./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-threaded-sum-2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/popl20-bad-threaded-sum-2.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-threaded-sum-2.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-?-80b1b13-m [2024-01-31 17:02:32,900 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:02:32,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:02:32,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:02:32,964 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:02:32,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:02:32,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:02:32,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:02:32,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:02:32,993 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:02:32,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:02:32,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:02:32,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:02:32,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:02:32,996 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:02:32,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:02:32,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:02:32,996 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:02:32,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:02:32,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:02:32,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:02:32,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:02:32,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:02:32,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:02:32,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:02:32,998 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:02:32,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:02:32,999 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:02:32,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:02:33,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:02:33,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:02:33,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:02:33,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:02:33,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:02:33,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:02:33,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:02:33,002 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:02:33,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:02:33,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:02:33,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:02:33,003 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:02:33,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:02:33,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:02:33,003 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:02:33,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:02:33,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:02:33,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:02:33,235 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:02:33,235 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:02:33,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2024-01-31 17:02:34,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:02:34,526 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:02:34,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2024-01-31 17:02:34,532 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e21dcfb6/b79166b1768448d7b7ed1b2d8c60687a/FLAGaa00751ba [2024-01-31 17:02:34,542 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e21dcfb6/b79166b1768448d7b7ed1b2d8c60687a [2024-01-31 17:02:34,544 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:02:34,545 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:02:34,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-threaded-sum-2.wvr.yml/witness.yml [2024-01-31 17:02:34,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:02:34,632 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:02:34,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:02:34,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:02:34,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:02:34,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:02:34" (1/2) ... [2024-01-31 17:02:34,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126a22ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:02:34, skipping insertion in model container [2024-01-31 17:02:34,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:02:34" (1/2) ... [2024-01-31 17:02:34,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c982438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:02:34, skipping insertion in model container [2024-01-31 17:02:34,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:02:34" (2/2) ... [2024-01-31 17:02:34,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126a22ba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34, skipping insertion in model container [2024-01-31 17:02:34,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:02:34" (2/2) ... [2024-01-31 17:02:34,646 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:02:34,677 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:02:34,679 INFO L98 nessWitnessExtractor]: Location invariant after [L61-L61] (unsigned long )_argptr == 0UL [2024-01-31 17:02:34,679 INFO L98 nessWitnessExtractor]: Location invariant after [L42-L42] (s == 0U) && ((unsigned long )_argptr == 0UL) [2024-01-31 17:02:34,698 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:02:34,819 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/popl20-bad-threaded-sum-2.wvr.c[2502,2515] [2024-01-31 17:02:34,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:02:34,847 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:02:34,857 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 17:02:34,861 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 17:02:34,865 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/popl20-bad-threaded-sum-2.wvr.c[2502,2515] [2024-01-31 17:02:34,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:02:34,877 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:02:34,877 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34 WrapperNode [2024-01-31 17:02:34,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:02:34,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:02:34,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:02:34,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:02:34,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,905 INFO L138 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2024-01-31 17:02:34,906 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:02:34,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:02:34,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:02:34,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:02:34,915 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,943 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]. [2024-01-31 17:02:34,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,952 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:02:34,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:02:34,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:02:34,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:02:34,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (1/1) ... [2024-01-31 17:02:34,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:02:34,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:02:35,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:02:35,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:02:35,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:02:35,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:02:35,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:02:35,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:02:35,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:02:35,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:02:35,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:02:35,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:02:35,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:02:35,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:02:35,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:02:35,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:02:35,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:02:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:02:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:02:35,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:02:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:02:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:02:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:02:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:02:35,073 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:02:35,156 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:02:35,157 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:02:35,335 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:02:35,336 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:02:35,444 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:02:35,449 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-31 17:02:35,451 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:02:35 BoogieIcfgContainer [2024-01-31 17:02:35,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:02:35,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:02:35,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:02:35,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:02:35,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:02:34" (1/4) ... [2024-01-31 17:02:35,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae1fa0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:02:35, skipping insertion in model container [2024-01-31 17:02:35,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:02:34" (2/4) ... [2024-01-31 17:02:35,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae1fa0f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:02:35, skipping insertion in model container [2024-01-31 17:02:35,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:02:34" (3/4) ... [2024-01-31 17:02:35,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae1fa0f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:02:35, skipping insertion in model container [2024-01-31 17:02:35,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:02:35" (4/4) ... [2024-01-31 17:02:35,460 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2024-01-31 17:02:35,494 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:02:35,494 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:02:35,494 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:02:35,529 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 17:02:35,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 66 flow [2024-01-31 17:02:35,593 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2024-01-31 17:02:35,594 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:02:35,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 24 events. 2/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-01-31 17:02:35,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 26 transitions, 66 flow [2024-01-31 17:02:35,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 58 flow [2024-01-31 17:02:35,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:02:35,620 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;@480ca3b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:02:35,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-31 17:02:35,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:02:35,632 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-01-31 17:02:35,632 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:02:35,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:35,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:02:35,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:02:35,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:35,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1773029837, now seen corresponding path program 1 times [2024-01-31 17:02:35,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:35,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318387116] [2024-01-31 17:02:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:35,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:36,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:36,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318387116] [2024-01-31 17:02:36,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318387116] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:02:36,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:02:36,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:02:36,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39035556] [2024-01-31 17:02:36,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:02:36,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:02:36,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:02:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:02:36,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-01-31 17:02:36,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 58 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) [2024-01-31 17:02:36,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:36,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-01-31 17:02:36,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:36,293 INFO L124 PetriNetUnfolderBase]: 69/157 cut-off events. [2024-01-31 17:02:36,293 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-01-31 17:02:36,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 157 events. 69/157 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 645 event pairs, 6 based on Foata normal form. 8/159 useless extension candidates. Maximal degree in co-relation 227. Up to 79 conditions per place. [2024-01-31 17:02:36,298 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 25 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2024-01-31 17:02:36,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 144 flow [2024-01-31 17:02:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:02:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:02:36,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-01-31 17:02:36,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-01-31 17:02:36,309 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 58 flow. Second operand 4 states and 65 transitions. [2024-01-31 17:02:36,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 144 flow [2024-01-31 17:02:36,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 35 transitions, 132 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:02:36,313 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 64 flow [2024-01-31 17:02:36,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2024-01-31 17:02:36,317 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2024-01-31 17:02:36,317 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 64 flow [2024-01-31 17:02:36,318 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) [2024-01-31 17:02:36,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:36,318 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] [2024-01-31 17:02:36,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:02:36,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:02:36,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:36,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1935858214, now seen corresponding path program 1 times [2024-01-31 17:02:36,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:36,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765976854] [2024-01-31 17:02:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:36,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:02:36,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:36,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765976854] [2024-01-31 17:02:36,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765976854] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:02:36,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:02:36,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:02:36,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481505414] [2024-01-31 17:02:36,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:02:36,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:02:36,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:36,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:02:36,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:02:36,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-01-31 17:02:36,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:36,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:36,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-01-31 17:02:36,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:36,692 INFO L124 PetriNetUnfolderBase]: 84/178 cut-off events. [2024-01-31 17:02:36,692 INFO L125 PetriNetUnfolderBase]: For 20/29 co-relation queries the response was YES. [2024-01-31 17:02:36,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 178 events. 84/178 cut-off events. For 20/29 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 599 event pairs, 12 based on Foata normal form. 13/188 useless extension candidates. Maximal degree in co-relation 115. Up to 138 conditions per place. [2024-01-31 17:02:36,694 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 22 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-01-31 17:02:36,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 140 flow [2024-01-31 17:02:36,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:02:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:02:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-01-31 17:02:36,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2024-01-31 17:02:36,699 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 64 flow. Second operand 4 states and 63 transitions. [2024-01-31 17:02:36,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 140 flow [2024-01-31 17:02:36,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:02:36,704 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 92 flow [2024-01-31 17:02:36,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2024-01-31 17:02:36,705 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2024-01-31 17:02:36,705 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 92 flow [2024-01-31 17:02:36,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:36,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:36,706 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] [2024-01-31 17:02:36,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:02:36,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:02:36,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:36,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2099421322, now seen corresponding path program 2 times [2024-01-31 17:02:36,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:36,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658291212] [2024-01-31 17:02:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:36,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:36,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:36,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658291212] [2024-01-31 17:02:36,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658291212] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:02:36,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:02:36,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:02:36,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641156748] [2024-01-31 17:02:36,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:02:36,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:02:36,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:36,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:02:36,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:02:36,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-01-31 17:02:36,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:36,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:36,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-01-31 17:02:36,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:36,900 INFO L124 PetriNetUnfolderBase]: 90/188 cut-off events. [2024-01-31 17:02:36,900 INFO L125 PetriNetUnfolderBase]: For 88/101 co-relation queries the response was YES. [2024-01-31 17:02:36,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 188 events. 90/188 cut-off events. For 88/101 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 677 event pairs, 17 based on Foata normal form. 19/203 useless extension candidates. Maximal degree in co-relation 162. Up to 83 conditions per place. [2024-01-31 17:02:36,902 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 30 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-01-31 17:02:36,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 211 flow [2024-01-31 17:02:36,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:02:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:02:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-01-31 17:02:36,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-01-31 17:02:36,904 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 92 flow. Second operand 5 states and 80 transitions. [2024-01-31 17:02:36,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 211 flow [2024-01-31 17:02:36,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 211 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:02:36,906 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 131 flow [2024-01-31 17:02:36,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2024-01-31 17:02:36,906 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 10 predicate places. [2024-01-31 17:02:36,906 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 131 flow [2024-01-31 17:02:36,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:36,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:36,907 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] [2024-01-31 17:02:36,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:02:36,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:02:36,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:36,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1239185092, now seen corresponding path program 3 times [2024-01-31 17:02:36,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:36,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020481419] [2024-01-31 17:02:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:36,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:37,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:37,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020481419] [2024-01-31 17:02:37,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020481419] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:02:37,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920818730] [2024-01-31 17:02:37,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:02:37,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:02:37,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:02:37,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:02:37,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:02:37,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-31 17:02:37,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:02:37,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:02:37,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:02:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:37,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:02:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:38,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920818730] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:02:38,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:02:38,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-01-31 17:02:38,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062264523] [2024-01-31 17:02:38,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:02:38,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-31 17:02:38,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:38,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-31 17:02:38,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-01-31 17:02:38,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 26 [2024-01-31 17:02:38,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 131 flow. Second operand has 17 states, 17 states have (on average 10.470588235294118) internal successors, (178), 17 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:38,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:38,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 26 [2024-01-31 17:02:38,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:39,197 INFO L124 PetriNetUnfolderBase]: 519/1012 cut-off events. [2024-01-31 17:02:39,198 INFO L125 PetriNetUnfolderBase]: For 708/733 co-relation queries the response was YES. [2024-01-31 17:02:39,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1012 events. 519/1012 cut-off events. For 708/733 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5424 event pairs, 8 based on Foata normal form. 20/1027 useless extension candidates. Maximal degree in co-relation 1040. Up to 211 conditions per place. [2024-01-31 17:02:39,205 INFO L140 encePairwiseOnDemand]: 17/26 looper letters, 104 selfloop transitions, 62 changer transitions 28/200 dead transitions. [2024-01-31 17:02:39,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 200 transitions, 1139 flow [2024-01-31 17:02:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-01-31 17:02:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-01-31 17:02:39,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 428 transitions. [2024-01-31 17:02:39,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487179487179488 [2024-01-31 17:02:39,211 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 131 flow. Second operand 30 states and 428 transitions. [2024-01-31 17:02:39,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 200 transitions, 1139 flow [2024-01-31 17:02:39,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 200 transitions, 1124 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 17:02:39,220 INFO L231 Difference]: Finished difference. Result has 84 places, 93 transitions, 661 flow [2024-01-31 17:02:39,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=661, PETRI_PLACES=84, PETRI_TRANSITIONS=93} [2024-01-31 17:02:39,221 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 56 predicate places. [2024-01-31 17:02:39,221 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 93 transitions, 661 flow [2024-01-31 17:02:39,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.470588235294118) internal successors, (178), 17 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:39,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:39,222 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:02:39,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 17:02:39,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:02:39,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:02:39,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1427579381, now seen corresponding path program 4 times [2024-01-31 17:02:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:39,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810808985] [2024-01-31 17:02:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:39,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:39,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:39,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810808985] [2024-01-31 17:02:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810808985] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:02:39,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:02:39,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:02:39,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124088743] [2024-01-31 17:02:39,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:02:39,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:02:39,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:39,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:02:39,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:02:39,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:02:39,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 93 transitions, 661 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:39,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:39,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:02:39,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:39,825 INFO L124 PetriNetUnfolderBase]: 787/1381 cut-off events. [2024-01-31 17:02:39,825 INFO L125 PetriNetUnfolderBase]: For 6080/6208 co-relation queries the response was YES. [2024-01-31 17:02:39,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5174 conditions, 1381 events. 787/1381 cut-off events. For 6080/6208 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6734 event pairs, 4 based on Foata normal form. 24/1404 useless extension candidates. Maximal degree in co-relation 5129. Up to 367 conditions per place. [2024-01-31 17:02:39,836 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 148 selfloop transitions, 64 changer transitions 0/221 dead transitions. [2024-01-31 17:02:39,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 221 transitions, 1964 flow [2024-01-31 17:02:39,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:02:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:02:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-01-31 17:02:39,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-01-31 17:02:39,838 INFO L175 Difference]: Start difference. First operand has 84 places, 93 transitions, 661 flow. Second operand 9 states and 114 transitions. [2024-01-31 17:02:39,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 221 transitions, 1964 flow [2024-01-31 17:02:39,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 221 transitions, 1737 flow, removed 102 selfloop flow, removed 8 redundant places. [2024-01-31 17:02:39,853 INFO L231 Difference]: Finished difference. Result has 86 places, 134 transitions, 1115 flow [2024-01-31 17:02:39,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1115, PETRI_PLACES=86, PETRI_TRANSITIONS=134} [2024-01-31 17:02:39,854 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 58 predicate places. [2024-01-31 17:02:39,854 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 134 transitions, 1115 flow [2024-01-31 17:02:39,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:39,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:39,855 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:02:39,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:02:39,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:02:39,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:39,855 INFO L85 PathProgramCache]: Analyzing trace with hash -392968936, now seen corresponding path program 1 times [2024-01-31 17:02:39,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:39,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011330852] [2024-01-31 17:02:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:39,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:40,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:40,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011330852] [2024-01-31 17:02:40,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011330852] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:02:40,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746666826] [2024-01-31 17:02:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:40,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:02:40,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:02:40,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:02:40,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:02:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:40,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-31 17:02:40,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:02:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:41,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:02:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:43,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746666826] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:02:43,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:02:43,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-01-31 17:02:43,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555635287] [2024-01-31 17:02:43,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:02:43,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-01-31 17:02:43,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:43,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-01-31 17:02:43,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2024-01-31 17:02:43,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 26 [2024-01-31 17:02:43,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 134 transitions, 1115 flow. Second operand has 24 states, 24 states have (on average 10.083333333333334) internal successors, (242), 24 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:43,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:43,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 26 [2024-01-31 17:02:43,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:49,134 INFO L124 PetriNetUnfolderBase]: 1650/3215 cut-off events. [2024-01-31 17:02:49,135 INFO L125 PetriNetUnfolderBase]: For 15005/15235 co-relation queries the response was YES. [2024-01-31 17:02:49,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13476 conditions, 3215 events. 1650/3215 cut-off events. For 15005/15235 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21489 event pairs, 26 based on Foata normal form. 155/3354 useless extension candidates. Maximal degree in co-relation 11566. Up to 724 conditions per place. [2024-01-31 17:02:49,154 INFO L140 encePairwiseOnDemand]: 17/26 looper letters, 213 selfloop transitions, 179 changer transitions 89/491 dead transitions. [2024-01-31 17:02:49,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 491 transitions, 4654 flow [2024-01-31 17:02:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-01-31 17:02:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-01-31 17:02:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 627 transitions. [2024-01-31 17:02:49,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358974358974359 [2024-01-31 17:02:49,157 INFO L175 Difference]: Start difference. First operand has 86 places, 134 transitions, 1115 flow. Second operand 45 states and 627 transitions. [2024-01-31 17:02:49,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 491 transitions, 4654 flow [2024-01-31 17:02:49,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 491 transitions, 4628 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-01-31 17:02:49,195 INFO L231 Difference]: Finished difference. Result has 150 places, 283 transitions, 3204 flow [2024-01-31 17:02:49,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3204, PETRI_PLACES=150, PETRI_TRANSITIONS=283} [2024-01-31 17:02:49,197 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-01-31 17:02:49,197 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 283 transitions, 3204 flow [2024-01-31 17:02:49,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.083333333333334) internal successors, (242), 24 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:49,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:49,198 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:02:49,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 17:02:49,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-01-31 17:02:49,409 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:02:49,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2033025868, now seen corresponding path program 2 times [2024-01-31 17:02:49,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:49,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79594775] [2024-01-31 17:02:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:49,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:50,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79594775] [2024-01-31 17:02:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79594775] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:02:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809426922] [2024-01-31 17:02:50,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:02:50,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:02:50,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:02:50,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:02:50,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 17:02:50,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:02:50,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:02:50,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-31 17:02:50,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:02:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:51,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:02:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:53,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809426922] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:02:53,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:02:53,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2024-01-31 17:02:53,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096492624] [2024-01-31 17:02:53,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:02:53,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-01-31 17:02:53,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-01-31 17:02:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2024-01-31 17:02:53,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-01-31 17:02:53,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 283 transitions, 3204 flow. Second operand has 31 states, 31 states have (on average 7.225806451612903) internal successors, (224), 31 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:53,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:53,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-01-31 17:02:53,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:03:07,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:03:57,458 WARN L293 SmtUtils]: Spent 40.14s on a formula simplification. DAG size of input: 111 DAG size of output: 38 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:04:03,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:07,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:13,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:19,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:23,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:27,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:31,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:38,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:42,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:47,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:51,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:55,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:59,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:03,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:09,343 INFO L124 PetriNetUnfolderBase]: 3831/6552 cut-off events. [2024-01-31 17:05:09,343 INFO L125 PetriNetUnfolderBase]: For 40058/40058 co-relation queries the response was YES. [2024-01-31 17:05:09,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32808 conditions, 6552 events. 3831/6552 cut-off events. For 40058/40058 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 40966 event pairs, 44 based on Foata normal form. 22/6573 useless extension candidates. Maximal degree in co-relation 32688. Up to 1851 conditions per place. [2024-01-31 17:05:09,427 INFO L140 encePairwiseOnDemand]: 13/26 looper letters, 458 selfloop transitions, 401 changer transitions 109/971 dead transitions. [2024-01-31 17:05:09,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 971 transitions, 11049 flow [2024-01-31 17:05:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-01-31 17:05:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2024-01-31 17:05:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 1005 transitions. [2024-01-31 17:05:09,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026442307692308 [2024-01-31 17:05:09,432 INFO L175 Difference]: Start difference. First operand has 150 places, 283 transitions, 3204 flow. Second operand 96 states and 1005 transitions. [2024-01-31 17:05:09,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 971 transitions, 11049 flow [2024-01-31 17:05:09,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 971 transitions, 10562 flow, removed 217 selfloop flow, removed 16 redundant places. [2024-01-31 17:05:09,680 INFO L231 Difference]: Finished difference. Result has 276 places, 584 transitions, 7968 flow [2024-01-31 17:05:09,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3030, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=7968, PETRI_PLACES=276, PETRI_TRANSITIONS=584} [2024-01-31 17:05:09,681 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 248 predicate places. [2024-01-31 17:05:09,681 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 584 transitions, 7968 flow [2024-01-31 17:05:09,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.225806451612903) internal successors, (224), 31 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:09,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:09,681 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:09,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:05:09,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:05:09,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:05:09,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash -10481154, now seen corresponding path program 3 times [2024-01-31 17:05:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:09,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62921215] [2024-01-31 17:05:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:05:11,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:11,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62921215] [2024-01-31 17:05:11,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62921215] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:05:11,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120389554] [2024-01-31 17:05:11,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:05:11,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:05:11,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:05:11,005 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:05:11,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 17:05:11,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 17:05:11,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:05:11,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 23 conjunts are in the unsatisfiable core [2024-01-31 17:05:11,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:05:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:05:17,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:05:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:05:20,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120389554] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:05:20,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:05:20,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2024-01-31 17:05:20,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527045804] [2024-01-31 17:05:20,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:05:20,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-01-31 17:05:20,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:20,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-01-31 17:05:20,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=701, Unknown=1, NotChecked=0, Total=870 [2024-01-31 17:05:20,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:05:20,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 584 transitions, 7968 flow. Second operand has 30 states, 30 states have (on average 8.066666666666666) internal successors, (242), 30 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:20,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:20,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:05:20,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:41,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:45,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:49,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:53,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:06:12,075 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 83 DAG size of output: 43 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:06:16,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 17:06:20,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 17:06:24,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:06:28,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:06:50,168 WARN L293 SmtUtils]: Spent 12.06s on a formula simplification. DAG size of input: 82 DAG size of output: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:06:55,947 INFO L124 PetriNetUnfolderBase]: 4572/8172 cut-off events. [2024-01-31 17:06:55,947 INFO L125 PetriNetUnfolderBase]: For 117501/118905 co-relation queries the response was YES. [2024-01-31 17:06:55,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56780 conditions, 8172 events. 4572/8172 cut-off events. For 117501/118905 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 58142 event pairs, 95 based on Foata normal form. 65/8233 useless extension candidates. Maximal degree in co-relation 56595. Up to 3003 conditions per place. [2024-01-31 17:06:56,066 INFO L140 encePairwiseOnDemand]: 16/26 looper letters, 570 selfloop transitions, 416 changer transitions 83/1084 dead transitions. [2024-01-31 17:06:56,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 1084 transitions, 16267 flow [2024-01-31 17:06:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-01-31 17:06:56,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-01-31 17:06:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 679 transitions. [2024-01-31 17:06:56,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581646423751687 [2024-01-31 17:06:56,084 INFO L175 Difference]: Start difference. First operand has 276 places, 584 transitions, 7968 flow. Second operand 57 states and 679 transitions. [2024-01-31 17:06:56,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 1084 transitions, 16267 flow [2024-01-31 17:06:56,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1084 transitions, 15542 flow, removed 285 selfloop flow, removed 20 redundant places. [2024-01-31 17:06:56,790 INFO L231 Difference]: Finished difference. Result has 332 places, 806 transitions, 12105 flow [2024-01-31 17:06:56,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=7435, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=12105, PETRI_PLACES=332, PETRI_TRANSITIONS=806} [2024-01-31 17:06:56,791 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 304 predicate places. [2024-01-31 17:06:56,792 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 806 transitions, 12105 flow [2024-01-31 17:06:56,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.066666666666666) internal successors, (242), 30 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:06:56,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:06:56,792 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:06:56,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 17:06:57,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:06:57,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:06:57,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:06:57,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1750318930, now seen corresponding path program 4 times [2024-01-31 17:06:57,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:06:57,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215618851] [2024-01-31 17:06:57,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:06:57,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:06:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:06:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:06:59,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:06:59,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215618851] [2024-01-31 17:06:59,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215618851] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:06:59,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2157603] [2024-01-31 17:06:59,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:06:59,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:06:59,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:06:59,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:06:59,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 17:06:59,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:06:59,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:06:59,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-31 17:06:59,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:07:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:07:08,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:07:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:07:09,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2157603] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:07:09,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:07:09,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-01-31 17:07:09,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823783152] [2024-01-31 17:07:09,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:07:09,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-01-31 17:07:09,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:07:09,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-01-31 17:07:09,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=475, Unknown=2, NotChecked=0, Total=600 [2024-01-31 17:07:13,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:07:17,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:07:17,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-01-31 17:07:17,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 806 transitions, 12105 flow. Second operand has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:17,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:07:17,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-01-31 17:07:17,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:07:26,303 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 62 DAG size of output: 45 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:07:34,516 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 57 DAG size of output: 40 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:07:39,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:07:52,071 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 53 DAG size of output: 46 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:08:00,394 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 62 DAG size of output: 55 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:08:05,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:08:09,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:08:13,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:08:22,585 INFO L124 PetriNetUnfolderBase]: 6602/11141 cut-off events. [2024-01-31 17:08:22,585 INFO L125 PetriNetUnfolderBase]: For 177622/177622 co-relation queries the response was YES. [2024-01-31 17:08:22,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84510 conditions, 11141 events. 6602/11141 cut-off events. For 177622/177622 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 76884 event pairs, 110 based on Foata normal form. 9/11149 useless extension candidates. Maximal degree in co-relation 84325. Up to 4925 conditions per place. [2024-01-31 17:08:22,754 INFO L140 encePairwiseOnDemand]: 14/26 looper letters, 681 selfloop transitions, 497 changer transitions 73/1254 dead transitions. [2024-01-31 17:08:22,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1254 transitions, 20676 flow [2024-01-31 17:08:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-01-31 17:08:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-01-31 17:08:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 556 transitions. [2024-01-31 17:08:22,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193061840120664 [2024-01-31 17:08:22,764 INFO L175 Difference]: Start difference. First operand has 332 places, 806 transitions, 12105 flow. Second operand 51 states and 556 transitions. [2024-01-31 17:08:22,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1254 transitions, 20676 flow [2024-01-31 17:08:24,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 1254 transitions, 20145 flow, removed 226 selfloop flow, removed 16 redundant places. [2024-01-31 17:08:24,403 INFO L231 Difference]: Finished difference. Result has 382 places, 1003 transitions, 16703 flow [2024-01-31 17:08:24,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=11735, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=16703, PETRI_PLACES=382, PETRI_TRANSITIONS=1003} [2024-01-31 17:08:24,405 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 354 predicate places. [2024-01-31 17:08:24,405 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 1003 transitions, 16703 flow [2024-01-31 17:08:24,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:24,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:08:24,408 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:08:24,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-01-31 17:08:24,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:24,618 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:08:24,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:08:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash 50408666, now seen corresponding path program 5 times [2024-01-31 17:08:24,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:08:24,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049784758] [2024-01-31 17:08:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:08:24,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:08:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:08:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:08:25,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:08:25,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049784758] [2024-01-31 17:08:25,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049784758] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:08:25,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810219344] [2024-01-31 17:08:25,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:08:25,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:25,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:08:25,284 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:08:25,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 17:08:25,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-01-31 17:08:25,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:08:25,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 29 conjunts are in the unsatisfiable core [2024-01-31 17:08:25,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:08:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:08:26,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:08:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:08:27,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810219344] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:08:27,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:08:27,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 35 [2024-01-31 17:08:27,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675797641] [2024-01-31 17:08:27,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:08:27,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-01-31 17:08:27,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:08:27,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-01-31 17:08:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2024-01-31 17:08:27,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-01-31 17:08:27,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1003 transitions, 16703 flow. Second operand has 36 states, 36 states have (on average 6.888888888888889) internal successors, (248), 36 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:27,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:08:27,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-01-31 17:08:27,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:08:51,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:09:04,463 INFO L124 PetriNetUnfolderBase]: 10034/17132 cut-off events. [2024-01-31 17:09:04,463 INFO L125 PetriNetUnfolderBase]: For 346943/346943 co-relation queries the response was YES. [2024-01-31 17:09:04,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142890 conditions, 17132 events. 10034/17132 cut-off events. For 346943/346943 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 127642 event pairs, 60 based on Foata normal form. 22/17153 useless extension candidates. Maximal degree in co-relation 142636. Up to 3466 conditions per place. [2024-01-31 17:09:04,696 INFO L140 encePairwiseOnDemand]: 13/26 looper letters, 1017 selfloop transitions, 1520 changer transitions 162/2702 dead transitions. [2024-01-31 17:09:04,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 2702 transitions, 49983 flow [2024-01-31 17:09:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-01-31 17:09:04,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2024-01-31 17:09:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 1298 transitions. [2024-01-31 17:09:04,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38402366863905324 [2024-01-31 17:09:04,701 INFO L175 Difference]: Start difference. First operand has 382 places, 1003 transitions, 16703 flow. Second operand 130 states and 1298 transitions. [2024-01-31 17:09:04,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 2702 transitions, 49983 flow [2024-01-31 17:09:09,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 2702 transitions, 49192 flow, removed 341 selfloop flow, removed 15 redundant places. [2024-01-31 17:09:09,256 INFO L231 Difference]: Finished difference. Result has 559 places, 2026 transitions, 40447 flow [2024-01-31 17:09:09,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=16291, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1003, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=605, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=130, PETRI_FLOW=40447, PETRI_PLACES=559, PETRI_TRANSITIONS=2026} [2024-01-31 17:09:09,258 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 531 predicate places. [2024-01-31 17:09:09,258 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 2026 transitions, 40447 flow [2024-01-31 17:09:09,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.888888888888889) internal successors, (248), 36 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:09:09,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:09:09,259 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:09:09,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-31 17:09:09,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:09:09,467 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:09:09,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:09:09,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2089871537, now seen corresponding path program 6 times [2024-01-31 17:09:09,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:09:09,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96850501] [2024-01-31 17:09:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:09:09,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:09:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:09:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:09:28,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:09:28,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96850501] [2024-01-31 17:09:28,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96850501] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:09:28,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923130720] [2024-01-31 17:09:28,282 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:09:28,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:09:28,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:09:28,283 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:09:28,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-31 17:09:28,405 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-01-31 17:09:28,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:09:28,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2024-01-31 17:09:28,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:09:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:09:38,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:09:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:09:40,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923130720] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:09:40,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:09:40,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 28 [2024-01-31 17:09:40,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646405112] [2024-01-31 17:09:40,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:09:40,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-01-31 17:09:40,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:09:40,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-01-31 17:09:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=661, Unknown=2, NotChecked=0, Total=812 [2024-01-31 17:09:41,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-01-31 17:09:41,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 2026 transitions, 40447 flow. Second operand has 29 states, 29 states have (on average 7.344827586206897) internal successors, (213), 29 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:09:41,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:09:41,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-01-31 17:09:41,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:09:49,877 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 101 DAG size of output: 62 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:09:58,582 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 82 DAG size of output: 45 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:10:06,905 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 114 DAG size of output: 47 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:10:46,607 INFO L124 PetriNetUnfolderBase]: 11653/19857 cut-off events. [2024-01-31 17:10:46,607 INFO L125 PetriNetUnfolderBase]: For 635662/635662 co-relation queries the response was YES. [2024-01-31 17:10:46,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197848 conditions, 19857 events. 11653/19857 cut-off events. For 635662/635662 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 150815 event pairs, 90 based on Foata normal form. 16/19872 useless extension candidates. Maximal degree in co-relation 197505. Up to 9242 conditions per place. [2024-01-31 17:10:46,931 INFO L140 encePairwiseOnDemand]: 12/26 looper letters, 1593 selfloop transitions, 1301 changer transitions 126/3023 dead transitions. [2024-01-31 17:10:46,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 3023 transitions, 65420 flow [2024-01-31 17:10:46,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-01-31 17:10:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2024-01-31 17:10:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 1093 transitions. [2024-01-31 17:10:46,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40814040328603435 [2024-01-31 17:10:46,934 INFO L175 Difference]: Start difference. First operand has 559 places, 2026 transitions, 40447 flow. Second operand 103 states and 1093 transitions. [2024-01-31 17:10:46,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 3023 transitions, 65420 flow [2024-01-31 17:11:00,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 3023 transitions, 60577 flow, removed 2340 selfloop flow, removed 43 redundant places. [2024-01-31 17:11:00,328 INFO L231 Difference]: Finished difference. Result has 658 places, 2458 transitions, 52161 flow [2024-01-31 17:11:00,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=38124, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2026, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=911, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=995, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=52161, PETRI_PLACES=658, PETRI_TRANSITIONS=2458} [2024-01-31 17:11:00,330 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 630 predicate places. [2024-01-31 17:11:00,330 INFO L495 AbstractCegarLoop]: Abstraction has has 658 places, 2458 transitions, 52161 flow [2024-01-31 17:11:00,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.344827586206897) internal successors, (213), 29 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:11:00,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:11:00,330 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:11:00,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-01-31 17:11:00,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:11:00,541 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:11:00,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:11:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash -537117913, now seen corresponding path program 7 times [2024-01-31 17:11:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:11:00,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224921027] [2024-01-31 17:11:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:11:00,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:11:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:11:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:11:01,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:11:01,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224921027] [2024-01-31 17:11:01,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224921027] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:11:01,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196597669] [2024-01-31 17:11:01,296 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 17:11:01,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:11:01,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:11:01,297 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:11:01,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-31 17:11:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:11:01,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 24 conjunts are in the unsatisfiable core [2024-01-31 17:11:01,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:11:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:11:02,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:11:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:11:03,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196597669] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:11:03,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:11:03,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-01-31 17:11:03,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262096086] [2024-01-31 17:11:03,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:11:03,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-01-31 17:11:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:11:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-01-31 17:11:03,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2024-01-31 17:11:03,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-01-31 17:11:03,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 2458 transitions, 52161 flow. Second operand has 29 states, 29 states have (on average 7.275862068965517) internal successors, (211), 29 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:11:03,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:11:03,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-01-31 17:11:03,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:11:46,688 INFO L124 PetriNetUnfolderBase]: 15121/25701 cut-off events. [2024-01-31 17:11:46,688 INFO L125 PetriNetUnfolderBase]: For 1059306/1059306 co-relation queries the response was YES. [2024-01-31 17:11:47,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273850 conditions, 25701 events. 15121/25701 cut-off events. For 1059306/1059306 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 199560 event pairs, 184 based on Foata normal form. 12/25712 useless extension candidates. Maximal degree in co-relation 273489. Up to 5052 conditions per place. [2024-01-31 17:11:47,409 INFO L140 encePairwiseOnDemand]: 14/26 looper letters, 1533 selfloop transitions, 2182 changer transitions 113/3831 dead transitions. [2024-01-31 17:11:47,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 3831 transitions, 89238 flow [2024-01-31 17:11:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-01-31 17:11:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2024-01-31 17:11:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 931 transitions. [2024-01-31 17:11:47,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420702754036087 [2024-01-31 17:11:47,414 INFO L175 Difference]: Start difference. First operand has 658 places, 2458 transitions, 52161 flow. Second operand 81 states and 931 transitions. [2024-01-31 17:11:47,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 720 places, 3831 transitions, 89238 flow [2024-01-31 17:12:06,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 3831 transitions, 86880 flow, removed 1158 selfloop flow, removed 21 redundant places. [2024-01-31 17:12:06,844 INFO L231 Difference]: Finished difference. Result has 728 places, 3143 transitions, 74468 flow [2024-01-31 17:12:06,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=50751, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1564, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=752, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=74468, PETRI_PLACES=728, PETRI_TRANSITIONS=3143} [2024-01-31 17:12:06,848 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 700 predicate places. [2024-01-31 17:12:06,849 INFO L495 AbstractCegarLoop]: Abstraction has has 728 places, 3143 transitions, 74468 flow [2024-01-31 17:12:06,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.275862068965517) internal successors, (211), 29 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:12:06,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:12:06,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:12:06,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-01-31 17:12:07,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-01-31 17:12:07,061 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:12:07,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:12:07,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2093588301, now seen corresponding path program 8 times [2024-01-31 17:12:07,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:12:07,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516099363] [2024-01-31 17:12:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:12:07,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:12:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:12:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:12:08,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:12:08,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516099363] [2024-01-31 17:12:08,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516099363] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:12:08,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532930875] [2024-01-31 17:12:08,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:12:08,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:12:08,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:12:08,335 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:12:08,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-31 17:12:08,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:12:08,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:12:08,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 24 conjunts are in the unsatisfiable core [2024-01-31 17:12:08,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:12:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:12:09,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:12:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:12:10,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532930875] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:12:10,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:12:10,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 32 [2024-01-31 17:12:10,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260713086] [2024-01-31 17:12:10,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:12:10,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-01-31 17:12:10,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:12:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-01-31 17:12:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2024-01-31 17:12:10,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-01-31 17:12:10,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 3143 transitions, 74468 flow. Second operand has 33 states, 33 states have (on average 7.212121212121212) internal successors, (238), 33 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:12:10,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:12:10,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-01-31 17:12:10,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:13:07,431 INFO L124 PetriNetUnfolderBase]: 18119/30909 cut-off events. [2024-01-31 17:13:07,431 INFO L125 PetriNetUnfolderBase]: For 1316339/1316339 co-relation queries the response was YES. [2024-01-31 17:13:08,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344435 conditions, 30909 events. 18119/30909 cut-off events. For 1316339/1316339 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 247950 event pairs, 112 based on Foata normal form. 25/30933 useless extension candidates. Maximal degree in co-relation 343949. Up to 12679 conditions per place. [2024-01-31 17:13:08,989 INFO L140 encePairwiseOnDemand]: 13/26 looper letters, 2069 selfloop transitions, 2302 changer transitions 239/4613 dead transitions. [2024-01-31 17:13:08,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 847 places, 4613 transitions, 114431 flow [2024-01-31 17:13:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-01-31 17:13:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2024-01-31 17:13:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 1389 transitions. [2024-01-31 17:13:09,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3957264957264957 [2024-01-31 17:13:09,007 INFO L175 Difference]: Start difference. First operand has 728 places, 3143 transitions, 74468 flow. Second operand 135 states and 1389 transitions. [2024-01-31 17:13:09,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 847 places, 4613 transitions, 114431 flow [2024-01-31 17:13:38,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 830 places, 4613 transitions, 110378 flow, removed 1989 selfloop flow, removed 17 redundant places. [2024-01-31 17:13:39,054 INFO L231 Difference]: Finished difference. Result has 905 places, 3772 transitions, 96548 flow [2024-01-31 17:13:39,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=72087, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1721, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=96548, PETRI_PLACES=905, PETRI_TRANSITIONS=3772} [2024-01-31 17:13:39,057 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 877 predicate places. [2024-01-31 17:13:39,057 INFO L495 AbstractCegarLoop]: Abstraction has has 905 places, 3772 transitions, 96548 flow [2024-01-31 17:13:39,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.212121212121212) internal successors, (238), 33 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:13:39,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:13:39,058 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:13:39,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-01-31 17:13:39,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-01-31 17:13:39,271 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:13:39,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:13:39,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1044134129, now seen corresponding path program 9 times [2024-01-31 17:13:39,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:13:39,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348777549] [2024-01-31 17:13:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:13:39,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:13:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:13:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:13:40,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:13:40,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348777549] [2024-01-31 17:13:40,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348777549] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:13:40,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286598269] [2024-01-31 17:13:40,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:13:40,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:13:40,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:13:40,738 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:13:40,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-01-31 17:13:40,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-01-31 17:13:40,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:13:40,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 30 conjunts are in the unsatisfiable core [2024-01-31 17:13:40,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:13:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:13:42,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:14:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:14:37,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286598269] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:14:37,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:14:37,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 39 [2024-01-31 17:14:37,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002314516] [2024-01-31 17:14:37,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:14:37,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-01-31 17:14:37,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:14:37,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-01-31 17:14:37,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1315, Unknown=10, NotChecked=0, Total=1560 [2024-01-31 17:14:37,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-01-31 17:14:37,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 905 places, 3772 transitions, 96548 flow. Second operand has 40 states, 40 states have (on average 7.0) internal successors, (280), 40 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:14:37,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:14:37,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-01-31 17:14:37,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:03,755 WARN L293 SmtUtils]: Spent 13.06s on a formula simplification. DAG size of input: 136 DAG size of output: 89 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:15:16,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:15:17,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:15:18,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:15:23,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:15:42,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:16:05,226 WARN L293 SmtUtils]: Spent 15.69s on a formula simplification. DAG size of input: 114 DAG size of output: 89 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:16:07,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:16:18,541 WARN L293 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 120 DAG size of output: 97 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:16:29,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:16:33,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:16:35,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 17:16:41,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15