/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-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 23:35:28,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 23:35:28,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 23:35:28,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 23:35:28,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-21 23:35:28,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-21 23:35:28,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-21 23:35:28,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-21 23:35:28,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-21 23:35:28,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-21 23:35:28,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-21 23:35:28,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-21 23:35:28,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-21 23:35:28,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-21 23:35:28,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-21 23:35:28,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-21 23:35:28,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-21 23:35:28,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 23:35:28,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 23:35:28,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 23:35:28,467 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-FA-NoLbe-Separate.epf [2021-05-21 23:35:28,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 23:35:28,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 23:35:28,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 23:35:28,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 23:35:28,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 23:35:28,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 23:35:28,488 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 23:35:28,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 23:35:28,488 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 23:35:28,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 23:35:28,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 23:35:28,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 23:35:28,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 23:35:28,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 23:35:28,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 23:35:28,489 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 23:35:28,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 23:35:28,489 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 23:35:28,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 23:35:28,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 23:35:28,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 23:35:28,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 23:35:28,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 23:35:28,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 23:35:28,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 23:35:28,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 23:35:28,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 23:35:28,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 23:35:28,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 23:35:28,491 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 23:35:28,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 23:35:28,491 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 23:35:28,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 23:35:28,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 23:35:28,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 23:35:28,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 23:35:28,810 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 23:35:28,813 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 23:35:28,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2021-05-21 23:35:28,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b421b061/f9027351908d4db08fffaecdb5e343c8/FLAG49ba2120a [2021-05-21 23:35:29,332 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 23:35:29,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2021-05-21 23:35:29,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b421b061/f9027351908d4db08fffaecdb5e343c8/FLAG49ba2120a [2021-05-21 23:35:29,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b421b061/f9027351908d4db08fffaecdb5e343c8 [2021-05-21 23:35:29,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 23:35:29,841 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 23:35:29,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 23:35:29,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 23:35:29,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 23:35:29,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:35:29" (1/1) ... [2021-05-21 23:35:29,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51cac00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:29, skipping insertion in model container [2021-05-21 23:35:29,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:35:29" (1/1) ... [2021-05-21 23:35:29,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 23:35:29,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 23:35:30,125 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i[950,963] [2021-05-21 23:35:30,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:35:30,304 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 23:35:30,314 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i[950,963] [2021-05-21 23:35:30,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:35:30,425 INFO L208 MainTranslator]: Completed translation [2021-05-21 23:35:30,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30 WrapperNode [2021-05-21 23:35:30,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 23:35:30,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 23:35:30,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 23:35:30,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 23:35:30,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30" (1/1) ... [2021-05-21 23:35:30,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30" (1/1) ... [2021-05-21 23:35:30,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 23:35:30,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 23:35:30,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 23:35:30,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 23:35:30,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30" (1/1) ... [2021-05-21 23:35:30,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30" (1/1) ... [2021-05-21 23:35:30,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30" (1/1) ... [2021-05-21 23:35:30,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30" (1/1) ... [2021-05-21 23:35:30,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30" (1/1) ... [2021-05-21 23:35:30,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30" (1/1) ... [2021-05-21 23:35:30,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30" (1/1) ... [2021-05-21 23:35:30,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 23:35:30,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 23:35:30,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 23:35:30,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 23:35:30,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30" (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 [2021-05-21 23:35:30,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 23:35:30,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 23:35:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 23:35:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 23:35:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 23:35:30,600 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 23:35:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 23:35:30,600 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 23:35:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 23:35:30,600 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 23:35:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 23:35:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 23:35:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 23:35:30,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 23:35:30,602 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 23:35:30,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 23:35:30,979 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 23:35:30,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:35:30 BoogieIcfgContainer [2021-05-21 23:35:30,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 23:35:30,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 23:35:30,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 23:35:30,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 23:35:30,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 11:35:29" (1/3) ... [2021-05-21 