./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.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-prod-cons-eq.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-prod-cons-eq.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-prod-cons-eq.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 17:15:13,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:15:13,966 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:15:13,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:15:13,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:15:13,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:15:13,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:15:13,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:15:14,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:15:14,003 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:15:14,004 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:15:14,004 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:15:14,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:15:14,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:15:14,006 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:15:14,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:15:14,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:15:14,007 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:15:14,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:15:14,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:15:14,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:15:14,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:15:14,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:15:14,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:15:14,021 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:15:14,021 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:15:14,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:15:14,021 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:15:14,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:15:14,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:15:14,021 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:15:14,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:15:14,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:15:14,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:15:14,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:15:14,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:15:14,022 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:15:14,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:15:14,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:15:14,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:15:14,023 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:15:14,023 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:15:14,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:15:14,024 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:15:14,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:15:14,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:15:14,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:15:14,247 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:15:14,248 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:15:14,249 INFO L431 ainManager$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-prod-cons-eq.wvr.yml/witness.yml [2024-01-31 17:15:14,421 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:15:14,421 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:15:14,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2024-01-31 17:15:15,496 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:15:15,653 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:15:15,654 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2024-01-31 17:15:15,660 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc1e3d81/363627b9e75e4d4bbc4cbadbda23a41b/FLAG698d4737d [2024-01-31 17:15:15,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc1e3d81/363627b9e75e4d4bbc4cbadbda23a41b [2024-01-31 17:15:15,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:15:15,671 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:15:15,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:15:15,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:15:15,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:15:15,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:15:14" (1/2) ... [2024-01-31 17:15:15,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa3bc92 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:15:15, skipping insertion in model container [2024-01-31 17:15:15,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:15:14" (1/2) ... [2024-01-31 17:15:15,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@346ddf7d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:15:15, skipping insertion in model container [2024-01-31 17:15:15,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:15:15" (2/2) ... [2024-01-31 17:15:15,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa3bc92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:15, skipping insertion in model container [2024-01-31 17:15:15,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:15:15" (2/2) ... [2024-01-31 17:15:15,681 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:15:15,806 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:15:15,807 INFO L98 nessWitnessExtractor]: Location invariant after [L70-L70] (finished1 == (_Bool)1) && ((unsigned long )_argptr == 0UL) [2024-01-31 17:15:15,831 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:15:16,013 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-prod-cons-eq.wvr.c[4419,4432] [2024-01-31 17:15:16,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:15:16,037 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:15:16,054 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 17:15:16,070 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-prod-cons-eq.wvr.c[4419,4432] [2024-01-31 17:15:16,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:15:16,090 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:15:16,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16 WrapperNode [2024-01-31 17:15:16,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:15:16,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:15:16,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:15:16,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:15:16,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,117 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,143 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 414 [2024-01-31 17:15:16,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:15:16,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:15:16,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:15:16,144 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:15:16,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,156 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,183 INFO L175 MemorySlicer]: Split 30 memory accesses to 7 slices as follows [2, 2, 2, 2, 3, 3, 16]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 1, 1, 1, 1, 1, 4]. [2024-01-31 17:15:16,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:15:16,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:15:16,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:15:16,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:15:16,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (1/1) ... [2024-01-31 17:15:16,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:15:16,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:15:16,263 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 17:15:16,293 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 17:15:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:15:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-01-31 17:15:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-01-31 17:15:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-01-31 17:15:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-01-31 17:15:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-01-31 17:15:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-01-31 17:15:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-01-31 17:15:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:15:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:15:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:15:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:15:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:15:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:15:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 17:15:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-31 17:15:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:15:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 17:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-31 17:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-01-31 17:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-01-31 17:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-01-31 17:15:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-01-31 17:15:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-01-31 17:15:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-01-31 17:15:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-01-31 17:15:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:15:16,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:15:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:15:16,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:15:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:15:16,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:15:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:15:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:15:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:15:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:15:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:15:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 17:15:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-31 17:15:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:15:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:15:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:15:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:15:16,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:15:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:15:16,311 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 17:15:16,472 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:15:16,474 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:15:16,872 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:15:16,872 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:15:17,208 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:15:17,208 INFO L320 CfgBuilder]: Removed 9 assume(true) statements. [2024-01-31 17:15:17,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:15:17 BoogieIcfgContainer [2024-01-31 17:15:17,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:15:17,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:15:17,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:15:17,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:15:17,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:15:14" (1/4) ... [2024-01-31 17:15:17,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b39916c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:15:17, skipping insertion in model container [2024-01-31 17:15:17,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:15:15" (2/4) ... [2024-01-31 17:15:17,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b39916c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:15:17, skipping insertion in model container [2024-01-31 17:15:17,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:15:16" (3/4) ... [2024-01-31 17:15:17,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b39916c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:15:17, skipping insertion in model container [2024-01-31 17:15:17,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:15:17" (4/4) ... [2024-01-31 17:15:17,215 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-01-31 17:15:17,229 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:15:17,229 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:15:17,229 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:15:17,268 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 17:15:17,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 45 transitions, 111 flow [2024-01-31 17:15:17,328 INFO L124 PetriNetUnfolderBase]: 9/42 cut-off events. [2024-01-31 17:15:17,328 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:15:17,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 9/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-01-31 17:15:17,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 45 transitions, 111 flow [2024-01-31 17:15:17,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 41 transitions, 100 flow [2024-01-31 17:15:17,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:15:17,344 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;@15f606eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:15:17,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 17:15:17,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:15:17,355 INFO L124 PetriNetUnfolderBase]: 9/40 cut-off events. [2024-01-31 17:15:17,355 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:15:17,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:17,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:17,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:17,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:17,361 INFO L85 PathProgramCache]: Analyzing trace with hash 652341918, now seen corresponding path program 1 times [2024-01-31 17:15:17,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:17,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761561473] [2024-01-31 17:15:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:17,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:17,751 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 17:15:17,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:17,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761561473] [2024-01-31 17:15:17,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761561473] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:17,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:17,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:15:17,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097315198] [2024-01-31 17:15:17,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:17,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:15:17,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:17,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:15:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:15:17,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:15:17,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 17:15:17,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:17,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:15:17,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:17,976 INFO L124 PetriNetUnfolderBase]: 537/847 cut-off events. [2024-01-31 17:15:17,976 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-01-31 17:15:17,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 847 events. 537/847 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3823 event pairs, 96 based on Foata normal form. 1/728 useless extension candidates. Maximal degree in co-relation 1400. Up to 533 conditions per place. [2024-01-31 17:15:17,983 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 45 selfloop transitions, 3 changer transitions 1/57 dead transitions. [2024-01-31 17:15:17,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 242 flow [2024-01-31 17:15:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:15:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:15:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-01-31 17:15:17,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6148148148148148 [2024-01-31 17:15:17,993 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 100 flow. Second operand 3 states and 83 transitions. [2024-01-31 17:15:17,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 242 flow [2024-01-31 17:15:17,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 17:15:17,998 INFO L231 Difference]: Finished difference. Result has 39 places, 43 transitions, 107 flow [2024-01-31 17:15:17,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=39, PETRI_TRANSITIONS=43} [2024-01-31 17:15:18,001 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2024-01-31 17:15:18,002 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 43 transitions, 107 flow [2024-01-31 17:15:18,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 17:15:18,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:18,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:18,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:15:18,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:18,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:18,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1610715636, now seen corresponding path program 1 times [2024-01-31 17:15:18,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:18,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209689325] [2024-01-31 17:15:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:18,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:18,233 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 17:15:18,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209689325] [2024-01-31 17:15:18,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209689325] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:18,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:18,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:15:18,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607852476] [2024-01-31 17:15:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:18,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:15:18,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:15:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:15:18,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:15:18,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 43 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 17:15:18,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:18,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:15:18,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:18,425 INFO L124 PetriNetUnfolderBase]: 604/971 cut-off events. [2024-01-31 17:15:18,425 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-01-31 17:15:18,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2193 conditions, 971 events. 604/971 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4986 event pairs, 371 based on Foata normal form. 45/954 useless extension candidates. Maximal degree in co-relation 689. Up to 699 conditions per place. [2024-01-31 17:15:18,431 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 60 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-01-31 17:15:18,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 78 transitions, 330 flow [2024-01-31 17:15:18,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:15:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:15:18,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-01-31 17:15:18,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5511111111111111 [2024-01-31 17:15:18,433 INFO L175 Difference]: Start difference. First operand has 39 places, 43 transitions, 107 flow. Second operand 5 states and 124 transitions. [2024-01-31 17:15:18,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 78 transitions, 330 flow [2024-01-31 17:15:18,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:15:18,435 INFO L231 Difference]: Finished difference. Result has 45 places, 52 transitions, 184 flow [2024-01-31 17:15:18,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=45, PETRI_TRANSITIONS=52} [2024-01-31 17:15:18,435 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-01-31 17:15:18,436 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 52 transitions, 184 flow [2024-01-31 17:15:18,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 17:15:18,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:18,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:18,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:15:18,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:18,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:18,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1555059399, now seen corresponding path program 1 times [2024-01-31 17:15:18,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:18,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15735231] [2024-01-31 17:15:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:18,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:15:18,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:18,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15735231] [2024-01-31 17:15:18,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15735231] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:18,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:18,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:15:18,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564483763] [2024-01-31 17:15:18,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:18,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:15:18,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:18,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:15:18,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:15:18,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:15:18,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 52 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:15:18,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:18,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:15:18,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:18,893 INFO L124 PetriNetUnfolderBase]: 875/1503 cut-off events. [2024-01-31 17:15:18,893 INFO L125 PetriNetUnfolderBase]: For 575/575 co-relation queries the response was YES. [2024-01-31 17:15:18,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3455 conditions, 1503 events. 875/1503 cut-off events. For 575/575 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9004 event pairs, 591 based on Foata normal form. 50/1445 useless extension candidates. Maximal degree in co-relation 2488. Up to 903 conditions per place. [2024-01-31 17:15:18,900 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 65 selfloop transitions, 15 changer transitions 1/89 dead transitions. [2024-01-31 17:15:18,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 89 transitions, 476 flow [2024-01-31 17:15:18,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:15:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:15:18,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-01-31 17:15:18,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377777777777778 [2024-01-31 17:15:18,905 INFO L175 Difference]: Start difference. First operand has 45 places, 52 transitions, 184 flow. Second operand 5 states and 121 transitions. [2024-01-31 17:15:18,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 89 transitions, 476 flow [2024-01-31 17:15:18,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 89 transitions, 472 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:15:18,910 INFO L231 Difference]: Finished difference. Result has 51 places, 64 transitions, 324 flow [2024-01-31 17:15:18,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=51, PETRI_TRANSITIONS=64} [2024-01-31 17:15:18,911 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-01-31 17:15:18,911 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 64 transitions, 324 flow [2024-01-31 17:15:18,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:15:18,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:18,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:18,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:15:18,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:18,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:18,912 INFO L85 PathProgramCache]: Analyzing trace with hash -244509725, now seen corresponding path program 1 times [2024-01-31 17:15:18,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:18,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523112162] [2024-01-31 17:15:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:18,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:19,014 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 17:15:19,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:19,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523112162] [2024-01-31 17:15:19,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523112162] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:19,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:19,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:15:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708504538] [2024-01-31 17:15:19,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:19,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:15:19,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:15:19,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:15:19,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:15:19,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 64 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:15:19,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:19,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:15:19,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:19,196 INFO L124 PetriNetUnfolderBase]: 699/1238 cut-off events. [2024-01-31 17:15:19,196 INFO L125 PetriNetUnfolderBase]: For 760/760 co-relation queries the response was YES. [2024-01-31 17:15:19,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3054 conditions, 1238 events. 699/1238 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6896 event pairs, 232 based on Foata normal form. 60/1238 useless extension candidates. Maximal degree in co-relation 2558. Up to 672 conditions per place. [2024-01-31 17:15:19,202 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 52 selfloop transitions, 2 changer transitions 19/81 dead transitions. [2024-01-31 17:15:19,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 525 flow [2024-01-31 17:15:19,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:15:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:15:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-01-31 17:15:19,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6148148148148148 [2024-01-31 17:15:19,204 INFO L175 Difference]: Start difference. First operand has 51 places, 64 transitions, 324 flow. Second operand 3 states and 83 transitions. [2024-01-31 17:15:19,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 525 flow [2024-01-31 17:15:19,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 81 transitions, 515 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-31 17:15:19,209 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 174 flow [2024-01-31 17:15:19,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-01-31 17:15:19,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-01-31 17:15:19,211 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 174 flow [2024-01-31 17:15:19,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:15:19,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:19,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:19,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:15:19,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:19,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:19,214 INFO L85 PathProgramCache]: Analyzing trace with hash 220793064, now seen corresponding path program 1 times [2024-01-31 17:15:19,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:19,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912250457] [2024-01-31 17:15:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:19,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:15:19,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:19,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912250457] [2024-01-31 17:15:19,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912250457] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:15:19,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603324163] [2024-01-31 17:15:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:19,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:15:19,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:15:19,364 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 17:15:19,391 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 17:15:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:19,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 17:15:19,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:15:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:15:19,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:15:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:15:19,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603324163] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:15:19,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:15:19,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2024-01-31 17:15:19,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099462658] [2024-01-31 17:15:19,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:19,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:15:19,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:19,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:15:19,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:15:19,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:15:19,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 17:15:19,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:19,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:15:19,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:19,777 INFO L124 PetriNetUnfolderBase]: 499/811 cut-off events. [2024-01-31 17:15:19,777 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2024-01-31 17:15:19,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 811 events. 499/811 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3965 event pairs, 329 based on Foata normal form. 0/764 useless extension candidates. Maximal degree in co-relation 2201. Up to 744 conditions per place. [2024-01-31 17:15:19,782 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 35 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-01-31 17:15:19,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 254 flow [2024-01-31 17:15:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:15:19,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:15:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-01-31 17:15:19,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40444444444444444 [2024-01-31 17:15:19,783 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 174 flow. Second operand 5 states and 91 transitions. [2024-01-31 17:15:19,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 254 flow [2024-01-31 17:15:19,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 228 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-01-31 17:15:19,785 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 164 flow [2024-01-31 17:15:19,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-01-31 17:15:19,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-01-31 17:15:19,786 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 164 flow [2024-01-31 17:15:19,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 17:15:19,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:19,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:19,801 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 17:15:19,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:15:19,999 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:19,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash -236324184, now seen corresponding path program 1 times [2024-01-31 17:15:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815219120] [2024-01-31 17:15:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:20,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:15:20,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:20,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815219120] [2024-01-31 17:15:20,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815219120] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:20,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:20,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:15:20,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34648987] [2024-01-31 17:15:20,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:20,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:15:20,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:20,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:15:20,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:15:20,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:15:20,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:15:20,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:20,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:15:20,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:20,289 INFO L124 PetriNetUnfolderBase]: 641/1095 cut-off events. [2024-01-31 17:15:20,289 INFO L125 PetriNetUnfolderBase]: For 1313/1313 co-relation queries the response was YES. [2024-01-31 17:15:20,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2827 conditions, 1095 events. 641/1095 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6062 event pairs, 456 based on Foata normal form. 48/1107 useless extension candidates. Maximal degree in co-relation 2812. Up to 750 conditions per place. [2024-01-31 17:15:20,294 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 40 selfloop transitions, 2 changer transitions 19/69 dead transitions. [2024-01-31 17:15:20,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 69 transitions, 346 flow [2024-01-31 17:15:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:15:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:15:20,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-01-31 17:15:20,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-01-31 17:15:20,296 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 164 flow. Second operand 4 states and 100 transitions. [2024-01-31 17:15:20,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 69 transitions, 346 flow [2024-01-31 17:15:20,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 336 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 17:15:20,298 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 170 flow [2024-01-31 17:15:20,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-01-31 17:15:20,298 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-01-31 17:15:20,299 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 170 flow [2024-01-31 17:15:20,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:15:20,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:20,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:20,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:15:20,300 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:20,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:20,300 INFO L85 PathProgramCache]: Analyzing trace with hash 370630356, now seen corresponding path program 1 times [2024-01-31 17:15:20,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:20,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331965394] [2024-01-31 17:15:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:20,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 17:15:20,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:20,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331965394] [2024-01-31 17:15:20,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331965394] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:20,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:20,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:15:20,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907355523] [2024-01-31 17:15:20,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:20,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:15:20,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:20,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:15:20,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:15:20,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:15:20,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 17:15:20,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:20,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:15:20,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:20,587 INFO L124 PetriNetUnfolderBase]: 592/929 cut-off events. [2024-01-31 17:15:20,587 INFO L125 PetriNetUnfolderBase]: For 1205/1205 co-relation queries the response was YES. [2024-01-31 17:15:20,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 929 events. 592/929 cut-off events. For 1205/1205 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4487 event pairs, 119 based on Foata normal form. 22/919 useless extension candidates. Maximal degree in co-relation 2604. Up to 595 conditions per place. [2024-01-31 17:15:20,593 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 51 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-01-31 17:15:20,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 330 flow [2024-01-31 17:15:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:15:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:15:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-01-31 17:15:20,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851851851851851 [2024-01-31 17:15:20,596 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 170 flow. Second operand 3 states and 79 transitions. [2024-01-31 17:15:20,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 330 flow [2024-01-31 17:15:20,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 320 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 17:15:20,598 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 176 flow [2024-01-31 17:15:20,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-01-31 17:15:20,599 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-01-31 17:15:20,599 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 176 flow [2024-01-31 17:15:20,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 17:15:20,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:20,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:20,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:15:20,600 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:20,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1753163165, now seen corresponding path program 1 times [2024-01-31 17:15:20,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:20,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313581895] [2024-01-31 17:15:20,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:20,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 17:15:20,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:20,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313581895] [2024-01-31 17:15:20,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313581895] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:20,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:20,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:15:20,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084940330] [2024-01-31 17:15:20,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:20,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:15:20,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:20,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:15:20,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:15:20,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:15:20,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 17:15:20,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:20,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:15:20,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:20,973 INFO L124 PetriNetUnfolderBase]: 617/987 cut-off events. [2024-01-31 17:15:20,974 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2024-01-31 17:15:20,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 987 events. 617/987 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4774 event pairs, 398 based on Foata normal form. 21/985 useless extension candidates. Maximal degree in co-relation 2815. Up to 864 conditions per place. [2024-01-31 17:15:20,979 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 40 selfloop transitions, 2 changer transitions 22/72 dead transitions. [2024-01-31 17:15:20,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 383 flow [2024-01-31 17:15:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:15:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:15:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-01-31 17:15:20,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-01-31 17:15:20,981 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 176 flow. Second operand 5 states and 108 transitions. [2024-01-31 17:15:20,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 383 flow [2024-01-31 17:15:20,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 72 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:15:20,983 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 196 flow [2024-01-31 17:15:20,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-01-31 17:15:20,983 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-01-31 17:15:20,983 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 196 flow [2024-01-31 17:15:20,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 17:15:20,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:20,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:20,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:15:20,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:20,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:20,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1385775367, now seen corresponding path program 1 times [2024-01-31 17:15:20,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:20,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784144398] [2024-01-31 17:15:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:20,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 17:15:21,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:21,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784144398] [2024-01-31 17:15:21,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784144398] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:21,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:21,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:15:21,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603144215] [2024-01-31 17:15:21,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:21,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:15:21,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:21,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:15:21,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:15:21,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-01-31 17:15:21,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 17:15:21,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:21,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-01-31 17:15:21,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:21,445 INFO L124 PetriNetUnfolderBase]: 1217/1877 cut-off events. [2024-01-31 17:15:21,445 INFO L125 PetriNetUnfolderBase]: For 2067/2067 co-relation queries the response was YES. [2024-01-31 17:15:21,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5254 conditions, 1877 events. 1217/1877 cut-off events. For 2067/2067 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9196 event pairs, 254 based on Foata normal form. 128/1996 useless extension candidates. Maximal degree in co-relation 5224. Up to 538 conditions per place. [2024-01-31 17:15:21,455 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 77 selfloop transitions, 10 changer transitions 0/92 dead transitions. [2024-01-31 17:15:21,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 537 flow [2024-01-31 17:15:21,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:15:21,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:15:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-01-31 17:15:21,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2024-01-31 17:15:21,457 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 196 flow. Second operand 5 states and 112 transitions. [2024-01-31 17:15:21,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 537 flow [2024-01-31 17:15:21,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 92 transitions, 521 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-31 17:15:21,460 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 254 flow [2024-01-31 17:15:21,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-01-31 17:15:21,462 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-01-31 17:15:21,462 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 254 flow [2024-01-31 17:15:21,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 17:15:21,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:21,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:21,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:15:21,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:21,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:21,463 INFO L85 PathProgramCache]: Analyzing trace with hash -937982811, now seen corresponding path program 2 times [2024-01-31 17:15:21,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:21,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189395490] [2024-01-31 17:15:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:21,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:15:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:21,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189395490] [2024-01-31 17:15:21,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189395490] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:21,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:21,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:15:21,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713506918] [2024-01-31 17:15:21,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:21,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:15:21,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:21,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:15:21,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:15:21,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:15:21,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:15:21,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:21,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:15:21,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:21,964 INFO L124 PetriNetUnfolderBase]: 1069/1727 cut-off events. [2024-01-31 17:15:21,964 INFO L125 PetriNetUnfolderBase]: For 3584/3723 co-relation queries the response was YES. [2024-01-31 17:15:21,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5685 conditions, 1727 events. 1069/1727 cut-off events. For 3584/3723 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8819 event pairs, 583 based on Foata normal form. 177/1807 useless extension candidates. Maximal degree in co-relation 5652. Up to 1231 conditions per place. [2024-01-31 17:15:21,974 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 43 selfloop transitions, 2 changer transitions 26/84 dead transitions. [2024-01-31 17:15:21,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 504 flow [2024-01-31 17:15:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:15:21,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:15:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-01-31 17:15:21,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022222222222222 [2024-01-31 17:15:21,976 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 254 flow. Second operand 5 states and 113 transitions. [2024-01-31 17:15:21,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 504 flow [2024-01-31 17:15:21,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:15:21,979 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 276 flow [2024-01-31 17:15:21,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-01-31 17:15:21,980 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-01-31 17:15:21,981 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 276 flow [2024-01-31 17:15:21,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:15:21,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:21,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:21,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:15:21,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:21,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:21,982 INFO L85 PathProgramCache]: Analyzing trace with hash -370152439, now seen corresponding path program 1 times [2024-01-31 17:15:21,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:21,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006974383] [2024-01-31 17:15:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:21,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 17:15:22,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:22,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006974383] [2024-01-31 17:15:22,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006974383] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:22,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:22,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:15:22,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402315267] [2024-01-31 17:15:22,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:22,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:15:22,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:22,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:15:22,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:15:22,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-01-31 17:15:22,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 17:15:22,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:22,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-01-31 17:15:22,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:22,746 INFO L124 PetriNetUnfolderBase]: 2007/3012 cut-off events. [2024-01-31 17:15:22,746 INFO L125 PetriNetUnfolderBase]: For 5181/5184 co-relation queries the response was YES. [2024-01-31 17:15:22,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10171 conditions, 3012 events. 2007/3012 cut-off events. For 5181/5184 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 15329 event pairs, 55 based on Foata normal form. 58/3066 useless extension candidates. Maximal degree in co-relation 10138. Up to 940 conditions per place. [2024-01-31 17:15:22,767 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 120 selfloop transitions, 23 changer transitions 0/148 dead transitions. [2024-01-31 17:15:22,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 148 transitions, 1001 flow [2024-01-31 17:15:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:15:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:15:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-01-31 17:15:22,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-01-31 17:15:22,768 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 276 flow. Second operand 9 states and 186 transitions. [2024-01-31 17:15:22,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 148 transitions, 1001 flow [2024-01-31 17:15:22,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 148 transitions, 981 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-01-31 17:15:22,774 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 498 flow [2024-01-31 17:15:22,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=498, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2024-01-31 17:15:22,775 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2024-01-31 17:15:22,775 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 498 flow [2024-01-31 17:15:22,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 17:15:22,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:22,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:22,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:15:22,775 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:22,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:22,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1255692330, now seen corresponding path program 1 times [2024-01-31 17:15:22,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:22,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205819289] [2024-01-31 17:15:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:22,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:15:22,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:22,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205819289] [2024-01-31 17:15:22,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205819289] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:15:22,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:15:22,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:15:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072902957] [2024-01-31 17:15:22,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:15:22,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:15:22,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:15:22,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:15:22,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:15:22,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:15:22,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 17:15:22,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:15:22,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:15:22,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:15:23,163 INFO L124 PetriNetUnfolderBase]: 1305/2068 cut-off events. [2024-01-31 17:15:23,163 INFO L125 PetriNetUnfolderBase]: For 7694/7904 co-relation queries the response was YES. [2024-01-31 17:15:23,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8480 conditions, 2068 events. 1305/2068 cut-off events. For 7694/7904 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10589 event pairs, 352 based on Foata normal form. 209/2175 useless extension candidates. Maximal degree in co-relation 8439. Up to 1064 conditions per place. [2024-01-31 17:15:23,179 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 75 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-01-31 17:15:23,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 101 transitions, 837 flow [2024-01-31 17:15:23,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:15:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:15:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-01-31 17:15:23,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851851851851851 [2024-01-31 17:15:23,181 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 498 flow. Second operand 3 states and 79 transitions. [2024-01-31 17:15:23,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 101 transitions, 837 flow [2024-01-31 17:15:23,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 816 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-01-31 17:15:23,190 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 508 flow [2024-01-31 17:15:23,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2024-01-31 17:15:23,191 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2024-01-31 17:15:23,191 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 508 flow [2024-01-31 17:15:23,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 17:15:23,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:15:23,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:15:23,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 17:15:23,192 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:15:23,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:15:23,192 INFO L85 PathProgramCache]: Analyzing trace with hash -491476558, now seen corresponding path program 1 times [2024-01-31 17:15:23,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:15:23,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161495310] [2024-01-31 17:15:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:15:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 17:15:24,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:15:24,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161495310] [2024-01-31 17:15:24,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161495310] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:15:24,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778212663] [2024-01-31 17:15:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:15:24,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:15:24,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:15:24,265 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 17:15:24,269 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 17:15:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:15:24,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 34 conjunts are in the unsatisfiable core [2024-01-31 17:15:24,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:15:24,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-01-31 17:15:24,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-01-31 17:15:24,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-01-31 17:15:24,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2024-01-31 17:15:24,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-01-31 17:15:24,847 INFO L349 Elim1Store]: treesize reduction 20, result has 62.3 percent of original size [2024-01-31 17:15:24,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2024-01-31 17:15:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 17:15:24,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:15:26,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 91 [2024-01-31 17:15:26,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:15:26,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 314 treesize of output 298 [2024-01-31 17:15:26,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 274 [2024-01-31 17:15:26,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:15:26,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 806 treesize of output 718 [2024-01-31 17:15:29,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:15:29,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1668 treesize of output 1644 [2024-01-31 17:15:29,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2024-01-31 17:22:17,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-01-31 17:22:17,381 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-01-31 17:22:17,382 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-01-31 17:22:17,395 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 17:22:17,595 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,SelfDestructingSolverStorable12 [2024-01-31 17:22:17,596 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:516) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.pushInner(QuantifierPusher.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:194) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.pushInner(QuantifierPusher.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:194) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 91 more [2024-01-31 17:22:17,601 INFO L158 Benchmark]: Toolchain (without parser) took 421929.78ms. Allocated memory was 142.6MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 56.6MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-01-31 17:22:17,601 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:22:17,601 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:22:17,601 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.84ms. Allocated memory was 142.6MB in the beginning and 205.5MB in the end (delta: 62.9MB). Free memory was 56.4MB in the beginning and 163.0MB in the end (delta: -106.6MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2024-01-31 17:22:17,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.84ms. Allocated memory is still 205.5MB. Free memory was 163.0MB in the beginning and 159.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:22:17,602 INFO L158 Benchmark]: Boogie Preprocessor took 90.28ms. Allocated memory is still 205.5MB. Free memory was 159.9MB in the beginning and 154.7MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-01-31 17:22:17,602 INFO L158 Benchmark]: RCFGBuilder took 974.04ms. Allocated memory is still 205.5MB. Free memory was 154.7MB in the beginning and 90.4MB in the end (delta: 64.3MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2024-01-31 17:22:17,602 INFO L158 Benchmark]: TraceAbstraction took 420390.16ms. Allocated memory was 205.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 90.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-01-31 17:22:17,603 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.84ms. Allocated memory was 142.6MB in the beginning and 205.5MB in the end (delta: 62.9MB). Free memory was 56.4MB in the beginning and 163.0MB in the end (delta: -106.6MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.84ms. Allocated memory is still 205.5MB. Free memory was 163.0MB in the beginning and 159.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.28ms. Allocated memory is still 205.5MB. Free memory was 159.9MB in the beginning and 154.7MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 974.04ms. Allocated memory is still 205.5MB. Free memory was 154.7MB in the beginning and 90.4MB in the end (delta: 64.3MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * TraceAbstraction took 420390.16ms. Allocated memory was 205.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 90.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-prod-cons-eq.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-prod-cons-eq.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 17:22:19,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:22:19,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-01-31 17:22:19,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:22:19,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:22:19,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:22:19,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:22:19,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:22:19,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:22:19,899 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:22:19,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:22:19,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:22:19,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:22:19,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:22:19,902 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:22:19,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:22:19,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:22:19,903 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:22:19,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:22:19,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:22:19,903 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:22:19,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:22:19,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:22:19,905 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-01-31 17:22:19,905 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-01-31 17:22:19,905 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:22:19,905 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-01-31 17:22:19,905 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:22:19,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:22:19,906 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:22:19,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:22:19,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:22:19,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:22:19,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:22:19,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:22:19,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:22:19,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:22:19,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:22:19,909 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-01-31 17:22:19,909 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-01-31 17:22:19,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:22:19,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:22:19,910 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:22:19,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:22:19,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:22:19,910 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-01-31 17:22:19,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:22:20,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:22:20,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:22:20,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:22:20,175 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:22:20,175 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:22:20,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2024-01-31 17:22:21,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:22:21,515 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:22:21,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2024-01-31 17:22:21,527 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0343f7e6/56d8e983ee0648529a30f58a370bc997/FLAG58f213921 [2024-01-31 17:22:21,540 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0343f7e6/56d8e983ee0648529a30f58a370bc997 [2024-01-31 17:22:21,542 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:22:21,543 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:22:21,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-prod-cons-eq.wvr.yml/witness.yml [2024-01-31 17:22:21,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:22:21,738 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:22:21,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:22:21,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:22:21,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:22:21,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:22:21" (1/2) ... [2024-01-31 17:22:21,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48bb6cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:22:21, skipping insertion in model container [2024-01-31 17:22:21,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:22:21" (1/2) ... [2024-01-31 17:22:21,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2bda9713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:22:21, skipping insertion in model container [2024-01-31 17:22:21,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:22:21" (2/2) ... [2024-01-31 17:22:21,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48bb6cba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:22:21, skipping insertion in model container [2024-01-31 17:22:21,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:22:21" (2/2) ... [2024-01-31 17:22:21,747 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:22:21,841 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:22:21,842 INFO L98 nessWitnessExtractor]: Location invariant after [L70-L70] (finished1 == (_Bool)1) && ((unsigned long )_argptr == 0UL) [2024-01-31 17:22:21,867 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:22:22,048 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-prod-cons-eq.wvr.c[4419,4432] [2024-01-31 17:22:22,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:22:22,081 INFO L201 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-01-31 17:22:22,088 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:22:22,115 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-prod-cons-eq.wvr.c[4419,4432] [2024-01-31 17:22:22,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:22:22,136 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:22:22,159 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 17:22:22,169 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-prod-cons-eq.wvr.c[4419,4432] [2024-01-31 17:22:22,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:22:22,200 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:22:22,200 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:22:22 WrapperNode [2024-01-31 17:22:22,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:22:22,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:22:22,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:22:22,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:22:22,206 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,221 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,248 INFO L138 Inliner]: procedures = 30, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 402 [2024-01-31 17:22:22,248 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:22:22,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:22:22,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:22:22,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:22:22,261 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,269 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,275 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,296 INFO L175 MemorySlicer]: Split 30 memory accesses to 7 slices as follows [3, 2, 16, 2, 2, 3, 2]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [1, 0, 4, 1, 1, 1, 1]. [2024-01-31 17:22:22,296 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,296 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,309 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,313 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,317 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,320 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:22:22,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:22:22,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:22:22,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:22:22,326 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 05:22:22" (1/1) ... [2024-01-31 17:22:22,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:22:22,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:22,352 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 17:22:22,379 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 17:22:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:22:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-01-31 17:22:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-01-31 17:22:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-01-31 17:22:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-01-31 17:22:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2024-01-31 17:22:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2024-01-31 17:22:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2024-01-31 17:22:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-01-31 17:22:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-01-31 17:22:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-01-31 17:22:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-01-31 17:22:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-01-31 17:22:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-01-31 17:22:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2024-01-31 17:22:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-01-31 17:22:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-01-31 17:22:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-01-31 17:22:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-01-31 17:22:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-01-31 17:22:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-01-31 17:22:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-01-31 17:22:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:22:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-01-31 17:22:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-01-31 17:22:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-01-31 17:22:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-01-31 17:22:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-01-31 17:22:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2024-01-31 17:22:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2024-01-31 17:22:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-01-31 17:22:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-01-31 17:22:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-01-31 17:22:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-01-31 17:22:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-01-31 17:22:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-01-31 17:22:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-01-31 17:22:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:22:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:22:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:22:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:22:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:22:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:22:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:22:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:22:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:22:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:22:22,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:22:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-01-31 17:22:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-01-31 17:22:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-01-31 17:22:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-01-31 17:22:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2024-01-31 17:22:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2024-01-31 17:22:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2024-01-31 17:22:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:22:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-01-31 17:22:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-01-31 17:22:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-01-31 17:22:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-01-31 17:22:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-01-31 17:22:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2024-01-31 17:22:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2024-01-31 17:22:22,406 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 17:22:22,571 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:22:22,574 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:22:23,217 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:22:23,217 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:22:23,571 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:22:23,571 INFO L320 CfgBuilder]: Removed 9 assume(true) statements. [2024-01-31 17:22:23,571 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:22:23 BoogieIcfgContainer [2024-01-31 17:22:23,571 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:22:23,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:22:23,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:22:23,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:22:23,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:22:21" (1/4) ... [2024-01-31 17:22:23,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5898e04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:22:23, skipping insertion in model container [2024-01-31 17:22:23,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:22:21" (2/4) ... [2024-01-31 17:22:23,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5898e04a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:22:23, skipping insertion in model container [2024-01-31 17:22:23,576 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 05:22:22" (3/4) ... [2024-01-31 17:22:23,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5898e04a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:22:23, skipping insertion in model container [2024-01-31 17:22:23,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:22:23" (4/4) ... [2024-01-31 17:22:23,577 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-01-31 17:22:23,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:22:23,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:22:23,591 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:22:23,633 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 17:22:23,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 45 transitions, 111 flow [2024-01-31 17:22:23,677 INFO L124 PetriNetUnfolderBase]: 9/42 cut-off events. [2024-01-31 17:22:23,678 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:22:23,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 9/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-01-31 17:22:23,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 45 transitions, 111 flow [2024-01-31 17:22:23,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 41 transitions, 100 flow [2024-01-31 17:22:23,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:22:23,702 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;@1947a47d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:22:23,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 17:22:23,730 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:22:23,731 INFO L124 PetriNetUnfolderBase]: 9/40 cut-off events. [2024-01-31 17:22:23,731 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:22:23,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:23,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:23,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:22:23,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:23,736 INFO L85 PathProgramCache]: Analyzing trace with hash -58597642, now seen corresponding path program 1 times [2024-01-31 17:22:23,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:22:23,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252198696] [2024-01-31 17:22:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:23,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:23,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:22:23,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:22:23,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-01-31 17:22:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:24,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 17:22:24,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:24,131 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 17:22:24,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:22:24,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:22:24,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252198696] [2024-01-31 17:22:24,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252198696] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:22:24,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:22:24,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:22:24,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217567182] [2024-01-31 17:22:24,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:22:24,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:22:24,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:22:24,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:22:24,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:22:24,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-01-31 17:22:24,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 17:22:24,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:24,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-01-31 17:22:24,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:24,678 INFO L124 PetriNetUnfolderBase]: 788/1161 cut-off events. [2024-01-31 17:22:24,678 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-01-31 17:22:24,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2379 conditions, 1161 events. 788/1161 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4759 event pairs, 159 based on Foata normal form. 54/998 useless extension candidates. Maximal degree in co-relation 2067. Up to 358 conditions per place. [2024-01-31 17:22:24,686 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 62 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2024-01-31 17:22:24,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 75 transitions, 323 flow [2024-01-31 17:22:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:22:24,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:22:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-01-31 17:22:24,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-01-31 17:22:24,697 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 100 flow. Second operand 5 states and 114 transitions. [2024-01-31 17:22:24,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 75 transitions, 323 flow [2024-01-31 17:22:24,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 75 transitions, 301 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 17:22:24,703 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 150 flow [2024-01-31 17:22:24,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2024-01-31 17:22:24,707 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2024-01-31 17:22:24,707 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 150 flow [2024-01-31 17:22:24,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 17:22:24,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:24,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:24,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-01-31 17:22:24,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:24,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:22:24,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1425852699, now seen corresponding path program 1 times [2024-01-31 17:22:24,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:22:24,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190242142] [2024-01-31 17:22:24,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:24,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:24,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:22:24,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:22:24,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-01-31 17:22:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:25,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjunts are in the unsatisfiable core [2024-01-31 17:22:25,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:25,162 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 17:22:25,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:22:25,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:22:25,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190242142] [2024-01-31 17:22:25,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190242142] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:22:25,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:22:25,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:22:25,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707956385] [2024-01-31 17:22:25,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:22:25,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:22:25,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:22:25,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:22:25,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:22:25,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:22:25,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 17:22:25,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:25,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:22:25,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:25,442 INFO L124 PetriNetUnfolderBase]: 574/892 cut-off events. [2024-01-31 17:22:25,442 INFO L125 PetriNetUnfolderBase]: For 512/563 co-relation queries the response was YES. [2024-01-31 17:22:25,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2193 conditions, 892 events. 574/892 cut-off events. For 512/563 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3839 event pairs, 130 based on Foata normal form. 34/814 useless extension candidates. Maximal degree in co-relation 1123. Up to 507 conditions per place. [2024-01-31 17:22:25,447 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 45 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-01-31 17:22:25,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 288 flow [2024-01-31 17:22:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:22:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:22:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-01-31 17:22:25,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851851851851851 [2024-01-31 17:22:25,449 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 150 flow. Second operand 3 states and 79 transitions. [2024-01-31 17:22:25,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 288 flow [2024-01-31 17:22:25,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:22:25,452 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 162 flow [2024-01-31 17:22:25,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2024-01-31 17:22:25,453 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-01-31 17:22:25,453 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 162 flow [2024-01-31 17:22:25,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 17:22:25,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:25,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:25,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:25,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:25,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:22:25,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:25,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1881368295, now seen corresponding path program 1 times [2024-01-31 17:22:25,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:22:25,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340068934] [2024-01-31 17:22:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:25,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:25,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:22:25,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:22:25,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-01-31 17:22:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:25,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-31 17:22:25,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:22:25,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:22:25,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:22:25,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340068934] [2024-01-31 17:22:25,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340068934] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:25,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:22:25,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-01-31 17:22:25,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761282170] [2024-01-31 17:22:25,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:25,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:22:25,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:22:25,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:22:25,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-01-31 17:22:25,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-01-31 17:22:25,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 17:22:25,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:25,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-01-31 17:22:25,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:27,943 INFO L124 PetriNetUnfolderBase]: 6588/9802 cut-off events. [2024-01-31 17:22:27,943 INFO L125 PetriNetUnfolderBase]: For 6241/6265 co-relation queries the response was YES. [2024-01-31 17:22:27,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28397 conditions, 9802 events. 6588/9802 cut-off events. For 6241/6265 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 54883 event pairs, 158 based on Foata normal form. 236/9285 useless extension candidates. Maximal degree in co-relation 10678. Up to 2215 conditions per place. [2024-01-31 17:22:27,998 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 286 selfloop transitions, 63 changer transitions 0/356 dead transitions. [2024-01-31 17:22:27,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 356 transitions, 2009 flow [2024-01-31 17:22:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-01-31 17:22:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-01-31 17:22:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 445 transitions. [2024-01-31 17:22:28,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2024-01-31 17:22:28,004 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 162 flow. Second operand 19 states and 445 transitions. [2024-01-31 17:22:28,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 356 transitions, 2009 flow [2024-01-31 17:22:28,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 356 transitions, 1990 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:22:28,025 INFO L231 Difference]: Finished difference. Result has 68 places, 122 transitions, 666 flow [2024-01-31 17:22:28,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=666, PETRI_PLACES=68, PETRI_TRANSITIONS=122} [2024-01-31 17:22:28,026 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-01-31 17:22:28,026 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 122 transitions, 666 flow [2024-01-31 17:22:28,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 17:22:28,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:28,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:28,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:28,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:28,232 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:22:28,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:28,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1333998758, now seen corresponding path program 1 times [2024-01-31 17:22:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:22:28,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141802042] [2024-01-31 17:22:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:28,239 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:28,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:22:28,245 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:22:28,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-01-31 17:22:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:28,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:22:28,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:22:28,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:22:28,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:22:28,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141802042] [2024-01-31 17:22:28,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141802042] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:22:28,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:22:28,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:22:28,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122735522] [2024-01-31 17:22:28,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:22:28,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:22:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:22:28,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:22:28,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:22:28,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:22:28,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 122 transitions, 666 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:22:28,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:28,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:22:28,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:29,958 INFO L124 PetriNetUnfolderBase]: 4861/7782 cut-off events. [2024-01-31 17:22:29,959 INFO L125 PetriNetUnfolderBase]: For 11891/12162 co-relation queries the response was YES. [2024-01-31 17:22:29,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24839 conditions, 7782 events. 4861/7782 cut-off events. For 11891/12162 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 48753 event pairs, 2689 based on Foata normal form. 109/7033 useless extension candidates. Maximal degree in co-relation 18901. Up to 6403 conditions per place. [2024-01-31 17:22:30,000 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 59 selfloop transitions, 2 changer transitions 17/140 dead transitions. [2024-01-31 17:22:30,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 140 transitions, 861 flow [2024-01-31 17:22:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:22:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:22:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-01-31 17:22:30,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2024-01-31 17:22:30,002 INFO L175 Difference]: Start difference. First operand has 68 places, 122 transitions, 666 flow. Second operand 4 states and 97 transitions. [2024-01-31 17:22:30,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 140 transitions, 861 flow [2024-01-31 17:22:30,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 140 transitions, 861 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:22:30,031 INFO L231 Difference]: Finished difference. Result has 73 places, 123 transitions, 684 flow [2024-01-31 17:22:30,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=684, PETRI_PLACES=73, PETRI_TRANSITIONS=123} [2024-01-31 17:22:30,032 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-01-31 17:22:30,032 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 123 transitions, 684 flow [2024-01-31 17:22:30,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:22:30,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:30,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:30,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-01-31 17:22:30,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:30,237 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:22:30,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:30,238 INFO L85 PathProgramCache]: Analyzing trace with hash -680849319, now seen corresponding path program 1 times [2024-01-31 17:22:30,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:22:30,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332678163] [2024-01-31 17:22:30,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:30,239 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:30,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:22:30,252 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:22:30,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-01-31 17:22:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:30,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:22:30,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:22:30,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:22:30,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:22:30,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332678163] [2024-01-31 17:22:30,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332678163] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:22:30,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:22:30,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:22:30,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384426840] [2024-01-31 17:22:30,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:22:30,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:22:30,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:22:30,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:22:30,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:22:30,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:22:30,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 123 transitions, 684 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 17:22:30,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:30,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:22:30,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:31,950 INFO L124 PetriNetUnfolderBase]: 4882/7841 cut-off events. [2024-01-31 17:22:31,950 INFO L125 PetriNetUnfolderBase]: For 13245/13516 co-relation queries the response was YES. [2024-01-31 17:22:31,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25680 conditions, 7841 events. 4882/7841 cut-off events. For 13245/13516 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 49265 event pairs, 2689 based on Foata normal form. 127/7105 useless extension candidates. Maximal degree in co-relation 25654. Up to 6404 conditions per place. [2024-01-31 17:22:31,995 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 60 selfloop transitions, 2 changer transitions 24/148 dead transitions. [2024-01-31 17:22:31,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 148 transitions, 924 flow [2024-01-31 17:22:31,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:22:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:22:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-01-31 17:22:31,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-01-31 17:22:31,996 INFO L175 Difference]: Start difference. First operand has 73 places, 123 transitions, 684 flow. Second operand 5 states and 114 transitions. [2024-01-31 17:22:31,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 148 transitions, 924 flow [2024-01-31 17:22:32,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 148 transitions, 920 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:22:32,028 INFO L231 Difference]: Finished difference. Result has 78 places, 124 transitions, 702 flow [2024-01-31 17:22:32,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=702, PETRI_PLACES=78, PETRI_TRANSITIONS=124} [2024-01-31 17:22:32,029 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2024-01-31 17:22:32,029 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 124 transitions, 702 flow [2024-01-31 17:22:32,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 17:22:32,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:32,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:32,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:32,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:32,245 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:22:32,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:32,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1007478224, now seen corresponding path program 1 times [2024-01-31 17:22:32,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:22:32,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322535271] [2024-01-31 17:22:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:32,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:32,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:22:32,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:22:32,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-01-31 17:22:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:32,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2024-01-31 17:22:32,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:22:32,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:22:32,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:22:32,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322535271] [2024-01-31 17:22:32,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322535271] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:32,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:22:32,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-01-31 17:22:32,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615135038] [2024-01-31 17:22:32,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:32,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 17:22:32,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:22:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 17:22:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-31 17:22:32,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:22:32,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 124 transitions, 702 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 17:22:32,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:32,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:22:32,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:35,288 INFO L124 PetriNetUnfolderBase]: 9710/15517 cut-off events. [2024-01-31 17:22:35,288 INFO L125 PetriNetUnfolderBase]: For 34251/34781 co-relation queries the response was YES. [2024-01-31 17:22:35,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54168 conditions, 15517 events. 9710/15517 cut-off events. For 34251/34781 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 108685 event pairs, 5378 based on Foata normal form. 192/13995 useless extension candidates. Maximal degree in co-relation 54134. Up to 6400 conditions per place. [2024-01-31 17:22:35,405 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 113 selfloop transitions, 8 changer transitions 0/183 dead transitions. [2024-01-31 17:22:35,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 183 transitions, 1184 flow [2024-01-31 17:22:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:22:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:22:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-01-31 17:22:35,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-01-31 17:22:35,407 INFO L175 Difference]: Start difference. First operand has 78 places, 124 transitions, 702 flow. Second operand 8 states and 156 transitions. [2024-01-31 17:22:35,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 183 transitions, 1184 flow [2024-01-31 17:22:35,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 183 transitions, 1168 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-31 17:22:35,508 INFO L231 Difference]: Finished difference. Result has 84 places, 129 transitions, 741 flow [2024-01-31 17:22:35,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=84, PETRI_TRANSITIONS=129} [2024-01-31 17:22:35,509 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 42 predicate places. [2024-01-31 17:22:35,509 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 129 transitions, 741 flow [2024-01-31 17:22:35,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 17:22:35,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:35,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:35,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-01-31 17:22:35,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:35,715 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:22:35,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:35,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1736152536, now seen corresponding path program 1 times [2024-01-31 17:22:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:22:35,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046293862] [2024-01-31 17:22:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:35,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:35,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:22:35,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:22:35,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-01-31 17:22:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:36,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:22:36,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 17:22:36,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:22:36,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:22:36,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046293862] [2024-01-31 17:22:36,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046293862] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:22:36,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:22:36,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:22:36,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493106230] [2024-01-31 17:22:36,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:22:36,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:22:36,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:22:36,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:22:36,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:22:36,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:22:36,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 129 transitions, 741 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 17:22:36,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:36,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:22:36,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:38,260 INFO L124 PetriNetUnfolderBase]: 9724/15575 cut-off events. [2024-01-31 17:22:38,261 INFO L125 PetriNetUnfolderBase]: For 29958/30524 co-relation queries the response was YES. [2024-01-31 17:22:38,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53054 conditions, 15575 events. 