/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 19:33:05,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 19:33:05,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 19:33:05,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 19:33:05,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 19:33:05,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 19:33:05,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 19:33:05,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 19:33:05,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 19:33:05,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 19:33:05,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 19:33:05,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 19:33:05,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 19:33:05,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 19:33:05,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 19:33:05,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 19:33:05,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 19:33:05,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 19:33:05,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 19:33:05,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 19:33:05,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 19:33:05,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 19:33:05,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 19:33:05,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 19:33:05,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 19:33:05,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 19:33:05,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 19:33:05,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 19:33:05,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 19:33:05,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 19:33:05,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 19:33:05,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 19:33:05,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 19:33:05,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 19:33:05,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 19:33:05,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 19:33:05,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 19:33:05,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 19:33:05,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 19:33:05,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 19:33:05,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 19:33:05,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 19:33:06,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 19:33:06,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 19:33:06,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 19:33:06,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 19:33:06,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 19:33:06,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 19:33:06,017 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 19:33:06,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 19:33:06,017 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 19:33:06,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 19:33:06,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 19:33:06,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 19:33:06,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 19:33:06,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 19:33:06,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 19:33:06,018 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 19:33:06,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 19:33:06,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 19:33:06,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 19:33:06,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 19:33:06,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 19:33:06,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 19:33:06,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 19:33:06,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:33:06,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 19:33:06,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 19:33:06,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 19:33:06,019 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 19:33:06,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 19:33:06,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 19:33:06,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 19:33:06,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 19:33:06,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 19:33:06,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 19:33:06,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 19:33:06,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 19:33:06,323 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 19:33:06,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2022-12-11 19:33:07,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 19:33:07,458 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 19:33:07,458 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2022-12-11 19:33:07,463 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd063ccf/984d5d95b93842e692c69c0679d9c3fd/FLAG01936379d [2022-12-11 19:33:07,473 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd063ccf/984d5d95b93842e692c69c0679d9c3fd [2022-12-11 19:33:07,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 19:33:07,476 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 19:33:07,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 19:33:07,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 19:33:07,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 19:33:07,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f23994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07, skipping insertion in model container [2022-12-11 19:33:07,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 19:33:07,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 19:33:07,596 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,613 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-12-11 19:33:07,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:33:07,628 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 19:33:07,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:33:07,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:33:07,644 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-12-11 19:33:07,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:33:07,657 INFO L208 MainTranslator]: Completed translation [2022-12-11 19:33:07,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07 WrapperNode [2022-12-11 19:33:07,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 19:33:07,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 19:33:07,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 19:33:07,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 19:33:07,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,701 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 122 [2022-12-11 19:33:07,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 19:33:07,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 19:33:07,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 19:33:07,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 19:33:07,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,734 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 19:33:07,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 19:33:07,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 19:33:07,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 19:33:07,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (1/1) ... [2022-12-11 19:33:07,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:33:07,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:33:07,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 19:33:07,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 19:33:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 19:33:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 19:33:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 19:33:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 19:33:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 19:33:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 19:33:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 19:33:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 19:33:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 19:33:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 19:33:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 19:33:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 19:33:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 19:33:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 19:33:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 19:33:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 19:33:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 19:33:07,814 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 19:33:07,914 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 19:33:07,922 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 19:33:08,100 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 19:33:08,169 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 19:33:08,169 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-11 19:33:08,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:33:08 BoogieIcfgContainer [2022-12-11 19:33:08,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 19:33:08,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 19:33:08,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 19:33:08,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 19:33:08,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 07:33:07" (1/3) ... [2022-12-11 19:33:08,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e1fe74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:33:08, skipping insertion in model container [2022-12-11 19:33:08,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:33:07" (2/3) ... [2022-12-11 19:33:08,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e1fe74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:33:08, skipping insertion in model container [2022-12-11 19:33:08,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:33:08" (3/3) ... [2022-12-11 19:33:08,176 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2022-12-11 19:33:08,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 19:33:08,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 19:33:08,193 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 19:33:08,276 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-11 19:33:08,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 162 transitions, 348 flow [2022-12-11 19:33:08,354 INFO L130 PetriNetUnfolder]: 12/159 cut-off events. [2022-12-11 19:33:08,354 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:33:08,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 159 events. 12/159 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 130. Up to 2 conditions per place. [2022-12-11 19:33:08,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 162 transitions, 348 flow [2022-12-11 19:33:08,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 149 transitions, 316 flow [2022-12-11 19:33:08,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 19:33:08,373 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=LoopsAndPotentialCycles, 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;@5940df3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 19:33:08,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 19:33:08,398 INFO L130 PetriNetUnfolder]: 12/148 cut-off events. [2022-12-11 19:33:08,398 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:33:08,399 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:33:08,399 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:33:08,400 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)] === [2022-12-11 19:33:08,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:33:08,403 INFO L85 PathProgramCache]: Analyzing trace with hash 676061573, now seen corresponding path program 1 times [2022-12-11 19:33:08,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:33:08,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968038728] [2022-12-11 19:33:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:08,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:33:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:33:09,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:33:09,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968038728] [2022-12-11 19:33:09,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968038728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:33:09,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:33:09,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:33:09,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463627888] [2022-12-11 19:33:09,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:33:09,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:33:09,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:33:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:33:09,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:33:09,144 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 162 [2022-12-11 19:33:09,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 149 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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) [2022-12-11 19:33:09,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:33:09,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 162 [2022-12-11 19:33:09,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:33:09,293 INFO L130 PetriNetUnfolder]: 185/677 cut-off events. [2022-12-11 19:33:09,293 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2022-12-11 19:33:09,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1146 conditions, 677 events. 185/677 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3763 event pairs, 124 based on Foata normal form. 6/613 useless extension candidates. Maximal degree in co-relation 975. Up to 217 conditions per place. [2022-12-11 19:33:09,303 INFO L137 encePairwiseOnDemand]: 148/162 looper letters, 45 selfloop transitions, 5 changer transitions 5/151 dead transitions. [2022-12-11 19:33:09,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 151 transitions, 436 flow [2022-12-11 19:33:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 19:33:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 19:33:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 714 transitions. [2022-12-11 19:33:09,321 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7345679012345679 [2022-12-11 19:33:09,322 INFO L175 Difference]: Start difference. First operand has 147 places, 149 transitions, 316 flow. Second operand 6 states and 714 transitions. [2022-12-11 19:33:09,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 151 transitions, 436 flow [2022-12-11 19:33:09,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 151 transitions, 420 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-11 19:33:09,331 INFO L231 Difference]: Finished difference. Result has 147 places, 137 transitions, 296 flow [2022-12-11 19:33:09,333 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=147, PETRI_TRANSITIONS=137} [2022-12-11 19:33:09,339 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 0 predicate places. [2022-12-11 19:33:09,340 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 137 transitions, 296 flow [2022-12-11 19:33:09,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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) [2022-12-11 19:33:09,341 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:33:09,341 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:33:09,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 19:33:09,342 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)] === [2022-12-11 19:33:09,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:33:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1564707333, now seen corresponding path program 1 times [2022-12-11 19:33:09,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:33:09,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556450870] [2022-12-11 19:33:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:09,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:33:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:33:09,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:33:09,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556450870] [2022-12-11 19:33:09,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556450870] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:33:09,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:33:09,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:33:09,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138561483] [2022-12-11 19:33:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:33:09,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:33:09,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:33:09,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:33:09,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:33:09,541 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 162 [2022-12-11 19:33:09,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 137 transitions, 296 flow. Second operand has 7 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 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) [2022-12-11 19:33:09,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:33:09,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 162 [2022-12-11 19:33:09,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:33:09,731 INFO L130 PetriNetUnfolder]: 234/732 cut-off events. [2022-12-11 19:33:09,731 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-12-11 19:33:09,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 732 events. 234/732 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3815 event pairs, 170 based on Foata normal form. 11/671 useless extension candidates. Maximal degree in co-relation 409. Up to 319 conditions per place. [2022-12-11 19:33:09,737 INFO L137 encePairwiseOnDemand]: 153/162 looper letters, 31 selfloop transitions, 6 changer transitions 16/157 dead transitions. [2022-12-11 19:33:09,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 157 transitions, 450 flow [2022-12-11 19:33:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 19:33:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 19:33:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2022-12-11 19:33:09,739 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7878086419753086 [2022-12-11 19:33:09,739 INFO L175 Difference]: Start difference. First operand has 147 places, 137 transitions, 296 flow. Second operand 8 states and 1021 transitions. [2022-12-11 19:33:09,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 157 transitions, 450 flow [2022-12-11 19:33:09,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 157 transitions, 441 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-11 19:33:09,746 INFO L231 Difference]: Finished difference. Result has 148 places, 138 transitions, 312 flow [2022-12-11 19:33:09,746 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=312, PETRI_PLACES=148, PETRI_TRANSITIONS=138} [2022-12-11 19:33:09,747 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 1 predicate places. [2022-12-11 19:33:09,747 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 138 transitions, 312 flow [2022-12-11 19:33:09,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 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) [2022-12-11 19:33:09,748 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:33:09,748 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:33:09,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 19:33:09,748 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)] === [2022-12-11 19:33:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:33:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash -305533161, now seen corresponding path program 1 times [2022-12-11 19:33:09,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:33:09,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285060137] [2022-12-11 19:33:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:09,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:33:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:33:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:33:09,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285060137] [2022-12-11 19:33:09,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285060137] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:33:09,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197042808] [2022-12-11 19:33:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:09,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:33:09,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:33:09,942 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) [2022-12-11 19:33:09,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 19:33:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:10,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-11 19:33:10,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:33:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:33:10,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:33:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:33:10,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197042808] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-11 19:33:10,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-11 19:33:10,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-12-11 19:33:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253761088] [2022-12-11 19:33:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:33:10,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:33:10,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:33:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:33:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:33:10,349 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 162 [2022-12-11 19:33:10,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 138 transitions, 312 flow. Second operand has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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) [2022-12-11 19:33:10,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:33:10,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 162 [2022-12-11 19:33:10,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:33:10,474 INFO L130 PetriNetUnfolder]: 172/638 cut-off events. [2022-12-11 19:33:10,474 INFO L131 PetriNetUnfolder]: For 71/83 co-relation queries the response was YES. [2022-12-11 19:33:10,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 638 events. 172/638 cut-off events. For 71/83 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3525 event pairs, 81 based on Foata normal form. 12/614 useless extension candidates. Maximal degree in co-relation 1007. Up to 155 conditions per place. [2022-12-11 19:33:10,479 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 34 selfloop transitions, 7 changer transitions 0/146 dead transitions. [2022-12-11 19:33:10,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 146 transitions, 416 flow [2022-12-11 19:33:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:33:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:33:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 888 transitions. [2022-12-11 19:33:10,481 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.783068783068783 [2022-12-11 19:33:10,481 INFO L175 Difference]: Start difference. First operand has 148 places, 138 transitions, 312 flow. Second operand 7 states and 888 transitions. [2022-12-11 19:33:10,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 146 transitions, 416 flow [2022-12-11 19:33:10,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 146 transitions, 400 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-12-11 19:33:10,486 INFO L231 Difference]: Finished difference. Result has 149 places, 140 transitions, 331 flow [2022-12-11 19:33:10,486 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=149, PETRI_TRANSITIONS=140} [2022-12-11 19:33:10,487 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 2 predicate places. [2022-12-11 19:33:10,487 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 140 transitions, 331 flow [2022-12-11 19:33:10,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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) [2022-12-11 19:33:10,488 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:33:10,488 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:33:10,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 19:33:10,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:33:10,696 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)] === [2022-12-11 19:33:10,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:33:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1408335313, now seen corresponding path program 1 times [2022-12-11 19:33:10,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:33:10,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985335751] [2022-12-11 19:33:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:10,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:33:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-11 19:33:10,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:33:10,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985335751] [2022-12-11 19:33:10,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985335751] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:33:10,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:33:10,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 19:33:10,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202529170] [2022-12-11 19:33:10,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:33:10,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 19:33:10,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:33:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 19:33:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 19:33:10,868 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 162 [2022-12-11 19:33:10,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 140 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 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) [2022-12-11 19:33:10,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:33:10,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 162 [2022-12-11 19:33:10,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:33:11,003 INFO L130 PetriNetUnfolder]: 104/465 cut-off events. [2022-12-11 19:33:11,004 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-12-11 19:33:11,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 465 events. 104/465 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1972 event pairs, 63 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 701. Up to 156 conditions per place. [2022-12-11 19:33:11,007 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 48 selfloop transitions, 3 changer transitions 4/150 dead transitions. [2022-12-11 19:33:11,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 150 transitions, 463 flow [2022-12-11 19:33:11,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:33:11,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:33:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2022-12-11 19:33:11,009 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7049382716049383 [2022-12-11 19:33:11,009 INFO L175 Difference]: Start difference. First operand has 149 places, 140 transitions, 331 flow. Second operand 5 states and 571 transitions. [2022-12-11 19:33:11,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 150 transitions, 463 flow [2022-12-11 19:33:11,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 150 transitions, 455 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-11 19:33:11,013 INFO L231 Difference]: Finished difference. Result has 153 places, 142 transitions, 351 flow [2022-12-11 19:33:11,014 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=153, PETRI_TRANSITIONS=142} [2022-12-11 19:33:11,015 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 6 predicate places. [2022-12-11 19:33:11,015 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 142 transitions, 351 flow [2022-12-11 19:33:11,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 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) [2022-12-11 19:33:11,015 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:33:11,016 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:33:11,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 19:33:11,016 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)] === [2022-12-11 19:33:11,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:33:11,016 INFO L85 PathProgramCache]: Analyzing trace with hash 441729572, now seen corresponding path program 1 times [2022-12-11 19:33:11,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:33:11,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036478701] [2022-12-11 19:33:11,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:11,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:33:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:33:11,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:33:11,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036478701] [2022-12-11 19:33:11,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036478701] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:33:11,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928537318] [2022-12-11 19:33:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:11,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:33:11,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:33:11,724 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) [2022-12-11 19:33:11,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 19:33:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:11,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-11 19:33:11,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:33:11,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-12-11 19:33:11,918 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-11 19:33:11,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-11 19:33:12,162 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-11 19:33:12,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-11 19:33:12,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-12-11 19:33:12,455 INFO L350 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 6 treesize of output 5 [2022-12-11 19:33:12,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 19:33:12,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 19:33:12,678 INFO L350 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 15 treesize of output 7 [2022-12-11 19:33:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:33:12,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:33:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:33:12,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928537318] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-11 19:33:12,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-11 19:33:12,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16, 22] total 37 [2022-12-11 19:33:12,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236566630] [2022-12-11 19:33:12,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:33:12,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 19:33:12,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:33:12,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 19:33:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1198, Unknown=0, NotChecked=0, Total=1332 [2022-12-11 19:33:12,985 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 162 [2022-12-11 19:33:12,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 142 transitions, 351 flow. Second operand has 10 states, 10 states have (on average 93.1) internal successors, (931), 10 states have internal predecessors, (931), 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) [2022-12-11 19:33:12,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:33:12,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 162 [2022-12-11 19:33:12,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:33:14,212 INFO L130 PetriNetUnfolder]: 4977/9756 cut-off events. [2022-12-11 19:33:14,213 INFO L131 PetriNetUnfolder]: For 4440/4442 co-relation queries the response was YES. [2022-12-11 19:33:14,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21778 conditions, 9756 events. 4977/9756 cut-off events. For 4440/4442 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 80804 event pairs, 909 based on Foata normal form. 3/9443 useless extension candidates. Maximal degree in co-relation 21677. Up to 1879 conditions per place. [2022-12-11 19:33:14,258 INFO L137 encePairwiseOnDemand]: 150/162 looper letters, 149 selfloop transitions, 11 changer transitions 83/321 dead transitions. [2022-12-11 19:33:14,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 321 transitions, 1396 flow [2022-12-11 19:33:14,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-11 19:33:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-11 19:33:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1530 transitions. [2022-12-11 19:33:14,261 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2022-12-11 19:33:14,261 INFO L175 Difference]: Start difference. First operand has 153 places, 142 transitions, 351 flow. Second operand 15 states and 1530 transitions. [2022-12-11 19:33:14,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 321 transitions, 1396 flow [2022-12-11 19:33:14,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 321 transitions, 1384 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-11 19:33:14,346 INFO L231 Difference]: Finished difference. Result has 176 places, 152 transitions, 455 flow [2022-12-11 19:33:14,347 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=455, PETRI_PLACES=176, PETRI_TRANSITIONS=152} [2022-12-11 19:33:14,347 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 29 predicate places. [2022-12-11 19:33:14,347 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 152 transitions, 455 flow [2022-12-11 19:33:14,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.1) internal successors, (931), 10 states have internal predecessors, (931), 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) [2022-12-11 19:33:14,348 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:33:14,348 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:33:14,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-11 19:33:14,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:33:14,553 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)] === [2022-12-11 19:33:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:33:14,554 INFO L85 PathProgramCache]: Analyzing trace with hash -881246908, now seen corresponding path program 2 times [2022-12-11 19:33:14,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:33:14,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284078443] [2022-12-11 19:33:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:14,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:33:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:33:14,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:33:14,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284078443] [2022-12-11 19:33:14,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284078443] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:33:14,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475782893] [2022-12-11 19:33:14,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 19:33:14,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:33:14,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:33:14,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:33:14,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 19:33:15,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 19:33:15,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:33:15,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-11 19:33:15,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:33:15,299 INFO L350 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 15 treesize of output 7 [2022-12-11 19:33:15,342 INFO L350 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 40 treesize of output 22 [2022-12-11 19:33:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:33:15,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:33:15,444 INFO L350 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 50 treesize of output 26 [2022-12-11 19:33:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:33:15,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475782893] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-11 19:33:15,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-11 19:33:15,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 15] total 23 [2022-12-11 19:33:15,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617651662] [2022-12-11 19:33:15,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:33:15,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 19:33:15,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:33:15,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 19:33:15,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-12-11 19:33:15,549 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 162 [2022-12-11 19:33:15,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 152 transitions, 455 flow. Second operand has 9 states, 9 states have (on average 98.22222222222223) internal successors, (884), 9 states have internal predecessors, (884), 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) [2022-12-11 19:33:15,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:33:15,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 162 [2022-12-11 19:33:15,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:33:16,750 INFO L130 PetriNetUnfolder]: 3506/9533 cut-off events. [2022-12-11 19:33:16,750 INFO L131 PetriNetUnfolder]: For 12679/12938 co-relation queries the response was YES. [2022-12-11 19:33:16,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24669 conditions, 9533 events. 3506/9533 cut-off events. For 12679/12938 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 101184 event pairs, 1099 based on Foata normal form. 152/9219 useless extension candidates. Maximal degree in co-relation 24599. Up to 1742 conditions per place. [2022-12-11 19:33:16,801 INFO L137 encePairwiseOnDemand]: 153/162 looper letters, 109 selfloop transitions, 12 changer transitions 63/269 dead transitions. [2022-12-11 19:33:16,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 269 transitions, 1358 flow [2022-12-11 19:33:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-11 19:33:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-11 19:33:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1256 transitions. [2022-12-11 19:33:16,803 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6460905349794238 [2022-12-11 19:33:16,803 INFO L175 Difference]: Start difference. First operand has 176 places, 152 transitions, 455 flow. Second operand 12 states and 1256 transitions. [2022-12-11 19:33:16,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 269 transitions, 1358 flow [2022-12-11 19:33:16,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 269 transitions, 1284 flow, removed 37 selfloop flow, removed 7 redundant places. [2022-12-11 19:33:16,867 INFO L231 Difference]: Finished difference. Result has 182 places, 160 transitions, 568 flow [2022-12-11 19:33:16,868 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=568, PETRI_PLACES=182, PETRI_TRANSITIONS=160} [2022-12-11 19:33:16,868 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 35 predicate places. [2022-12-11 19:33:16,868 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 160 transitions, 568 flow [2022-12-11 19:33:16,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.22222222222223) internal successors, (884), 9 states have internal predecessors, (884), 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) [2022-12-11 19:33:16,869 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:33:16,869 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:33:16,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-11 19:33:17,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:33:17,074 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)] === [2022-12-11 19:33:17,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:33:17,075 INFO L85 PathProgramCache]: Analyzing trace with hash 339662476, now seen corresponding path program 3 times [2022-12-11 19:33:17,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:33:17,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683436338] [2022-12-11 19:33:17,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:17,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:33:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:33:17,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:33:17,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683436338] [2022-12-11 19:33:17,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683436338] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:33:17,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404618555] [2022-12-11 19:33:17,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 19:33:17,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:33:17,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:33:17,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:33:17,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 19:33:17,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-11 19:33:17,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:33:17,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-11 19:33:17,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:33:17,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-11 19:33:17,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 19:33:17,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404618555] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:33:17,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 19:33:17,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 12 [2022-12-11 19:33:17,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124889648] [2022-12-11 19:33:17,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:33:17,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 19:33:17,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:33:17,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 19:33:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-12-11 19:33:17,721 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 162 [2022-12-11 19:33:17,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 160 transitions, 568 flow. Second operand has 8 states, 8 states have (on average 116.5) internal successors, (932), 8 states have internal predecessors, (932), 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) [2022-12-11 19:33:17,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:33:17,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 162 [2022-12-11 19:33:17,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:33:18,172 INFO L130 PetriNetUnfolder]: 634/3193 cut-off events. [2022-12-11 19:33:18,173 INFO L131 PetriNetUnfolder]: For 5427/5624 co-relation queries the response was YES. [2022-12-11 19:33:18,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7902 conditions, 3193 events. 634/3193 cut-off events. For 5427/5624 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 32576 event pairs, 143 based on Foata normal form. 71/3160 useless extension candidates. Maximal degree in co-relation 7828. Up to 670 conditions per place. [2022-12-11 19:33:18,188 INFO L137 encePairwiseOnDemand]: 150/162 looper letters, 48 selfloop transitions, 12 changer transitions 18/193 dead transitions. [2022-12-11 19:33:18,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 193 transitions, 960 flow [2022-12-11 19:33:18,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 19:33:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 19:33:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1288 transitions. [2022-12-11 19:33:18,191 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7227833894500562 [2022-12-11 19:33:18,191 INFO L175 Difference]: Start difference. First operand has 182 places, 160 transitions, 568 flow. Second operand 11 states and 1288 transitions. [2022-12-11 19:33:18,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 193 transitions, 960 flow [2022-12-11 19:33:18,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 193 transitions, 932 flow, removed 14 selfloop flow, removed 7 redundant places. [2022-12-11 19:33:18,206 INFO L231 Difference]: Finished difference. Result has 181 places, 160 transitions, 584 flow [2022-12-11 19:33:18,207 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=584, PETRI_PLACES=181, PETRI_TRANSITIONS=160} [2022-12-11 19:33:18,207 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 34 predicate places. [2022-12-11 19:33:18,207 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 160 transitions, 584 flow [2022-12-11 19:33:18,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.5) internal successors, (932), 8 states have internal predecessors, (932), 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) [2022-12-11 19:33:18,208 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:33:18,209 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:33:18,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 19:33:18,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:33:18,414 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)] === [2022-12-11 19:33:18,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:33:18,414 INFO L85 PathProgramCache]: Analyzing trace with hash 58628894, now seen corresponding path program 4 times [2022-12-11 19:33:18,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:33:18,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324534450] [2022-12-11 19:33:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:18,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:33:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:33:18,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:33:18,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324534450] [2022-12-11 19:33:18,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324534450] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:33:18,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220106456] [2022-12-11 19:33:18,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 19:33:18,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:33:18,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:33:18,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:33:18,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 19:33:19,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 19:33:19,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:33:19,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-11 19:33:19,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:33:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:33:19,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 19:33:19,539 INFO L350 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 15 treesize of output 7 [2022-12-11 19:33:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:33:19,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:33:22,308 INFO L350 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 18 treesize of output 14 [2022-12-11 19:33:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:33:22,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220106456] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:33:22,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:33:22,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 19] total 43 [2022-12-11 19:33:22,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828225196] [2022-12-11 19:33:22,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:33:22,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-11 19:33:22,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:33:22,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-11 19:33:22,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1604, Unknown=13, NotChecked=0, Total=1806 [2022-12-11 19:33:22,506 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 162 [2022-12-11 19:33:22,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 160 transitions, 584 flow. Second operand has 43 states, 43 states have (on average 68.53488372093024) internal successors, (2947), 43 states have internal predecessors, (2947), 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) [2022-12-11 19:33:22,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:33:22,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 162 [2022-12-11 19:33:22,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:33:22,552 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (= (mod c_~b1~0 256) 0))) (and (or (<= c_~min~0 c_~max~0) .cse0) (or (forall ((v_ArrVal_212 (Array Int Int))) (<= c_~min~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_212) c_~A~0.base) c_~A~0.offset))) .cse0))) is different from false [2022-12-11 19:33:31,308 INFO L130 PetriNetUnfolder]: 30928/61597 cut-off events. [2022-12-11 19:33:31,308 INFO L131 PetriNetUnfolder]: For 118311/119841 co-relation queries the response was YES. [2022-12-11 19:33:31,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175910 conditions, 61597 events. 30928/61597 cut-off events. For 118311/119841 co-relation queries the response was YES. Maximal size of possible extension queue 3350. Compared 699902 event pairs, 3071 based on Foata normal form. 103/61346 useless extension candidates. Maximal degree in co-relation 175776. Up to 6890 conditions per place. [2022-12-11 19:33:31,798 INFO L137 encePairwiseOnDemand]: 138/162 looper letters, 320 selfloop transitions, 47 changer transitions 284/709 dead transitions. [2022-12-11 19:33:31,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 709 transitions, 4590 flow [2022-12-11 19:33:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-11 19:33:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-11 19:33:31,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 3757 transitions. [2022-12-11 19:33:31,804 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.46382716049382716 [2022-12-11 19:33:31,804 INFO L175 Difference]: Start difference. First operand has 181 places, 160 transitions, 584 flow. Second operand 50 states and 3757 transitions. [2022-12-11 19:33:31,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 709 transitions, 4590 flow [2022-12-11 19:33:32,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 709 transitions, 4483 flow, removed 47 selfloop flow, removed 7 redundant places. [2022-12-11 19:33:32,272 INFO L231 Difference]: Finished difference. Result has 253 places, 187 transitions, 967 flow [2022-12-11 19:33:32,272 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=967, PETRI_PLACES=253, PETRI_TRANSITIONS=187} [2022-12-11 19:33:32,273 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 106 predicate places. [2022-12-11 19:33:32,273 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 187 transitions, 967 flow [2022-12-11 19:33:32,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 68.53488372093024) internal successors, (2947), 43 states have internal predecessors, (2947), 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) [2022-12-11 19:33:32,274 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:33:32,274 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:33:32,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 19:33:32,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:33:32,482 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)] === [2022-12-11 19:33:32,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:33:32,483 INFO L85 PathProgramCache]: Analyzing trace with hash -542151682, now seen corresponding path program 5 times [2022-12-11 19:33:32,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:33:32,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694168165] [2022-12-11 19:33:32,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:32,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:33:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-11 19:33:32,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:33:32,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694168165] [2022-12-11 19:33:32,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694168165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:33:32,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:33:32,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-11 19:33:32,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033427516] [2022-12-11 19:33:32,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:33:32,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-11 19:33:32,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:33:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-11 19:33:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-11 19:33:32,836 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 162 [2022-12-11 19:33:32,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 187 transitions, 967 flow. Second operand has 15 states, 15 states have (on average 76.8) internal successors, (1152), 15 states have internal predecessors, (1152), 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) [2022-12-11 19:33:32,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:33:32,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 162 [2022-12-11 19:33:32,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:33:34,978 INFO L130 PetriNetUnfolder]: 3025/11675 cut-off events. [2022-12-11 19:33:34,978 INFO L131 PetriNetUnfolder]: For 131901/133669 co-relation queries the response was YES. [2022-12-11 19:33:35,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47875 conditions, 11675 events. 3025/11675 cut-off events. For 131901/133669 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 141164 event pairs, 611 based on Foata normal form. 376/11573 useless extension candidates. Maximal degree in co-relation 47707. Up to 2298 conditions per place. [2022-12-11 19:33:35,112 INFO L137 encePairwiseOnDemand]: 142/162 looper letters, 125 selfloop transitions, 36 changer transitions 55/299 dead transitions. [2022-12-11 19:33:35,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 299 transitions, 2432 flow [2022-12-11 19:33:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-11 19:33:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-11 19:33:35,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1874 transitions. [2022-12-11 19:33:35,121 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.48199588477366256 [2022-12-11 19:33:35,121 INFO L175 Difference]: Start difference. First operand has 253 places, 187 transitions, 967 flow. Second operand 24 states and 1874 transitions. [2022-12-11 19:33:35,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 299 transitions, 2432 flow [2022-12-11 19:33:35,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 299 transitions, 2121 flow, removed 137 selfloop flow, removed 30 redundant places. [2022-12-11 19:33:35,291 INFO L231 Difference]: Finished difference. Result has 233 places, 203 transitions, 1167 flow [2022-12-11 19:33:35,292 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1167, PETRI_PLACES=233, PETRI_TRANSITIONS=203} [2022-12-11 19:33:35,292 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 86 predicate places. [2022-12-11 19:33:35,292 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 203 transitions, 1167 flow [2022-12-11 19:33:35,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 76.8) internal successors, (1152), 15 states have internal predecessors, (1152), 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) [2022-12-11 19:33:35,293 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:33:35,293 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:33:35,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-11 19:33:35,293 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)] === [2022-12-11 19:33:35,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:33:35,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1652594736, now seen corresponding path program 6 times [2022-12-11 19:33:35,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:33:35,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857257285] [2022-12-11 19:33:35,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:33:35,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:33:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:33:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:33:35,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:33:35,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857257285] [2022-12-11 19:33:35,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857257285] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:33:35,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303873122] [2022-12-11 19:33:35,797 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 19:33:35,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:33:35,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:33:35,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:33:35,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 19:33:35,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-11 19:33:35,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:33:35,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-11 19:33:35,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:33:36,294 INFO L350 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 6 treesize of output 5 [2022-12-11 19:33:36,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:33:36,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 19:33:36,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:33:36,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 19:33:36,461 INFO L350 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 15 treesize of output 7 [2022-12-11 19:33:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:33:36,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:33:57,065 INFO L350 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 1078 treesize of output 950 [2022-12-11 19:33:57,097 INFO L350 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 914 treesize of output 850 [2022-12-11 19:33:57,105 INFO L350 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 850 treesize of output 786 [2022-12-11 19:33:57,115 INFO L350 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 409 treesize of output 377 [2022-12-11 19:33:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:33:57,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303873122] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:33:57,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:33:57,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 19] total 39 [2022-12-11 19:33:57,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419098590] [2022-12-11 19:33:57,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:33:57,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-11 19:33:57,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:33:57,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-11 19:33:57,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1280, Unknown=51, NotChecked=0, Total=1482 [2022-12-11 19:33:57,759 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 162 [2022-12-11 19:33:57,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 203 transitions, 1167 flow. Second operand has 39 states, 39 states have (on average 71.58974358974359) internal successors, (2792), 39 states have internal predecessors, (2792), 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) [2022-12-11 19:33:57,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:33:57,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 162 [2022-12-11 19:33:57,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:34:01,594 INFO L130 PetriNetUnfolder]: 8560/20598 cut-off events. [2022-12-11 19:34:01,594 INFO L131 PetriNetUnfolder]: For 204804/206874 co-relation queries the response was YES. [2022-12-11 19:34:01,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89928 conditions, 20598 events. 8560/20598 cut-off events. For 204804/206874 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 224190 event pairs, 1118 based on Foata normal form. 731/20362 useless extension candidates. Maximal degree in co-relation 89772. Up to 5021 conditions per place. [2022-12-11 19:34:01,777 INFO L137 encePairwiseOnDemand]: 141/162 looper letters, 119 selfloop transitions, 25 changer transitions 142/353 dead transitions. [2022-12-11 19:34:01,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 353 transitions, 2968 flow [2022-12-11 19:34:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 19:34:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 19:34:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2005 transitions. [2022-12-11 19:34:01,783 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4583904892546868 [2022-12-11 19:34:01,783 INFO L175 Difference]: Start difference. First operand has 233 places, 203 transitions, 1167 flow. Second operand 27 states and 2005 transitions. [2022-12-11 19:34:01,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 353 transitions, 2968 flow [2022-12-11 19:34:02,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 353 transitions, 2701 flow, removed 113 selfloop flow, removed 19 redundant places. [2022-12-11 19:34:02,026 INFO L231 Difference]: Finished difference. Result has 244 places, 178 transitions, 942 flow [2022-12-11 19:34:02,027 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=942, PETRI_PLACES=244, PETRI_TRANSITIONS=178} [2022-12-11 19:34:02,028 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 97 predicate places. [2022-12-11 19:34:02,028 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 178 transitions, 942 flow [2022-12-11 19:34:02,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 71.58974358974359) internal successors, (2792), 39 states have internal predecessors, (2792), 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) [2022-12-11 19:34:02,029 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:34:02,029 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:34:02,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-11 19:34:02,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:34:02,235 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)] === [2022-12-11 19:34:02,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:34:02,236 INFO L85 PathProgramCache]: Analyzing trace with hash -569522, now seen corresponding path program 7 times [2022-12-11 19:34:02,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:34:02,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049390683] [2022-12-11 19:34:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:34:02,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:34:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:34:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:34:02,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:34:02,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049390683] [2022-12-11 19:34:02,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049390683] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:34:02,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563009942] [2022-12-11 19:34:02,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-11 19:34:02,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:34:02,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:34:02,615 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:34:02,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 19:34:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:34:02,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-11 19:34:02,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:34:02,930 INFO L350 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 [2022-12-11 19:34:03,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:34:03,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 19:34:03,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:34:03,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 19:34:03,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:34:03,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-12-11 19:34:03,490 INFO L350 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 15 treesize of output 7 [2022-12-11 19:34:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:34:03,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:34:08,003 WARN L837 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_299 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_299))) (let ((.cse0 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_300) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse0) (< .cse0 (select (select .cse1 c_~A~0.base) c_~A~0.offset)))))) (forall ((v_ArrVal_299 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_299))) (let ((.cse3 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) (or (forall ((v_ArrVal_300 (Array Int Int))) (not (< (select (select (store .cse2 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_300) c_~A~0.base) c_~A~0.offset) .cse3))) (<= c_~min~0 .cse3)))))) (= (mod c_~b1~0 256) 0)) is different from false [2022-12-11 19:34:08,104 WARN L837 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_298 (Array Int Int)) (v_ArrVal_299 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_298) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_299))) (let ((.cse0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse0) (forall ((v_ArrVal_300 (Array Int Int))) (not (< (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_300) c_~A~0.base) c_~A~0.offset) .cse0))))))) (forall ((v_ArrVal_298 (Array Int Int)) (v_ArrVal_300 (Array Int Int)) (v_ArrVal_299 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_298) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_299))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_300) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse2) (< .cse2 (select (select .cse3 c_~A~0.base) c_~A~0.offset))))))) (= (mod c_~b1~0 256) 0)) is different from false [2022-12-11 19:34:08,183 WARN L837 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_298 (Array Int Int)) (v_ArrVal_299 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_298) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_299))) (let ((.cse0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse0) (forall ((v_ArrVal_300 (Array Int Int))) (not (< (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_300) c_~A~0.base) c_~A~0.offset) .cse0))))))) (forall ((v_ArrVal_298 (Array Int Int)) (v_ArrVal_300 (Array Int Int)) (v_ArrVal_299 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_298) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_299))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_300) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse2) (< .cse2 (select (select .cse3 c_~A~0.base) c_~A~0.offset))))))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= (mod c_~b1~0 256) 0)) is different from false [2022-12-11 19:34:08,202 WARN L837 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_298 (Array Int Int)) (v_ArrVal_299 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_298) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_299))) (let ((.cse0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse0) (forall ((v_ArrVal_300 (Array Int Int))) (not (< (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_300) c_~A~0.base) c_~A~0.offset) .cse0))))))) (forall ((v_ArrVal_298 (Array Int Int)) (v_ArrVal_300 (Array Int Int)) (v_ArrVal_299 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_298) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_299))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_300) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse2) (< .cse2 (select (select .cse3 c_~A~0.base) c_~A~0.offset))))))) (= (mod c_~b1~0 256) 0) (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) is different from false [2022-12-11 19:34:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:34:08,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563009942] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:34:08,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:34:08,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 25, 14] total 40 [2022-12-11 19:34:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426516378] [2022-12-11 19:34:08,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:34:08,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-11 19:34:08,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:34:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-11 19:34:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1091, Unknown=7, NotChecked=284, Total=1560 [2022-12-11 19:34:08,251 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 162 [2022-12-11 19:34:08,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 178 transitions, 942 flow. Second operand has 40 states, 40 states have (on average 62.6) internal successors, (2504), 40 states have internal predecessors, (2504), 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) [2022-12-11 19:34:08,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:34:08,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 162 [2022-12-11 19:34:08,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:34:13,024 INFO L130 PetriNetUnfolder]: 4577/13899 cut-off events. [2022-12-11 19:34:13,025 INFO L131 PetriNetUnfolder]: For 123524/124436 co-relation queries the response was YES. [2022-12-11 19:34:13,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51412 conditions, 13899 events. 4577/13899 cut-off events. For 123524/124436 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 160698 event pairs, 846 based on Foata normal form. 186/13616 useless extension candidates. Maximal degree in co-relation 51363. Up to 3553 conditions per place. [2022-12-11 19:34:13,083 INFO L137 encePairwiseOnDemand]: 132/162 looper letters, 88 selfloop transitions, 26 changer transitions 179/346 dead transitions. [2022-12-11 19:34:13,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 346 transitions, 2936 flow [2022-12-11 19:34:13,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-11 19:34:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-11 19:34:13,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2291 transitions. [2022-12-11 19:34:13,086 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3928326474622771 [2022-12-11 19:34:13,086 INFO L175 Difference]: Start difference. First operand has 244 places, 178 transitions, 942 flow. Second operand 36 states and 2291 transitions. [2022-12-11 19:34:13,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 346 transitions, 2936 flow [2022-12-11 19:34:13,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 346 transitions, 2602 flow, removed 61 selfloop flow, removed 35 redundant places. [2022-12-11 19:34:13,284 INFO L231 Difference]: Finished difference. Result has 241 places, 143 transitions, 548 flow [2022-12-11 19:34:13,284 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=548, PETRI_PLACES=241, PETRI_TRANSITIONS=143} [2022-12-11 19:34:13,284 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 94 predicate places. [2022-12-11 19:34:13,284 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 143 transitions, 548 flow [2022-12-11 19:34:13,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 62.6) internal successors, (2504), 40 states have internal predecessors, (2504), 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) [2022-12-11 19:34:13,285 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:34:13,286 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:34:13,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-11 19:34:13,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:34:13,492 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)] === [2022-12-11 19:34:13,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:34:13,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1701883806, now seen corresponding path program 8 times [2022-12-11 19:34:13,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:34:13,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364275948] [2022-12-11 19:34:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:34:13,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:34:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:34:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:34:13,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:34:13,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364275948] [2022-12-11 19:34:13,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364275948] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:34:13,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698946095] [2022-12-11 19:34:13,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 19:34:13,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:34:13,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:34:13,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:34:13,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-11 19:34:13,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 19:34:13,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:34:13,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-11 19:34:13,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:34:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:34:13,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:34:13,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:34:13,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698946095] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:34:13,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:34:13,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2022-12-11 19:34:13,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825998280] [2022-12-11 19:34:13,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:34:13,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 19:34:13,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:34:13,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 19:34:13,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-12-11 19:34:13,944 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 162 [2022-12-11 19:34:13,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 143 transitions, 548 flow. Second operand has 21 states, 21 states have (on average 119.14285714285714) internal successors, (2502), 21 states have internal predecessors, (2502), 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) [2022-12-11 19:34:13,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:34:13,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 162 [2022-12-11 19:34:13,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:34:14,832 INFO L130 PetriNetUnfolder]: 458/1089 cut-off events. [2022-12-11 19:34:14,833 INFO L131 PetriNetUnfolder]: For 7002/7144 co-relation queries the response was YES. [2022-12-11 19:34:14,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 1089 events. 458/1089 cut-off events. For 7002/7144 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4546 event pairs, 57 based on Foata normal form. 22/1063 useless extension candidates. Maximal degree in co-relation 4113. Up to 153 conditions per place. [2022-12-11 19:34:14,840 INFO L137 encePairwiseOnDemand]: 141/162 looper letters, 98 selfloop transitions, 53 changer transitions 18/266 dead transitions. [2022-12-11 19:34:14,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 266 transitions, 1497 flow [2022-12-11 19:34:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-11 19:34:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-11 19:34:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4427 transitions. [2022-12-11 19:34:14,845 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7385719052385719 [2022-12-11 19:34:14,846 INFO L175 Difference]: Start difference. First operand has 241 places, 143 transitions, 548 flow. Second operand 37 states and 4427 transitions. [2022-12-11 19:34:14,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 266 transitions, 1497 flow [2022-12-11 19:34:14,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 266 transitions, 1262 flow, removed 75 selfloop flow, removed 46 redundant places. [2022-12-11 19:34:14,854 INFO L231 Difference]: Finished difference. Result has 222 places, 182 transitions, 747 flow [2022-12-11 19:34:14,855 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=747, PETRI_PLACES=222, PETRI_TRANSITIONS=182} [2022-12-11 19:34:14,856 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 75 predicate places. [2022-12-11 19:34:14,856 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 182 transitions, 747 flow [2022-12-11 19:34:14,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 119.14285714285714) internal successors, (2502), 21 states have internal predecessors, (2502), 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) [2022-12-11 19:34:14,857 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:34:14,857 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:34:14,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-11 19:34:15,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-11 19:34:15,063 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)] === [2022-12-11 19:34:15,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:34:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1013926188, now seen corresponding path program 9 times [2022-12-11 19:34:15,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:34:15,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290507590] [2022-12-11 19:34:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:34:15,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:34:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:34:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-11 19:34:15,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:34:15,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290507590] [2022-12-11 19:34:15,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290507590] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:34:15,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051328341] [2022-12-11 19:34:15,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 19:34:15,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:34:15,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:34:15,872 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:34:15,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-11 19:34:16,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-11 19:34:16,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:34:16,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-11 19:34:16,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:34:16,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:34:16,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 19:34:16,784 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:34:16,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 33 [2022-12-11 19:34:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 19:34:16,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:34:17,863 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse27 (* c_thread2Thread1of1ForFork2_~i~1 4))) (let ((.cse4 (+ c_~A~0.offset 4)) (.cse2 (+ c_~A~0.offset 4 .cse27)) (.cse3 (+ c_~A~0.offset .cse27))) (and (forall ((v_ArrVal_369 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_369) c_~A~0.base))) (let ((.cse0 (select .cse1 .cse4))) (or (<= .cse0 c_~max~0) (not (< (select .cse1 .cse2) c_~max~0)) (not (< (select .cse1 .cse3) c_~max~0)) (< (select .cse1 c_~A~0.offset) .cse0))))) (forall ((v_ArrVal_369 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_369) c_~A~0.base))) (let ((.cse5 (select .cse6 c_~A~0.offset)) (.cse7 (select .cse6 .cse2)) (.cse8 (select .cse6 .cse3))) (or (not (< .cse5 (select .cse6 .cse4))) (<= .cse5 .cse7) (< .cse7 .cse8) (< .cse8 c_~max~0))))) (forall ((v_ArrVal_369 (Array Int Int))) (let ((.cse11 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_369) c_~A~0.base))) (let ((.cse10 (select .cse11 .cse2)) (.cse9 (select .cse11 .cse4))) (or (<= .cse9 .cse10) (< .cse10 c_~max~0) (not (< (select .cse11 .cse3) c_~max~0)) (< (select .cse11 c_~A~0.offset) .cse9))))) (forall ((v_ArrVal_369 (Array Int Int))) (let ((.cse13 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_369) c_~A~0.base))) (let ((.cse12 (select .cse13 c_~A~0.offset)) (.cse14 (select .cse13 .cse2))) (or (not (< .cse12 (select .cse13 .cse4))) (<= .cse12 .cse14) (< .cse14 c_~max~0) (not (< (select .cse13 .cse3) c_~max~0)))))) (forall ((v_ArrVal_369 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_369) c_~A~0.base))) (let ((.cse16 (select .cse18 .cse2)) (.cse17 (select .cse18 .cse3)) (.cse15 (select .cse18 .cse4))) (or (<= .cse15 .cse16) (< .cse16 .cse17) (< .cse17 c_~max~0) (< (select .cse18 c_~A~0.offset) .cse15))))) (forall ((v_ArrVal_369 (Array Int Int))) (let ((.cse21 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_369) c_~A~0.base))) (let ((.cse20 (select .cse21 .cse3)) (.cse19 (select .cse21 .cse4))) (or (<= .cse19 .cse20) (< .cse20 c_~max~0) (not (< (select .cse21 .cse2) .cse20)) (< (select .cse21 c_~A~0.offset) .cse19))))) (forall ((v_ArrVal_369 (Array Int Int))) (let ((.cse23 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_369) c_~A~0.base))) (let ((.cse22 (select .cse23 c_~A~0.offset))) (or (not (< .cse22 (select .cse23 .cse4))) (<= .cse22 c_~max~0) (not (< (select .cse23 .cse2) c_~max~0)) (not (< (select .cse23 .cse3) c_~max~0)))))) (forall ((v_ArrVal_369 (Array Int Int))) (let ((.cse25 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_369) c_~A~0.base))) (let ((.cse24 (select .cse25 c_~A~0.offset)) (.cse26 (select .cse25 .cse3))) (or (not (< .cse24 (select .cse25 .cse4))) (< .cse26 c_~max~0) (<= .cse24 .cse26) (not (< (select .cse25 .cse2) .cse26))))))))) is different from false [2022-12-11 19:34:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 19:34:18,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051328341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:34:18,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:34:18,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22, 17] total 43 [2022-12-11 19:34:18,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443832514] [2022-12-11 19:34:18,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:34:18,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-11 19:34:18,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:34:18,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-11 19:34:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1488, Unknown=1, NotChecked=80, Total=1806 [2022-12-11 19:34:18,207 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 162 [2022-12-11 19:34:18,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 182 transitions, 747 flow. Second operand has 43 states, 43 states have (on average 74.86046511627907) internal successors, (3219), 43 states have internal predecessors, (3219), 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) [2022-12-11 19:34:18,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:34:18,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 162 [2022-12-11 19:34:18,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:34:20,270 INFO L130 PetriNetUnfolder]: 2094/3947 cut-off events. [2022-12-11 19:34:20,271 INFO L131 PetriNetUnfolder]: For 25530/25531 co-relation queries the response was YES. [2022-12-11 19:34:20,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17373 conditions, 3947 events. 2094/3947 cut-off events. For 25530/25531 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 24050 event pairs, 0 based on Foata normal form. 3/3949 useless extension candidates. Maximal degree in co-relation 17336. Up to 862 conditions per place. [2022-12-11 19:34:20,289 INFO L137 encePairwiseOnDemand]: 138/162 looper letters, 0 selfloop transitions, 0 changer transitions 443/443 dead transitions. [2022-12-11 19:34:20,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 443 transitions, 3267 flow [2022-12-11 19:34:20,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-11 19:34:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-11 19:34:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2721 transitions. [2022-12-11 19:34:20,292 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4798941798941799 [2022-12-11 19:34:20,292 INFO L175 Difference]: Start difference. First operand has 222 places, 182 transitions, 747 flow. Second operand 35 states and 2721 transitions. [2022-12-11 19:34:20,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 443 transitions, 3267 flow [2022-12-11 19:34:20,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 443 transitions, 3144 flow, removed 42 selfloop flow, removed 8 redundant places. [2022-12-11 19:34:20,312 INFO L231 Difference]: Finished difference. Result has 239 places, 0 transitions, 0 flow [2022-12-11 19:34:20,313 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=0, PETRI_PLACES=239, PETRI_TRANSITIONS=0} [2022-12-11 19:34:20,313 INFO L295 CegarLoopForPetriNet]: 147 programPoint places, 92 predicate places. [2022-12-11 19:34:20,313 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 0 transitions, 0 flow [2022-12-11 19:34:20,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 74.86046511627907) internal successors, (3219), 43 states have internal predecessors, (3219), 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) [2022-12-11 19:34:20,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-11 19:34:20,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-11 19:34:20,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-11 19:34:20,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-11 19:34:20,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-11 19:34:20,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-11 19:34:20,522 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1] [2022-12-11 19:34:20,524 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 19:34:20,524 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 19:34:20,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 07:34:20 BasicIcfg [2022-12-11 19:34:20,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 19:34:20,529 INFO L158 Benchmark]: Toolchain (without parser) took 73053.19ms. Allocated memory was 223.3MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 199.5MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2022-12-11 19:34:20,529 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 223.3MB. Free memory was 199.5MB in the beginning and 199.5MB in the end (delta: 88.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 19:34:20,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.59ms. Allocated memory is still 223.3MB. Free memory was 199.5MB in the beginning and 185.9MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-11 19:34:20,530 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.96ms. Allocated memory is still 223.3MB. Free memory was 185.9MB in the beginning and 183.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 19:34:20,530 INFO L158 Benchmark]: Boogie Preprocessor took 33.73ms. Allocated memory is still 223.3MB. Free memory was 183.8MB in the beginning and 182.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 19:34:20,531 INFO L158 Benchmark]: RCFGBuilder took 433.82ms. Allocated memory is still 223.3MB. Free memory was 182.2MB in the beginning and 160.7MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-12-11 19:34:20,535 INFO L158 Benchmark]: TraceAbstraction took 72356.00ms. Allocated memory was 223.3MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 159.2MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2022-12-11 19:34:20,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 223.3MB. Free memory was 199.5MB in the beginning and 199.5MB in the end (delta: 88.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 180.59ms. Allocated memory is still 223.3MB. Free memory was 199.5MB in the beginning and 185.9MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.96ms. Allocated memory is still 223.3MB. Free memory was 185.9MB in the beginning and 183.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.73ms. Allocated memory is still 223.3MB. Free memory was 183.8MB in the beginning and 182.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 433.82ms. Allocated memory is still 223.3MB. Free memory was 182.2MB in the beginning and 160.7MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 72356.00ms. Allocated memory was 223.3MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 159.2MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 180 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 72.2s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 28.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4820 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4820 mSDsluCounter, 6432 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 709 IncrementalHoareTripleChecker+Unchecked, 5797 mSDsCounter, 301 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7287 IncrementalHoareTripleChecker+Invalid, 8297 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 301 mSolverCounterUnsat, 635 mSDtfsCounter, 7287 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2700 GetRequests, 2185 SyntacticMatches, 14 SemanticMatches, 501 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 6320 ImplicationChecksByTransitivity, 36.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1167occurred in iteration=9, InterpolantAutomatonStates: 273, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 39.8s InterpolantComputationTime, 2965 NumberOfCodeBlocks, 2942 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 4030 ConstructedInterpolants, 53 QuantifiedInterpolants, 27363 SizeOfPredicates, 176 NumberOfNonLiveVariables, 2780 ConjunctsInSsa, 256 ConjunctsInUnsatCore, 30 InterpolantComputations, 8 PerfectInterpolantSequences, 90/160 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 19:34:20,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...