23:35:30,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff56ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:35:30, skipping insertion in model container [2021-05-21 23:35:30,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:30" (2/3) ... [2021-05-21 23:35:30,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff56ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:35:30, skipping insertion in model container [2021-05-21 23:35:30,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:35:30" (3/3) ... [2021-05-21 23:35:30,988 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2021-05-21 23:35:30,993 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 23:35:30,993 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 23:35:30,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 23:35:30,994 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 23:35:31,025 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,025 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,025 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,026 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,026 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,026 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,026 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,026 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,027 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,028 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,028 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,028 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,028 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,028 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,028 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,028 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,030 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,030 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,030 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,031 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,033 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,033 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,034 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,034 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,038 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,038 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,038 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,038 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,040 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,040 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,040 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,040 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:31,042 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 23:35:31,060 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-21 23:35:31,075 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:35:31,075 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:35:31,075 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:35:31,075 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:35:31,075 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:35:31,076 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:35:31,076 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:35:31,076 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 23:35:31,085 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-05-21 23:35:31,744 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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) [2021-05-21 23:35:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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) [2021-05-21 23:35:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-21 23:35:31,820 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:31,820 INFO L521 BasicCegarLoop]: 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] [2021-05-21 23:35:31,821 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:31,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:31,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1134513361, now seen corresponding path program 1 times [2021-05-21 23:35:31,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:31,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567434972] [2021-05-21 23:35:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:32,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:32,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567434972] [2021-05-21 23:35:32,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567434972] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:32,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:32,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:35:32,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156328537] [2021-05-21 23:35:32,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:35:32,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:32,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:35:32,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:35:32,291 INFO L87 Difference]: Start difference. First operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:32,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:32,539 INFO L93 Difference]: Finished difference Result 13118 states and 45582 transitions. [2021-05-21 23:35:32,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:35:32,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-05-21 23:35:32,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:32,586 INFO L225 Difference]: With dead ends: 13118 [2021-05-21 23:35:32,586 INFO L226 Difference]: Without dead ends: 4963 [2021-05-21 23:35:32,587 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:35:32,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4963 states. [2021-05-21 23:35:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4963 to 4963. [2021-05-21 23:35:32,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4963 states, 4962 states have (on average 3.4014510278113663) internal successors, (16878), 4962 states have internal predecessors, (16878), 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) [2021-05-21 23:35:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 16878 transitions. [2021-05-21 23:35:32,921 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 16878 transitions. Word has length 48 [2021-05-21 23:35:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:32,925 INFO L482 AbstractCegarLoop]: Abstraction has 4963 states and 16878 transitions. [2021-05-21 23:35:32,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 16878 transitions. [2021-05-21 23:35:32,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-21 23:35:32,943 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:32,943 INFO L521 BasicCegarLoop]: 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] [2021-05-21 23:35:32,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 23:35:32,944 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:32,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1805902004, now seen corresponding path program 1 times [2021-05-21 23:35:32,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:32,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705169206] [2021-05-21 23:35:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:33,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:33,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:33,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705169206] [2021-05-21 23:35:33,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705169206] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:33,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:33,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:35:33,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522323545] [2021-05-21 23:35:33,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:35:33,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:33,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:35:33,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:35:33,219 INFO L87 Difference]: Start difference. First operand 4963 states and 16878 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2021-05-21 23:35:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:33,394 INFO L93 Difference]: Finished difference Result 5987 states and 20175 transitions. [2021-05-21 23:35:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:35:33,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) Word has length 50 [2021-05-21 23:35:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:33,423 INFO L225 Difference]: With dead ends: 5987 [2021-05-21 23:35:33,423 INFO L226 Difference]: Without dead ends: 4783 [2021-05-21 23:35:33,424 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 135.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:35:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2021-05-21 23:35:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4783. [2021-05-21 23:35:33,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4783 states, 4782 states have (on average 3.386449184441656) internal successors, (16194), 4782 states have internal predecessors, (16194), 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) [2021-05-21 23:35:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4783 states to 4783 states and 16194 transitions. [2021-05-21 23:35:33,630 INFO L78 Accepts]: Start accepts. Automaton has 4783 states and 16194 transitions. Word has length 50 [2021-05-21 23:35:33,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:33,631 INFO L482 AbstractCegarLoop]: Abstraction has 4783 states and 16194 transitions. [2021-05-21 23:35:33,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2021-05-21 23:35:33,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4783 states and 16194 transitions. [2021-05-21 23:35:33,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-21 23:35:33,642 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:33,642 INFO L521 BasicCegarLoop]: 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] [2021-05-21 23:35:33,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 23:35:33,642 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:33,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:33,643 INFO L82 PathProgramCache]: Analyzing trace with hash 591446496, now seen corresponding path program 1 times [2021-05-21 23:35:33,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:33,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377570252] [2021-05-21 23:35:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:33,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:33,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377570252] [2021-05-21 23:35:33,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377570252] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:33,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:33,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:35:33,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328141520] [2021-05-21 23:35:33,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:35:33,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:33,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:35:33,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:35:33,742 INFO L87 Difference]: Start difference. First operand 4783 states and 16194 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-05-21 23:35:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:33,929 INFO L93 Difference]: Finished difference Result 7891 states and 26221 transitions. [2021-05-21 23:35:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:35:33,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) Word has length 51 [2021-05-21 23:35:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:33,966 INFO L225 Difference]: With dead ends: 7891 [2021-05-21 23:35:33,967 INFO L226 Difference]: Without dead ends: 5287 [2021-05-21 23:35:33,967 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:35:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2021-05-21 23:35:34,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 4447. [2021-05-21 23:35:34,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4447 states, 4446 states have (on average 3.2989203778677463) internal successors, (14667), 4446 states have internal predecessors, (14667), 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) [2021-05-21 23:35:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 14667 transitions. [2021-05-21 23:35:34,119 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 14667 transitions. Word has length 51 [2021-05-21 23:35:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:34,119 INFO L482 AbstractCegarLoop]: Abstraction has 4447 states and 14667 transitions. [2021-05-21 23:35:34,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-05-21 23:35:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 14667 transitions. [2021-05-21 23:35:34,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 23:35:34,129 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:34,129 INFO L521 BasicCegarLoop]: 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] [2021-05-21 23:35:34,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 23:35:34,129 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:34,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:34,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1199641965, now seen corresponding path program 1 times [2021-05-21 23:35:34,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:34,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64450411] [2021-05-21 23:35:34,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:34,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:34,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64450411] [2021-05-21 23:35:34,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64450411] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:34,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:34,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:35:34,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288367016] [2021-05-21 23:35:34,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:35:34,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:34,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:35:34,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:35:34,217 INFO L87 Difference]: Start difference. First operand 4447 states and 14667 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:34,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:34,399 INFO L93 Difference]: Finished difference Result 4847 states and 15882 transitions. [2021-05-21 23:35:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:35:34,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-05-21 23:35:34,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:34,422 INFO L225 Difference]: With dead ends: 4847 [2021-05-21 23:35:34,422 INFO L226 Difference]: Without dead ends: 4147 [2021-05-21 23:35:34,423 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:35:34,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2021-05-21 23:35:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 4147. [2021-05-21 23:35:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 4146 states have (on average 3.277134587554269) internal successors, (13587), 4146 states have internal predecessors, (13587), 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) [2021-05-21 23:35:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 13587 transitions. [2021-05-21 23:35:34,541 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 13587 transitions. Word has length 52 [2021-05-21 23:35:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:34,541 INFO L482 AbstractCegarLoop]: Abstraction has 4147 states and 13587 transitions. [2021-05-21 23:35:34,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 13587 transitions. [2021-05-21 23:35:34,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-21 23:35:34,552 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:34,554 INFO L521 BasicCegarLoop]: 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] [2021-05-21 23:35:34,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 23:35:34,557 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash -509769829, now seen corresponding path program 1 times [2021-05-21 23:35:34,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:34,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157718804] [2021-05-21 23:35:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:34,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:34,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157718804] [2021-05-21 23:35:34,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157718804] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:34,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:34,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:35:34,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640657123] [2021-05-21 23:35:34,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:35:34,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:34,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:35:34,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:35:34,690 INFO L87 Difference]: Start difference. First operand 4147 states and 13587 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-05-21 23:35:34,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:34,920 INFO L93 Difference]: Finished difference Result 5729 states and 18651 transitions. [2021-05-21 23:35:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:35:34,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) Word has length 53 [2021-05-21 23:35:34,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:34,931 INFO L225 Difference]: With dead ends: 5729 [2021-05-21 23:35:34,931 INFO L226 Difference]: Without dead ends: 3109 [2021-05-21 23:35:34,931 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 207.1ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-05-21 23:35:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2021-05-21 23:35:34,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 3109. [2021-05-21 23:35:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 3.144144144144144) internal successors, (9772), 3108 states have internal predecessors, (9772), 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) [2021-05-21 23:35:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 9772 transitions. [2021-05-21 23:35:35,010 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 9772 transitions. Word has length 53 [2021-05-21 23:35:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:35,010 INFO L482 AbstractCegarLoop]: Abstraction has 3109 states and 9772 transitions. [2021-05-21 23:35:35,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-05-21 23:35:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 9772 transitions. [2021-05-21 23:35:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 23:35:35,019 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:35,019 INFO L521 BasicCegarLoop]: 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] [2021-05-21 23:35:35,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 23:35:35,019 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:35,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:35,020 INFO L82 PathProgramCache]: Analyzing trace with hash 446997333, now seen corresponding path program 1 times [2021-05-21 23:35:35,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:35,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39464422] [2021-05-21 23:35:35,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:35,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:35,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39464422] [2021-05-21 23:35:35,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39464422] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:35,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:35,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:35:35,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191384345] [2021-05-21 23:35:35,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:35:35,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:35,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:35:35,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:35:35,097 INFO L87 Difference]: Start difference. First operand 3109 states and 9772 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2021-05-21 23:35:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:35,237 INFO L93 Difference]: Finished difference Result 3749 states and 11692 transitions. [2021-05-21 23:35:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:35:35,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) Word has length 54 [2021-05-21 23:35:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:35,245 INFO L225 Difference]: With dead ends: 3749 [2021-05-21 23:35:35,245 INFO L226 Difference]: Without dead ends: 2597 [2021-05-21 23:35:35,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:35:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-05-21 23:35:35,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2405. [2021-05-21 23:35:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2404 states have (on average 3.026622296173045) internal successors, (7276), 2404 states have internal predecessors, (7276), 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) [2021-05-21 23:35:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 7276 transitions. [2021-05-21 23:35:35,300 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 7276 transitions. Word has length 54 [2021-05-21 23:35:35,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:35,300 INFO L482 AbstractCegarLoop]: Abstraction has 2405 states and 7276 transitions. [2021-05-21 23:35:35,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2021-05-21 23:35:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 7276 transitions. [2021-05-21 23:35:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 23:35:35,305 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:35,305 INFO L521 BasicCegarLoop]: 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] [2021-05-21 23:35:35,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 23:35:35,305 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:35,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:35,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1128658508, now seen corresponding path program 1 times [2021-05-21 23:35:35,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:35,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527456127] [2021-05-21 23:35:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:35,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:35,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527456127] [2021-05-21 23:35:35,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527456127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:35,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:35,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:35:35,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600718111] [2021-05-21 23:35:35,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:35:35,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:35,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:35:35,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:35:35,469 INFO L87 Difference]: Start difference. First operand 2405 states and 7276 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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) [2021-05-21 23:35:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:35,586 INFO L93 Difference]: Finished difference Result 2882 states and 8614 transitions. [2021-05-21 23:35:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:35:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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) Word has length 55 [2021-05-21 23:35:35,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:35,592 INFO L225 Difference]: With dead ends: 2882 [2021-05-21 23:35:35,592 INFO L226 Difference]: Without dead ends: 2186 [2021-05-21 23:35:35,593 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 164.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:35:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2021-05-21 23:35:35,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2186. [2021-05-21 23:35:35,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 2185 states have (on average 2.9752860411899316) internal successors, (6501), 2185 states have internal predecessors, (6501), 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) [2021-05-21 23:35:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 6501 transitions. [2021-05-21 23:35:35,638 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 6501 transitions. Word has length 55 [2021-05-21 23:35:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:35,638 INFO L482 AbstractCegarLoop]: Abstraction has 2186 states and 6501 transitions. [2021-05-21 23:35:35,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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) [2021-05-21 23:35:35,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 6501 transitions. [2021-05-21 23:35:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-21 23:35:35,642 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:35,642 INFO L521 BasicCegarLoop]: 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] [2021-05-21 23:35:35,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 23:35:35,642 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:35,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:35,643 INFO L82 PathProgramCache]: Analyzing trace with hash 107476753, now seen corresponding path program 1 times [2021-05-21 23:35:35,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:35,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015062721] [2021-05-21 23:35:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:35,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:35,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015062721] [2021-05-21 23:35:35,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015062721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:35,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:35,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:35:35,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820283019] [2021-05-21 23:35:35,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:35:35,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:35,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:35:35,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:35:35,717 INFO L87 Difference]: Start difference. First operand 2186 states and 6501 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:35,839 INFO L93 Difference]: Finished difference Result 2123 states and 6141 transitions. [2021-05-21 23:35:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:35:35,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-05-21 23:35:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:35,843 INFO L225 Difference]: With dead ends: 2123 [2021-05-21 23:35:35,844 INFO L226 Difference]: Without dead ends: 1506 [2021-05-21 23:35:35,844 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 98.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 23:35:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-05-21 23:35:35,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2021-05-21 23:35:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 2.823920265780731) internal successors, (4250), 1505 states have internal predecessors, (4250), 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) [2021-05-21 23:35:35,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 4250 transitions. [2021-05-21 23:35:35,873 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 4250 transitions. Word has length 56 [2021-05-21 23:35:35,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:35,873 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 4250 transitions. [2021-05-21 23:35:35,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:35,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 4250 transitions. [2021-05-21 23:35:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-21 23:35:35,876 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:35,876 INFO L521 BasicCegarLoop]: 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] [2021-05-21 23:35:35,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 23:35:35,876 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:35,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:35,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1254971864, now seen corresponding path program 1 times [2021-05-21 23:35:35,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:35,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810648991] [2021-05-21 23:35:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:35,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:35,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810648991] [2021-05-21 23:35:35,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810648991] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:35,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:35,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:35:35,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265933483] [2021-05-21 23:35:35,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:35:35,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:35,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:35:35,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:35:35,953 INFO L87 Difference]: Start difference. First operand 1506 states and 4250 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-05-21 23:35:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:36,042 INFO L93 Difference]: Finished difference Result 1074 states and 2927 transitions. [2021-05-21 23:35:36,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 23:35:36,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) Word has length 58 [2021-05-21 23:35:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:36,042 INFO L225 Difference]: With dead ends: 1074 [2021-05-21 23:35:36,042 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 23:35:36,043 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-05-21 23:35:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 23:35:36,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 23:35:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-05-21 23:35:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 23:35:36,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-05-21 23:35:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:36,043 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 23:35:36,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-05-21 23:35:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 23:35:36,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:35:36,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 23:35:36,044 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-21 23:35:36,046 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 23:35:36,047 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:35:36,047 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:35:36,047 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:35:36,047 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:35:36,047 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:35:36,047 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:35:36,047 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:35:36,047 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-21 23:35:36,049 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-05-21 23:35:36,462 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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) [2021-05-21 23:35:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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) [2021-05-21 23:35:36,526 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:35:36,527 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-21 23:35:36,527 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 23:35:36,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 11:35:36 BasicIcfg [2021-05-21 23:35:36,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 23:35:36,533 INFO L168 Benchmark]: Toolchain (without parser) took 6690.21 ms. Allocated memory was 337.6 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 300.1 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 221.3 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:36,533 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 337.6 MB. Free memory is still 318.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:35:36,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.17 ms. Allocated memory is still 337.6 MB. Free memory was 300.0 MB in the beginning and 299.3 MB in the end (delta: 658.5 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:36,537 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.51 ms. Allocated memory is still 337.6 MB. Free memory was 299.3 MB in the beginning and 297.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:36,537 INFO L168 Benchmark]: Boogie Preprocessor took 31.30 ms. Allocated memory is still 337.6 MB. Free memory was 297.2 MB in the beginning and 295.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:36,537 INFO L168 Benchmark]: RCFGBuilder took 463.47 ms. Allocated memory is still 337.6 MB. Free memory was 295.1 MB in the beginning and 271.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:36,539 INFO L168 Benchmark]: TraceAbstraction took 5548.05 ms. Allocated memory was 337.6 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 269.9 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 193.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:36,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 337.6 MB. Free memory is still 318.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 577.17 ms. Allocated memory is still 337.6 MB. Free memory was 300.0 MB in the beginning and 299.3 MB in the end (delta: 658.5 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.51 ms. Allocated memory is still 337.6 MB. Free memory was 299.3 MB in the beginning and 297.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.30 ms. Allocated memory is still 337.6 MB. Free memory was 297.2 MB in the beginning and 295.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 463.47 ms. Allocated memory is still 337.6 MB. Free memory was 295.1 MB in the beginning and 271.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5548.05 ms. Allocated memory was 337.6 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 269.9 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 193.1 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4971.5ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 140.3ms, AutomataDifference: 1699.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 668.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 952 SDtfs, 1349 SDslu, 2907 SDs, 0 SdLazy, 284 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 244.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1130.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1005.6ms AutomataMinimizationTime, 9 MinimizatonAttempts, 1032 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.9ms SsaConstructionTime, 267.1ms SatisfiabilityAnalysisTime, 955.0ms InterpolantComputationTime, 477 NumberOfCodeBlocks, 477 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 468 ConstructedInterpolants, 0 QuantifiedInterpolants, 1364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 480.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 64.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 414.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 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! Received shutdown request...