./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/test-semi1.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d8006e4b 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/weaver/test-semi1.wvr.c ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/test-semi1.wvr.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-d8006e4-m [2024-02-05 10:36:53,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:36:53,651 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:36:53,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:36:53,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:36:53,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:36:53,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:36:53,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:36:53,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:36:53,687 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:36:53,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:36:53,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:36:53,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:36:53,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:36:53,689 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:36:53,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:36:53,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:36:53,690 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:36:53,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:36:53,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:36:53,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:36:53,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:36:53,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:36:53,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:36:53,693 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:36:53,693 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:36:53,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:36:53,693 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:36:53,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:36:53,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:36:53,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:36:53,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:36:53,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:36:53,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:36:53,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:36:53,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:36:53,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:36:53,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:36:53,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:36:53,697 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:36:53,697 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:36:53,697 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:36:53,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:36:53,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:36:53,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:36:53,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:36:53,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:36:53,930 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:36:53,930 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:36:53,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/test-semi1.wvr.yml/witness.yml [2024-02-05 10:36:53,995 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:36:53,995 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:36:53,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c [2024-02-05 10:36:55,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:36:55,226 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:36:55,227 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c [2024-02-05 10:36:55,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631e7df12/713318f77f8949429ceb6b11031ca0b8/FLAG811bf04f5 [2024-02-05 10:36:55,250 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631e7df12/713318f77f8949429ceb6b11031ca0b8 [2024-02-05 10:36:55,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:36:55,251 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:36:55,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:36:55,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:36:55,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:36:55,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:36:53" (1/2) ... [2024-02-05 10:36:55,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288265ee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:55, skipping insertion in model container [2024-02-05 10:36:55,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:36:53" (1/2) ... [2024-02-05 10:36:55,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@73c4d69a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:55, skipping insertion in model container [2024-02-05 10:36:55,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:36:55" (2/2) ... [2024-02-05 10:36:55,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288265ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55, skipping insertion in model container [2024-02-05 10:36:55,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:36:55" (2/2) ... [2024-02-05 10:36:55,262 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:36:55,284 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:36:55,285 INFO L101 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-02-05 10:36:55,285 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] (x <= 2147483646) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:36:55,285 INFO L101 nessWitnessExtractor]: Location invariant before [L43-L43] (-2147483647 <= x) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:36:55,285 INFO L101 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-02-05 10:36:55,285 INFO L101 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-02-05 10:36:55,285 INFO L101 nessWitnessExtractor]: Location invariant before [L61-L61] y == 0 [2024-02-05 10:36:55,286 INFO L101 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-02-05 10:36:55,286 INFO L101 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-02-05 10:36:55,286 INFO L101 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-02-05 10:36:55,286 INFO L101 nessWitnessExtractor]: Location invariant before [L49-L49] (unsigned long )_argptr == 0UL [2024-02-05 10:36:55,286 INFO L101 nessWitnessExtractor]: Location invariant before [L60-L60] (x == 0) && (y == 0) [2024-02-05 10:36:55,304 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:36:55,451 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c[2005,2018] [2024-02-05 10:36:55,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:36:55,461 INFO L204 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 [2024-02-05 10:36:55,506 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c[2005,2018] [2024-02-05 10:36:55,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:36:55,518 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:36:55,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55 WrapperNode [2024-02-05 10:36:55,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:36:55,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:36:55,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:36:55,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:36:55,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,545 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,566 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 80 [2024-02-05 10:36:55,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:36:55,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:36:55,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:36:55,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:36:55,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,581 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,605 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-05 10:36:55,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:36:55,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:36:55,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:36:55,642 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:36:55,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (1/1) ... [2024-02-05 10:36:55,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:36:55,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:36:55,669 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) [2024-02-05 10:36:55,670 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 [2024-02-05 10:36:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:36:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-05 10:36:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-05 10:36:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-05 10:36:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-05 10:36:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:36:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:36:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:36:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:36:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:36:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:36:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:36:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-05 10:36:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-05 10:36:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:36:55,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:36:55,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-05 10:36:55,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-05 10:36:55,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-05 10:36:55,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:36:55,702 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-05 10:36:55,784 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:36:55,787 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:36:55,958 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:36:55,958 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:36:56,089 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:36:56,090 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-05 10:36:56,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:36:56 BoogieIcfgContainer [2024-02-05 10:36:56,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:36:56,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:36:56,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:36:56,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:36:56,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:36:53" (1/4) ... [2024-02-05 10:36:56,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bf774c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:36:56, skipping insertion in model container [2024-02-05 10:36:56,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:36:55" (2/4) ... [2024-02-05 10:36:56,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bf774c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:36:56, skipping insertion in model container [2024-02-05 10:36:56,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:55" (3/4) ... [2024-02-05 10:36:56,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bf774c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:36:56, skipping insertion in model container [2024-02-05 10:36:56,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:36:56" (4/4) ... [2024-02-05 10:36:56,097 INFO L112 eAbstractionObserver]: Analyzing ICFG test-semi1.wvr.c [2024-02-05 10:36:56,124 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:36:56,124 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-02-05 10:36:56,124 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:36:56,198 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-05 10:36:56,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 34 transitions, 82 flow [2024-02-05 10:36:56,277 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2024-02-05 10:36:56,277 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-05 10:36:56,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 0/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-02-05 10:36:56,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 34 transitions, 82 flow [2024-02-05 10:36:56,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 74 flow [2024-02-05 10:36:56,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:36:56,306 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;@12fe9908, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:36:56,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-02-05 10:36:56,308 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:36:56,308 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:36:56,308 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:36:56,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:56,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:36:56,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-02-05 10:36:56,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:56,313 INFO L85 PathProgramCache]: Analyzing trace with hash 9044, now seen corresponding path program 1 times [2024-02-05 10:36:56,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:56,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617603380] [2024-02-05 10:36:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:56,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:56,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:56,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617603380] [2024-02-05 10:36:56,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617603380] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:56,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:56,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:36:56,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523988556] [2024-02-05 10:36:56,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:56,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:36:56,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:56,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:36:56,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:36:56,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 34 [2024-02-05 10:36:56,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:56,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:56,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 34 [2024-02-05 10:36:56,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:56,606 INFO L124 PetriNetUnfolderBase]: 72/169 cut-off events. [2024-02-05 10:36:56,609 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-02-05 10:36:56,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 169 events. 72/169 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 826 event pairs, 72 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 276. Up to 148 conditions per place. [2024-02-05 10:36:56,614 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 18 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-02-05 10:36:56,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 110 flow [2024-02-05 10:36:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:36:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:36:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-02-05 10:36:56,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392156862745098 [2024-02-05 10:36:56,624 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 74 flow. Second operand 3 states and 55 transitions. [2024-02-05 10:36:56,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 110 flow [2024-02-05 10:36:56,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:36:56,630 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 66 flow [2024-02-05 10:36:56,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-02-05 10:36:56,634 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2024-02-05 10:36:56,634 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 66 flow [2024-02-05 10:36:56,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:56,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:56,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-05 10:36:56,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:36:56,636 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-02-05 10:36:56,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:56,637 INFO L85 PathProgramCache]: Analyzing trace with hash 280624, now seen corresponding path program 1 times [2024-02-05 10:36:56,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:56,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975228526] [2024-02-05 10:36:56,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:56,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:56,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:56,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975228526] [2024-02-05 10:36:56,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975228526] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:56,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:56,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:36:56,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973395336] [2024-02-05 10:36:56,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:56,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:36:56,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:56,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:36:56,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:36:56,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-02-05 10:36:56,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:56,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:56,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-02-05 10:36:56,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:56,753 INFO L124 PetriNetUnfolderBase]: 72/168 cut-off events. [2024-02-05 10:36:56,753 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-05 10:36:56,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 168 events. 72/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 840 event pairs, 72 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 317. Up to 146 conditions per place. [2024-02-05 10:36:56,755 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 17 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2024-02-05 10:36:56,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 102 flow [2024-02-05 10:36:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:36:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:36:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-02-05 10:36:56,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2024-02-05 10:36:56,762 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 66 flow. Second operand 3 states and 56 transitions. [2024-02-05 10:36:56,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 102 flow [2024-02-05 10:36:56,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:36:56,764 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 64 flow [2024-02-05 10:36:56,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-02-05 10:36:56,765 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2024-02-05 10:36:56,765 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 64 flow [2024-02-05 10:36:56,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:56,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:56,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-05 10:36:56,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:36:56,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-02-05 10:36:56,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash -229563710, now seen corresponding path program 1 times [2024-02-05 10:36:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:56,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700379055] [2024-02-05 10:36:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:56,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:56,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:56,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700379055] [2024-02-05 10:36:56,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700379055] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:56,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:56,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:56,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311772236] [2024-02-05 10:36:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:56,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:56,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:56,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-02-05 10:36:56,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:56,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:56,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-02-05 10:36:56,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:57,029 INFO L124 PetriNetUnfolderBase]: 72/164 cut-off events. [2024-02-05 10:36:57,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:36:57,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 164 events. 72/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 756 event pairs, 4 based on Foata normal form. 12/137 useless extension candidates. Maximal degree in co-relation 311. Up to 128 conditions per place. [2024-02-05 10:36:57,031 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 24 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-02-05 10:36:57,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 125 flow [2024-02-05 10:36:57,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-02-05 10:36:57,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-02-05 10:36:57,034 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 64 flow. Second operand 4 states and 69 transitions. [2024-02-05 10:36:57,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 125 flow [2024-02-05 10:36:57,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 121 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:36:57,038 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 58 flow [2024-02-05 10:36:57,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-02-05 10:36:57,039 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2024-02-05 10:36:57,040 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 58 flow [2024-02-05 10:36:57,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:57,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:57,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:36:57,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-02-05 10:36:57,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:57,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1473459873, now seen corresponding path program 1 times [2024-02-05 10:36:57,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:57,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484677432] [2024-02-05 10:36:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:57,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:57,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:57,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484677432] [2024-02-05 10:36:57,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484677432] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:57,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:57,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:57,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384956005] [2024-02-05 10:36:57,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:57,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:57,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:57,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-02-05 10:36:57,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:57,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-02-05 10:36:57,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:57,198 INFO L124 PetriNetUnfolderBase]: 72/156 cut-off events. [2024-02-05 10:36:57,198 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-02-05 10:36:57,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 156 events. 72/156 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 662 event pairs, 19 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 241. Up to 101 conditions per place. [2024-02-05 10:36:57,199 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 24 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2024-02-05 10:36:57,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 123 flow [2024-02-05 10:36:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-02-05 10:36:57,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632352941176471 [2024-02-05 10:36:57,201 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 58 flow. Second operand 4 states and 63 transitions. [2024-02-05 10:36:57,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 123 flow [2024-02-05 10:36:57,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:36:57,202 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 57 flow [2024-02-05 10:36:57,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2024-02-05 10:36:57,202 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2024-02-05 10:36:57,202 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 57 flow [2024-02-05 10:36:57,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:57,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:57,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:36:57,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-02-05 10:36:57,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1567634625, now seen corresponding path program 1 times [2024-02-05 10:36:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:57,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839067597] [2024-02-05 10:36:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:57,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:57,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:57,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839067597] [2024-02-05 10:36:57,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839067597] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:57,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:57,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:57,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353325712] [2024-02-05 10:36:57,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:57,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:57,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:57,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:57,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:57,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-02-05 10:36:57,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:57,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-02-05 10:36:57,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:57,320 INFO L124 PetriNetUnfolderBase]: 42/104 cut-off events. [2024-02-05 10:36:57,321 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-05 10:36:57,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 104 events. 42/104 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 356 event pairs, 2 based on Foata normal form. 8/103 useless extension candidates. Maximal degree in co-relation 192. Up to 70 conditions per place. [2024-02-05 10:36:57,324 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2024-02-05 10:36:57,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 114 flow [2024-02-05 10:36:57,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-02-05 10:36:57,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49264705882352944 [2024-02-05 10:36:57,328 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 57 flow. Second operand 4 states and 67 transitions. [2024-02-05 10:36:57,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 114 flow [2024-02-05 10:36:57,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 111 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:36:57,329 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 52 flow [2024-02-05 10:36:57,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2024-02-05 10:36:57,331 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2024-02-05 10:36:57,331 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 52 flow [2024-02-05 10:36:57,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:57,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:57,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-05 10:36:57,332 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-02-05 10:36:57,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:57,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1352032819, now seen corresponding path program 1 times [2024-02-05 10:36:57,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:57,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130726217] [2024-02-05 10:36:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:57,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130726217] [2024-02-05 10:36:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130726217] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:57,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907919933] [2024-02-05 10:36:57,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:57,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:57,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-02-05 10:36:57,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:57,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-02-05 10:36:57,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:57,462 INFO L124 PetriNetUnfolderBase]: 54/129 cut-off events. [2024-02-05 10:36:57,462 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-02-05 10:36:57,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 129 events. 54/129 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 392 event pairs, 9 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 260. Up to 82 conditions per place. [2024-02-05 10:36:57,463 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 25 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2024-02-05 10:36:57,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 151 flow [2024-02-05 10:36:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-02-05 10:36:57,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-02-05 10:36:57,464 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 52 flow. Second operand 4 states and 69 transitions. [2024-02-05 10:36:57,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 151 flow [2024-02-05 10:36:57,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:36:57,466 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 89 flow [2024-02-05 10:36:57,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2024-02-05 10:36:57,468 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2024-02-05 10:36:57,469 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 89 flow [2024-02-05 10:36:57,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:57,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:57,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-05 10:36:57,470 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-02-05 10:36:57,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:57,470 INFO L85 PathProgramCache]: Analyzing trace with hash -973532160, now seen corresponding path program 1 times [2024-02-05 10:36:57,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:57,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550579606] [2024-02-05 10:36:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:57,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:57,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:57,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550579606] [2024-02-05 10:36:57,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550579606] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:57,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:57,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:36:57,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622281541] [2024-02-05 10:36:57,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:57,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:36:57,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:57,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:36:57,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:36:57,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-02-05 10:36:57,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:57,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-02-05 10:36:57,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:57,592 INFO L124 PetriNetUnfolderBase]: 48/117 cut-off events. [2024-02-05 10:36:57,592 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-02-05 10:36:57,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 117 events. 48/117 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 333 event pairs, 1 based on Foata normal form. 6/122 useless extension candidates. Maximal degree in co-relation 281. Up to 38 conditions per place. [2024-02-05 10:36:57,593 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-02-05 10:36:57,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 190 flow [2024-02-05 10:36:57,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:36:57,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:36:57,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-02-05 10:36:57,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-02-05 10:36:57,594 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 89 flow. Second operand 6 states and 90 transitions. [2024-02-05 10:36:57,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 190 flow [2024-02-05 10:36:57,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:36:57,595 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 98 flow [2024-02-05 10:36:57,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=98, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2024-02-05 10:36:57,596 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2024-02-05 10:36:57,596 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 98 flow [2024-02-05 10:36:57,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:57,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:57,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-05 10:36:57,596 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-02-05 10:36:57,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:57,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1417446104, now seen corresponding path program 1 times [2024-02-05 10:36:57,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:57,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680739982] [2024-02-05 10:36:57,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:57,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:57,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:57,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680739982] [2024-02-05 10:36:57,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680739982] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:57,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:57,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:36:57,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866177215] [2024-02-05 10:36:57,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:57,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:57,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:57,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:57,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:57,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-02-05 10:36:57,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:57,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-02-05 10:36:57,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:57,730 INFO L124 PetriNetUnfolderBase]: 32/87 cut-off events. [2024-02-05 10:36:57,730 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-02-05 10:36:57,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 87 events. 32/87 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 247 event pairs, 10 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 214. Up to 32 conditions per place. [2024-02-05 10:36:57,731 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 12 selfloop transitions, 4 changer transitions 15/36 dead transitions. [2024-02-05 10:36:57,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 193 flow [2024-02-05 10:36:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-02-05 10:36:57,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2024-02-05 10:36:57,732 INFO L175 Difference]: Start difference. First operand has 36 places, 23 transitions, 98 flow. Second operand 4 states and 82 transitions. [2024-02-05 10:36:57,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 193 flow [2024-02-05 10:36:57,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 169 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-05 10:36:57,735 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 78 flow [2024-02-05 10:36:57,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2024-02-05 10:36:57,736 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-02-05 10:36:57,736 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 78 flow [2024-02-05 10:36:57,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:57,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:57,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-05 10:36:57,737 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-02-05 10:36:57,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:57,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1204300714, now seen corresponding path program 2 times [2024-02-05 10:36:57,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:57,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448632066] [2024-02-05 10:36:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:57,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:57,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:57,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448632066] [2024-02-05 10:36:57,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448632066] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:57,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:57,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:36:57,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011926141] [2024-02-05 10:36:57,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:57,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:57,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:57,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:57,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:57,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-02-05 10:36:57,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:57,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-02-05 10:36:57,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:57,853 INFO L124 PetriNetUnfolderBase]: 12/40 cut-off events. [2024-02-05 10:36:57,853 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-02-05 10:36:57,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 40 events. 12/40 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 4 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 85. Up to 29 conditions per place. [2024-02-05 10:36:57,854 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2024-02-05 10:36:57,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 20 transitions, 108 flow [2024-02-05 10:36:57,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-02-05 10:36:57,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-02-05 10:36:57,854 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 78 flow. Second operand 4 states and 69 transitions. [2024-02-05 10:36:57,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 20 transitions, 108 flow [2024-02-05 10:36:57,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 92 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:36:57,855 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2024-02-05 10:36:57,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2024-02-05 10:36:57,856 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2024-02-05 10:36:57,856 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2024-02-05 10:36:57,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:57,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 23 remaining) [2024-02-05 10:36:57,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 23 remaining) [2024-02-05 10:36:57,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 23 remaining) [2024-02-05 10:36:57,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 23 remaining) [2024-02-05 10:36:57,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (11 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 23 remaining) [2024-02-05 10:36:57,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 23 remaining) [2024-02-05 10:36:57,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 23 remaining) [2024-02-05 10:36:57,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 23 remaining) [2024-02-05 10:36:57,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 23 remaining) [2024-02-05 10:36:57,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 23 remaining) [2024-02-05 10:36:57,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 23 remaining) [2024-02-05 10:36:57,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 23 remaining) [2024-02-05 10:36:57,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-05 10:36:57,860 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:57,864 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-05 10:36:57,864 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-05 10:36:57,867 INFO L503 ceAbstractionStarter]: Automizer considered 11 witness invariants [2024-02-05 10:36:57,867 INFO L504 ceAbstractionStarter]: WitnessConsidered=11 [2024-02-05 10:36:57,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 10:36:57 BasicIcfg [2024-02-05 10:36:57,867 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-05 10:36:57,868 INFO L158 Benchmark]: Toolchain (without parser) took 2616.42ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 57.7MB in the beginning and 61.8MB in the end (delta: -4.1MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2024-02-05 10:36:57,868 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 119.5MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-05 10:36:57,868 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 119.5MB. Free memory was 77.1MB in the beginning and 76.9MB in the end (delta: 126.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-05 10:36:57,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.88ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 57.5MB in the beginning and 121.0MB in the end (delta: -63.5MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2024-02-05 10:36:57,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.04ms. Allocated memory is still 155.2MB. Free memory was 121.0MB in the beginning and 119.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-05 10:36:57,868 INFO L158 Benchmark]: Boogie Preprocessor took 74.15ms. Allocated memory is still 155.2MB. Free memory was 119.1MB in the beginning and 117.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-05 10:36:57,869 INFO L158 Benchmark]: RCFGBuilder took 448.47ms. Allocated memory is still 155.2MB. Free memory was 117.0MB in the beginning and 89.8MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-02-05 10:36:57,869 INFO L158 Benchmark]: TraceAbstraction took 1775.66ms. Allocated memory is still 155.2MB. Free memory was 89.6MB in the beginning and 61.8MB in the end (delta: 27.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2024-02-05 10:36:57,870 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 119.5MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 119.5MB. Free memory was 77.1MB in the beginning and 76.9MB in the end (delta: 126.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.88ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 57.5MB in the beginning and 121.0MB in the end (delta: -63.5MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.04ms. Allocated memory is still 155.2MB. Free memory was 121.0MB in the beginning and 119.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.15ms. Allocated memory is still 155.2MB. Free memory was 119.1MB in the beginning and 117.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 448.47ms. Allocated memory is still 155.2MB. Free memory was 117.0MB in the beginning and 89.8MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1775.66ms. Allocated memory is still 155.2MB. Free memory was 89.6MB in the beginning and 61.8MB in the end (delta: 27.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 42]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 43]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 45]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 49]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 50]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 51]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 52]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 54]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 60]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 61]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 72]: 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, 56 locations, 23 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: 1.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 183 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 438 IncrementalHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 14 mSDtfsCounter, 438 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=7, InterpolantAutomatonStates: 36, 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, 0.6s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-05 10:36:57,889 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