9724/15575 cut-off events. For 29958/30524 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 108857 event pairs, 5382 based on Foata normal form. 248/14111 useless extension candidates. Maximal degree in co-relation 53017. Up to 12806 conditions per place. [2024-01-31 17:22:38,398 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 65 selfloop transitions, 3 changer transitions 19/149 dead transitions. [2024-01-31 17:22:38,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 149 transitions, 988 flow [2024-01-31 17:22:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:22:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:22:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-01-31 17:22:38,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-01-31 17:22:38,399 INFO L175 Difference]: Start difference. First operand has 84 places, 129 transitions, 741 flow. Second operand 4 states and 94 transitions. [2024-01-31 17:22:38,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 149 transitions, 988 flow [2024-01-31 17:22:38,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 149 transitions, 971 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-31 17:22:38,502 INFO L231 Difference]: Finished difference. Result has 87 places, 130 transitions, 749 flow [2024-01-31 17:22:38,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=749, PETRI_PLACES=87, PETRI_TRANSITIONS=130} [2024-01-31 17:22:38,503 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-01-31 17:22:38,503 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 130 transitions, 749 flow [2024-01-31 17:22:38,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 17:22:38,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:38,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:38,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:38,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:38,711 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:22:38,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1720246394, now seen corresponding path program 1 times [2024-01-31 17:22:38,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:22:38,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509439780] [2024-01-31 17:22:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:38,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:38,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:22:38,714 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:22:38,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-01-31 17:22:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:39,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-31 17:22:39,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 17:22:39,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:22:39,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:22:39,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509439780] [2024-01-31 17:22:39,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509439780] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:22:39,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:22:39,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:22:39,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458612234] [2024-01-31 17:22:39,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:22:39,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:22:39,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:22:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:22:39,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:22:39,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:22:39,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 130 transitions, 749 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 17:22:39,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:39,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:22:39,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:41,769 INFO L124 PetriNetUnfolderBase]: 11000/18337 cut-off events. [2024-01-31 17:22:41,770 INFO L125 PetriNetUnfolderBase]: For 34267/34649 co-relation queries the response was YES. [2024-01-31 17:22:41,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61510 conditions, 18337 events. 11000/18337 cut-off events. For 34267/34649 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 136043 event pairs, 6482 based on Foata normal form. 1066/17795 useless extension candidates. Maximal degree in co-relation 61472. Up to 13396 conditions per place. [2024-01-31 17:22:41,886 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 69 selfloop transitions, 2 changer transitions 30/163 dead transitions. [2024-01-31 17:22:41,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 163 transitions, 1090 flow [2024-01-31 17:22:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:22:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:22:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-01-31 17:22:41,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-01-31 17:22:41,889 INFO L175 Difference]: Start difference. First operand has 87 places, 130 transitions, 749 flow. Second operand 4 states and 98 transitions. [2024-01-31 17:22:41,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 163 transitions, 1090 flow [2024-01-31 17:22:42,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 163 transitions, 1077 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-31 17:22:42,037 INFO L231 Difference]: Finished difference. Result has 89 places, 131 transitions, 770 flow [2024-01-31 17:22:42,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=770, PETRI_PLACES=89, PETRI_TRANSITIONS=131} [2024-01-31 17:22:42,039 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-01-31 17:22:42,039 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 131 transitions, 770 flow [2024-01-31 17:22:42,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 17:22:42,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:42,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:42,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:42,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:42,244 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:22:42,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:42,245 INFO L85 PathProgramCache]: Analyzing trace with hash 420764268, now seen corresponding path program 1 times [2024-01-31 17:22:42,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:22:42,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012746039] [2024-01-31 17:22:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:42,245 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:42,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:22:42,247 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:22:42,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-01-31 17:22:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:42,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 17:22:42,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:22:42,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:22:42,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:22:42,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012746039] [2024-01-31 17:22:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012746039] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:22:42,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:22:42,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:22:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964006235] [2024-01-31 17:22:42,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:22:42,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:22:42,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:22:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:22:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:22:42,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-01-31 17:22:42,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 131 transitions, 770 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 17:22:42,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:42,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-01-31 17:22:42,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:45,967 INFO L124 PetriNetUnfolderBase]: 10970/18243 cut-off events. [2024-01-31 17:22:45,967 INFO L125 PetriNetUnfolderBase]: For 43808/44258 co-relation queries the response was YES. [2024-01-31 17:22:46,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63773 conditions, 18243 events. 10970/18243 cut-off events. For 43808/44258 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 135716 event pairs, 6384 based on Foata normal form. 1062/17667 useless extension candidates. Maximal degree in co-relation 63734. Up to 13348 conditions per place. [2024-01-31 17:22:46,080 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 68 selfloop transitions, 2 changer transitions 34/166 dead transitions. [2024-01-31 17:22:46,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 166 transitions, 1126 flow [2024-01-31 17:22:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:22:46,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:22:46,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-01-31 17:22:46,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-01-31 17:22:46,082 INFO L175 Difference]: Start difference. First operand has 89 places, 131 transitions, 770 flow. Second operand 5 states and 111 transitions. [2024-01-31 17:22:46,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 166 transitions, 1126 flow [2024-01-31 17:22:46,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 166 transitions, 1123 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:22:46,210 INFO L231 Difference]: Finished difference. Result has 94 places, 132 transitions, 804 flow [2024-01-31 17:22:46,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=804, PETRI_PLACES=94, PETRI_TRANSITIONS=132} [2024-01-31 17:22:46,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2024-01-31 17:22:46,211 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 132 transitions, 804 flow [2024-01-31 17:22:46,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 17:22:46,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:46,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:46,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:46,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:46,420 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:22:46,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash 341296292, now seen corresponding path program 1 times [2024-01-31 17:22:46,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:22:46,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145220181] [2024-01-31 17:22:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:46,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:22:46,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:22:46,422 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:22:46,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-01-31 17:22:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:47,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 47 conjunts are in the unsatisfiable core [2024-01-31 17:22:47,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:47,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-01-31 17:22:49,354 INFO L349 Elim1Store]: treesize reduction 1514, result has 22.2 percent of original size [2024-01-31 17:22:49,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 6 disjoint index pairs (out of 120 index pairs), introduced 24 new quantified variables, introduced 120 case distinctions, treesize of input 814 treesize of output 700 [2024-01-31 17:22:49,431 INFO L173 IndexEqualityManager]: detected equality via solver [2024-01-31 17:22:49,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 628 treesize of output 528 [2024-01-31 17:22:49,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 555 treesize of output 435 [2024-01-31 17:23:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:23:01,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:23:02,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:23:02,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 541 treesize of output 490 [2024-01-31 17:24:10,051 WARN L293 SmtUtils]: Spent 1.11m on a formula simplification. DAG size of input: 1710 DAG size of output: 1341 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-01-31 17:24:10,053 INFO L349 Elim1Store]: treesize reduction 1233, result has 82.8 percent of original size [2024-01-31 17:24:10,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 32 select indices, 32 select index equivalence classes, 0 disjoint index pairs (out of 496 index pairs), introduced 40 new quantified variables, introduced 496 case distinctions, treesize of input 1152 treesize of output 6173 Killed by 15