/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 15:36:05,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 15:36:05,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 15:36:05,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 15:36:05,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 15:36:05,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 15:36:05,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 15:36:05,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 15:36:05,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 15:36:05,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 15:36:05,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 15:36:05,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 15:36:05,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 15:36:05,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 15:36:05,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 15:36:05,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 15:36:05,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 15:36:05,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 15:36:05,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 15:36:05,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 15:36:05,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 15:36:05,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 15:36:05,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 15:36:05,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 15:36:05,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 15:36:05,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 15:36:05,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 15:36:05,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 15:36:05,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 15:36:05,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 15:36:05,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 15:36:05,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 15:36:05,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 15:36:05,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 15:36:05,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 15:36:05,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 15:36:05,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 15:36:05,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 15:36:05,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 15:36:05,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 15:36:05,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 15:36:05,817 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-SemanticLbe.epf [2022-12-12 15:36:05,842 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 15:36:05,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 15:36:05,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 15:36:05,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 15:36:05,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 15:36:05,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 15:36:05,844 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 15:36:05,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 15:36:05,845 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 15:36:05,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 15:36:05,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 15:36:05,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 15:36:05,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 15:36:05,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 15:36:05,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 15:36:05,846 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 15:36:05,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 15:36:05,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 15:36:05,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 15:36:05,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 15:36:05,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 15:36:05,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 15:36:05,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 15:36:05,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:36:05,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 15:36:05,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 15:36:05,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 15:36:05,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 15:36:05,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 15:36:05,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 15:36:05,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 15:36:06,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 15:36:06,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 15:36:06,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 15:36:06,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 15:36:06,173 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 15:36:06,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2022-12-12 15:36:07,586 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 15:36:07,761 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 15:36:07,762 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2022-12-12 15:36:07,776 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dcf78354/70016c138333459ca92e6d167c56e45c/FLAG542b94dfc [2022-12-12 15:36:07,792 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dcf78354/70016c138333459ca92e6d167c56e45c [2022-12-12 15:36:07,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 15:36:07,807 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 15:36:07,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 15:36:07,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 15:36:07,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 15:36:07,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:36:07" (1/1) ... [2022-12-12 15:36:07,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df43798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:07, skipping insertion in model container [2022-12-12 15:36:07,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:36:07" (1/1) ... [2022-12-12 15:36:07,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 15:36:07,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 15:36:08,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,067 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2022-12-12 15:36:08,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:36:08,081 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 15:36:08,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,094 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,094 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,094 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,094 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:36:08,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:36:08,100 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2022-12-12 15:36:08,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:36:08,113 INFO L208 MainTranslator]: Completed translation [2022-12-12 15:36:08,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08 WrapperNode [2022-12-12 15:36:08,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 15:36:08,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 15:36:08,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 15:36:08,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 15:36:08,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (1/1) ... [2022-12-12 15:36:08,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (1/1) ... [2022-12-12 15:36:08,161 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-12-12 15:36:08,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 15:36:08,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 15:36:08,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 15:36:08,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 15:36:08,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (1/1) ... [2022-12-12 15:36:08,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (1/1) ... [2022-12-12 15:36:08,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (1/1) ... [2022-12-12 15:36:08,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (1/1) ... [2022-12-12 15:36:08,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (1/1) ... [2022-12-12 15:36:08,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (1/1) ... [2022-12-12 15:36:08,188 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (1/1) ... [2022-12-12 15:36:08,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (1/1) ... [2022-12-12 15:36:08,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 15:36:08,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 15:36:08,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 15:36:08,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 15:36:08,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (1/1) ... [2022-12-12 15:36:08,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:36:08,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:36:08,220 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) [2022-12-12 15:36:08,272 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 [2022-12-12 15:36:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 15:36:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 15:36:08,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 15:36:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 15:36:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 15:36:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 15:36:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 15:36:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 15:36:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 15:36:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 15:36:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 15:36:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 15:36:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 15:36:08,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 15:36:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 15:36:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 15:36:08,295 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 15:36:08,408 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 15:36:08,411 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 15:36:08,598 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 15:36:08,614 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 15:36:08,614 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 15:36:08,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:36:08 BoogieIcfgContainer [2022-12-12 15:36:08,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 15:36:08,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 15:36:08,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 15:36:08,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 15:36:08,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 03:36:07" (1/3) ... [2022-12-12 15:36:08,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a4584d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:36:08, skipping insertion in model container [2022-12-12 15:36:08,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:36:08" (2/3) ... [2022-12-12 15:36:08,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a4584d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:36:08, skipping insertion in model container [2022-12-12 15:36:08,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:36:08" (3/3) ... [2022-12-12 15:36:08,623 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2022-12-12 15:36:08,636 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 15:36:08,636 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 15:36:08,636 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 15:36:08,729 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 15:36:08,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 124 transitions, 272 flow [2022-12-12 15:36:08,831 INFO L130 PetriNetUnfolder]: 16/121 cut-off events. [2022-12-12 15:36:08,841 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:36:08,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 16/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2022-12-12 15:36:08,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 124 transitions, 272 flow [2022-12-12 15:36:08,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 111 transitions, 240 flow [2022-12-12 15:36:08,850 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 15:36:08,863 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 111 transitions, 240 flow [2022-12-12 15:36:08,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 111 transitions, 240 flow [2022-12-12 15:36:08,900 INFO L130 PetriNetUnfolder]: 16/111 cut-off events. [2022-12-12 15:36:08,900 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:36:08,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 111 events. 16/111 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2022-12-12 15:36:08,904 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 111 transitions, 240 flow [2022-12-12 15:36:08,904 INFO L226 LiptonReduction]: Number of co-enabled transitions 2958 [2022-12-12 15:36:13,068 INFO L241 LiptonReduction]: Total number of compositions: 89 [2022-12-12 15:36:13,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 15:36:13,081 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;@40fcbb7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 15:36:13,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 15:36:13,086 INFO L130 PetriNetUnfolder]: 3/18 cut-off events. [2022-12-12 15:36:13,086 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:36:13,086 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:36:13,089 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:36:13,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:36:13,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:36:13,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1291747388, now seen corresponding path program 1 times [2022-12-12 15:36:13,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:36:13,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229428243] [2022-12-12 15:36:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:13,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:36:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:36:13,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:36:13,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229428243] [2022-12-12 15:36:13,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229428243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:36:13,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:36:13,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 15:36:13,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760569305] [2022-12-12 15:36:13,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:36:13,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 15:36:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:36:13,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 15:36:13,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 15:36:13,422 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:36:13,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-12-12 15:36:13,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:36:13,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:36:13,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:36:13,517 INFO L130 PetriNetUnfolder]: 111/168 cut-off events. [2022-12-12 15:36:13,518 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-12 15:36:13,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 168 events. 111/168 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 336 event pairs, 17 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 244. Up to 105 conditions per place. [2022-12-12 15:36:13,521 INFO L137 encePairwiseOnDemand]: 16/19 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2022-12-12 15:36:13,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 140 flow [2022-12-12 15:36:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 15:36:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 15:36:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2022-12-12 15:36:13,530 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2022-12-12 15:36:13,532 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 56 flow. Second operand 3 states and 30 transitions. [2022-12-12 15:36:13,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 140 flow [2022-12-12 15:36:13,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-12 15:36:13,539 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2022-12-12 15:36:13,540 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2022-12-12 15:36:13,546 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2022-12-12 15:36:13,546 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2022-12-12 15:36:13,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-12-12 15:36:13,547 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:36:13,547 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:36:13,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 15:36:13,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:36:13,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:36:13,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1393409920, now seen corresponding path program 1 times [2022-12-12 15:36:13,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:36:13,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188380858] [2022-12-12 15:36:13,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:13,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:36:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:36:13,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:36:13,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188380858] [2022-12-12 15:36:13,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188380858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:36:13,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:36:13,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 15:36:13,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40221538] [2022-12-12 15:36:13,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:36:13,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 15:36:13,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:36:13,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 15:36:13,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 15:36:13,718 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:36:13,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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) [2022-12-12 15:36:13,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:36:13,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:36:13,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:36:13,768 INFO L130 PetriNetUnfolder]: 151/226 cut-off events. [2022-12-12 15:36:13,768 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-12-12 15:36:13,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 226 events. 151/226 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 542 event pairs, 11 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 188. Up to 185 conditions per place. [2022-12-12 15:36:13,770 INFO L137 encePairwiseOnDemand]: 16/19 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2022-12-12 15:36:13,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 31 transitions, 149 flow [2022-12-12 15:36:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 15:36:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 15:36:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2022-12-12 15:36:13,773 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2022-12-12 15:36:13,774 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 3 states and 30 transitions. [2022-12-12 15:36:13,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 31 transitions, 149 flow [2022-12-12 15:36:13,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 15:36:13,774 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 66 flow [2022-12-12 15:36:13,775 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2022-12-12 15:36:13,775 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2022-12-12 15:36:13,775 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 66 flow [2022-12-12 15:36:13,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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) [2022-12-12 15:36:13,775 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:36:13,775 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:36:13,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 15:36:13,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:36:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:36:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash -506728048, now seen corresponding path program 1 times [2022-12-12 15:36:13,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:36:13,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092064168] [2022-12-12 15:36:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:13,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:36:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:36:13,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:36:13,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092064168] [2022-12-12 15:36:13,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092064168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:36:13,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:36:13,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 15:36:13,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448181365] [2022-12-12 15:36:13,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:36:13,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 15:36:13,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:36:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 15:36:13,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 15:36:13,880 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:36:13,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-12-12 15:36:13,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:36:13,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:36:13,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:36:13,948 INFO L130 PetriNetUnfolder]: 220/325 cut-off events. [2022-12-12 15:36:13,948 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-12-12 15:36:13,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 325 events. 220/325 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 877 event pairs, 28 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 586. Up to 243 conditions per place. [2022-12-12 15:36:13,953 INFO L137 encePairwiseOnDemand]: 16/19 looper letters, 31 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2022-12-12 15:36:13,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 171 flow [2022-12-12 15:36:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 15:36:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 15:36:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2022-12-12 15:36:13,955 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2022-12-12 15:36:13,955 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 66 flow. Second operand 3 states and 30 transitions. [2022-12-12 15:36:13,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 171 flow [2022-12-12 15:36:13,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 15:36:13,957 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 76 flow [2022-12-12 15:36:13,957 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2022-12-12 15:36:13,958 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2022-12-12 15:36:13,958 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 76 flow [2022-12-12 15:36:13,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-12-12 15:36:13,958 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:36:13,958 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:36:13,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 15:36:13,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:36:13,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:36:13,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1812541563, now seen corresponding path program 1 times [2022-12-12 15:36:13,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:36:13,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299548670] [2022-12-12 15:36:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:13,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:36:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:36:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:36:14,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299548670] [2022-12-12 15:36:14,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299548670] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:36:14,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807568080] [2022-12-12 15:36:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:14,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:36:14,209 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) [2022-12-12 15:36:14,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 15:36:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:14,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 15:36:14,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:36:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:36:14,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:36:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:36:14,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807568080] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:36:14,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:36:14,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2022-12-12 15:36:14,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592555497] [2022-12-12 15:36:14,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:36:14,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:36:14,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:36:14,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:36:14,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:36:14,895 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:36:14,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 76 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:36:14,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:36:14,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:36:14,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:36:15,273 INFO L130 PetriNetUnfolder]: 319/470 cut-off events. [2022-12-12 15:36:15,273 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2022-12-12 15:36:15,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 470 events. 319/470 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1386 event pairs, 12 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 500. Up to 145 conditions per place. [2022-12-12 15:36:15,276 INFO L137 encePairwiseOnDemand]: 14/19 looper letters, 67 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2022-12-12 15:36:15,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 78 transitions, 418 flow [2022-12-12 15:36:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 15:36:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 15:36:15,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 70 transitions. [2022-12-12 15:36:15,277 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2022-12-12 15:36:15,277 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 76 flow. Second operand 8 states and 70 transitions. [2022-12-12 15:36:15,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 78 transitions, 418 flow [2022-12-12 15:36:15,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 78 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 15:36:15,279 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 149 flow [2022-12-12 15:36:15,279 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2022-12-12 15:36:15,279 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2022-12-12 15:36:15,279 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 149 flow [2022-12-12 15:36:15,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:36:15,280 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:36:15,280 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:36:15,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 15:36:15,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:15,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:36:15,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:36:15,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2102831478, now seen corresponding path program 2 times [2022-12-12 15:36:15,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:36:15,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521564444] [2022-12-12 15:36:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:36:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:36:15,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:36:15,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521564444] [2022-12-12 15:36:15,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521564444] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:36:15,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981065679] [2022-12-12 15:36:15,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 15:36:15,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:15,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:36:15,853 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) [2022-12-12 15:36:15,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 15:36:16,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 15:36:16,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:36:16,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 15:36:16,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:36:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:36:16,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:36:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:36:16,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981065679] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:36:16,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:36:16,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-12 15:36:16,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752748736] [2022-12-12 15:36:16,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:36:16,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:36:16,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:36:16,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:36:16,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:36:16,198 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:36:16,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-12-12 15:36:16,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:36:16,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:36:16,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:36:16,300 INFO L130 PetriNetUnfolder]: 397/582 cut-off events. [2022-12-12 15:36:16,300 INFO L131 PetriNetUnfolder]: For 654/654 co-relation queries the response was YES. [2022-12-12 15:36:16,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2019 conditions, 582 events. 397/582 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1723 event pairs, 67 based on Foata normal form. 34/532 useless extension candidates. Maximal degree in co-relation 800. Up to 177 conditions per place. [2022-12-12 15:36:16,303 INFO L137 encePairwiseOnDemand]: 16/19 looper letters, 59 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2022-12-12 15:36:16,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 66 transitions, 434 flow [2022-12-12 15:36:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:36:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:36:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2022-12-12 15:36:16,305 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2022-12-12 15:36:16,306 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 149 flow. Second operand 5 states and 49 transitions. [2022-12-12 15:36:16,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 66 transitions, 434 flow [2022-12-12 15:36:16,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 66 transitions, 376 flow, removed 24 selfloop flow, removed 2 redundant places. [2022-12-12 15:36:16,310 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 146 flow [2022-12-12 15:36:16,310 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2022-12-12 15:36:16,313 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2022-12-12 15:36:16,314 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 146 flow [2022-12-12 15:36:16,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-12-12 15:36:16,314 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:36:16,314 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:36:16,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 15:36:16,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:16,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:36:16,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:36:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1912901894, now seen corresponding path program 3 times [2022-12-12 15:36:16,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:36:16,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359687864] [2022-12-12 15:36:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:16,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:36:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 15:36:16,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:36:16,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359687864] [2022-12-12 15:36:16,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359687864] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:36:16,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893646777] [2022-12-12 15:36:16,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 15:36:16,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:16,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:36:16,781 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) [2022-12-12 15:36:16,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 15:36:16,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 15:36:16,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:36:16,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 15:36:16,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:36:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 15:36:16,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:36:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 15:36:17,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893646777] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:36:17,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:36:17,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 8 [2022-12-12 15:36:17,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946072098] [2022-12-12 15:36:17,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:36:17,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:36:17,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:36:17,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:36:17,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:36:17,133 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:36:17,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 146 flow. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 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) [2022-12-12 15:36:17,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:36:17,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:36:17,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:36:17,289 INFO L130 PetriNetUnfolder]: 503/734 cut-off events. [2022-12-12 15:36:17,289 INFO L131 PetriNetUnfolder]: For 823/823 co-relation queries the response was YES. [2022-12-12 15:36:17,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 734 events. 503/734 cut-off events. For 823/823 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2316 event pairs, 45 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 914. Up to 343 conditions per place. [2022-12-12 15:36:17,293 INFO L137 encePairwiseOnDemand]: 14/19 looper letters, 85 selfloop transitions, 20 changer transitions 0/105 dead transitions. [2022-12-12 15:36:17,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 105 transitions, 686 flow [2022-12-12 15:36:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:36:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:36:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 69 transitions. [2022-12-12 15:36:17,297 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2022-12-12 15:36:17,297 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 146 flow. Second operand 9 states and 69 transitions. [2022-12-12 15:36:17,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 105 transitions, 686 flow [2022-12-12 15:36:17,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 105 transitions, 667 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-12 15:36:17,300 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 323 flow [2022-12-12 15:36:17,301 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=323, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2022-12-12 15:36:17,302 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2022-12-12 15:36:17,302 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 323 flow [2022-12-12 15:36:17,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 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) [2022-12-12 15:36:17,303 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:36:17,303 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:36:17,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 15:36:17,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:17,507 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:36:17,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:36:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash 463043056, now seen corresponding path program 4 times [2022-12-12 15:36:17,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:36:17,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484656135] [2022-12-12 15:36:17,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:17,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:36:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:36:18,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:36:18,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484656135] [2022-12-12 15:36:18,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484656135] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:36:18,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137123852] [2022-12-12 15:36:18,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 15:36:18,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:18,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:36:18,155 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) [2022-12-12 15:36:18,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 15:36:18,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 15:36:18,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:36:18,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-12 15:36:18,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:36:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:36:18,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:36:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:36:19,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137123852] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:36:19,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:36:19,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 20 [2022-12-12 15:36:19,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404465427] [2022-12-12 15:36:19,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:36:19,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 15:36:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:36:19,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 15:36:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-12-12 15:36:19,065 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:36:19,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 323 flow. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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) [2022-12-12 15:36:19,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:36:19,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:36:19,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:36:20,809 INFO L130 PetriNetUnfolder]: 2837/4024 cut-off events. [2022-12-12 15:36:20,809 INFO L131 PetriNetUnfolder]: For 10296/10296 co-relation queries the response was YES. [2022-12-12 15:36:20,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15711 conditions, 4024 events. 2837/4024 cut-off events. For 10296/10296 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17799 event pairs, 28 based on Foata normal form. 16/3696 useless extension candidates. Maximal degree in co-relation 6528. Up to 1051 conditions per place. [2022-12-12 15:36:20,832 INFO L137 encePairwiseOnDemand]: 12/19 looper letters, 224 selfloop transitions, 244 changer transitions 6/474 dead transitions. [2022-12-12 15:36:20,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 474 transitions, 3686 flow [2022-12-12 15:36:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 15:36:20,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 15:36:20,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 313 transitions. [2022-12-12 15:36:20,834 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5491228070175439 [2022-12-12 15:36:20,834 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 323 flow. Second operand 30 states and 313 transitions. [2022-12-12 15:36:20,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 474 transitions, 3686 flow [2022-12-12 15:36:20,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 474 transitions, 3601 flow, removed 35 selfloop flow, removed 1 redundant places. [2022-12-12 15:36:20,862 INFO L231 Difference]: Finished difference. Result has 87 places, 283 transitions, 2778 flow [2022-12-12 15:36:20,862 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2778, PETRI_PLACES=87, PETRI_TRANSITIONS=283} [2022-12-12 15:36:20,862 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2022-12-12 15:36:20,863 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 283 transitions, 2778 flow [2022-12-12 15:36:20,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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) [2022-12-12 15:36:20,863 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:36:20,863 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:36:20,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 15:36:21,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:21,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:36:21,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:36:21,068 INFO L85 PathProgramCache]: Analyzing trace with hash -218849892, now seen corresponding path program 5 times [2022-12-12 15:36:21,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:36:21,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166383535] [2022-12-12 15:36:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:21,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:36:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:36:21,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:36:21,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166383535] [2022-12-12 15:36:21,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166383535] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:36:21,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493462494] [2022-12-12 15:36:21,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 15:36:21,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:21,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:36:21,632 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) [2022-12-12 15:36:21,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 15:36:21,713 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 15:36:21,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:36:21,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-12 15:36:21,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:36:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:36:21,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:36:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:36:22,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493462494] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:36:22,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:36:22,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 17 [2022-12-12 15:36:22,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548180567] [2022-12-12 15:36:22,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:36:22,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 15:36:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:36:22,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 15:36:22,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-12-12 15:36:22,490 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:36:22,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 283 transitions, 2778 flow. Second operand has 19 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 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) [2022-12-12 15:36:22,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:36:22,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:36:22,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:36:24,623 INFO L130 PetriNetUnfolder]: 4807/6876 cut-off events. [2022-12-12 15:36:24,623 INFO L131 PetriNetUnfolder]: For 37581/37581 co-relation queries the response was YES. [2022-12-12 15:36:24,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33762 conditions, 6876 events. 4807/6876 cut-off events. For 37581/37581 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 33846 event pairs, 77 based on Foata normal form. 62/6938 useless extension candidates. Maximal degree in co-relation 33165. Up to 2659 conditions per place. [2022-12-12 15:36:24,666 INFO L137 encePairwiseOnDemand]: 12/19 looper letters, 271 selfloop transitions, 526 changer transitions 28/825 dead transitions. [2022-12-12 15:36:24,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 825 transitions, 8830 flow [2022-12-12 15:36:24,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 15:36:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 15:36:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 317 transitions. [2022-12-12 15:36:24,668 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4766917293233083 [2022-12-12 15:36:24,668 INFO L175 Difference]: Start difference. First operand has 87 places, 283 transitions, 2778 flow. Second operand 35 states and 317 transitions. [2022-12-12 15:36:24,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 825 transitions, 8830 flow [2022-12-12 15:36:24,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 825 transitions, 8373 flow, removed 225 selfloop flow, removed 1 redundant places. [2022-12-12 15:36:24,963 INFO L231 Difference]: Finished difference. Result has 125 places, 639 transitions, 7592 flow [2022-12-12 15:36:24,963 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7592, PETRI_PLACES=125, PETRI_TRANSITIONS=639} [2022-12-12 15:36:24,964 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 99 predicate places. [2022-12-12 15:36:24,965 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 639 transitions, 7592 flow [2022-12-12 15:36:24,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 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) [2022-12-12 15:36:24,965 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:36:24,965 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:36:24,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-12 15:36:25,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:25,169 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:36:25,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:36:25,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1665677688, now seen corresponding path program 6 times [2022-12-12 15:36:25,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:36:25,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119676923] [2022-12-12 15:36:25,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:25,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:36:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:36:25,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:36:25,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119676923] [2022-12-12 15:36:25,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119676923] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:36:25,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874108342] [2022-12-12 15:36:25,696 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 15:36:25,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:25,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:36:25,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:36:25,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 15:36:25,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-12 15:36:25,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:36:25,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-12 15:36:25,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:36:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:36:25,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:36:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:36:26,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874108342] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:36:26,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:36:26,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 20 [2022-12-12 15:36:26,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823235713] [2022-12-12 15:36:26,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:36:26,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 15:36:26,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:36:26,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 15:36:26,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-12-12 15:36:26,556 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:36:26,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 639 transitions, 7592 flow. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 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) [2022-12-12 15:36:26,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:36:26,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:36:26,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:36:32,059 INFO L130 PetriNetUnfolder]: 13306/18933 cut-off events. [2022-12-12 15:36:32,059 INFO L131 PetriNetUnfolder]: For 109355/109355 co-relation queries the response was YES. [2022-12-12 15:36:32,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103371 conditions, 18933 events. 13306/18933 cut-off events. For 109355/109355 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 108188 event pairs, 63 based on Foata normal form. 166/19099 useless extension candidates. Maximal degree in co-relation 102647. Up to 5441 conditions per place. [2022-12-12 15:36:32,313 INFO L137 encePairwiseOnDemand]: 11/19 looper letters, 623 selfloop transitions, 1715 changer transitions 41/2379 dead transitions. [2022-12-12 15:36:32,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 2379 transitions, 30116 flow [2022-12-12 15:36:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-12 15:36:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-12-12 15:36:32,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 609 transitions. [2022-12-12 15:36:32,319 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5254529767040552 [2022-12-12 15:36:32,319 INFO L175 Difference]: Start difference. First operand has 125 places, 639 transitions, 7592 flow. Second operand 61 states and 609 transitions. [2022-12-12 15:36:32,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 2379 transitions, 30116 flow [2022-12-12 15:36:33,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 2379 transitions, 28148 flow, removed 969 selfloop flow, removed 3 redundant places. [2022-12-12 15:36:33,370 INFO L231 Difference]: Finished difference. Result has 218 places, 1955 transitions, 27727 flow [2022-12-12 15:36:33,371 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=6720, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=552, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=27727, PETRI_PLACES=218, PETRI_TRANSITIONS=1955} [2022-12-12 15:36:33,371 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 192 predicate places. [2022-12-12 15:36:33,371 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 1955 transitions, 27727 flow [2022-12-12 15:36:33,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 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) [2022-12-12 15:36:33,372 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:36:33,372 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:36:33,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 15:36:33,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:33,580 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:36:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:36:33,580 INFO L85 PathProgramCache]: Analyzing trace with hash -381525074, now seen corresponding path program 7 times [2022-12-12 15:36:33,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:36:33,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608094134] [2022-12-12 15:36:33,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:33,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:36:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:36:34,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:36:34,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608094134] [2022-12-12 15:36:34,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608094134] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:36:34,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017185303] [2022-12-12 15:36:34,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 15:36:34,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:34,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:36:34,372 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:36:34,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 15:36:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:34,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-12 15:36:34,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:36:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:36:34,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:36:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:36:35,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017185303] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:36:35,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:36:35,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 20 [2022-12-12 15:36:35,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749111275] [2022-12-12 15:36:35,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:36:35,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 15:36:35,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:36:35,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 15:36:35,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-12-12 15:36:35,082 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:36:35,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 1955 transitions, 27727 flow. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 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) [2022-12-12 15:36:35,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:36:35,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:36:35,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:36:43,437 INFO L130 PetriNetUnfolder]: 17507/24929 cut-off events. [2022-12-12 15:36:43,437 INFO L131 PetriNetUnfolder]: For 339252/339252 co-relation queries the response was YES. [2022-12-12 15:36:43,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181838 conditions, 24929 events. 17507/24929 cut-off events. For 339252/339252 co-relation queries the response was YES. Maximal size of possible extension queue 1064. Compared 148314 event pairs, 475 based on Foata normal form. 5/24934 useless extension candidates. Maximal degree in co-relation 179983. Up to 12238 conditions per place. [2022-12-12 15:36:43,862 INFO L137 encePairwiseOnDemand]: 12/19 looper letters, 995 selfloop transitions, 2040 changer transitions 22/3057 dead transitions. [2022-12-12 15:36:43,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 3057 transitions, 47397 flow [2022-12-12 15:36:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 15:36:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 15:36:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 338 transitions. [2022-12-12 15:36:43,864 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5232198142414861 [2022-12-12 15:36:43,864 INFO L175 Difference]: Start difference. First operand has 218 places, 1955 transitions, 27727 flow. Second operand 34 states and 338 transitions. [2022-12-12 15:36:43,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 3057 transitions, 47397 flow [2022-12-12 15:36:47,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 3057 transitions, 45548 flow, removed 860 selfloop flow, removed 6 redundant places. [2022-12-12 15:36:47,857 INFO L231 Difference]: Finished difference. Result has 260 places, 2823 transitions, 45811 flow [2022-12-12 15:36:47,859 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=26342, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1955, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=45811, PETRI_PLACES=260, PETRI_TRANSITIONS=2823} [2022-12-12 15:36:47,867 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 234 predicate places. [2022-12-12 15:36:47,867 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 2823 transitions, 45811 flow [2022-12-12 15:36:47,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 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) [2022-12-12 15:36:47,867 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:36:47,867 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:36:47,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 15:36:48,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:48,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:36:48,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:36:48,077 INFO L85 PathProgramCache]: Analyzing trace with hash -943966424, now seen corresponding path program 8 times [2022-12-12 15:36:48,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:36:48,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542068221] [2022-12-12 15:36:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:36:48,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:36:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:36:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:36:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:36:48,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542068221] [2022-12-12 15:36:48,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542068221] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:36:48,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495179036] [2022-12-12 15:36:48,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 15:36:48,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:36:48,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:36:48,681 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:36:48,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 15:36:48,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 15:36:48,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:36:48,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-12 15:36:48,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:36:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:36:49,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:36:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:36:49,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495179036] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:36:49,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:36:49,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2022-12-12 15:36:49,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946898462] [2022-12-12 15:36:49,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:36:49,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-12 15:36:49,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:36:49,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-12 15:36:49,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-12-12 15:36:49,796 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:36:49,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 2823 transitions, 45811 flow. Second operand has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:36:49,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:36:49,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:36:49,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:37:05,373 INFO L130 PetriNetUnfolder]: 25862/36685 cut-off events. [2022-12-12 15:37:05,387 INFO L131 PetriNetUnfolder]: For 565389/565389 co-relation queries the response was YES. [2022-12-12 15:37:05,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296019 conditions, 36685 events. 25862/36685 cut-off events. For 565389/565389 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 229328 event pairs, 506 based on Foata normal form. 51/36736 useless extension candidates. Maximal degree in co-relation 295286. Up to 12266 conditions per place. [2022-12-12 15:37:05,915 INFO L137 encePairwiseOnDemand]: 11/19 looper letters, 1425 selfloop transitions, 3385 changer transitions 33/4843 dead transitions. [2022-12-12 15:37:05,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 4843 transitions, 85425 flow [2022-12-12 15:37:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-12 15:37:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-12 15:37:05,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 386 transitions. [2022-12-12 15:37:05,919 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4322508398656215 [2022-12-12 15:37:05,919 INFO L175 Difference]: Start difference. First operand has 260 places, 2823 transitions, 45811 flow. Second operand 47 states and 386 transitions. [2022-12-12 15:37:05,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 4843 transitions, 85425 flow [2022-12-12 15:37:17,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 4843 transitions, 84696 flow, removed 354 selfloop flow, removed 3 redundant places. [2022-12-12 15:37:17,426 INFO L231 Difference]: Finished difference. Result has 322 places, 4560 transitions, 85748 flow [2022-12-12 15:37:17,428 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=45166, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1857, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=85748, PETRI_PLACES=322, PETRI_TRANSITIONS=4560} [2022-12-12 15:37:17,429 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 296 predicate places. [2022-12-12 15:37:17,429 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 4560 transitions, 85748 flow [2022-12-12 15:37:17,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:37:17,431 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:37:17,431 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:37:17,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-12 15:37:17,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-12 15:37:17,635 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:37:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:37:17,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1654913772, now seen corresponding path program 9 times [2022-12-12 15:37:17,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:37:17,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017662393] [2022-12-12 15:37:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:37:17,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:37:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:37:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:37:18,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:37:18,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017662393] [2022-12-12 15:37:18,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017662393] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:37:18,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505937752] [2022-12-12 15:37:18,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 15:37:18,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:37:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:37:18,232 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:37:18,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 15:37:18,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 15:37:18,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:37:18,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-12 15:37:18,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:37:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:37:18,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:37:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:37:19,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505937752] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:37:19,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:37:19,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2022-12-12 15:37:19,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219461996] [2022-12-12 15:37:19,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:37:19,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 15:37:19,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:37:19,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 15:37:19,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-12-12 15:37:19,128 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:37:19,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 4560 transitions, 85748 flow. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 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) [2022-12-12 15:37:19,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:37:19,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:37:19,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:38:01,190 INFO L130 PetriNetUnfolder]: 46527/65704 cut-off events. [2022-12-12 15:38:01,190 INFO L131 PetriNetUnfolder]: For 1564157/1564157 co-relation queries the response was YES. [2022-12-12 15:38:02,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630531 conditions, 65704 events. 46527/65704 cut-off events. For 1564157/1564157 co-relation queries the response was YES. Maximal size of possible extension queue 2765. Compared 439970 event pairs, 1123 based on Foata normal form. 95/65799 useless extension candidates. Maximal degree in co-relation 629625. Up to 20005 conditions per place. [2022-12-12 15:38:02,609 INFO L137 encePairwiseOnDemand]: 12/19 looper letters, 1977 selfloop transitions, 6837 changer transitions 154/8968 dead transitions. [2022-12-12 15:38:02,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 8968 transitions, 186834 flow [2022-12-12 15:38:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-12 15:38:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-12 15:38:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 402 transitions. [2022-12-12 15:38:02,611 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5160462130937099 [2022-12-12 15:38:02,611 INFO L175 Difference]: Start difference. First operand has 322 places, 4560 transitions, 85748 flow. Second operand 41 states and 402 transitions. [2022-12-12 15:38:02,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 8968 transitions, 186834 flow [2022-12-12 15:38:41,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 8968 transitions, 183052 flow, removed 1889 selfloop flow, removed 1 redundant places. [2022-12-12 15:38:42,040 INFO L231 Difference]: Finished difference. Result has 388 places, 8343 transitions, 185925 flow [2022-12-12 15:38:42,043 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=84060, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=185925, PETRI_PLACES=388, PETRI_TRANSITIONS=8343} [2022-12-12 15:38:42,043 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 362 predicate places. [2022-12-12 15:38:42,043 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 8343 transitions, 185925 flow [2022-12-12 15:38:42,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 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) [2022-12-12 15:38:42,043 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:38:42,043 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:38:42,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-12 15:38:42,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:38:42,250 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:38:42,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:38:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash -708909596, now seen corresponding path program 10 times [2022-12-12 15:38:42,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:38:42,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534271272] [2022-12-12 15:38:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:38:42,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:38:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:38:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:38:42,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:38:42,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534271272] [2022-12-12 15:38:42,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534271272] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:38:42,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544937570] [2022-12-12 15:38:42,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 15:38:42,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:38:42,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:38:42,748 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:38:42,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 15:38:42,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 15:38:42,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:38:42,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-12 15:38:42,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:38:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:38:43,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:38:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:38:43,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544937570] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:38:43,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:38:43,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2022-12-12 15:38:43,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040782759] [2022-12-12 15:38:43,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:38:43,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-12 15:38:43,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:38:43,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-12 15:38:43,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-12-12 15:38:43,841 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 19 [2022-12-12 15:38:43,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 8343 transitions, 185925 flow. Second operand has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 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) [2022-12-12 15:38:43,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:38:43,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 19 [2022-12-12 15:38:43,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:17,197 INFO L130 PetriNetUnfolder]: 75104/104812 cut-off events. [2022-12-12 15:41:17,197 INFO L131 PetriNetUnfolder]: For 2971246/2971246 co-relation queries the response was YES. [2022-12-12 15:41:19,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130507 conditions, 104812 events. 75104/104812 cut-off events. For 2971246/2971246 co-relation queries the response was YES. Maximal size of possible extension queue 4443. Compared 723089 event pairs, 1074 based on Foata normal form. 73/104881 useless extension candidates. Maximal degree in co-relation 1129119. Up to 32247 conditions per place. [2022-12-12 15:41:20,292 INFO L137 encePairwiseOnDemand]: 12/19 looper letters, 2833 selfloop transitions, 12312 changer transitions 138/15283 dead transitions. [2022-12-12 15:41:20,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 15283 transitions, 367658 flow [2022-12-12 15:41:20,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-12 15:41:20,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-12-12 15:41:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 497 transitions. [2022-12-12 15:41:20,296 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45099818511796735 [2022-12-12 15:41:20,296 INFO L175 Difference]: Start difference. First operand has 388 places, 8343 transitions, 185925 flow. Second operand 58 states and 497 transitions. [2022-12-12 15:41:20,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 15283 transitions, 367658 flow Received shutdown request... [2022-12-12 15:48:09,162 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 15:48:09,163 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 15:48:09,227 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 15:48:09,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 15:48:09,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-12 15:48:09,432 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2022-12-12 15:48:09,433 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 15:48:09,433 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 15:48:09,433 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 15:48:09,433 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1] [2022-12-12 15:48:09,435 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 15:48:09,436 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 15:48:09,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 03:48:09 BasicIcfg [2022-12-12 15:48:09,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 15:48:09,438 INFO L158 Benchmark]: Toolchain (without parser) took 721643.28ms. Allocated memory was 180.4MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 156.4MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 4.8GB. Max. memory is 8.0GB. [2022-12-12 15:48:09,438 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory was 156.7MB in the beginning and 156.6MB in the end (delta: 88.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 15:48:09,438 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.63ms. Allocated memory is still 180.4MB. Free memory was 156.4MB in the beginning and 143.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 15:48:09,438 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.16ms. Allocated memory is still 180.4MB. Free memory was 143.8MB in the beginning and 142.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 15:48:09,438 INFO L158 Benchmark]: Boogie Preprocessor took 28.14ms. Allocated memory is still 180.4MB. Free memory was 141.7MB in the beginning and 140.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 15:48:09,438 INFO L158 Benchmark]: RCFGBuilder took 425.38ms. Allocated memory is still 180.4MB. Free memory was 140.7MB in the beginning and 125.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-12 15:48:09,439 INFO L158 Benchmark]: TraceAbstraction took 720819.21ms. Allocated memory was 180.4MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 123.4MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 4.8GB. Max. memory is 8.0GB. [2022-12-12 15:48:09,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory was 156.7MB in the beginning and 156.6MB in the end (delta: 88.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 301.63ms. Allocated memory is still 180.4MB. Free memory was 156.4MB in the beginning and 143.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.16ms. Allocated memory is still 180.4MB. Free memory was 143.8MB in the beginning and 142.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.14ms. Allocated memory is still 180.4MB. Free memory was 141.7MB in the beginning and 140.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 425.38ms. Allocated memory is still 180.4MB. Free memory was 140.7MB in the beginning and 125.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 720819.21ms. Allocated memory was 180.4MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 123.4MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 4.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 105 PlacesBefore, 26 PlacesAfterwards, 111 TransitionsBefore, 19 TransitionsAfterwards, 2958 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 34 TrivialYvCompositions, 45 ConcurrentYvCompositions, 10 ChoiceCompositions, 89 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1823, independent: 1823, independent conditional: 1823, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1823, independent: 1823, independent conditional: 0, independent unconditional: 1823, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1823, independent: 1823, independent conditional: 0, independent unconditional: 1823, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1823, independent: 1823, independent conditional: 0, independent unconditional: 1823, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1482, independent: 1482, independent conditional: 0, independent unconditional: 1482, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1482, independent: 1468, independent conditional: 0, independent unconditional: 1468, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 110, independent: 110, independent conditional: 0, independent unconditional: 110, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1823, independent: 341, independent conditional: 0, independent unconditional: 341, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1482, unknown conditional: 0, unknown unconditional: 1482] , Statistics on independence cache: Total cache size (in pairs): 2721, Positive cache size: 2721, Positive conditional cache size: 0, Positive unconditional cache size: 2721, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 151 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 720.7s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 700.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2398 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2398 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 783 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8075 IncrementalHoareTripleChecker+Invalid, 8858 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 783 mSolverCounterUnsat, 0 mSDtfsCounter, 8075 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 702 GetRequests, 293 SyntacticMatches, 23 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6285 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185925occurred in iteration=12, InterpolantAutomatonStates: 279, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 660 ConstructedInterpolants, 0 QuantifiedInterpolants, 9337 SizeOfPredicates, 85 NumberOfNonLiveVariables, 1698 ConjunctsInSsa, 205 ConjunctsInUnsatCore, 33 InterpolantComputations, 3 PerfectInterpolantSequences, 45/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown