/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/popl20-min-max-inc-dec.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 19:18:44,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 19:18:44,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 19:18:44,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 19:18:44,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 19:18:44,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 19:18:44,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 19:18:44,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 19:18:44,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 19:18:44,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 19:18:44,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 19:18:44,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 19:18:44,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 19:18:44,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 19:18:44,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 19:18:44,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 19:18:44,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 19:18:44,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 19:18:44,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 19:18:44,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 19:18:44,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 19:18:44,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 19:18:44,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 19:18:44,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 19:18:44,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 19:18:44,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 19:18:44,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 19:18:44,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 19:18:44,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 19:18:44,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 19:18:44,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 19:18:44,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 19:18:44,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 19:18:44,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 19:18:44,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 19:18:44,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 19:18:44,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 19:18:44,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 19:18:44,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 19:18:44,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 19:18:44,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 19:18:44,970 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 [2022-12-05 19:18:45,005 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 19:18:45,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 19:18:45,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 19:18:45,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 19:18:45,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 19:18:45,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 19:18:45,008 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 19:18:45,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 19:18:45,008 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 19:18:45,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 19:18:45,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 19:18:45,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 19:18:45,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 19:18:45,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 19:18:45,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 19:18:45,010 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 19:18:45,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 19:18:45,010 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 19:18:45,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 19:18:45,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 19:18:45,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 19:18:45,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 19:18:45,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 19:18:45,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:18:45,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 19:18:45,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 19:18:45,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 19:18:45,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 19:18:45,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 19:18:45,011 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 19:18:45,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 19:18:45,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 19:18:45,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 19:18:45,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 19:18:45,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 19:18:45,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 19:18:45,352 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 19:18:45,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2022-12-05 19:18:46,374 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 19:18:46,578 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 19:18:46,578 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2022-12-05 19:18:46,584 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c87604f4/90724131d74d4ba99b739cde7402fe1f/FLAGa084a5d3c [2022-12-05 19:18:46,599 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c87604f4/90724131d74d4ba99b739cde7402fe1f [2022-12-05 19:18:46,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 19:18:46,602 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 19:18:46,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 19:18:46,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 19:18:46,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 19:18:46,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:46,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0fc905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46, skipping insertion in model container [2022-12-05 19:18:46,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:46,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 19:18:46,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 19:18:46,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,828 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/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-12-05 19:18:46,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:18:46,854 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 19:18:46,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:18:46,894 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:18:46,898 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/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-12-05 19:18:46,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:18:46,913 INFO L208 MainTranslator]: Completed translation [2022-12-05 19:18:46,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46 WrapperNode [2022-12-05 19:18:46,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 19:18:46,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 19:18:46,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 19:18:46,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 19:18:46,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:46,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:46,973 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 174 [2022-12-05 19:18:46,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 19:18:46,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 19:18:46,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 19:18:46,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 19:18:46,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:46,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:46,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:46,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:47,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:47,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:47,014 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:47,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:47,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 19:18:47,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 19:18:47,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 19:18:47,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 19:18:47,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (1/1) ... [2022-12-05 19:18:47,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:18:47,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:18:47,061 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) [2022-12-05 19:18:47,084 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 [2022-12-05 19:18:47,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 19:18:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 19:18:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 19:18:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 19:18:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 19:18:47,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 19:18:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 19:18:47,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 19:18:47,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 19:18:47,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 19:18:47,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-05 19:18:47,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-05 19:18:47,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 19:18:47,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-05 19:18:47,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-05 19:18:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 19:18:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 19:18:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 19:18:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 19:18:47,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 19:18:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 19:18:47,109 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 19:18:47,216 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 19:18:47,218 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 19:18:47,517 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 19:18:47,666 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 19:18:47,666 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-05 19:18:47,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:18:47 BoogieIcfgContainer [2022-12-05 19:18:47,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 19:18:47,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 19:18:47,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 19:18:47,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 19:18:47,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 07:18:46" (1/3) ... [2022-12-05 19:18:47,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93c360c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:18:47, skipping insertion in model container [2022-12-05 19:18:47,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:18:46" (2/3) ... [2022-12-05 19:18:47,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93c360c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:18:47, skipping insertion in model container [2022-12-05 19:18:47,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:18:47" (3/3) ... [2022-12-05 19:18:47,675 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2022-12-05 19:18:47,690 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 19:18:47,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 19:18:47,690 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 19:18:47,795 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-05 19:18:47,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 183 transitions, 406 flow [2022-12-05 19:18:47,918 INFO L130 PetriNetUnfolder]: 14/178 cut-off events. [2022-12-05 19:18:47,918 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-05 19:18:47,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 178 events. 14/178 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2022-12-05 19:18:47,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 183 transitions, 406 flow [2022-12-05 19:18:47,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 164 transitions, 358 flow [2022-12-05 19:18:47,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 19:18:47,951 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;@1583fec2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 19:18:47,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-05 19:18:47,989 INFO L130 PetriNetUnfolder]: 14/163 cut-off events. [2022-12-05 19:18:47,989 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-05 19:18:47,990 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:18:47,990 INFO L213 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] [2022-12-05 19:18:47,991 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 3 more)] === [2022-12-05 19:18:47,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:18:47,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1601163290, now seen corresponding path program 1 times [2022-12-05 19:18:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:18:48,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423215825] [2022-12-05 19:18:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:18:48,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:18:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:18:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:18:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:18:48,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423215825] [2022-12-05 19:18:48,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423215825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:18:48,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:18:48,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:18:48,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588536812] [2022-12-05 19:18:48,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:18:48,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:18:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:18:48,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:18:48,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:18:48,896 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-12-05 19:18:48,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 358 flow. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2022-12-05 19:18:48,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:18:48,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-12-05 19:18:48,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:18:51,074 INFO L130 PetriNetUnfolder]: 7778/13879 cut-off events. [2022-12-05 19:18:51,074 INFO L131 PetriNetUnfolder]: For 1887/1887 co-relation queries the response was YES. [2022-12-05 19:18:51,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26543 conditions, 13879 events. 7778/13879 cut-off events. For 1887/1887 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 118960 event pairs, 3679 based on Foata normal form. 5/11398 useless extension candidates. Maximal degree in co-relation 26099. Up to 6273 conditions per place. [2022-12-05 19:18:51,209 INFO L137 encePairwiseOnDemand]: 168/183 looper letters, 60 selfloop transitions, 5 changer transitions 4/174 dead transitions. [2022-12-05 19:18:51,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 174 transitions, 528 flow [2022-12-05 19:18:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 19:18:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 19:18:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 821 transitions. [2022-12-05 19:18:51,228 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7477231329690346 [2022-12-05 19:18:51,229 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 358 flow. Second operand 6 states and 821 transitions. [2022-12-05 19:18:51,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 174 transitions, 528 flow [2022-12-05 19:18:51,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 174 transitions, 500 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-12-05 19:18:51,276 INFO L231 Difference]: Finished difference. Result has 162 places, 152 transitions, 330 flow [2022-12-05 19:18:51,278 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=162, PETRI_TRANSITIONS=152} [2022-12-05 19:18:51,285 INFO L294 CegarLoopForPetriNet]: 166 programPoint places, -4 predicate places. [2022-12-05 19:18:51,285 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 152 transitions, 330 flow [2022-12-05 19:18:51,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2022-12-05 19:18:51,286 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:18:51,286 INFO L213 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] [2022-12-05 19:18:51,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 19:18:51,287 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 3 more)] === [2022-12-05 19:18:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:18:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1915271968, now seen corresponding path program 1 times [2022-12-05 19:18:51,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:18:51,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336949637] [2022-12-05 19:18:51,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:18:51,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:18:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:18:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:18:51,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:18:51,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336949637] [2022-12-05 19:18:51,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336949637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:18:51,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:18:51,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 19:18:51,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187285890] [2022-12-05 19:18:51,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:18:51,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 19:18:51,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:18:51,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 19:18:51,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-05 19:18:51,515 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 183 [2022-12-05 19:18:51,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 152 transitions, 330 flow. Second operand has 7 states, 7 states have (on average 135.57142857142858) internal successors, (949), 7 states have internal predecessors, (949), 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) [2022-12-05 19:18:51,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:18:51,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 183 [2022-12-05 19:18:51,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:18:53,385 INFO L130 PetriNetUnfolder]: 9402/15005 cut-off events. [2022-12-05 19:18:53,386 INFO L131 PetriNetUnfolder]: For 1874/1874 co-relation queries the response was YES. [2022-12-05 19:18:53,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30129 conditions, 15005 events. 9402/15005 cut-off events. For 1874/1874 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 114744 event pairs, 7029 based on Foata normal form. 225/12332 useless extension candidates. Maximal degree in co-relation 10838. Up to 10130 conditions per place. [2022-12-05 19:18:53,477 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 41 selfloop transitions, 6 changer transitions 36/192 dead transitions. [2022-12-05 19:18:53,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 192 transitions, 591 flow [2022-12-05 19:18:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 19:18:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 19:18:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1131 transitions. [2022-12-05 19:18:53,481 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7725409836065574 [2022-12-05 19:18:53,481 INFO L175 Difference]: Start difference. First operand has 162 places, 152 transitions, 330 flow. Second operand 8 states and 1131 transitions. [2022-12-05 19:18:53,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 192 transitions, 591 flow [2022-12-05 19:18:53,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 192 transitions, 582 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 19:18:53,488 INFO L231 Difference]: Finished difference. Result has 164 places, 153 transitions, 346 flow [2022-12-05 19:18:53,489 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=164, PETRI_TRANSITIONS=153} [2022-12-05 19:18:53,489 INFO L294 CegarLoopForPetriNet]: 166 programPoint places, -2 predicate places. [2022-12-05 19:18:53,490 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 153 transitions, 346 flow [2022-12-05 19:18:53,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.57142857142858) internal successors, (949), 7 states have internal predecessors, (949), 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) [2022-12-05 19:18:53,490 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:18:53,491 INFO L213 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, 1] [2022-12-05 19:18:53,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 19:18:53,491 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 3 more)] === [2022-12-05 19:18:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:18:53,492 INFO L85 PathProgramCache]: Analyzing trace with hash -338618467, now seen corresponding path program 1 times [2022-12-05 19:18:53,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:18:53,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810220592] [2022-12-05 19:18:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:18:53,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:18:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:18:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:18:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:18:53,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810220592] [2022-12-05 19:18:53,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810220592] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:18:53,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42426878] [2022-12-05 19:18:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:18:53,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:18:53,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:18:53,745 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) [2022-12-05 19:18:53,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 19:18:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:18:53,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-05 19:18:53,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:18:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:18:54,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:18:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:18:54,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42426878] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 19:18:54,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 19:18:54,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-12-05 19:18:54,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801090117] [2022-12-05 19:18:54,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:18:54,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 19:18:54,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:18:54,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 19:18:54,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-05 19:18:54,260 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 183 [2022-12-05 19:18:54,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 153 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 135.85714285714286) internal successors, (951), 7 states have internal predecessors, (951), 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) [2022-12-05 19:18:54,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:18:54,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 183 [2022-12-05 19:18:54,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:18:55,782 INFO L130 PetriNetUnfolder]: 7854/13523 cut-off events. [2022-12-05 19:18:55,782 INFO L131 PetriNetUnfolder]: For 1202/1534 co-relation queries the response was YES. [2022-12-05 19:18:55,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26198 conditions, 13523 events. 7854/13523 cut-off events. For 1202/1534 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 107777 event pairs, 5557 based on Foata normal form. 332/11639 useless extension candidates. Maximal degree in co-relation 26119. Up to 4879 conditions per place. [2022-12-05 19:18:55,866 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 52 selfloop transitions, 7 changer transitions 0/169 dead transitions. [2022-12-05 19:18:55,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 169 transitions, 504 flow [2022-12-05 19:18:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:18:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:18:55,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 976 transitions. [2022-12-05 19:18:55,869 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-12-05 19:18:55,869 INFO L175 Difference]: Start difference. First operand has 164 places, 153 transitions, 346 flow. Second operand 7 states and 976 transitions. [2022-12-05 19:18:55,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 169 transitions, 504 flow [2022-12-05 19:18:55,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 169 transitions, 488 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-12-05 19:18:55,877 INFO L231 Difference]: Finished difference. Result has 165 places, 155 transitions, 365 flow [2022-12-05 19:18:55,877 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=365, PETRI_PLACES=165, PETRI_TRANSITIONS=155} [2022-12-05 19:18:55,878 INFO L294 CegarLoopForPetriNet]: 166 programPoint places, -1 predicate places. [2022-12-05 19:18:55,878 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 155 transitions, 365 flow [2022-12-05 19:18:55,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.85714285714286) internal successors, (951), 7 states have internal predecessors, (951), 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) [2022-12-05 19:18:55,879 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:18:55,879 INFO L213 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, 1, 1, 1, 1, 1, 1] [2022-12-05 19:18:55,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 19:18:56,085 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 [2022-12-05 19:18:56,086 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 3 more)] === [2022-12-05 19:18:56,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:18:56,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1254184907, now seen corresponding path program 1 times [2022-12-05 19:18:56,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:18:56,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068210402] [2022-12-05 19:18:56,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:18:56,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:18:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:18:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:18:56,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:18:56,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068210402] [2022-12-05 19:18:56,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068210402] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:18:56,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892826315] [2022-12-05 19:18:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:18:56,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:18:56,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:18:56,300 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) [2022-12-05 19:18:56,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 19:18:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:18:56,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-05 19:18:56,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:18:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:18:56,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:18:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:18:56,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892826315] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 19:18:56,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 19:18:56,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-12-05 19:18:56,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909300574] [2022-12-05 19:18:56,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:18:56,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 19:18:56,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:18:56,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 19:18:56,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-05 19:18:56,681 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 183 [2022-12-05 19:18:56,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 155 transitions, 365 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 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) [2022-12-05 19:18:56,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:18:56,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 183 [2022-12-05 19:18:56,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:18:58,210 INFO L130 PetriNetUnfolder]: 8476/14427 cut-off events. [2022-12-05 19:18:58,210 INFO L131 PetriNetUnfolder]: For 2714/4254 co-relation queries the response was YES. [2022-12-05 19:18:58,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28913 conditions, 14427 events. 8476/14427 cut-off events. For 2714/4254 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 112278 event pairs, 4850 based on Foata normal form. 1540/13970 useless extension candidates. Maximal degree in co-relation 28830. Up to 5453 conditions per place. [2022-12-05 19:18:58,305 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 54 selfloop transitions, 7 changer transitions 0/171 dead transitions. [2022-12-05 19:18:58,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 171 transitions, 533 flow [2022-12-05 19:18:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:18:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:18:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 976 transitions. [2022-12-05 19:18:58,308 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-12-05 19:18:58,308 INFO L175 Difference]: Start difference. First operand has 165 places, 155 transitions, 365 flow. Second operand 7 states and 976 transitions. [2022-12-05 19:18:58,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 171 transitions, 533 flow [2022-12-05 19:18:58,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 171 transitions, 524 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 19:18:58,313 INFO L231 Difference]: Finished difference. Result has 169 places, 156 transitions, 384 flow [2022-12-05 19:18:58,313 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=169, PETRI_TRANSITIONS=156} [2022-12-05 19:18:58,314 INFO L294 CegarLoopForPetriNet]: 166 programPoint places, 3 predicate places. [2022-12-05 19:18:58,314 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 156 transitions, 384 flow [2022-12-05 19:18:58,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 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) [2022-12-05 19:18:58,315 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:18:58,315 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:18:58,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-05 19:18:58,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-05 19:18:58,521 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 3 more)] === [2022-12-05 19:18:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:18:58,522 INFO L85 PathProgramCache]: Analyzing trace with hash 42683607, now seen corresponding path program 1 times [2022-12-05 19:18:58,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:18:58,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054332520] [2022-12-05 19:18:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:18:58,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:18:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:18:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:18:58,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:18:58,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054332520] [2022-12-05 19:18:58,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054332520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:18:58,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090475847] [2022-12-05 19:18:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:18:58,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:18:58,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:18:58,760 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) [2022-12-05 19:18:58,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 19:18:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:18:58,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-05 19:18:58,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:18:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:18:59,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:18:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:18:59,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090475847] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 19:18:59,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 19:18:59,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 7] total 14 [2022-12-05 19:18:59,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409760523] [2022-12-05 19:18:59,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:18:59,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 19:18:59,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:18:59,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 19:18:59,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-12-05 19:18:59,208 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 183 [2022-12-05 19:18:59,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 156 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 136.42857142857142) internal successors, (955), 7 states have internal predecessors, (955), 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) [2022-12-05 19:18:59,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:18:59,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 183 [2022-12-05 19:18:59,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:19:00,610 INFO L130 PetriNetUnfolder]: 8648/15492 cut-off events. [2022-12-05 19:19:00,611 INFO L131 PetriNetUnfolder]: For 5953/8957 co-relation queries the response was YES. [2022-12-05 19:19:00,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32385 conditions, 15492 events. 8648/15492 cut-off events. For 5953/8957 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 128234 event pairs, 4061 based on Foata normal form. 3004/17656 useless extension candidates. Maximal degree in co-relation 32298. Up to 6489 conditions per place. [2022-12-05 19:19:00,804 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 57 selfloop transitions, 7 changer transitions 0/174 dead transitions. [2022-12-05 19:19:00,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 174 transitions, 569 flow [2022-12-05 19:19:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:19:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:19:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 977 transitions. [2022-12-05 19:19:00,806 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7626854020296643 [2022-12-05 19:19:00,807 INFO L175 Difference]: Start difference. First operand has 169 places, 156 transitions, 384 flow. Second operand 7 states and 977 transitions. [2022-12-05 19:19:00,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 174 transitions, 569 flow [2022-12-05 19:19:00,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 174 transitions, 558 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-05 19:19:00,813 INFO L231 Difference]: Finished difference. Result has 172 places, 157 transitions, 401 flow [2022-12-05 19:19:00,813 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=172, PETRI_TRANSITIONS=157} [2022-12-05 19:19:00,814 INFO L294 CegarLoopForPetriNet]: 166 programPoint places, 6 predicate places. [2022-12-05 19:19:00,814 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 157 transitions, 401 flow [2022-12-05 19:19:00,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.42857142857142) internal successors, (955), 7 states have internal predecessors, (955), 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) [2022-12-05 19:19:00,815 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:19:00,815 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:19:00,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 19:19:01,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:19:01,020 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 3 more)] === [2022-12-05 19:19:01,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:19:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1643092511, now seen corresponding path program 1 times [2022-12-05 19:19:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:19:01,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128226690] [2022-12-05 19:19:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:19:01,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:19:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:19:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:19:01,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:19:01,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128226690] [2022-12-05 19:19:01,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128226690] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:19:01,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266523981] [2022-12-05 19:19:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:19:01,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:19:01,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:19:01,952 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) [2022-12-05 19:19:01,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 19:19:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:19:02,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-05 19:19:02,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:19:02,124 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 [2022-12-05 19:19:02,160 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-05 19:19:02,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-12-05 19:19:02,204 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-05 19:19:02,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-12-05 19:19:02,338 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-05 19:19:02,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-12-05 19:19:02,627 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-05 19:19:02,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-05 19:19:02,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-12-05 19:19:02,960 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 [2022-12-05 19:19:03,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-12-05 19:19:03,101 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 [2022-12-05 19:19:03,483 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 [2022-12-05 19:19:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:19:03,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:19:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:19:04,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266523981] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 19:19:04,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 19:19:04,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 25] total 36 [2022-12-05 19:19:04,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166179280] [2022-12-05 19:19:04,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:19:04,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-05 19:19:04,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:19:04,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-05 19:19:04,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2022-12-05 19:19:04,137 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 183 [2022-12-05 19:19:04,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 157 transitions, 401 flow. Second operand has 10 states, 10 states have (on average 114.1) internal successors, (1141), 10 states have internal predecessors, (1141), 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) [2022-12-05 19:19:04,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:19:04,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 183 [2022-12-05 19:19:04,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:19:13,349 INFO L130 PetriNetUnfolder]: 45787/81866 cut-off events. [2022-12-05 19:19:13,350 INFO L131 PetriNetUnfolder]: For 29836/29836 co-relation queries the response was YES. [2022-12-05 19:19:13,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169897 conditions, 81866 events. 45787/81866 cut-off events. For 29836/29836 co-relation queries the response was YES. Maximal size of possible extension queue 3270. Compared 817150 event pairs, 9097 based on Foata normal form. 2/79539 useless extension candidates. Maximal degree in co-relation 169803. Up to 16029 conditions per place. [2022-12-05 19:19:14,069 INFO L137 encePairwiseOnDemand]: 167/183 looper letters, 242 selfloop transitions, 37 changer transitions 27/400 dead transitions. [2022-12-05 19:19:14,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 400 transitions, 1735 flow [2022-12-05 19:19:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-05 19:19:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-05 19:19:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1912 transitions. [2022-12-05 19:19:14,074 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6965391621129327 [2022-12-05 19:19:14,075 INFO L175 Difference]: Start difference. First operand has 172 places, 157 transitions, 401 flow. Second operand 15 states and 1912 transitions. [2022-12-05 19:19:14,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 400 transitions, 1735 flow [2022-12-05 19:19:14,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 400 transitions, 1725 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-05 19:19:14,385 INFO L231 Difference]: Finished difference. Result has 195 places, 197 transitions, 691 flow [2022-12-05 19:19:14,386 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=691, PETRI_PLACES=195, PETRI_TRANSITIONS=197} [2022-12-05 19:19:14,386 INFO L294 CegarLoopForPetriNet]: 166 programPoint places, 29 predicate places. [2022-12-05 19:19:14,386 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 197 transitions, 691 flow [2022-12-05 19:19:14,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 114.1) internal successors, (1141), 10 states have internal predecessors, (1141), 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) [2022-12-05 19:19:14,387 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:19:14,387 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:19:14,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 19:19:14,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:19:14,594 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 3 more)] === [2022-12-05 19:19:14,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:19:14,594 INFO L85 PathProgramCache]: Analyzing trace with hash -9022917, now seen corresponding path program 2 times [2022-12-05 19:19:14,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:19:14,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951944037] [2022-12-05 19:19:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:19:14,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:19:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:19:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:19:15,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:19:15,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951944037] [2022-12-05 19:19:15,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951944037] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:19:15,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477510308] [2022-12-05 19:19:15,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 19:19:15,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:19:15,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:19:15,772 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) [2022-12-05 19:19:15,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 19:19:15,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 19:19:15,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:19:15,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-05 19:19:15,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:19:16,235 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 [2022-12-05 19:19:16,391 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 [2022-12-05 19:19:16,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:19:16,575 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 [2022-12-05 19:19:16,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:19:16,636 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 [2022-12-05 19:19:16,736 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 [2022-12-05 19:19:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:19:16,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:19:17,201 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_329 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_329) c_~A~0.base) c_~A~0.offset))) (or (<= 2147483647 .cse0) (<= c_~min~0 (+ .cse0 1))))) is different from false [2022-12-05 19:19:25,646 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_328 (Array Int Int)) (v_ArrVal_327 (Array Int Int)) (v_ArrVal_329 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_327))) (let ((.cse0 (select (select (store (store .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_328) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_329) |c_ULTIMATE.start_main_#t~ret20#1.base|) |c_ULTIMATE.start_main_#t~ret20#1.offset|))) (or (<= 2147483647 .cse0) (<= (select (select .cse1 |c_ULTIMATE.start_main_#t~ret20#1.base|) |c_ULTIMATE.start_main_#t~ret20#1.offset|) (+ .cse0 1)))))) is different from false [2022-12-05 19:19:25,657 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_328 (Array Int Int)) (v_ArrVal_327 (Array Int Int)) (v_ArrVal_329 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_327))) (let ((.cse1 (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_328) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_329) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))) (or (<= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (+ .cse1 1)) (<= 2147483647 .cse1))))) is different from false [2022-12-05 19:19:25,668 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_328 (Array Int Int)) (v_ArrVal_327 (Array Int Int)) (v_ArrVal_329 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_327))) (let ((.cse1 (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_328) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_329) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ .cse1 1)) (<= 2147483647 .cse1))))) is different from false [2022-12-05 19:19:25,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:19:25,730 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 54 [2022-12-05 19:19:25,741 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 401 treesize of output 365 [2022-12-05 19:19:25,773 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 356 treesize of output 344 [2022-12-05 19:19:25,784 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 293 treesize of output 275 [2022-12-05 19:19:25,791 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 326 treesize of output 302 [2022-12-05 19:19:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 1 not checked. [2022-12-05 19:19:27,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477510308] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:19:27,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:19:27,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 50 [2022-12-05 19:19:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218506559] [2022-12-05 19:19:27,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:19:27,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-05 19:19:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:19:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-05 19:19:27,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1806, Unknown=64, NotChecked=364, Total=2450 [2022-12-05 19:19:27,864 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 183 [2022-12-05 19:19:27,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 197 transitions, 691 flow. Second operand has 50 states, 50 states have (on average 86.32) internal successors, (4316), 50 states have internal predecessors, (4316), 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) [2022-12-05 19:19:27,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:19:27,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 183 [2022-12-05 19:19:27,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand