/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/pthread-wmm/thin000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:39:12,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:39:12,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:39:12,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 02:39:12,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:39:12,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:39:12,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:39:12,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:39:12,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:39:12,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:39:12,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:39:12,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:39:12,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:39:12,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:39:12,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:39:12,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:39:12,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:39:12,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:39:12,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:39:12,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:39:12,601 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 [2021-03-11 02:39:12,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:39:12,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:39:12,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:39:12,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:39:12,630 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:39:12,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:39:12,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:39:12,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:39:12,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:39:12,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:39:12,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:39:12,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:39:12,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:39:12,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:39:12,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:39:12,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:39:12,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:39:12,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:39:12,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:39:12,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:39:12,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:39:12,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:39:12,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:39:12,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:39:12,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:39:12,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:39:12,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:39:12,633 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:39:12,633 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:39:12,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:39:12,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:39:12,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:39:12,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:39:12,859 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:39:12,859 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:39:12,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin000_pso.oepc.i [2021-03-11 02:39:12,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c3e6591/8438257602b946699306754ac16c9119/FLAG25fc2427d [2021-03-11 02:39:13,291 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:39:13,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_pso.oepc.i [2021-03-11 02:39:13,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c3e6591/8438257602b946699306754ac16c9119/FLAG25fc2427d [2021-03-11 02:39:13,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c3e6591/8438257602b946699306754ac16c9119 [2021-03-11 02:39:13,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:39:13,654 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:39:13,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:39:13,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:39:13,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:39:13,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:39:13" (1/1) ... [2021-03-11 02:39:13,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3758c6d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13, skipping insertion in model container [2021-03-11 02:39:13,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:39:13" (1/1) ... [2021-03-11 02:39:13,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:39:13,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:39:13,774 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_pso.oepc.i[950,963] [2021-03-11 02:39:13,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:39:13,894 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:39:13,901 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_pso.oepc.i[950,963] [2021-03-11 02:39:13,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:39:13,972 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:39:13,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13 WrapperNode [2021-03-11 02:39:13,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:39:13,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:39:13,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:39:13,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:39:13,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13" (1/1) ... [2021-03-11 02:39:13,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13" (1/1) ... [2021-03-11 02:39:13,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:39:13,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:39:13,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:39:13,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:39:14,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13" (1/1) ... [2021-03-11 02:39:14,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13" (1/1) ... [2021-03-11 02:39:14,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13" (1/1) ... [2021-03-11 02:39:14,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13" (1/1) ... [2021-03-11 02:39:14,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13" (1/1) ... [2021-03-11 02:39:14,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13" (1/1) ... [2021-03-11 02:39:14,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13" (1/1) ... [2021-03-11 02:39:14,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:39:14,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:39:14,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:39:14,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:39:14,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:39:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:39:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:39:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:39:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:39:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:39:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:39:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:39:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:39:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:39:14,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:39:14,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:39:14,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:39:14,050 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:39:14,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:39:14,293 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:39:14,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:39:14 BoogieIcfgContainer [2021-03-11 02:39:14,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:39:14,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:39:14,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:39:14,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:39:14,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:39:13" (1/3) ... [2021-03-11 02:39:14,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7675b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:39:14, skipping insertion in model container [2021-03-11 02:39:14,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:13" (2/3) ... [2021-03-11 02:39:14,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7675b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:39:14, skipping insertion in model container [2021-03-11 02:39:14,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:39:14" (3/3) ... [2021-03-11 02:39:14,300 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_pso.oepc.i [2021-03-11 02:39:14,304 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:39:14,307 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:39:14,307 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:39:14,327 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,328 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,328 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,328 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,328 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,328 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,328 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,329 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,329 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,329 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,329 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,329 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,330 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,330 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,330 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,330 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,330 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,331 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,331 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,331 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,331 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,332 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,333 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,333 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,334 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,334 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,338 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,338 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:14,340 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:39:14,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 02:39:14,372 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:39:14,373 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:39:14,373 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:39:14,373 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:39:14,373 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:39:14,373 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:39:14,374 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:39:14,374 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:39:14,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 02:39:14,413 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-03-11 02:39:14,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:39:14,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-11 02:39:14,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 02:39:14,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-03-11 02:39:14,444 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-03-11 02:39:14,444 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:39:14,444 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:39:14,445 INFO L255 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] [2021-03-11 02:39:14,445 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:39:14,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:39:14,449 INFO L82 PathProgramCache]: Analyzing trace with hash -894398438, now seen corresponding path program 1 times [2021-03-11 02:39:14,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:39:14,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476777209] [2021-03-11 02:39:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:39:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:39:14,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:14,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:14,626 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 02:39:14,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:14,634 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:39:14,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:39:14,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:14,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:14,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:39:14,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476777209] [2021-03-11 02:39:14,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:39:14,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:39:14,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413163884] [2021-03-11 02:39:14,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:39:14,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:39:14,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:39:14,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:39:14,680 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2021-03-11 02:39:14,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 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) [2021-03-11 02:39:14,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:39:14,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2021-03-11 02:39:14,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:39:14,773 INFO L129 PetriNetUnfolder]: 20/107 cut-off events. [2021-03-11 02:39:14,773 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:39:14,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 107 events. 20/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 302 event pairs, 5 based on Foata normal form. 6/110 useless extension candidates. Maximal degree in co-relation 139. Up to 19 conditions per place. [2021-03-11 02:39:14,775 INFO L132 encePairwiseOnDemand]: 54/61 looper letters, 9 selfloop transitions, 2 changer transitions 16/65 dead transitions. [2021-03-11 02:39:14,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 190 flow [2021-03-11 02:39:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:39:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:39:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 454 transitions. [2021-03-11 02:39:14,784 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8269581056466302 [2021-03-11 02:39:14,784 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 454 transitions. [2021-03-11 02:39:14,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 454 transitions. [2021-03-11 02:39:14,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:39:14,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 454 transitions. [2021-03-11 02:39:14,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 50.44444444444444) internal successors, (454), 9 states have internal predecessors, (454), 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) [2021-03-11 02:39:14,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:39:14,793 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:39:14,794 INFO L185 Difference]: Start difference. First operand has 55 places, 49 transitions, 104 flow. Second operand 9 states and 454 transitions. [2021-03-11 02:39:14,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 190 flow [2021-03-11 02:39:14,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 02:39:14,798 INFO L241 Difference]: Finished difference. Result has 68 places, 48 transitions, 120 flow [2021-03-11 02:39:14,799 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=120, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2021-03-11 02:39:14,799 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2021-03-11 02:39:14,799 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 120 flow [2021-03-11 02:39:14,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 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) [2021-03-11 02:39:14,800 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:39:14,800 INFO L255 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] [2021-03-11 02:39:14,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:39:14,800 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:39:14,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:39:14,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1574208101, now seen corresponding path program 1 times [2021-03-11 02:39:14,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:39:14,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893543470] [2021-03-11 02:39:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:39:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:39:14,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:14,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:14,844 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:39:14,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:39:14,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:14,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:14,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:39:14,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893543470] [2021-03-11 02:39:14,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:39:14,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:39:14,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268603870] [2021-03-11 02:39:14,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:39:14,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:39:14,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:39:14,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:39:14,872 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 61 [2021-03-11 02:39:14,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2021-03-11 02:39:14,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:39:14,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 61 [2021-03-11 02:39:14,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:39:14,954 INFO L129 PetriNetUnfolder]: 3/71 cut-off events. [2021-03-11 02:39:14,954 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-11 02:39:14,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 71 events. 3/71 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 2/72 useless extension candidates. Maximal degree in co-relation 108. Up to 7 conditions per place. [2021-03-11 02:39:14,955 INFO L132 encePairwiseOnDemand]: 55/61 looper letters, 6 selfloop transitions, 2 changer transitions 11/58 dead transitions. [2021-03-11 02:39:14,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 58 transitions, 194 flow [2021-03-11 02:39:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:39:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:39:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 461 transitions. [2021-03-11 02:39:14,957 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8397085610200364 [2021-03-11 02:39:14,957 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 461 transitions. [2021-03-11 02:39:14,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 461 transitions. [2021-03-11 02:39:14,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:39:14,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 461 transitions. [2021-03-11 02:39:14,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 51.22222222222222) internal successors, (461), 9 states have internal predecessors, (461), 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) [2021-03-11 02:39:14,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:39:14,959 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:39:14,959 INFO L185 Difference]: Start difference. First operand has 68 places, 48 transitions, 120 flow. Second operand 9 states and 461 transitions. [2021-03-11 02:39:14,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 58 transitions, 194 flow [2021-03-11 02:39:14,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 162 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-03-11 02:39:14,961 INFO L241 Difference]: Finished difference. Result has 69 places, 47 transitions, 122 flow [2021-03-11 02:39:14,961 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=122, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2021-03-11 02:39:14,962 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2021-03-11 02:39:14,962 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 122 flow [2021-03-11 02:39:14,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2021-03-11 02:39:14,962 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:39:14,962 INFO L255 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] [2021-03-11 02:39:14,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:39:14,962 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:39:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:39:14,963 INFO L82 PathProgramCache]: Analyzing trace with hash -739361380, now seen corresponding path program 1 times [2021-03-11 02:39:14,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:39:14,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332657455] [2021-03-11 02:39:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:39:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:39:14,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:14,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:14,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:14,998 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 02:39:14,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:15,003 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:39:15,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:39:15,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:15,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:15,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:39:15,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332657455] [2021-03-11 02:39:15,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:39:15,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:39:15,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263572065] [2021-03-11 02:39:15,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:39:15,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:39:15,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:39:15,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:39:15,031 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 61 [2021-03-11 02:39:15,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 46.57142857142857) internal successors, (326), 7 states have internal predecessors, (326), 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) [2021-03-11 02:39:15,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:39:15,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 61 [2021-03-11 02:39:15,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:39:15,139 INFO L129 PetriNetUnfolder]: 10/85 cut-off events. [2021-03-11 02:39:15,139 INFO L130 PetriNetUnfolder]: For 29/46 co-relation queries the response was YES. [2021-03-11 02:39:15,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 85 events. 10/85 cut-off events. For 29/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 165 event pairs, 0 based on Foata normal form. 2/86 useless extension candidates. Maximal degree in co-relation 152. Up to 14 conditions per place. [2021-03-11 02:39:15,140 INFO L132 encePairwiseOnDemand]: 52/61 looper letters, 14 selfloop transitions, 4 changer transitions 13/66 dead transitions. [2021-03-11 02:39:15,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 264 flow [2021-03-11 02:39:15,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:39:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:39:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 528 transitions. [2021-03-11 02:39:15,142 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7868852459016393 [2021-03-11 02:39:15,142 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 528 transitions. [2021-03-11 02:39:15,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 528 transitions. [2021-03-11 02:39:15,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:39:15,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 528 transitions. [2021-03-11 02:39:15,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 48.0) internal successors, (528), 11 states have internal predecessors, (528), 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) [2021-03-11 02:39:15,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 61.0) internal successors, (732), 12 states have internal predecessors, (732), 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) [2021-03-11 02:39:15,144 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 61.0) internal successors, (732), 12 states have internal predecessors, (732), 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) [2021-03-11 02:39:15,144 INFO L185 Difference]: Start difference. First operand has 69 places, 47 transitions, 122 flow. Second operand 11 states and 528 transitions. [2021-03-11 02:39:15,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 264 flow [2021-03-11 02:39:15,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 66 transitions, 220 flow, removed 20 selfloop flow, removed 8 redundant places. [2021-03-11 02:39:15,146 INFO L241 Difference]: Finished difference. Result has 73 places, 47 transitions, 138 flow [2021-03-11 02:39:15,146 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=138, PETRI_PLACES=73, PETRI_TRANSITIONS=47} [2021-03-11 02:39:15,146 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2021-03-11 02:39:15,147 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 47 transitions, 138 flow [2021-03-11 02:39:15,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 46.57142857142857) internal successors, (326), 7 states have internal predecessors, (326), 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) [2021-03-11 02:39:15,147 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:39:15,147 INFO L255 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] [2021-03-11 02:39:15,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:39:15,147 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:39:15,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:39:15,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1364973306, now seen corresponding path program 2 times [2021-03-11 02:39:15,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:39:15,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502358310] [2021-03-11 02:39:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:39:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:39:15,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:15,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:15,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:15,184 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:39:15,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:39:15,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:15,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:15,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:39:15,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502358310] [2021-03-11 02:39:15,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:39:15,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:39:15,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788341632] [2021-03-11 02:39:15,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:39:15,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:39:15,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:39:15,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:39:15,218 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2021-03-11 02:39:15,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 47 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 48.285714285714285) internal successors, (338), 7 states have internal predecessors, (338), 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) [2021-03-11 02:39:15,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:39:15,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2021-03-11 02:39:15,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:39:15,327 INFO L129 PetriNetUnfolder]: 9/87 cut-off events. [2021-03-11 02:39:15,327 INFO L130 PetriNetUnfolder]: For 80/114 co-relation queries the response was YES. [2021-03-11 02:39:15,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 87 events. 9/87 cut-off events. For 80/114 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 203 event pairs, 1 based on Foata normal form. 4/88 useless extension candidates. Maximal degree in co-relation 188. Up to 11 conditions per place. [2021-03-11 02:39:15,333 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 6 selfloop transitions, 4 changer transitions 12/59 dead transitions. [2021-03-11 02:39:15,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 59 transitions, 243 flow [2021-03-11 02:39:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:39:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:39:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 494 transitions. [2021-03-11 02:39:15,335 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8098360655737705 [2021-03-11 02:39:15,335 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 494 transitions. [2021-03-11 02:39:15,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 494 transitions. [2021-03-11 02:39:15,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:39:15,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 494 transitions. [2021-03-11 02:39:15,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 49.4) internal successors, (494), 10 states have internal predecessors, (494), 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) [2021-03-11 02:39:15,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:39:15,337 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:39:15,337 INFO L185 Difference]: Start difference. First operand has 73 places, 47 transitions, 138 flow. Second operand 10 states and 494 transitions. [2021-03-11 02:39:15,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 59 transitions, 243 flow [2021-03-11 02:39:15,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 188 flow, removed 20 selfloop flow, removed 12 redundant places. [2021-03-11 02:39:15,340 INFO L241 Difference]: Finished difference. Result has 72 places, 47 transitions, 140 flow [2021-03-11 02:39:15,341 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=140, PETRI_PLACES=72, PETRI_TRANSITIONS=47} [2021-03-11 02:39:15,341 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2021-03-11 02:39:15,341 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 47 transitions, 140 flow [2021-03-11 02:39:15,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 48.285714285714285) internal successors, (338), 7 states have internal predecessors, (338), 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) [2021-03-11 02:39:15,341 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:39:15,341 INFO L255 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] [2021-03-11 02:39:15,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:39:15,341 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:39:15,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:39:15,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1288652630, now seen corresponding path program 1 times [2021-03-11 02:39:15,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:39:15,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377154908] [2021-03-11 02:39:15,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:39:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:39:15,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:15,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:15,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:15,392 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 02:39:15,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:15,397 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:39:15,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:39:15,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:15,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:15,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:15,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:39:15,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377154908] [2021-03-11 02:39:15,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:39:15,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:39:15,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196026734] [2021-03-11 02:39:15,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:39:15,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:39:15,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:39:15,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:39:15,427 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 61 [2021-03-11 02:39:15,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 47 transitions, 140 flow. Second operand has 8 states, 8 states have (on average 46.375) internal successors, (371), 8 states have internal predecessors, (371), 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) [2021-03-11 02:39:15,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:39:15,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 61 [2021-03-11 02:39:15,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:39:15,540 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-03-11 02:39:15,540 INFO L130 PetriNetUnfolder]: For 41/48 co-relation queries the response was YES. [2021-03-11 02:39:15,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 53 events. 4/53 cut-off events. For 41/48 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 2/55 useless extension candidates. Maximal degree in co-relation 107. Up to 7 conditions per place. [2021-03-11 02:39:15,545 INFO L132 encePairwiseOnDemand]: 54/61 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2021-03-11 02:39:15,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 52 transitions, 201 flow [2021-03-11 02:39:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:39:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:39:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 470 transitions. [2021-03-11 02:39:15,546 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7704918032786885 [2021-03-11 02:39:15,546 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 470 transitions. [2021-03-11 02:39:15,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 470 transitions. [2021-03-11 02:39:15,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:39:15,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 470 transitions. [2021-03-11 02:39:15,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 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) [2021-03-11 02:39:15,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:39:15,548 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:39:15,549 INFO L185 Difference]: Start difference. First operand has 72 places, 47 transitions, 140 flow. Second operand 10 states and 470 transitions. [2021-03-11 02:39:15,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 52 transitions, 201 flow [2021-03-11 02:39:15,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 52 transitions, 160 flow, removed 13 selfloop flow, removed 9 redundant places. [2021-03-11 02:39:15,550 INFO L241 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2021-03-11 02:39:15,550 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2021-03-11 02:39:15,550 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2021-03-11 02:39:15,550 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2021-03-11 02:39:15,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 46.375) internal successors, (371), 8 states have internal predecessors, (371), 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) [2021-03-11 02:39:15,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:39:15,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:39:15 BasicIcfg [2021-03-11 02:39:15,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:39:15,556 INFO L168 Benchmark]: Toolchain (without parser) took 1904.17 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 234.9 MB in the beginning and 280.1 MB in the end (delta: -45.2 MB). Peak memory consumption was 42.3 MB. Max. memory is 16.0 GB. [2021-03-11 02:39:15,556 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 238.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:39:15,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.65 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 234.5 MB in the beginning and 307.4 MB in the end (delta: -72.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.0 GB. [2021-03-11 02:39:15,557 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.21 ms. Allocated memory is still 343.9 MB. Free memory was 307.4 MB in the beginning and 305.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:39:15,560 INFO L168 Benchmark]: Boogie Preprocessor took 12.91 ms. Allocated memory is still 343.9 MB. Free memory was 305.8 MB in the beginning and 304.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:39:15,560 INFO L168 Benchmark]: RCFGBuilder took 284.63 ms. Allocated memory is still 343.9 MB. Free memory was 304.3 MB in the beginning and 284.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:39:15,560 INFO L168 Benchmark]: TraceAbstraction took 1259.91 ms. Allocated memory is still 343.9 MB. Free memory was 284.3 MB in the beginning and 280.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.0 GB. [2021-03-11 02:39:15,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 238.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 317.65 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 234.5 MB in the beginning and 307.4 MB in the end (delta: -72.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.21 ms. Allocated memory is still 343.9 MB. Free memory was 307.4 MB in the beginning and 305.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.91 ms. Allocated memory is still 343.9 MB. Free memory was 305.8 MB in the beginning and 304.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 284.63 ms. Allocated memory is still 343.9 MB. Free memory was 304.3 MB in the beginning and 284.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1259.91 ms. Allocated memory is still 343.9 MB. Free memory was 284.3 MB in the beginning and 280.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 16.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1181.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 578.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 53.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 61 SDtfs, 119 SDslu, 172 SDs, 0 SdLazy, 142 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 476.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=4, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.9ms SsaConstructionTime, 98.1ms SatisfiabilityAnalysisTime, 332.2ms InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 759 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...