:33,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:33,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:33,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:33,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 23:01:33,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:33,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:33,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1403989497, now seen corresponding path program 1 times [2024-01-27 23:01:33,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:33,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608845660] [2024-01-27 23:01:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:33,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:33,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:33,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608845660] [2024-01-27 23:01:33,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608845660] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:01:33,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:01:33,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 23:01:33,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916955055] [2024-01-27 23:01:33,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:01:33,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:01:33,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:01:33,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:01:33,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 99 [2024-01-27 23:01:33,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:33,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:33,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 99 [2024-01-27 23:01:33,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:33,947 INFO L124 PetriNetUnfolderBase]: 1333/3627 cut-off events. [2024-01-27 23:01:33,948 INFO L125 PetriNetUnfolderBase]: For 211/221 co-relation queries the response was YES. [2024-01-27 23:01:33,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6235 conditions, 3627 events. 1333/3627 cut-off events. For 211/221 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 28766 event pairs, 795 based on Foata normal form. 240/3543 useless extension candidates. Maximal degree in co-relation 6228. Up to 1535 conditions per place. [2024-01-27 23:01:33,969 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 54 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-01-27 23:01:33,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 96 transitions, 345 flow [2024-01-27 23:01:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:01:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:01:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2024-01-27 23:01:33,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2024-01-27 23:01:33,970 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 179 flow. Second operand 3 states and 243 transitions. [2024-01-27 23:01:33,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 96 transitions, 345 flow [2024-01-27 23:01:33,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 341 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 23:01:33,976 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 199 flow [2024-01-27 23:01:33,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2024-01-27 23:01:33,978 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -14 predicate places. [2024-01-27 23:01:33,978 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 199 flow [2024-01-27 23:01:33,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:33,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:33,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:33,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 23:01:33,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:33,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:33,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1688337316, now seen corresponding path program 1 times [2024-01-27 23:01:33,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:33,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947001847] [2024-01-27 23:01:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:33,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:34,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:34,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947001847] [2024-01-27 23:01:34,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947001847] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:01:34,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:01:34,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:01:34,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603006246] [2024-01-27 23:01:34,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:01:34,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:01:34,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:34,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:01:34,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:01:34,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 99 [2024-01-27 23:01:34,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:34,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:34,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 99 [2024-01-27 23:01:34,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:34,374 INFO L124 PetriNetUnfolderBase]: 925/2718 cut-off events. [2024-01-27 23:01:34,375 INFO L125 PetriNetUnfolderBase]: For 253/277 co-relation queries the response was YES. [2024-01-27 23:01:34,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4919 conditions, 2718 events. 925/2718 cut-off events. For 253/277 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 20530 event pairs, 116 based on Foata normal form. 20/2637 useless extension candidates. Maximal degree in co-relation 4911. Up to 1225 conditions per place. [2024-01-27 23:01:34,389 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 58 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2024-01-27 23:01:34,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 105 transitions, 405 flow [2024-01-27 23:01:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:01:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:01:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-01-27 23:01:34,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2024-01-27 23:01:34,391 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 199 flow. Second operand 4 states and 319 transitions. [2024-01-27 23:01:34,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 105 transitions, 405 flow [2024-01-27 23:01:34,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 23:01:34,396 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 219 flow [2024-01-27 23:01:34,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-01-27 23:01:34,398 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -10 predicate places. [2024-01-27 23:01:34,399 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 219 flow [2024-01-27 23:01:34,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:34,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:34,399 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:34,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 23:01:34,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:34,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:34,403 INFO L85 PathProgramCache]: Analyzing trace with hash -514290755, now seen corresponding path program 1 times [2024-01-27 23:01:34,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:34,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321197589] [2024-01-27 23:01:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:34,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:34,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:34,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321197589] [2024-01-27 23:01:34,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321197589] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:01:34,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602002894] [2024-01-27 23:01:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:34,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:01:34,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:01:34,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:01:34,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 23:01:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:34,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 23:01:34,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:01:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:34,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:01:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:34,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602002894] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:01:34,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:01:34,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2024-01-27 23:01:34,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182266880] [2024-01-27 23:01:34,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:01:34,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 23:01:34,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:34,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 23:01:34,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 23:01:34,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 99 [2024-01-27 23:01:34,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 58.166666666666664) internal successors, (349), 6 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:34,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:34,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 99 [2024-01-27 23:01:34,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:35,227 INFO L124 PetriNetUnfolderBase]: 2142/4939 cut-off events. [2024-01-27 23:01:35,227 INFO L125 PetriNetUnfolderBase]: For 1117/1167 co-relation queries the response was YES. [2024-01-27 23:01:35,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9772 conditions, 4939 events. 2142/4939 cut-off events. For 1117/1167 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 35676 event pairs, 387 based on Foata normal form. 416/5136 useless extension candidates. Maximal degree in co-relation 9761. Up to 1043 conditions per place. [2024-01-27 23:01:35,252 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 126 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2024-01-27 23:01:35,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 165 transitions, 739 flow [2024-01-27 23:01:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 23:01:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 23:01:35,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 458 transitions. [2024-01-27 23:01:35,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7710437710437711 [2024-01-27 23:01:35,254 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 219 flow. Second operand 6 states and 458 transitions. [2024-01-27 23:01:35,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 165 transitions, 739 flow [2024-01-27 23:01:35,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 165 transitions, 733 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 23:01:35,257 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 226 flow [2024-01-27 23:01:35,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-01-27 23:01:35,258 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -8 predicate places. [2024-01-27 23:01:35,258 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 226 flow [2024-01-27 23:01:35,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.166666666666664) internal successors, (349), 6 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:35,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:35,258 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:35,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-27 23:01:35,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:01:35,487 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:35,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash 539710309, now seen corresponding path program 1 times [2024-01-27 23:01:35,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:35,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248246763] [2024-01-27 23:01:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:35,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:35,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:35,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248246763] [2024-01-27 23:01:35,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248246763] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:01:35,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580264336] [2024-01-27 23:01:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:35,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:01:35,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:01:35,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:01:35,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 23:01:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:35,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 23:01:35,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:01:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:35,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:01:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:35,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580264336] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:01:35,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:01:35,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2024-01-27 23:01:35,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324279246] [2024-01-27 23:01:35,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:01:35,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 23:01:35,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 23:01:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 23:01:35,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 99 [2024-01-27 23:01:35,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:35,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:35,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 99 [2024-01-27 23:01:35,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:36,524 INFO L124 PetriNetUnfolderBase]: 2550/6053 cut-off events. [2024-01-27 23:01:36,524 INFO L125 PetriNetUnfolderBase]: For 2909/2909 co-relation queries the response was YES. [2024-01-27 23:01:36,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12247 conditions, 6053 events. 2550/6053 cut-off events. For 2909/2909 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 44503 event pairs, 316 based on Foata normal form. 644/6303 useless extension candidates. Maximal degree in co-relation 12233. Up to 1420 conditions per place. [2024-01-27 23:01:36,552 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 107 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2024-01-27 23:01:36,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 143 transitions, 702 flow [2024-01-27 23:01:36,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 23:01:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 23:01:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 452 transitions. [2024-01-27 23:01:36,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7609427609427609 [2024-01-27 23:01:36,554 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 226 flow. Second operand 6 states and 452 transitions. [2024-01-27 23:01:36,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 143 transitions, 702 flow [2024-01-27 23:01:36,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 143 transitions, 667 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-01-27 23:01:36,559 INFO L231 Difference]: Finished difference. Result has 89 places, 71 transitions, 224 flow [2024-01-27 23:01:36,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=89, PETRI_TRANSITIONS=71} [2024-01-27 23:01:36,560 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -8 predicate places. [2024-01-27 23:01:36,560 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 71 transitions, 224 flow [2024-01-27 23:01:36,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:36,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:36,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:36,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 23:01:36,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-01-27 23:01:36,780 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:36,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:36,781 INFO L85 PathProgramCache]: Analyzing trace with hash 794914412, now seen corresponding path program 1 times [2024-01-27 23:01:36,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:36,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335382981] [2024-01-27 23:01:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:36,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:36,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:36,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335382981] [2024-01-27 23:01:36,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335382981] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:01:36,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:01:36,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:01:36,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707823883] [2024-01-27 23:01:36,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:01:36,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:01:36,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:36,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:01:36,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:01:36,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 99 [2024-01-27 23:01:36,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 71 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:36,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:36,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 99 [2024-01-27 23:01:36,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:37,180 INFO L124 PetriNetUnfolderBase]: 1055/3418 cut-off events. [2024-01-27 23:01:37,180 INFO L125 PetriNetUnfolderBase]: For 2109/2109 co-relation queries the response was YES. [2024-01-27 23:01:37,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6887 conditions, 3418 events. 1055/3418 cut-off events. For 2109/2109 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 22173 event pairs, 297 based on Foata normal form. 168/3465 useless extension candidates. Maximal degree in co-relation 6870. Up to 1280 conditions per place. [2024-01-27 23:01:37,198 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 48 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2024-01-27 23:01:37,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 414 flow [2024-01-27 23:01:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:01:37,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:01:37,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-01-27 23:01:37,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2024-01-27 23:01:37,200 INFO L175 Difference]: Start difference. First operand has 89 places, 71 transitions, 224 flow. Second operand 3 states and 242 transitions. [2024-01-27 23:01:37,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 414 flow [2024-01-27 23:01:37,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 400 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-27 23:01:37,204 INFO L231 Difference]: Finished difference. Result has 89 places, 71 transitions, 225 flow [2024-01-27 23:01:37,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=89, PETRI_TRANSITIONS=71} [2024-01-27 23:01:37,204 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -8 predicate places. [2024-01-27 23:01:37,204 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 71 transitions, 225 flow [2024-01-27 23:01:37,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:37,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:37,205 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:37,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 23:01:37,205 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:37,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:37,205 INFO L85 PathProgramCache]: Analyzing trace with hash -63998545, now seen corresponding path program 1 times [2024-01-27 23:01:37,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:37,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099819168] [2024-01-27 23:01:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:37,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:37,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:37,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099819168] [2024-01-27 23:01:37,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099819168] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:01:37,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50414554] [2024-01-27 23:01:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:37,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:01:37,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:01:37,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:01:37,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 23:01:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:37,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-27 23:01:37,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:01:37,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-27 23:01:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:37,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:01:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:37,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50414554] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:01:37,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:01:37,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-01-27 23:01:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467314137] [2024-01-27 23:01:37,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:01:37,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 23:01:37,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:37,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 23:01:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-27 23:01:37,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-27 23:01:37,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 71 transitions, 225 flow. Second operand has 11 states, 11 states have (on average 68.63636363636364) internal successors, (755), 11 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:37,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:37,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-27 23:01:37,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:38,778 INFO L124 PetriNetUnfolderBase]: 3059/9172 cut-off events. [2024-01-27 23:01:38,778 INFO L125 PetriNetUnfolderBase]: For 6198/6198 co-relation queries the response was YES. [2024-01-27 23:01:38,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19782 conditions, 9172 events. 3059/9172 cut-off events. For 6198/6198 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 79049 event pairs, 591 based on Foata normal form. 58/9023 useless extension candidates. Maximal degree in co-relation 19765. Up to 1119 conditions per place. [2024-01-27 23:01:38,822 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 186 selfloop transitions, 19 changer transitions 0/239 dead transitions. [2024-01-27 23:01:38,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 239 transitions, 1330 flow [2024-01-27 23:01:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 23:01:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 23:01:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 948 transitions. [2024-01-27 23:01:38,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.797979797979798 [2024-01-27 23:01:38,825 INFO L175 Difference]: Start difference. First operand has 89 places, 71 transitions, 225 flow. Second operand 12 states and 948 transitions. [2024-01-27 23:01:38,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 239 transitions, 1330 flow [2024-01-27 23:01:38,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 239 transitions, 1308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 23:01:38,835 INFO L231 Difference]: Finished difference. Result has 105 places, 89 transitions, 355 flow [2024-01-27 23:01:38,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=355, PETRI_PLACES=105, PETRI_TRANSITIONS=89} [2024-01-27 23:01:38,835 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 8 predicate places. [2024-01-27 23:01:38,835 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 89 transitions, 355 flow [2024-01-27 23:01:38,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 68.63636363636364) internal successors, (755), 11 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:38,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:38,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:38,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 23:01:39,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:01:39,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:39,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1874444233, now seen corresponding path program 1 times [2024-01-27 23:01:39,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:39,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102636499] [2024-01-27 23:01:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:39,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:39,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:39,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102636499] [2024-01-27 23:01:39,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102636499] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:01:39,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:01:39,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 23:01:39,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529965754] [2024-01-27 23:01:39,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:01:39,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 23:01:39,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:39,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 23:01:39,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 23:01:39,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-27 23:01:39,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 89 transitions, 355 flow. Second operand has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:39,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:39,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-27 23:01:39,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:40,641 INFO L124 PetriNetUnfolderBase]: 3093/9275 cut-off events. [2024-01-27 23:01:40,641 INFO L125 PetriNetUnfolderBase]: For 8651/8651 co-relation queries the response was YES. [2024-01-27 23:01:40,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20942 conditions, 9275 events. 3093/9275 cut-off events. For 8651/8651 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 80908 event pairs, 779 based on Foata normal form. 12/9085 useless extension candidates. Maximal degree in co-relation 20917. Up to 3525 conditions per place. [2024-01-27 23:01:40,696 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 105 selfloop transitions, 13 changer transitions 0/152 dead transitions. [2024-01-27 23:01:40,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 152 transitions, 858 flow [2024-01-27 23:01:40,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 23:01:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 23:01:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2024-01-27 23:01:40,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7763347763347763 [2024-01-27 23:01:40,699 INFO L175 Difference]: Start difference. First operand has 105 places, 89 transitions, 355 flow. Second operand 7 states and 538 transitions. [2024-01-27 23:01:40,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 152 transitions, 858 flow [2024-01-27 23:01:40,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 152 transitions, 844 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-27 23:01:40,714 INFO L231 Difference]: Finished difference. Result has 115 places, 95 transitions, 433 flow [2024-01-27 23:01:40,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=115, PETRI_TRANSITIONS=95} [2024-01-27 23:01:40,715 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 18 predicate places. [2024-01-27 23:01:40,715 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 95 transitions, 433 flow [2024-01-27 23:01:40,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:40,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:40,715 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:40,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 23:01:40,716 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err14ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:40,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:40,716 INFO L85 PathProgramCache]: Analyzing trace with hash -384356354, now seen corresponding path program 1 times [2024-01-27 23:01:40,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:40,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749711381] [2024-01-27 23:01:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:40,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-01-27 23:01:40,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:40,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749711381] [2024-01-27 23:01:40,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749711381] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:01:40,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:01:40,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 23:01:40,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119400745] [2024-01-27 23:01:40,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:01:40,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 23:01:40,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 23:01:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 23:01:40,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 99 [2024-01-27 23:01:40,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 95 transitions, 433 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:40,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:40,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 99 [2024-01-27 23:01:40,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:42,077 INFO L124 PetriNetUnfolderBase]: 4839/12048 cut-off events. [2024-01-27 23:01:42,077 INFO L125 PetriNetUnfolderBase]: For 12458/12458 co-relation queries the response was YES. [2024-01-27 23:01:42,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29101 conditions, 12048 events. 4839/12048 cut-off events. For 12458/12458 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 101766 event pairs, 1224 based on Foata normal form. 0/11918 useless extension candidates. Maximal degree in co-relation 29070. Up to 5793 conditions per place. [2024-01-27 23:01:42,147 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 135 selfloop transitions, 7 changer transitions 3/180 dead transitions. [2024-01-27 23:01:42,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 180 transitions, 1230 flow [2024-01-27 23:01:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 23:01:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 23:01:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2024-01-27 23:01:42,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7555555555555555 [2024-01-27 23:01:42,149 INFO L175 Difference]: Start difference. First operand has 115 places, 95 transitions, 433 flow. Second operand 5 states and 374 transitions. [2024-01-27 23:01:42,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 180 transitions, 1230 flow [2024-01-27 23:01:42,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 180 transitions, 1230 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 23:01:42,174 INFO L231 Difference]: Finished difference. Result has 119 places, 95 transitions, 457 flow [2024-01-27 23:01:42,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=457, PETRI_PLACES=119, PETRI_TRANSITIONS=95} [2024-01-27 23:01:42,175 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 22 predicate places. [2024-01-27 23:01:42,175 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 95 transitions, 457 flow [2024-01-27 23:01:42,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:42,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:42,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:42,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 23:01:42,176 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:42,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:42,176 INFO L85 PathProgramCache]: Analyzing trace with hash 585864016, now seen corresponding path program 1 times [2024-01-27 23:01:42,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:42,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717394612] [2024-01-27 23:01:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:42,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:42,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:42,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:42,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717394612] [2024-01-27 23:01:42,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717394612] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:01:42,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933967947] [2024-01-27 23:01:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:42,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:01:42,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:01:42,813 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:01:42,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 23:01:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:42,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 11 conjunts are in the unsatisfiable core [2024-01-27 23:01:42,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:01:42,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-27 23:01:43,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-01-27 23:01:43,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2024-01-27 23:01:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:43,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:01:43,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2024-01-27 23:01:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933967947] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:01:43,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:01:43,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-01-27 23:01:43,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946287828] [2024-01-27 23:01:43,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:01:43,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-27 23:01:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:43,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-27 23:01:43,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-01-27 23:01:43,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-27 23:01:43,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 95 transitions, 457 flow. Second operand has 20 states, 20 states have (on average 67.75) internal successors, (1355), 20 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:43,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:43,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-27 23:01:43,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:47,783 INFO L124 PetriNetUnfolderBase]: 6117/18229 cut-off events. [2024-01-27 23:01:47,784 INFO L125 PetriNetUnfolderBase]: For 32466/32466 co-relation queries the response was YES. [2024-01-27 23:01:47,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45522 conditions, 18229 events. 6117/18229 cut-off events. For 32466/32466 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 164277 event pairs, 737 based on Foata normal form. 112/18171 useless extension candidates. Maximal degree in co-relation 45489. Up to 2108 conditions per place. [2024-01-27 23:01:47,917 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 470 selfloop transitions, 80 changer transitions 30/614 dead transitions. [2024-01-27 23:01:47,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 614 transitions, 4391 flow [2024-01-27 23:01:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-01-27 23:01:47,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-01-27 23:01:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3131 transitions. [2024-01-27 23:01:47,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7713722591771373 [2024-01-27 23:01:47,924 INFO L175 Difference]: Start difference. First operand has 119 places, 95 transitions, 457 flow. Second operand 41 states and 3131 transitions. [2024-01-27 23:01:47,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 614 transitions, 4391 flow [2024-01-27 23:01:47,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 614 transitions, 4153 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-01-27 23:01:47,980 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 1021 flow [2024-01-27 23:01:47,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1021, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2024-01-27 23:01:47,981 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 68 predicate places. [2024-01-27 23:01:47,982 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 1021 flow [2024-01-27 23:01:47,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 67.75) internal successors, (1355), 20 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:47,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:47,983 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:47,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-27 23:01:48,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:01:48,188 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err16ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:48,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:48,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1330494022, now seen corresponding path program 1 times [2024-01-27 23:01:48,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:48,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553238853] [2024-01-27 23:01:48,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:48,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-01-27 23:01:48,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:48,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553238853] [2024-01-27 23:01:48,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553238853] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:01:48,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:01:48,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 23:01:48,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124423941] [2024-01-27 23:01:48,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:01:48,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 23:01:48,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:48,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 23:01:48,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 23:01:48,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 99 [2024-01-27 23:01:48,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 163 transitions, 1021 flow. Second operand has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:48,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:48,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 99 [2024-01-27 23:01:48,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:01:50,923 INFO L124 PetriNetUnfolderBase]: 7581/19146 cut-off events. [2024-01-27 23:01:50,926 INFO L125 PetriNetUnfolderBase]: For 34265/34273 co-relation queries the response was YES. [2024-01-27 23:01:51,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51628 conditions, 19146 events. 7581/19146 cut-off events. For 34265/34273 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 163382 event pairs, 1534 based on Foata normal form. 0/18932 useless extension candidates. Maximal degree in co-relation 51586. Up to 9019 conditions per place. [2024-01-27 23:01:51,061 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 166 selfloop transitions, 7 changer transitions 2/222 dead transitions. [2024-01-27 23:01:51,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 222 transitions, 1724 flow [2024-01-27 23:01:51,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 23:01:51,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 23:01:51,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 373 transitions. [2024-01-27 23:01:51,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7535353535353535 [2024-01-27 23:01:51,063 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 1021 flow. Second operand 5 states and 373 transitions. [2024-01-27 23:01:51,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 222 transitions, 1724 flow [2024-01-27 23:01:51,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 222 transitions, 1608 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-01-27 23:01:51,137 INFO L231 Difference]: Finished difference. Result has 166 places, 163 transitions, 941 flow [2024-01-27 23:01:51,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=941, PETRI_PLACES=166, PETRI_TRANSITIONS=163} [2024-01-27 23:01:51,138 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 69 predicate places. [2024-01-27 23:01:51,138 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 163 transitions, 941 flow [2024-01-27 23:01:51,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:51,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:01:51,139 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:01:51,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 23:01:51,139 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:01:51,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:01:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash 226924999, now seen corresponding path program 1 times [2024-01-27 23:01:51,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:01:51,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663508429] [2024-01-27 23:01:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:51,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:01:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:52,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:01:52,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663508429] [2024-01-27 23:01:52,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663508429] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:01:52,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488106533] [2024-01-27 23:01:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:01:52,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:01:52,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:01:52,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:01:52,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-27 23:01:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:01:52,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-27 23:01:52,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:01:52,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-01-27 23:01:53,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2024-01-27 23:01:53,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 94 [2024-01-27 23:01:53,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 29 [2024-01-27 23:01:54,004 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 23:01:54,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 57 [2024-01-27 23:01:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:54,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:01:54,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 104 [2024-01-27 23:01:54,846 INFO L349 Elim1Store]: treesize reduction 43, result has 48.2 percent of original size [2024-01-27 23:01:54,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 104 treesize of output 136 [2024-01-27 23:01:54,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 23:01:54,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2024-01-27 23:01:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:01:55,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488106533] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:01:55,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:01:55,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 25 [2024-01-27 23:01:55,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91799386] [2024-01-27 23:01:55,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:01:55,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-01-27 23:01:55,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:01:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-01-27 23:01:55,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2024-01-27 23:01:55,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-27 23:01:55,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 163 transitions, 941 flow. Second operand has 26 states, 26 states have (on average 67.57692307692308) internal successors, (1757), 26 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:01:55,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:01:55,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-27 23:01:55,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:02:06,171 INFO L124 PetriNetUnfolderBase]: 14127/41192 cut-off events. [2024-01-27 23:02:06,171 INFO L125 PetriNetUnfolderBase]: For 100691/100691 co-relation queries the response was YES. [2024-01-27 23:02:06,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112285 conditions, 41192 events. 14127/41192 cut-off events. For 100691/100691 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 413067 event pairs, 1739 based on Foata normal form. 204/41082 useless extension candidates. Maximal degree in co-relation 112243. Up to 4812 conditions per place. [2024-01-27 23:02:06,534 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 636 selfloop transitions, 265 changer transitions 85/1020 dead transitions. [2024-01-27 23:02:06,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1020 transitions, 7927 flow [2024-01-27 23:02:06,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-01-27 23:02:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2024-01-27 23:02:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 4798 transitions. [2024-01-27 23:02:06,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.757260101010101 [2024-01-27 23:02:06,544 INFO L175 Difference]: Start difference. First operand has 166 places, 163 transitions, 941 flow. Second operand 64 states and 4798 transitions. [2024-01-27 23:02:06,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 1020 transitions, 7927 flow [2024-01-27 23:02:06,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 1020 transitions, 7799 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-01-27 23:02:06,787 INFO L231 Difference]: Finished difference. Result has 252 places, 376 transitions, 3403 flow [2024-01-27 23:02:06,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=3403, PETRI_PLACES=252, PETRI_TRANSITIONS=376} [2024-01-27 23:02:06,787 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 155 predicate places. [2024-01-27 23:02:06,788 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 376 transitions, 3403 flow [2024-01-27 23:02:06,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 67.57692307692308) internal successors, (1757), 26 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:02:06,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:02:06,788 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:02:06,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-01-27 23:02:06,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-01-27 23:02:06,992 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:02:06,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:02:06,993 INFO L85 PathProgramCache]: Analyzing trace with hash 490767841, now seen corresponding path program 1 times [2024-01-27 23:02:06,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:02:06,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800793717] [2024-01-27 23:02:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:02:06,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:02:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:02:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-01-27 23:02:07,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:02:07,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800793717] [2024-01-27 23:02:07,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800793717] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:02:07,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425024660] [2024-01-27 23:02:07,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:02:07,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:02:07,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:02:07,209 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:02:07,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-27 23:02:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:02:07,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-27 23:02:07,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:02:07,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-27 23:02:07,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-27 23:02:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:02:07,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:02:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-01-27 23:02:07,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425024660] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:02:07,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:02:07,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 16 [2024-01-27 23:02:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101534141] [2024-01-27 23:02:07,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:02:07,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-27 23:02:07,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:02:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-27 23:02:07,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-01-27 23:02:07,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-27 23:02:07,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 376 transitions, 3403 flow. Second operand has 16 states, 16 states have (on average 69.625) internal successors, (1114), 16 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:02:07,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:02:07,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-27 23:02:07,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:02:18,609 INFO L124 PetriNetUnfolderBase]: 17279/50426 cut-off events. [2024-01-27 23:02:18,609 INFO L125 PetriNetUnfolderBase]: For 201912/201912 co-relation queries the response was YES. [2024-01-27 23:02:19,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148473 conditions, 50426 events. 17279/50426 cut-off events. For 201912/201912 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 508600 event pairs, 2443 based on Foata normal form. 212/50271 useless extension candidates. Maximal degree in co-relation 148405. Up to 5844 conditions per place. [2024-01-27 23:02:19,325 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 523 selfloop transitions, 182 changer transitions 31/770 dead transitions. [2024-01-27 23:02:19,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 770 transitions, 7690 flow [2024-01-27 23:02:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-01-27 23:02:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-01-27 23:02:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1879 transitions. [2024-01-27 23:02:19,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7908249158249159 [2024-01-27 23:02:19,328 INFO L175 Difference]: Start difference. First operand has 252 places, 376 transitions, 3403 flow. Second operand 24 states and 1879 transitions. [2024-01-27 23:02:19,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 770 transitions, 7690 flow [2024-01-27 23:02:20,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 770 transitions, 7380 flow, removed 150 selfloop flow, removed 4 redundant places. [2024-01-27 23:02:20,075 INFO L231 Difference]: Finished difference. Result has 283 places, 431 transitions, 4391 flow [2024-01-27 23:02:20,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4391, PETRI_PLACES=283, PETRI_TRANSITIONS=431} [2024-01-27 23:02:20,075 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 186 predicate places. [2024-01-27 23:02:20,075 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 431 transitions, 4391 flow [2024-01-27 23:02:20,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 69.625) internal successors, (1114), 16 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:02:20,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:02:20,076 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:02:20,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-27 23:02:20,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-01-27 23:02:20,278 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-27 23:02:20,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:02:20,279 INFO L85 PathProgramCache]: Analyzing trace with hash -708972900, now seen corresponding path program 2 times [2024-01-27 23:02:20,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:02:20,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689474189] [2024-01-27 23:02:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:02:20,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:02:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:02:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:02:20,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:02:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689474189] [2024-01-27 23:02:20,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689474189] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 23:02:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666804767] [2024-01-27 23:02:20,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 23:02:20,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 23:02:20,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:02:20,694 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 23:02:20,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-27 23:02:21,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 23:02:21,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 23:02:21,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 11 conjunts are in the unsatisfiable core [2024-01-27 23:02:21,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 23:02:21,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-27 23:02:21,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-27 23:02:21,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-27 23:02:21,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-27 23:02:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:02:21,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 23:02:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:02:21,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666804767] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 23:02:21,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 23:02:21,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2024-01-27 23:02:21,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132126353] [2024-01-27 23:02:21,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 23:02:21,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-27 23:02:21,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:02:21,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-27 23:02:21,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2024-01-27 23:02:21,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-27 23:02:21,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 431 transitions, 4391 flow. Second operand has 20 states, 20 states have (on average 69.3) internal successors, (1386), 20 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:02:21,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:02:21,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-27 23:02:21,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand