/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 02:53:42,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 02:53:42,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 02:53:42,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 02:53:42,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 02:53:42,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 02:53:42,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 02:53:42,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 02:53:42,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 02:53:42,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 02:53:42,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 02:53:42,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 02:53:42,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 02:53:42,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 02:53:42,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 02:53:42,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 02:53:42,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 02:53:42,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 02:53:42,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 02:53:42,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 02:53:42,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 02:53:42,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 02:53:42,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 02:53:42,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 02:53:42,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 02:53:42,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 02:53:42,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 02:53:42,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 02:53:42,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-01-19 02:53:42,877 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 02:53:42,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 02:53:42,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 02:53:42,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 02:53:42,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 02:53:42,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 02:53:42,879 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 02:53:42,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 02:53:42,879 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 02:53:42,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 02:53:42,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 02:53:42,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 02:53:42,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 02:53:42,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 02:53:42,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 02:53:42,880 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 02:53:42,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 02:53:42,880 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 02:53:42,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 02:53:42,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 02:53:42,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 02:53:42,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 02:53:42,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 02:53:42,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:53:42,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 02:53:42,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 02:53:42,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 02:53:42,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 02:53:42,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 02:53:42,881 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 02:53:42,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 02:53:42,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 02:53:43,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 02:53:43,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 02:53:43,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 02:53:43,040 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 02:53:43,041 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 02:53:43,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2022-01-19 02:53:43,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4651b57df/49095e62685d4c88a237df313f43eeb5/FLAGa743785dc [2022-01-19 02:53:43,403 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 02:53:43,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2022-01-19 02:53:43,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4651b57df/49095e62685d4c88a237df313f43eeb5/FLAGa743785dc [2022-01-19 02:53:43,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4651b57df/49095e62685d4c88a237df313f43eeb5 [2022-01-19 02:53:43,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 02:53:43,417 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 02:53:43,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 02:53:43,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 02:53:43,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 02:53:43,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1114857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43, skipping insertion in model container [2022-01-19 02:53:43,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 02:53:43,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 02:53:43,557 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3046,3059] [2022-01-19 02:53:43,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:53:43,564 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 02:53:43,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3046,3059] [2022-01-19 02:53:43,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:53:43,584 INFO L208 MainTranslator]: Completed translation [2022-01-19 02:53:43,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43 WrapperNode [2022-01-19 02:53:43,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 02:53:43,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 02:53:43,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 02:53:43,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 02:53:43,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,605 INFO L137 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 123 [2022-01-19 02:53:43,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 02:53:43,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 02:53:43,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 02:53:43,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 02:53:43,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 02:53:43,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 02:53:43,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 02:53:43,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 02:53:43,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43" (1/1) ... [2022-01-19 02:53:43,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:53:43,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:53:43,637 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) [2022-01-19 02:53:43,656 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 [2022-01-19 02:53:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 02:53:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 02:53:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 02:53:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 02:53:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 02:53:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 02:53:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 02:53:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 02:53:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 02:53:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 02:53:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 02:53:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 02:53:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 02:53:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 02:53:43,666 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 02:53:43,733 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 02:53:43,734 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 02:53:43,858 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 02:53:43,894 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 02:53:43,894 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 02:53:43,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:53:43 BoogieIcfgContainer [2022-01-19 02:53:43,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 02:53:43,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 02:53:43,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 02:53:43,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 02:53:43,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:53:43" (1/3) ... [2022-01-19 02:53:43,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d89a4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:53:43, skipping insertion in model container [2022-01-19 02:53:43,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:53:43" (2/3) ... [2022-01-19 02:53:43,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d89a4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:53:43, skipping insertion in model container [2022-01-19 02:53:43,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:53:43" (3/3) ... [2022-01-19 02:53:43,900 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2022-01-19 02:53:43,903 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 02:53:43,903 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 02:53:43,903 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 02:53:43,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,939 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,939 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,939 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,939 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,942 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,942 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,955 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,955 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,955 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:53:43,957 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 02:53:43,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 02:53:43,989 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 02:53:43,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 02:53:43,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 83 transitions, 182 flow [2022-01-19 02:53:44,021 INFO L129 PetriNetUnfolder]: 1/81 cut-off events. [2022-01-19 02:53:44,021 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 02:53:44,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 1/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-01-19 02:53:44,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 83 transitions, 182 flow [2022-01-19 02:53:44,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 72 transitions, 156 flow [2022-01-19 02:53:44,038 INFO L129 PetriNetUnfolder]: 1/71 cut-off events. [2022-01-19 02:53:44,038 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 02:53:44,039 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:53:44,039 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:53:44,039 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:53:44,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:53:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1443793135, now seen corresponding path program 1 times [2022-01-19 02:53:44,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:53:44,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978182929] [2022-01-19 02:53:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:53:44,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:53:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:53:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:53:44,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:53:44,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978182929] [2022-01-19 02:53:44,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978182929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:53:44,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:53:44,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:53:44,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678977819] [2022-01-19 02:53:44,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:53:44,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:53:44,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:53:44,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:53:44,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:53:44,412 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-01-19 02:53:44,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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) [2022-01-19 02:53:44,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:53:44,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-01-19 02:53:44,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:53:44,601 INFO L129 PetriNetUnfolder]: 22/202 cut-off events. [2022-01-19 02:53:44,601 INFO L130 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-01-19 02:53:44,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 202 events. 22/202 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 717 event pairs, 12 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 186. Up to 33 conditions per place. [2022-01-19 02:53:44,606 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 31 selfloop transitions, 7 changer transitions 13/102 dead transitions. [2022-01-19 02:53:44,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 102 transitions, 339 flow [2022-01-19 02:53:44,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 02:53:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 02:53:44,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 849 transitions. [2022-01-19 02:53:44,622 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7868396663577386 [2022-01-19 02:53:44,623 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 849 transitions. [2022-01-19 02:53:44,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 849 transitions. [2022-01-19 02:53:44,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:53:44,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 849 transitions. [2022-01-19 02:53:44,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 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) [2022-01-19 02:53:44,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2022-01-19 02:53:44,638 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2022-01-19 02:53:44,639 INFO L186 Difference]: Start difference. First operand has 78 places, 72 transitions, 156 flow. Second operand 13 states and 849 transitions. [2022-01-19 02:53:44,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 102 transitions, 339 flow [2022-01-19 02:53:44,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 102 transitions, 317 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 02:53:44,645 INFO L242 Difference]: Finished difference. Result has 91 places, 74 transitions, 185 flow [2022-01-19 02:53:44,647 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=185, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2022-01-19 02:53:44,651 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2022-01-19 02:53:44,652 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 185 flow [2022-01-19 02:53:44,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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) [2022-01-19 02:53:44,653 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:53:44,653 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:53:44,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 02:53:44,654 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:53:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:53:44,655 INFO L85 PathProgramCache]: Analyzing trace with hash 187280513, now seen corresponding path program 2 times [2022-01-19 02:53:44,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:53:44,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298516574] [2022-01-19 02:53:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:53:44,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:53:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:53:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:53:44,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:53:44,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298516574] [2022-01-19 02:53:44,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298516574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:53:44,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:53:44,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 02:53:44,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456219740] [2022-01-19 02:53:44,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:53:44,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 02:53:44,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:53:44,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 02:53:44,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 02:53:44,786 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-01-19 02:53:44,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 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) [2022-01-19 02:53:44,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:53:44,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-01-19 02:53:44,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:53:44,945 INFO L129 PetriNetUnfolder]: 64/401 cut-off events. [2022-01-19 02:53:44,945 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-01-19 02:53:44,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 401 events. 64/401 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2117 event pairs, 7 based on Foata normal form. 3/399 useless extension candidates. Maximal degree in co-relation 628. Up to 36 conditions per place. [2022-01-19 02:53:44,949 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 30 selfloop transitions, 12 changer transitions 9/107 dead transitions. [2022-01-19 02:53:44,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 107 transitions, 357 flow [2022-01-19 02:53:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:53:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:53:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 619 transitions. [2022-01-19 02:53:44,951 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8286479250334672 [2022-01-19 02:53:44,951 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 619 transitions. [2022-01-19 02:53:44,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 619 transitions. [2022-01-19 02:53:44,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:53:44,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 619 transitions. [2022-01-19 02:53:44,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.77777777777777) internal successors, (619), 9 states have internal predecessors, (619), 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) [2022-01-19 02:53:44,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-01-19 02:53:44,954 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-01-19 02:53:44,954 INFO L186 Difference]: Start difference. First operand has 91 places, 74 transitions, 185 flow. Second operand 9 states and 619 transitions. [2022-01-19 02:53:44,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 107 transitions, 357 flow [2022-01-19 02:53:44,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 107 transitions, 349 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 02:53:44,958 INFO L242 Difference]: Finished difference. Result has 93 places, 82 transitions, 253 flow [2022-01-19 02:53:44,958 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=253, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2022-01-19 02:53:44,959 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 15 predicate places. [2022-01-19 02:53:44,959 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 253 flow [2022-01-19 02:53:44,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 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) [2022-01-19 02:53:44,959 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:53:44,960 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:53:44,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 02:53:44,960 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:53:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:53:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash 230641, now seen corresponding path program 3 times [2022-01-19 02:53:44,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:53:44,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813307970] [2022-01-19 02:53:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:53:44,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:53:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:53:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:53:45,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:53:45,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813307970] [2022-01-19 02:53:45,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813307970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:53:45,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:53:45,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:53:45,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043271281] [2022-01-19 02:53:45,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:53:45,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:53:45,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:53:45,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:53:45,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:53:45,116 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-01-19 02:53:45,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 253 flow. Second operand has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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) [2022-01-19 02:53:45,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:53:45,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-01-19 02:53:45,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:53:45,253 INFO L129 PetriNetUnfolder]: 53/356 cut-off events. [2022-01-19 02:53:45,253 INFO L130 PetriNetUnfolder]: For 156/158 co-relation queries the response was YES. [2022-01-19 02:53:45,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 356 events. 53/356 cut-off events. For 156/158 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1852 event pairs, 25 based on Foata normal form. 3/353 useless extension candidates. Maximal degree in co-relation 618. Up to 64 conditions per place. [2022-01-19 02:53:45,257 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 21 selfloop transitions, 6 changer transitions 13/99 dead transitions. [2022-01-19 02:53:45,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 99 transitions, 375 flow [2022-01-19 02:53:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:53:45,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:53:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 651 transitions. [2022-01-19 02:53:45,258 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7843373493975904 [2022-01-19 02:53:45,259 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 651 transitions. [2022-01-19 02:53:45,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 651 transitions. [2022-01-19 02:53:45,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:53:45,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 651 transitions. [2022-01-19 02:53:45,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 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) [2022-01-19 02:53:45,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-01-19 02:53:45,270 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-01-19 02:53:45,270 INFO L186 Difference]: Start difference. First operand has 93 places, 82 transitions, 253 flow. Second operand 10 states and 651 transitions. [2022-01-19 02:53:45,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 99 transitions, 375 flow [2022-01-19 02:53:45,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 99 transitions, 370 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 02:53:45,276 INFO L242 Difference]: Finished difference. Result has 101 places, 80 transitions, 257 flow [2022-01-19 02:53:45,276 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=257, PETRI_PLACES=101, PETRI_TRANSITIONS=80} [2022-01-19 02:53:45,278 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2022-01-19 02:53:45,278 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 80 transitions, 257 flow [2022-01-19 02:53:45,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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) [2022-01-19 02:53:45,278 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:53:45,278 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:53:45,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 02:53:45,279 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:53:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:53:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2040335589, now seen corresponding path program 4 times [2022-01-19 02:53:45,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:53:45,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254747205] [2022-01-19 02:53:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:53:45,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:53:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:53:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:53:45,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:53:45,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254747205] [2022-01-19 02:53:45,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254747205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:53:45,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:53:45,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 02:53:45,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912361860] [2022-01-19 02:53:45,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:53:45,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 02:53:45,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:53:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 02:53:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 02:53:45,368 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-01-19 02:53:45,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 80 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 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) [2022-01-19 02:53:45,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:53:45,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-01-19 02:53:45,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:53:45,456 INFO L129 PetriNetUnfolder]: 42/244 cut-off events. [2022-01-19 02:53:45,456 INFO L130 PetriNetUnfolder]: For 156/164 co-relation queries the response was YES. [2022-01-19 02:53:45,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 244 events. 42/244 cut-off events. For 156/164 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 964 event pairs, 8 based on Foata normal form. 11/251 useless extension candidates. Maximal degree in co-relation 512. Up to 33 conditions per place. [2022-01-19 02:53:45,458 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 17 selfloop transitions, 10 changer transitions 11/92 dead transitions. [2022-01-19 02:53:45,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 92 transitions, 364 flow [2022-01-19 02:53:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:53:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:53:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 605 transitions. [2022-01-19 02:53:45,459 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8099062918340026 [2022-01-19 02:53:45,459 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 605 transitions. [2022-01-19 02:53:45,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 605 transitions. [2022-01-19 02:53:45,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:53:45,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 605 transitions. [2022-01-19 02:53:45,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.22222222222223) internal successors, (605), 9 states have internal predecessors, (605), 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) [2022-01-19 02:53:45,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-01-19 02:53:45,462 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-01-19 02:53:45,462 INFO L186 Difference]: Start difference. First operand has 101 places, 80 transitions, 257 flow. Second operand 9 states and 605 transitions. [2022-01-19 02:53:45,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 92 transitions, 364 flow [2022-01-19 02:53:45,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 333 flow, removed 7 selfloop flow, removed 11 redundant places. [2022-01-19 02:53:45,464 INFO L242 Difference]: Finished difference. Result has 95 places, 76 transitions, 232 flow [2022-01-19 02:53:45,464 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=95, PETRI_TRANSITIONS=76} [2022-01-19 02:53:45,465 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 17 predicate places. [2022-01-19 02:53:45,465 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 76 transitions, 232 flow [2022-01-19 02:53:45,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 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) [2022-01-19 02:53:45,465 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:53:45,465 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:53:45,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 02:53:45,466 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:53:45,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:53:45,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1606253925, now seen corresponding path program 5 times [2022-01-19 02:53:45,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:53:45,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90398758] [2022-01-19 02:53:45,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:53:45,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:53:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:53:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:53:45,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:53:45,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90398758] [2022-01-19 02:53:45,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90398758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:53:45,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:53:45,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 02:53:45,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567454935] [2022-01-19 02:53:45,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:53:45,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 02:53:45,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:53:45,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 02:53:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 02:53:45,540 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-01-19 02:53:45,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 76 transitions, 232 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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) [2022-01-19 02:53:45,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:53:45,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-01-19 02:53:45,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:53:45,652 INFO L129 PetriNetUnfolder]: 33/222 cut-off events. [2022-01-19 02:53:45,652 INFO L130 PetriNetUnfolder]: For 199/207 co-relation queries the response was YES. [2022-01-19 02:53:45,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 222 events. 33/222 cut-off events. For 199/207 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 801 event pairs, 0 based on Foata normal form. 11/231 useless extension candidates. Maximal degree in co-relation 316. Up to 24 conditions per place. [2022-01-19 02:53:45,653 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 15 selfloop transitions, 10 changer transitions 17/96 dead transitions. [2022-01-19 02:53:45,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 390 flow [2022-01-19 02:53:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:53:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:53:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 673 transitions. [2022-01-19 02:53:45,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.810843373493976 [2022-01-19 02:53:45,655 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 673 transitions. [2022-01-19 02:53:45,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 673 transitions. [2022-01-19 02:53:45,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:53:45,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 673 transitions. [2022-01-19 02:53:45,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 67.3) internal successors, (673), 10 states have internal predecessors, (673), 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) [2022-01-19 02:53:45,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-01-19 02:53:45,658 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-01-19 02:53:45,658 INFO L186 Difference]: Start difference. First operand has 95 places, 76 transitions, 232 flow. Second operand 10 states and 673 transitions. [2022-01-19 02:53:45,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 390 flow [2022-01-19 02:53:45,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 347 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-01-19 02:53:45,661 INFO L242 Difference]: Finished difference. Result has 94 places, 74 transitions, 216 flow [2022-01-19 02:53:45,661 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=216, PETRI_PLACES=94, PETRI_TRANSITIONS=74} [2022-01-19 02:53:45,663 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2022-01-19 02:53:45,663 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 74 transitions, 216 flow [2022-01-19 02:53:45,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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) [2022-01-19 02:53:45,664 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:53:45,664 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:53:45,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 02:53:45,664 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:53:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:53:45,665 INFO L85 PathProgramCache]: Analyzing trace with hash 859389663, now seen corresponding path program 6 times [2022-01-19 02:53:45,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:53:45,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062181876] [2022-01-19 02:53:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:53:45,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:53:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:53:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:53:45,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:53:45,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062181876] [2022-01-19 02:53:45,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062181876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:53:45,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:53:45,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 02:53:45,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22326221] [2022-01-19 02:53:45,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:53:45,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 02:53:45,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:53:45,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 02:53:45,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 02:53:45,697 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2022-01-19 02:53:45,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 74 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2022-01-19 02:53:45,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:53:45,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2022-01-19 02:53:45,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:53:45,716 INFO L129 PetriNetUnfolder]: 9/141 cut-off events. [2022-01-19 02:53:45,736 INFO L130 PetriNetUnfolder]: For 52/53 co-relation queries the response was YES. [2022-01-19 02:53:45,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 141 events. 9/141 cut-off events. For 52/53 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 335 event pairs, 6 based on Foata normal form. 1/140 useless extension candidates. Maximal degree in co-relation 150. Up to 26 conditions per place. [2022-01-19 02:53:45,736 INFO L132 encePairwiseOnDemand]: 80/83 looper letters, 10 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-01-19 02:53:45,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 75 transitions, 243 flow [2022-01-19 02:53:45,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 02:53:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 02:53:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2022-01-19 02:53:45,737 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8955823293172691 [2022-01-19 02:53:45,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2022-01-19 02:53:45,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2022-01-19 02:53:45,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:53:45,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2022-01-19 02:53:45,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2022-01-19 02:53:45,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2022-01-19 02:53:45,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2022-01-19 02:53:45,739 INFO L186 Difference]: Start difference. First operand has 94 places, 74 transitions, 216 flow. Second operand 3 states and 223 transitions. [2022-01-19 02:53:45,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 75 transitions, 243 flow [2022-01-19 02:53:45,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 75 transitions, 211 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-01-19 02:53:45,740 INFO L242 Difference]: Finished difference. Result has 85 places, 74 transitions, 192 flow [2022-01-19 02:53:45,741 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2022-01-19 02:53:45,741 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2022-01-19 02:53:45,741 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 192 flow [2022-01-19 02:53:45,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2022-01-19 02:53:45,741 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:53:45,741 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:53:45,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 02:53:45,742 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:53:45,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:53:45,742 INFO L85 PathProgramCache]: Analyzing trace with hash -839246979, now seen corresponding path program 7 times [2022-01-19 02:53:45,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:53:45,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120794233] [2022-01-19 02:53:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:53:45,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:53:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:53:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:53:45,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:53:45,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120794233] [2022-01-19 02:53:45,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120794233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:53:45,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:53:45,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 02:53:45,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200612133] [2022-01-19 02:53:45,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:53:45,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 02:53:45,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:53:45,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 02:53:45,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 02:53:45,804 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-01-19 02:53:45,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 192 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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) [2022-01-19 02:53:45,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:53:45,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-01-19 02:53:45,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:53:45,849 INFO L129 PetriNetUnfolder]: 7/76 cut-off events. [2022-01-19 02:53:45,849 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-01-19 02:53:45,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 76 events. 7/76 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 5 based on Foata normal form. 3/77 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2022-01-19 02:53:45,849 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2022-01-19 02:53:45,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 57 transitions, 174 flow [2022-01-19 02:53:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 02:53:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 02:53:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 522 transitions. [2022-01-19 02:53:45,851 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.786144578313253 [2022-01-19 02:53:45,851 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 522 transitions. [2022-01-19 02:53:45,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 522 transitions. [2022-01-19 02:53:45,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:53:45,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 522 transitions. [2022-01-19 02:53:45,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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) [2022-01-19 02:53:45,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 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) [2022-01-19 02:53:45,853 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 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) [2022-01-19 02:53:45,853 INFO L186 Difference]: Start difference. First operand has 85 places, 74 transitions, 192 flow. Second operand 8 states and 522 transitions. [2022-01-19 02:53:45,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 57 transitions, 174 flow [2022-01-19 02:53:45,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 57 transitions, 163 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-01-19 02:53:45,853 INFO L242 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2022-01-19 02:53:45,854 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2022-01-19 02:53:45,854 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, -8 predicate places. [2022-01-19 02:53:45,854 INFO L470 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2022-01-19 02:53:45,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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) [2022-01-19 02:53:45,856 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 02:53:45,857 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 02:53:45,857 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 02:53:45,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 02:53:45,859 INFO L732 BasicCegarLoop]: Path program histogram: [7] [2022-01-19 02:53:45,860 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 02:53:45,860 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 02:53:45,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 02:53:45 BasicIcfg [2022-01-19 02:53:45,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 02:53:45,863 INFO L158 Benchmark]: Toolchain (without parser) took 2445.52ms. Allocated memory is still 396.4MB. Free memory was 343.0MB in the beginning and 345.8MB in the end (delta: -2.8MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:53:45,863 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 396.4MB. Free memory is still 360.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:53:45,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.52ms. Allocated memory is still 396.4MB. Free memory was 342.8MB in the beginning and 369.3MB in the end (delta: -26.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.0GB. [2022-01-19 02:53:45,863 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.09ms. Allocated memory is still 396.4MB. Free memory was 369.3MB in the beginning and 367.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:53:45,864 INFO L158 Benchmark]: Boogie Preprocessor took 12.24ms. Allocated memory is still 396.4MB. Free memory was 367.2MB in the beginning and 366.2MB in the end (delta: 995.8kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:53:45,864 INFO L158 Benchmark]: RCFGBuilder took 277.24ms. Allocated memory is still 396.4MB. Free memory was 366.2MB in the beginning and 349.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 02:53:45,864 INFO L158 Benchmark]: TraceAbstraction took 1966.10ms. Allocated memory is still 396.4MB. Free memory was 349.4MB in the beginning and 345.8MB in the end (delta: 3.6MB). Peak memory consumption was 3.6MB. Max. memory is 16.0GB. [2022-01-19 02:53:45,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 396.4MB. Free memory is still 360.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 166.52ms. Allocated memory is still 396.4MB. Free memory was 342.8MB in the beginning and 369.3MB in the end (delta: -26.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.09ms. Allocated memory is still 396.4MB. Free memory was 369.3MB in the beginning and 367.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 12.24ms. Allocated memory is still 396.4MB. Free memory was 367.2MB in the beginning and 366.2MB in the end (delta: 995.8kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 277.24ms. Allocated memory is still 396.4MB. Free memory was 366.2MB in the beginning and 349.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 1966.10ms. Allocated memory is still 396.4MB. Free memory was 349.4MB in the beginning and 345.8MB in the end (delta: 3.6MB). Peak memory consumption was 3.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 116]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 109 locations, 3 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: 1.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 271 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 271 mSDsluCounter, 210 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 412 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 687 IncrementalHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 62 mSDtfsCounter, 687 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=3, InterpolantAutomatonStates: 62, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 483 ConstructedInterpolants, 0 QuantifiedInterpolants, 1496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 02:53:45,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...