./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stateful01-2.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/stateful01-2.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/stateful01-2.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stateful01-2.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-a340643-m [2024-01-27 14:46:23,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 14:46:23,559 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 14:46:23,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 14:46:23,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 14:46:23,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 14:46:23,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 14:46:23,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 14:46:23,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 14:46:23,601 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 14:46:23,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 14:46:23,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 14:46:23,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 14:46:23,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 14:46:23,603 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 14:46:23,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 14:46:23,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 14:46:23,604 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 14:46:23,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 14:46:23,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 14:46:23,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 14:46:23,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 14:46:23,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 14:46:23,606 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 14:46:23,607 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 14:46:23,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 14:46:23,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 14:46:23,607 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 14:46:23,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 14:46:23,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 14:46:23,609 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 14:46:23,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 14:46:23,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:46:23,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 14:46:23,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 14:46:23,610 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 14:46:23,610 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 14:46:23,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 14:46:23,610 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 14:46:23,611 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 14:46:23,611 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 14:46:23,611 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 14:46:23,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 14:46:23,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 14:46:23,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 14:46:23,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 14:46:23,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 14:46:23,789 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 14:46:23,790 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 14:46:23,791 INFO L431 ainManager$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/stateful01-2.yml/witness.yml [2024-01-27 14:46:23,908 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 14:46:23,908 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 14:46:23,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2024-01-27 14:46:24,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 14:46:25,075 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 14:46:25,083 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2024-01-27 14:46:25,096 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/637a8a6db/cbda985e0cc44eaa868a3594830c38f1/FLAG15c20860b [2024-01-27 14:46:25,108 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/637a8a6db/cbda985e0cc44eaa868a3594830c38f1 [2024-01-27 14:46:25,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 14:46:25,110 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 14:46:25,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 14:46:25,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 14:46:25,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 14:46:25,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:46:23" (1/2) ... [2024-01-27 14:46:25,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525542a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:46:25, skipping insertion in model container [2024-01-27 14:46:25,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:46:23" (1/2) ... [2024-01-27 14:46:25,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6568d94e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:46:25, skipping insertion in model container [2024-01-27 14:46:25,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:46:25" (2/2) ... [2024-01-27 14:46:25,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525542a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25, skipping insertion in model container [2024-01-27 14:46:25,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:46:25" (2/2) ... [2024-01-27 14:46:25,118 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 14:46:25,154 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 14:46:25,156 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] 10 <= data1 [2024-01-27 14:46:25,156 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] (unsigned long )arg == 0UL [2024-01-27 14:46:25,156 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] data1 == 0 [2024-01-27 14:46:25,156 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] data2 == 0 [2024-01-27 14:46:25,156 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] (unsigned long )arg == 0UL [2024-01-27 14:46:25,157 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] 15 <= data1 [2024-01-27 14:46:25,157 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] data2 == 10 [2024-01-27 14:46:25,157 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] data1 == 10 [2024-01-27 14:46:25,157 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L696] (unsigned long )arg == 0UL [2024-01-27 14:46:25,157 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] data2 == 0 [2024-01-27 14:46:25,157 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] data1 == 10 [2024-01-27 14:46:25,157 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] 10 <= data1 [2024-01-27 14:46:25,158 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] (unsigned long )arg == 0UL [2024-01-27 14:46:25,158 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] data2 == 0 [2024-01-27 14:46:25,158 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] data1 == 0 [2024-01-27 14:46:25,158 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] (unsigned long )arg == 0UL [2024-01-27 14:46:25,158 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] 10 <= data1 [2024-01-27 14:46:25,158 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] 10 <= data1 [2024-01-27 14:46:25,158 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (unsigned long )arg == 0UL [2024-01-27 14:46:25,158 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] data1 == 0 [2024-01-27 14:46:25,159 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] data2 == 0 [2024-01-27 14:46:25,159 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (unsigned long )arg == 0UL [2024-01-27 14:46:25,159 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] (unsigned long )arg == 0UL [2024-01-27 14:46:25,159 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] (unsigned long )arg == 0UL [2024-01-27 14:46:25,159 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (unsigned long )arg == 0UL [2024-01-27 14:46:25,159 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L712] (unsigned long )arg == 0UL [2024-01-27 14:46:25,160 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] -2147483647 <= data2 [2024-01-27 14:46:25,160 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] (unsigned long )arg == 0UL [2024-01-27 14:46:25,160 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] 10 <= data1 [2024-01-27 14:46:25,160 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] data2 <= 2147483641 [2024-01-27 14:46:25,160 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] (unsigned long )arg == 0UL [2024-01-27 14:46:25,160 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] 10 <= data1 [2024-01-27 14:46:25,160 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] (unsigned long )arg == 0UL [2024-01-27 14:46:25,160 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] 11 <= data1 [2024-01-27 14:46:25,195 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 14:46:25,461 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/stateful01-2.i[30826,30839] [2024-01-27 14:46:25,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:46:25,474 INFO L202 MainTranslator]: Completed pre-run 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 14:46:25,541 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/stateful01-2.i[30826,30839] [2024-01-27 14:46:25,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:46:25,565 INFO L206 MainTranslator]: Completed translation [2024-01-27 14:46:25,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25 WrapperNode [2024-01-27 14:46:25,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 14:46:25,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 14:46:25,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 14:46:25,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 14:46:25,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,616 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 72 [2024-01-27 14:46:25,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 14:46:25,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 14:46:25,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 14:46:25,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 14:46:25,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,647 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 5, 5, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0]. The 2 writes are split as follows [0, 1, 0, 0, 1]. [2024-01-27 14:46:25,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 14:46:25,678 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 14:46:25,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 14:46:25,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 14:46:25,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (1/1) ... [2024-01-27 14:46:25,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:46:25,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 14:46:25,704 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 14:46:25,728 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 14:46:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 14:46:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 14:46:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 14:46:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 14:46:25,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 14:46:25,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 14:46:25,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 14:46:25,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 14:46:25,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 14:46:25,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 14:46:25,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 14:46:25,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 14:46:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 14:46:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 14:46:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 14:46:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 14:46:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 14:46:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 14:46:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 14:46:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 14:46:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 14:46:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 14:46:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 14:46:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 14:46:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 14:46:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 14:46:25,742 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 14:46:25,865 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 14:46:25,866 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 14:46:26,061 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 14:46:26,061 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 14:46:26,141 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 14:46:26,142 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 14:46:26,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:46:26 BoogieIcfgContainer [2024-01-27 14:46:26,142 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 14:46:26,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 14:46:26,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 14:46:26,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 14:46:26,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:46:23" (1/4) ... [2024-01-27 14:46:26,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5c5dfa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:46:26, skipping insertion in model container [2024-01-27 14:46:26,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 02:46:25" (2/4) ... [2024-01-27 14:46:26,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5c5dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:46:26, skipping insertion in model container [2024-01-27 14:46:26,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:46:25" (3/4) ... [2024-01-27 14:46:26,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5c5dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:46:26, skipping insertion in model container [2024-01-27 14:46:26,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:46:26" (4/4) ... [2024-01-27 14:46:26,149 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2024-01-27 14:46:26,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 14:46:26,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2024-01-27 14:46:26,162 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 14:46:26,237 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 14:46:26,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 102 transitions, 218 flow [2024-01-27 14:46:26,311 INFO L124 PetriNetUnfolderBase]: 1/100 cut-off events. [2024-01-27 14:46:26,311 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 14:46:26,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 1/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 144 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2024-01-27 14:46:26,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 102 transitions, 218 flow [2024-01-27 14:46:26,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 97 transitions, 206 flow [2024-01-27 14:46:26,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 14:46:26,332 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;@2693bf5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 14:46:26,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-01-27 14:46:26,334 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 14:46:26,335 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-27 14:46:26,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:46:26,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:26,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-27 14:46:26,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:26,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:26,341 INFO L85 PathProgramCache]: Analyzing trace with hash 9952, now seen corresponding path program 1 times [2024-01-27 14:46:26,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:26,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208715131] [2024-01-27 14:46:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:26,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:26,559 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 14:46:26,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:26,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208715131] [2024-01-27 14:46:26,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208715131] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:26,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:26,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:46:26,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471139939] [2024-01-27 14:46:26,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:26,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:46:26,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:26,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:46:26,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:46:26,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 102 [2024-01-27 14:46:26,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 14:46:26,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:26,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 102 [2024-01-27 14:46:26,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:26,876 INFO L124 PetriNetUnfolderBase]: 327/1091 cut-off events. [2024-01-27 14:46:26,877 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-01-27 14:46:26,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 1091 events. 327/1091 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7098 event pairs, 327 based on Foata normal form. 0/921 useless extension candidates. Maximal degree in co-relation 1602. Up to 596 conditions per place. [2024-01-27 14:46:26,891 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 33 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-01-27 14:46:26,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 270 flow [2024-01-27 14:46:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:46:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:46:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-01-27 14:46:26,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7320261437908496 [2024-01-27 14:46:26,905 INFO L175 Difference]: Start difference. First operand has 104 places, 97 transitions, 206 flow. Second operand 3 states and 224 transitions. [2024-01-27 14:46:26,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 270 flow [2024-01-27 14:46:26,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 94 transitions, 262 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 14:46:26,913 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 196 flow [2024-01-27 14:46:26,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2024-01-27 14:46:26,920 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -5 predicate places. [2024-01-27 14:46:26,921 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 196 flow [2024-01-27 14:46:26,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 14:46:26,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:26,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-27 14:46:26,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 14:46:26,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:26,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:26,926 INFO L85 PathProgramCache]: Analyzing trace with hash 308815, now seen corresponding path program 1 times [2024-01-27 14:46:26,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:26,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605356516] [2024-01-27 14:46:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:26,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:26,994 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 14:46:26,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:26,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605356516] [2024-01-27 14:46:26,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605356516] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:26,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:26,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:46:26,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76295159] [2024-01-27 14:46:26,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:26,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:46:26,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:26,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:46:26,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:46:27,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 102 [2024-01-27 14:46:27,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 94 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 14:46:27,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:27,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 102 [2024-01-27 14:46:27,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:27,115 INFO L124 PetriNetUnfolderBase]: 240/706 cut-off events. [2024-01-27 14:46:27,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:46:27,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 706 events. 240/706 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4449 event pairs, 240 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 1150. Up to 442 conditions per place. [2024-01-27 14:46:27,121 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 29 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-01-27 14:46:27,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 90 transitions, 250 flow [2024-01-27 14:46:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:46:27,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:46:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2024-01-27 14:46:27,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7516339869281046 [2024-01-27 14:46:27,126 INFO L175 Difference]: Start difference. First operand has 99 places, 94 transitions, 196 flow. Second operand 3 states and 230 transitions. [2024-01-27 14:46:27,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 90 transitions, 250 flow [2024-01-27 14:46:27,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:46:27,129 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 188 flow [2024-01-27 14:46:27,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2024-01-27 14:46:27,130 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -9 predicate places. [2024-01-27 14:46:27,130 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 188 flow [2024-01-27 14:46:27,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 14:46:27,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:27,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:46:27,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 14:46:27,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:27,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:27,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1884864004, now seen corresponding path program 1 times [2024-01-27 14:46:27,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:27,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142313230] [2024-01-27 14:46:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:27,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:27,193 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 14:46:27,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:27,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142313230] [2024-01-27 14:46:27,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142313230] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:27,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:27,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:46:27,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551940093] [2024-01-27 14:46:27,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:27,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:46:27,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:27,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:46:27,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:46:27,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 102 [2024-01-27 14:46:27,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 188 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 14:46:27,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:27,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 102 [2024-01-27 14:46:27,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:27,394 INFO L124 PetriNetUnfolderBase]: 412/1209 cut-off events. [2024-01-27 14:46:27,394 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-01-27 14:46:27,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 1209 events. 412/1209 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8123 event pairs, 203 based on Foata normal form. 0/977 useless extension candidates. Maximal degree in co-relation 1951. Up to 723 conditions per place. [2024-01-27 14:46:27,400 INFO L140 encePairwiseOnDemand]: 95/102 looper letters, 42 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2024-01-27 14:46:27,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 95 transitions, 289 flow [2024-01-27 14:46:27,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:46:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:46:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2024-01-27 14:46:27,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7483660130718954 [2024-01-27 14:46:27,402 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 188 flow. Second operand 3 states and 229 transitions. [2024-01-27 14:46:27,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 95 transitions, 289 flow [2024-01-27 14:46:27,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:46:27,404 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 201 flow [2024-01-27 14:46:27,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2024-01-27 14:46:27,405 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -10 predicate places. [2024-01-27 14:46:27,405 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 201 flow [2024-01-27 14:46:27,405 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 14:46:27,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:27,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:46:27,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 14:46:27,406 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:27,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:27,407 INFO L85 PathProgramCache]: Analyzing trace with hash 419201516, now seen corresponding path program 1 times [2024-01-27 14:46:27,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:27,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822696794] [2024-01-27 14:46:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:27,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:46:27,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:27,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822696794] [2024-01-27 14:46:27,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822696794] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:27,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:27,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:46:27,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502823013] [2024-01-27 14:46:27,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:27,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:46:27,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:27,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:46:27,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:46:27,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 102 [2024-01-27 14:46:27,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 14:46:27,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:27,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 102 [2024-01-27 14:46:27,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:27,563 INFO L124 PetriNetUnfolderBase]: 240/783 cut-off events. [2024-01-27 14:46:27,563 INFO L125 PetriNetUnfolderBase]: For 44/66 co-relation queries the response was YES. [2024-01-27 14:46:27,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 783 events. 240/783 cut-off events. For 44/66 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4770 event pairs, 90 based on Foata normal form. 0/646 useless extension candidates. Maximal degree in co-relation 978. Up to 322 conditions per place. [2024-01-27 14:46:27,568 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 43 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2024-01-27 14:46:27,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 102 transitions, 322 flow [2024-01-27 14:46:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:46:27,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:46:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2024-01-27 14:46:27,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8137254901960784 [2024-01-27 14:46:27,569 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 201 flow. Second operand 3 states and 249 transitions. [2024-01-27 14:46:27,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 102 transitions, 322 flow [2024-01-27 14:46:27,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 102 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 14:46:27,574 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 213 flow [2024-01-27 14:46:27,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2024-01-27 14:46:27,576 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -9 predicate places. [2024-01-27 14:46:27,576 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 213 flow [2024-01-27 14:46:27,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 14:46:27,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:27,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:46:27,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 14:46:27,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:27,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1332084932, now seen corresponding path program 1 times [2024-01-27 14:46:27,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:27,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756280929] [2024-01-27 14:46:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:27,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:46:27,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756280929] [2024-01-27 14:46:27,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756280929] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:27,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:27,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:46:27,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801978850] [2024-01-27 14:46:27,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:27,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:46:27,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:27,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:46:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:46:27,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 102 [2024-01-27 14:46:27,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 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 14:46:27,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:27,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 102 [2024-01-27 14:46:27,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:27,838 INFO L124 PetriNetUnfolderBase]: 213/865 cut-off events. [2024-01-27 14:46:27,839 INFO L125 PetriNetUnfolderBase]: For 83/93 co-relation queries the response was YES. [2024-01-27 14:46:27,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1394 conditions, 865 events. 213/865 cut-off events. For 83/93 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5558 event pairs, 101 based on Foata normal form. 108/804 useless extension candidates. Maximal degree in co-relation 553. Up to 367 conditions per place. [2024-01-27 14:46:27,842 INFO L140 encePairwiseOnDemand]: 93/102 looper letters, 40 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-01-27 14:46:27,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 94 transitions, 309 flow [2024-01-27 14:46:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:46:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:46:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2024-01-27 14:46:27,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7475490196078431 [2024-01-27 14:46:27,844 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 213 flow. Second operand 4 states and 305 transitions. [2024-01-27 14:46:27,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 94 transitions, 309 flow [2024-01-27 14:46:27,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 94 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 14:46:27,846 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 200 flow [2024-01-27 14:46:27,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2024-01-27 14:46:27,846 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -14 predicate places. [2024-01-27 14:46:27,846 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 200 flow [2024-01-27 14:46:27,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 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 14:46:27,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:27,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:46:27,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 14:46:27,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:27,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash -234538837, now seen corresponding path program 1 times [2024-01-27 14:46:27,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:27,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137519885] [2024-01-27 14:46:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:27,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:27,904 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 14:46:27,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:27,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137519885] [2024-01-27 14:46:27,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137519885] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:27,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:27,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:46:27,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758685979] [2024-01-27 14:46:27,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:27,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:46:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:27,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:46:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:46:27,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 102 [2024-01-27 14:46:27,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 14:46:27,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:27,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 102 [2024-01-27 14:46:27,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:28,020 INFO L124 PetriNetUnfolderBase]: 213/654 cut-off events. [2024-01-27 14:46:28,021 INFO L125 PetriNetUnfolderBase]: For 74/90 co-relation queries the response was YES. [2024-01-27 14:46:28,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 654 events. 213/654 cut-off events. For 74/90 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3793 event pairs, 49 based on Foata normal form. 108/714 useless extension candidates. Maximal degree in co-relation 1126. Up to 337 conditions per place. [2024-01-27 14:46:28,024 INFO L140 encePairwiseOnDemand]: 93/102 looper letters, 47 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-01-27 14:46:28,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 327 flow [2024-01-27 14:46:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:46:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:46:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2024-01-27 14:46:28,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2024-01-27 14:46:28,025 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 200 flow. Second operand 4 states and 312 transitions. [2024-01-27 14:46:28,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 327 flow [2024-01-27 14:46:28,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 94 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:46:28,027 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 187 flow [2024-01-27 14:46:28,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-01-27 14:46:28,028 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -20 predicate places. [2024-01-27 14:46:28,028 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 187 flow [2024-01-27 14:46:28,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 14:46:28,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:28,029 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 14:46:28,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 14:46:28,029 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:28,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1734321806, now seen corresponding path program 1 times [2024-01-27 14:46:28,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:28,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500048212] [2024-01-27 14:46:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:28,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:46:28,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:28,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500048212] [2024-01-27 14:46:28,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500048212] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:28,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:28,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:46:28,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189647067] [2024-01-27 14:46:28,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:28,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:46:28,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:28,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:46:28,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:46:28,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-01-27 14:46:28,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 14:46:28,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:28,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-01-27 14:46:28,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:28,173 INFO L124 PetriNetUnfolderBase]: 327/876 cut-off events. [2024-01-27 14:46:28,173 INFO L125 PetriNetUnfolderBase]: For 92/96 co-relation queries the response was YES. [2024-01-27 14:46:28,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1600 conditions, 876 events. 327/876 cut-off events. For 92/96 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4932 event pairs, 143 based on Foata normal form. 22/843 useless extension candidates. Maximal degree in co-relation 1568. Up to 571 conditions per place. [2024-01-27 14:46:28,176 INFO L140 encePairwiseOnDemand]: 92/102 looper letters, 41 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-01-27 14:46:28,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 270 flow [2024-01-27 14:46:28,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:46:28,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:46:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2024-01-27 14:46:28,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6691176470588235 [2024-01-27 14:46:28,178 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 187 flow. Second operand 4 states and 273 transitions. [2024-01-27 14:46:28,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 270 flow [2024-01-27 14:46:28,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:46:28,180 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 172 flow [2024-01-27 14:46:28,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2024-01-27 14:46:28,180 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -26 predicate places. [2024-01-27 14:46:28,180 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 172 flow [2024-01-27 14:46:28,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 14:46:28,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:28,181 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] [2024-01-27 14:46:28,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 14:46:28,181 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:28,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:28,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1415217760, now seen corresponding path program 1 times [2024-01-27 14:46:28,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:28,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514433049] [2024-01-27 14:46:28,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:28,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:28,215 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 14:46:28,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:28,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514433049] [2024-01-27 14:46:28,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514433049] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:28,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:28,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:46:28,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540231348] [2024-01-27 14:46:28,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:28,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:46:28,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:28,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:46:28,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:46:28,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-01-27 14:46:28,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 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 14:46:28,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:28,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-01-27 14:46:28,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:28,336 INFO L124 PetriNetUnfolderBase]: 327/884 cut-off events. [2024-01-27 14:46:28,336 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-01-27 14:46:28,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 884 events. 327/884 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4871 event pairs, 63 based on Foata normal form. 0/841 useless extension candidates. Maximal degree in co-relation 1576. Up to 457 conditions per place. [2024-01-27 14:46:28,340 INFO L140 encePairwiseOnDemand]: 99/102 looper letters, 48 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-01-27 14:46:28,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 81 transitions, 299 flow [2024-01-27 14:46:28,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:46:28,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:46:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-01-27 14:46:28,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.678921568627451 [2024-01-27 14:46:28,342 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 172 flow. Second operand 4 states and 277 transitions. [2024-01-27 14:46:28,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 81 transitions, 299 flow [2024-01-27 14:46:28,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:46:28,343 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 172 flow [2024-01-27 14:46:28,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-01-27 14:46:28,344 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -26 predicate places. [2024-01-27 14:46:28,344 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 172 flow [2024-01-27 14:46:28,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 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 14:46:28,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:28,345 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] [2024-01-27 14:46:28,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 14:46:28,345 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:28,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:28,345 INFO L85 PathProgramCache]: Analyzing trace with hash -595792375, now seen corresponding path program 1 times [2024-01-27 14:46:28,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:28,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183076211] [2024-01-27 14:46:28,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:28,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:28,390 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 14:46:28,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:28,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183076211] [2024-01-27 14:46:28,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183076211] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:28,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:28,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:46:28,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065744141] [2024-01-27 14:46:28,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:28,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:46:28,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:28,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:46:28,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:46:28,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 102 [2024-01-27 14:46:28,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 14:46:28,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:28,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 102 [2024-01-27 14:46:28,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:28,499 INFO L124 PetriNetUnfolderBase]: 221/602 cut-off events. [2024-01-27 14:46:28,499 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-01-27 14:46:28,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 602 events. 221/602 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3188 event pairs, 68 based on Foata normal form. 14/579 useless extension candidates. Maximal degree in co-relation 1113. Up to 147 conditions per place. [2024-01-27 14:46:28,502 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 51 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2024-01-27 14:46:28,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 338 flow [2024-01-27 14:46:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:46:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:46:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2024-01-27 14:46:28,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8014705882352942 [2024-01-27 14:46:28,504 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 172 flow. Second operand 4 states and 327 transitions. [2024-01-27 14:46:28,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 338 flow [2024-01-27 14:46:28,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 90 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:46:28,505 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 183 flow [2024-01-27 14:46:28,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-01-27 14:46:28,507 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -24 predicate places. [2024-01-27 14:46:28,507 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 183 flow [2024-01-27 14:46:28,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 14:46:28,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:28,508 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] [2024-01-27 14:46:28,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 14:46:28,508 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:28,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:28,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1931389560, now seen corresponding path program 1 times [2024-01-27 14:46:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:28,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723955795] [2024-01-27 14:46:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:28,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:46:28,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:28,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723955795] [2024-01-27 14:46:28,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723955795] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:28,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:28,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:46:28,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2227486] [2024-01-27 14:46:28,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:28,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:46:28,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:28,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:46:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:46:28,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2024-01-27 14:46:28,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 14:46:28,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:28,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2024-01-27 14:46:28,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:28,679 INFO L124 PetriNetUnfolderBase]: 230/641 cut-off events. [2024-01-27 14:46:28,679 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-01-27 14:46:28,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 641 events. 230/641 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3438 event pairs, 91 based on Foata normal form. 20/615 useless extension candidates. Maximal degree in co-relation 1228. Up to 176 conditions per place. [2024-01-27 14:46:28,683 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 50 selfloop transitions, 7 changer transitions 0/91 dead transitions. [2024-01-27 14:46:28,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 91 transitions, 351 flow [2024-01-27 14:46:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:46:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:46:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2024-01-27 14:46:28,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8161764705882353 [2024-01-27 14:46:28,684 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 183 flow. Second operand 4 states and 333 transitions. [2024-01-27 14:46:28,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 91 transitions, 351 flow [2024-01-27 14:46:28,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 91 transitions, 342 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 14:46:28,688 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 207 flow [2024-01-27 14:46:28,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-01-27 14:46:28,690 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -21 predicate places. [2024-01-27 14:46:28,691 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 207 flow [2024-01-27 14:46:28,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 14:46:28,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:28,691 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:46:28,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 14:46:28,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:28,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:28,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1434952835, now seen corresponding path program 1 times [2024-01-27 14:46:28,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:28,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687595396] [2024-01-27 14:46:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:28,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:28,782 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 14:46:28,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:28,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687595396] [2024-01-27 14:46:28,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687595396] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:28,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:28,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:46:28,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409321980] [2024-01-27 14:46:28,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:28,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:46:28,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:28,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:46:28,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:46:28,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 102 [2024-01-27 14:46:28,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 14:46:28,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:28,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 102 [2024-01-27 14:46:28,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:28,854 INFO L124 PetriNetUnfolderBase]: 115/493 cut-off events. [2024-01-27 14:46:28,854 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-01-27 14:46:28,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 493 events. 115/493 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2332 event pairs, 45 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 868. Up to 144 conditions per place. [2024-01-27 14:46:28,856 INFO L140 encePairwiseOnDemand]: 94/102 looper letters, 30 selfloop transitions, 8 changer transitions 0/76 dead transitions. [2024-01-27 14:46:28,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 292 flow [2024-01-27 14:46:28,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:46:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:46:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-01-27 14:46:28,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8398692810457516 [2024-01-27 14:46:28,858 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 207 flow. Second operand 3 states and 257 transitions. [2024-01-27 14:46:28,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 292 flow [2024-01-27 14:46:28,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 273 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-27 14:46:28,860 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 197 flow [2024-01-27 14:46:28,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-01-27 14:46:28,861 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -23 predicate places. [2024-01-27 14:46:28,861 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 197 flow [2024-01-27 14:46:28,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 14:46:28,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:28,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:46:28,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 14:46:28,862 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:28,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:28,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1463062187, now seen corresponding path program 1 times [2024-01-27 14:46:28,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:28,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820932465] [2024-01-27 14:46:28,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:28,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:28,965 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 14:46:28,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:28,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820932465] [2024-01-27 14:46:28,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820932465] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:28,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:28,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 14:46:28,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731412203] [2024-01-27 14:46:28,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:28,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 14:46:28,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 14:46:28,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-27 14:46:28,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2024-01-27 14:46:28,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 14:46:28,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:28,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2024-01-27 14:46:28,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:29,064 INFO L124 PetriNetUnfolderBase]: 119/454 cut-off events. [2024-01-27 14:46:29,064 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-01-27 14:46:29,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 454 events. 119/454 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2045 event pairs, 49 based on Foata normal form. 6/432 useless extension candidates. Maximal degree in co-relation 856. Up to 100 conditions per place. [2024-01-27 14:46:29,066 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 48 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-01-27 14:46:29,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 89 transitions, 367 flow [2024-01-27 14:46:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 14:46:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 14:46:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2024-01-27 14:46:29,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7823529411764706 [2024-01-27 14:46:29,068 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 197 flow. Second operand 5 states and 399 transitions. [2024-01-27 14:46:29,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 89 transitions, 367 flow [2024-01-27 14:46:29,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:46:29,070 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 193 flow [2024-01-27 14:46:29,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-01-27 14:46:29,070 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -22 predicate places. [2024-01-27 14:46:29,070 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 193 flow [2024-01-27 14:46:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 14:46:29,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:29,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:46:29,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 14:46:29,071 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:29,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash -478832956, now seen corresponding path program 1 times [2024-01-27 14:46:29,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:29,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252487820] [2024-01-27 14:46:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:29,134 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 14:46:29,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:29,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252487820] [2024-01-27 14:46:29,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252487820] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:29,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:29,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 14:46:29,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402221684] [2024-01-27 14:46:29,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:29,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 14:46:29,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:29,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 14:46:29,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-27 14:46:29,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2024-01-27 14:46:29,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 14:46:29,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:29,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2024-01-27 14:46:29,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:29,231 INFO L124 PetriNetUnfolderBase]: 115/434 cut-off events. [2024-01-27 14:46:29,232 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-01-27 14:46:29,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 434 events. 115/434 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1972 event pairs, 65 based on Foata normal form. 4/400 useless extension candidates. Maximal degree in co-relation 803. Up to 145 conditions per place. [2024-01-27 14:46:29,233 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 44 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2024-01-27 14:46:29,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 322 flow [2024-01-27 14:46:29,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 14:46:29,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 14:46:29,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 391 transitions. [2024-01-27 14:46:29,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2024-01-27 14:46:29,235 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 193 flow. Second operand 5 states and 391 transitions. [2024-01-27 14:46:29,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 322 flow [2024-01-27 14:46:29,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 82 transitions, 306 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-27 14:46:29,236 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 179 flow [2024-01-27 14:46:29,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-01-27 14:46:29,237 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -24 predicate places. [2024-01-27 14:46:29,237 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 179 flow [2024-01-27 14:46:29,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 14:46:29,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:29,238 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, 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 14:46:29,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 14:46:29,238 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:29,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:29,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1403162609, now seen corresponding path program 1 times [2024-01-27 14:46:29,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:29,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296882264] [2024-01-27 14:46:29,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:29,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:46:29,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296882264] [2024-01-27 14:46:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296882264] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:29,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 14:46:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824656205] [2024-01-27 14:46:29,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:29,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 14:46:29,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 14:46:29,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 14:46:29,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 102 [2024-01-27 14:46:29,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 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 14:46:29,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:29,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 102 [2024-01-27 14:46:29,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:29,437 INFO L124 PetriNetUnfolderBase]: 115/452 cut-off events. [2024-01-27 14:46:29,437 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-01-27 14:46:29,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 452 events. 115/452 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2029 event pairs, 49 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 809. Up to 85 conditions per place. [2024-01-27 14:46:29,439 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 34 selfloop transitions, 2 changer transitions 21/90 dead transitions. [2024-01-27 14:46:29,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 90 transitions, 356 flow [2024-01-27 14:46:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 14:46:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 14:46:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 391 transitions. [2024-01-27 14:46:29,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2024-01-27 14:46:29,440 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 179 flow. Second operand 5 states and 391 transitions. [2024-01-27 14:46:29,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 90 transitions, 356 flow [2024-01-27 14:46:29,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:46:29,442 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 173 flow [2024-01-27 14:46:29,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2024-01-27 14:46:29,442 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -21 predicate places. [2024-01-27 14:46:29,442 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 173 flow [2024-01-27 14:46:29,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 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 14:46:29,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:46:29,443 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, 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 14:46:29,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 14:46:29,443 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-27 14:46:29,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:46:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash -25016321, now seen corresponding path program 2 times [2024-01-27 14:46:29,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:46:29,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849385453] [2024-01-27 14:46:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:46:29,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:46:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:46:29,542 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 14:46:29,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:46:29,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849385453] [2024-01-27 14:46:29,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849385453] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:46:29,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:46:29,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 14:46:29,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147230164] [2024-01-27 14:46:29,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:46:29,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 14:46:29,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:46:29,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 14:46:29,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 14:46:29,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 102 [2024-01-27 14:46:29,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 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 14:46:29,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:46:29,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 102 [2024-01-27 14:46:29,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:46:29,628 INFO L124 PetriNetUnfolderBase]: 61/260 cut-off events. [2024-01-27 14:46:29,628 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-01-27 14:46:29,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 260 events. 61/260 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 853 event pairs, 29 based on Foata normal form. 1/243 useless extension candidates. Maximal degree in co-relation 490. Up to 69 conditions per place. [2024-01-27 14:46:29,629 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2024-01-27 14:46:29,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 262 flow [2024-01-27 14:46:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 14:46:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 14:46:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2024-01-27 14:46:29,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7294117647058823 [2024-01-27 14:46:29,631 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 173 flow. Second operand 5 states and 372 transitions. [2024-01-27 14:46:29,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 262 flow [2024-01-27 14:46:29,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 70 transitions, 252 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 14:46:29,632 INFO L231 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2024-01-27 14:46:29,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2024-01-27 14:46:29,633 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -26 predicate places. [2024-01-27 14:46:29,633 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2024-01-27 14:46:29,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 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 14:46:29,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 61 remaining) [2024-01-27 14:46:29,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 61 remaining) [2024-01-27 14:46:29,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 61 remaining) [2024-01-27 14:46:29,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 61 remaining) [2024-01-27 14:46:29,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 61 remaining) [2024-01-27 14:46:29,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 61 remaining) [2024-01-27 14:46:29,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 61 remaining) [2024-01-27 14:46:29,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 61 remaining) [2024-01-27 14:46:29,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 61 remaining) [2024-01-27 14:46:29,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 61 remaining) [2024-01-27 14:46:29,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 61 remaining) [2024-01-27 14:46:29,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 61 remaining) [2024-01-27 14:46:29,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 61 remaining) [2024-01-27 14:46:29,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 61 remaining) [2024-01-27 14:46:29,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 61 remaining) [2024-01-27 14:46:29,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 61 remaining) [2024-01-27 14:46:29,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 61 remaining) [2024-01-27 14:46:29,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 61 remaining) [2024-01-27 14:46:29,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 61 remaining) [2024-01-27 14:46:29,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 61 remaining) [2024-01-27 14:46:29,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 61 remaining) [2024-01-27 14:46:29,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 61 remaining) [2024-01-27 14:46:29,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 61 remaining) [2024-01-27 14:46:29,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 61 remaining) [2024-01-27 14:46:29,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 61 remaining) [2024-01-27 14:46:29,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 61 remaining) [2024-01-27 14:46:29,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 61 remaining) [2024-01-27 14:46:29,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 61 remaining) [2024-01-27 14:46:29,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 61 remaining) [2024-01-27 14:46:29,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 61 remaining) [2024-01-27 14:46:29,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 61 remaining) [2024-01-27 14:46:29,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 61 remaining) [2024-01-27 14:46:29,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 61 remaining) [2024-01-27 14:46:29,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 61 remaining) [2024-01-27 14:46:29,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (26 of 61 remaining) [2024-01-27 14:46:29,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 61 remaining) [2024-01-27 14:46:29,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 61 remaining) [2024-01-27 14:46:29,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 61 remaining) [2024-01-27 14:46:29,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 61 remaining) [2024-01-27 14:46:29,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 61 remaining) [2024-01-27 14:46:29,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 61 remaining) [2024-01-27 14:46:29,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 61 remaining) [2024-01-27 14:46:29,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 61 remaining) [2024-01-27 14:46:29,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 61 remaining) [2024-01-27 14:46:29,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 61 remaining) [2024-01-27 14:46:29,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 61 remaining) [2024-01-27 14:46:29,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 61 remaining) [2024-01-27 14:46:29,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 61 remaining) [2024-01-27 14:46:29,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 61 remaining) [2024-01-27 14:46:29,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 61 remaining) [2024-01-27 14:46:29,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 61 remaining) [2024-01-27 14:46:29,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 61 remaining) [2024-01-27 14:46:29,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 61 remaining) [2024-01-27 14:46:29,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 61 remaining) [2024-01-27 14:46:29,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 61 remaining) [2024-01-27 14:46:29,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 61 remaining) [2024-01-27 14:46:29,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 61 remaining) [2024-01-27 14:46:29,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 61 remaining) [2024-01-27 14:46:29,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 61 remaining) [2024-01-27 14:46:29,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 61 remaining) [2024-01-27 14:46:29,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 61 remaining) [2024-01-27 14:46:29,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-27 14:46:29,647 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:46:29,651 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 14:46:29,651 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 14:46:29,655 INFO L503 ceAbstractionStarter]: Automizer considered 34 witness invariants [2024-01-27 14:46:29,655 INFO L504 ceAbstractionStarter]: WitnessConsidered=34 [2024-01-27 14:46:29,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 02:46:29 BasicIcfg [2024-01-27 14:46:29,656 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 14:46:29,657 INFO L158 Benchmark]: Toolchain (without parser) took 4547.24ms. Allocated memory was 148.9MB in the beginning and 188.7MB in the end (delta: 39.8MB). Free memory was 115.4MB in the beginning and 124.4MB in the end (delta: -8.9MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2024-01-27 14:46:29,657 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 148.9MB. Free memory is still 108.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:46:29,657 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 148.9MB. Free memory is still 122.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:46:29,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.06ms. Allocated memory is still 148.9MB. Free memory was 115.4MB in the beginning and 90.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-27 14:46:29,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.53ms. Allocated memory is still 148.9MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:46:29,658 INFO L158 Benchmark]: Boogie Preprocessor took 59.78ms. Allocated memory is still 148.9MB. Free memory was 88.2MB in the beginning and 86.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:46:29,658 INFO L158 Benchmark]: RCFGBuilder took 464.65ms. Allocated memory is still 148.9MB. Free memory was 86.1MB in the beginning and 52.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-01-27 14:46:29,658 INFO L158 Benchmark]: TraceAbstraction took 3513.03ms. Allocated memory was 148.9MB in the beginning and 188.7MB in the end (delta: 39.8MB). Free memory was 52.0MB in the beginning and 124.4MB in the end (delta: -72.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:46:29,659 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 148.9MB. Free memory is still 108.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 148.9MB. Free memory is still 122.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 454.06ms. Allocated memory is still 148.9MB. Free memory was 115.4MB in the beginning and 90.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.53ms. Allocated memory is still 148.9MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.78ms. Allocated memory is still 148.9MB. Free memory was 88.2MB in the beginning and 86.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 464.65ms. Allocated memory is still 148.9MB. Free memory was 86.1MB in the beginning and 52.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3513.03ms. Allocated memory was 148.9MB in the beginning and 188.7MB in the end (delta: 39.8MB). Free memory was 52.0MB in the beginning and 124.4MB in the end (delta: -72.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 696]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 697]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 697]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 706]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 707]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 707]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 708]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 708]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 709]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 710]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 710]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 712]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 717]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 717]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 718]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 718]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 719]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 719]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 720]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 720]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 727]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 172 locations, 61 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 934 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 632 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 135 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1569 IncrementalHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 135 mSolverCounterUnsat, 78 mSDtfsCounter, 1569 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=213occurred in iteration=4, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 431 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 416 ConstructedInterpolants, 0 QuantifiedInterpolants, 1002 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 35 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 14:46:29,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE