/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:15:01,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:15:01,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:15:01,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:15:01,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-12 17:15:01,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-12 17:15:01,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-12 17:15:01,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-12 17:15:01,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-12 17:15:01,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-12 17:15:01,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-12 17:15:01,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-12 17:15:01,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-12 17:15:01,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-12 17:15:01,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-12 17:15:01,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-12 17:15:01,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-12 17:15:01,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:15:01,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:15:01,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:15:01,980 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.epf [2021-06-12 17:15:02,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:15:02,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:15:02,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:15:02,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:15:02,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:15:02,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:15:02,022 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:15:02,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:15:02,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:15:02,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:15:02,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:15:02,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:15:02,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:15:02,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:15:02,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:15:02,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:15:02,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:15:02,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:15:02,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:15:02,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:15:02,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:15:02,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:15:02,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:15:02,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:15:02,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:15:02,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:15:02,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:15:02,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:15:02,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:15:02,027 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:15:02,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:15:02,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:15:02,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:15:02,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:15:02,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:15:02,393 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:15:02,393 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:15:02,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2021-06-12 17:15:02,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79dd4fa2f/ac2ff229443e49469bd860f7f4dde90c/FLAG1c07835c1 [2021-06-12 17:15:03,217 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:15:03,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2021-06-12 17:15:03,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79dd4fa2f/ac2ff229443e49469bd860f7f4dde90c/FLAG1c07835c1 [2021-06-12 17:15:03,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79dd4fa2f/ac2ff229443e49469bd860f7f4dde90c [2021-06-12 17:15:03,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:15:03,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:15:03,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:15:03,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:15:03,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:15:03,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:15:03" (1/1) ... [2021-06-12 17:15:03,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68605407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03, skipping insertion in model container [2021-06-12 17:15:03,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:15:03" (1/1) ... [2021-06-12 17:15:03,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:15:03,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:15:03,606 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/safe004_tso.oepc.i[950,963] [2021-06-12 17:15:03,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:15:03,798 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:15:03,809 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/safe004_tso.oepc.i[950,963] [2021-06-12 17:15:03,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:15:03,913 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:15:03,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03 WrapperNode [2021-06-12 17:15:03,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:15:03,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:15:03,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:15:03,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:15:03,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03" (1/1) ... [2021-06-12 17:15:03,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03" (1/1) ... [2021-06-12 17:15:03,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:15:03,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:15:03,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:15:03,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:15:03,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03" (1/1) ... [2021-06-12 17:15:03,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03" (1/1) ... [2021-06-12 17:15:03,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03" (1/1) ... [2021-06-12 17:15:03,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03" (1/1) ... [2021-06-12 17:15:03,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03" (1/1) ... [2021-06-12 17:15:03,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03" (1/1) ... [2021-06-12 17:15:03,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03" (1/1) ... [2021-06-12 17:15:04,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:15:04,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:15:04,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:15:04,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:15:04,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03" (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 [2021-06-12 17:15:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:15:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:15:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:15:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:15:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-12 17:15:04,078 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-12 17:15:04,079 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-12 17:15:04,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-12 17:15:04,079 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-12 17:15:04,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-12 17:15:04,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:15:04,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:15:04,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:15:04,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:15:04,081 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 17:15:04,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:15:04,514 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:15:04,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:15:04 BoogieIcfgContainer [2021-06-12 17:15:04,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:15:04,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:15:04,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:15:04,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:15:04,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:15:03" (1/3) ... [2021-06-12 17:15:04,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53697f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:15:04, skipping insertion in model container [2021-06-12 17:15:04,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:03" (2/3) ... [2021-06-12 17:15:04,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53697f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:15:04, skipping insertion in model container [2021-06-12 17:15:04,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:15:04" (3/3) ... [2021-06-12 17:15:04,524 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2021-06-12 17:15:04,529 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:15:04,529 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:15:04,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:15:04,530 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:15:04,567 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,567 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,567 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,567 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,567 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,568 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,568 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,568 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,568 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,568 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,568 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,569 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,569 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,569 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,571 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,573 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,580 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,580 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,580 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,581 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,581 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,585 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,590 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,590 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,592 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,592 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,592 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,592 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:04,596 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:15:04,615 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 17:15:04,641 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:15:04,641 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:15:04,641 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:15:04,641 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:15:04,641 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:15:04,641 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:15:04,641 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:15:04,642 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:15:04,654 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-06-12 17:15:05,201 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) [2021-06-12 17:15:05,241 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) [2021-06-12 17:15:05,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 17:15:05,314 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:05,314 INFO L472 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] [2021-06-12 17:15:05,315 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:05,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:05,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1833038261, now seen corresponding path program 1 times [2021-06-12 17:15:05,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:05,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691464857] [2021-06-12 17:15:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:05,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:05,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691464857] [2021-06-12 17:15:05,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691464857] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:05,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:05,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:15:05,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729201873] [2021-06-12 17:15:05,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:15:05,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:05,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:15:05,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:15:05,853 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 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2021-06-12 17:15:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:06,391 INFO L93 Difference]: Finished difference Result 14357 states and 50008 transitions. [2021-06-12 17:15:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 17:15:06,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 [2021-06-12 17:15:06,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:06,520 INFO L225 Difference]: With dead ends: 14357 [2021-06-12 17:15:06,520 INFO L226 Difference]: Without dead ends: 3812 [2021-06-12 17:15:06,525 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 290.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:15:06,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2021-06-12 17:15:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3452. [2021-06-12 17:15:06,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3452 states, 3451 states have (on average 3.204578383077369) internal successors, (11059), 3451 states have internal predecessors, (11059), 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) [2021-06-12 17:15:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 11059 transitions. [2021-06-12 17:15:06,777 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 11059 transitions. Word has length 48 [2021-06-12 17:15:06,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:06,781 INFO L482 AbstractCegarLoop]: Abstraction has 3452 states and 11059 transitions. [2021-06-12 17:15:06,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2021-06-12 17:15:06,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 11059 transitions. [2021-06-12 17:15:06,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-12 17:15:06,795 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:06,796 INFO L472 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] [2021-06-12 17:15:06,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:15:06,796 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:06,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:06,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1414286899, now seen corresponding path program 1 times [2021-06-12 17:15:06,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:06,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578517130] [2021-06-12 17:15:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:06,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:06,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578517130] [2021-06-12 17:15:06,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578517130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:06,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:06,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:15:06,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143486199] [2021-06-12 17:15:06,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:15:06,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:06,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:15:06,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:15:06,914 INFO L87 Difference]: Start difference. First operand 3452 states and 11059 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) [2021-06-12 17:15:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:07,070 INFO L93 Difference]: Finished difference Result 4082 states and 13023 transitions. [2021-06-12 17:15:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:15:07,070 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 [2021-06-12 17:15:07,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:07,089 INFO L225 Difference]: With dead ends: 4082 [2021-06-12 17:15:07,089 INFO L226 Difference]: Without dead ends: 3110 [2021-06-12 17:15:07,090 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:15:07,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2021-06-12 17:15:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3078. [2021-06-12 17:15:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3077 states have (on average 3.178420539486513) internal successors, (9780), 3077 states have internal predecessors, (9780), 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) [2021-06-12 17:15:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 9780 transitions. [2021-06-12 17:15:07,240 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 9780 transitions. Word has length 52 [2021-06-12 17:15:07,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:07,241 INFO L482 AbstractCegarLoop]: Abstraction has 3078 states and 9780 transitions. [2021-06-12 17:15:07,241 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) [2021-06-12 17:15:07,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 9780 transitions. [2021-06-12 17:15:07,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-12 17:15:07,251 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:07,251 INFO L472 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] [2021-06-12 17:15:07,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:15:07,252 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:07,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:07,259 INFO L82 PathProgramCache]: Analyzing trace with hash 490972131, now seen corresponding path program 1 times [2021-06-12 17:15:07,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:07,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052674336] [2021-06-12 17:15:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:07,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:07,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052674336] [2021-06-12 17:15:07,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052674336] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:07,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:07,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:15:07,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16760050] [2021-06-12 17:15:07,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:15:07,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:07,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:15:07,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:15:07,431 INFO L87 Difference]: Start difference. First operand 3078 states and 9780 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2021-06-12 17:15:07,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:07,617 INFO L93 Difference]: Finished difference Result 4310 states and 13516 transitions. [2021-06-12 17:15:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 17:15:07,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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 [2021-06-12 17:15:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:07,631 INFO L225 Difference]: With dead ends: 4310 [2021-06-12 17:15:07,631 INFO L226 Difference]: Without dead ends: 2470 [2021-06-12 17:15:07,632 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:15:07,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-12 17:15:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2278. [2021-06-12 17:15:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 2277 states have (on average 3.0443566095740007) internal successors, (6932), 2277 states have internal predecessors, (6932), 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) [2021-06-12 17:15:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 6932 transitions. [2021-06-12 17:15:07,751 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 6932 transitions. Word has length 53 [2021-06-12 17:15:07,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:07,752 INFO L482 AbstractCegarLoop]: Abstraction has 2278 states and 6932 transitions. [2021-06-12 17:15:07,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2021-06-12 17:15:07,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 6932 transitions. [2021-06-12 17:15:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-12 17:15:07,757 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:07,757 INFO L472 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] [2021-06-12 17:15:07,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:15:07,757 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:07,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:07,758 INFO L82 PathProgramCache]: Analyzing trace with hash -945022826, now seen corresponding path program 1 times [2021-06-12 17:15:07,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:07,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750508237] [2021-06-12 17:15:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:07,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:07,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750508237] [2021-06-12 17:15:07,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750508237] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:07,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:07,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:15:07,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241737911] [2021-06-12 17:15:07,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:15:07,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:07,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:15:07,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:15:07,836 INFO L87 Difference]: Start difference. First operand 2278 states and 6932 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2021-06-12 17:15:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:07,969 INFO L93 Difference]: Finished difference Result 2558 states and 7766 transitions. [2021-06-12 17:15:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:15:07,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 [2021-06-12 17:15:07,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:07,976 INFO L225 Difference]: With dead ends: 2558 [2021-06-12 17:15:07,977 INFO L226 Difference]: Without dead ends: 1333 [2021-06-12 17:15:07,977 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-12 17:15:07,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-06-12 17:15:08,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1333. [2021-06-12 17:15:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 3.0022522522522523) internal successors, (3999), 1332 states have internal predecessors, (3999), 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) [2021-06-12 17:15:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 3999 transitions. [2021-06-12 17:15:08,010 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 3999 transitions. Word has length 55 [2021-06-12 17:15:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:08,011 INFO L482 AbstractCegarLoop]: Abstraction has 1333 states and 3999 transitions. [2021-06-12 17:15:08,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2021-06-12 17:15:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 3999 transitions. [2021-06-12 17:15:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-12 17:15:08,015 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:08,015 INFO L472 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] [2021-06-12 17:15:08,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:15:08,018 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:08,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:08,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2078823676, now seen corresponding path program 1 times [2021-06-12 17:15:08,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:08,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770885491] [2021-06-12 17:15:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:08,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:08,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770885491] [2021-06-12 17:15:08,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770885491] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:08,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:08,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:15:08,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795403984] [2021-06-12 17:15:08,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:15:08,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:08,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:15:08,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:15:08,114 INFO L87 Difference]: Start difference. First operand 1333 states and 3999 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2021-06-12 17:15:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:08,249 INFO L93 Difference]: Finished difference Result 1528 states and 4529 transitions. [2021-06-12 17:15:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:15:08,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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 [2021-06-12 17:15:08,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:08,256 INFO L225 Difference]: With dead ends: 1528 [2021-06-12 17:15:08,256 INFO L226 Difference]: Without dead ends: 1168 [2021-06-12 17:15:08,257 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:15:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-06-12 17:15:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2021-06-12 17:15:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 2.9511568123393315) internal successors, (3444), 1167 states have internal predecessors, (3444), 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) [2021-06-12 17:15:08,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3444 transitions. [2021-06-12 17:15:08,286 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3444 transitions. Word has length 56 [2021-06-12 17:15:08,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:08,286 INFO L482 AbstractCegarLoop]: Abstraction has 1168 states and 3444 transitions. [2021-06-12 17:15:08,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2021-06-12 17:15:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3444 transitions. [2021-06-12 17:15:08,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:15:08,289 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:08,289 INFO L472 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] [2021-06-12 17:15:08,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:15:08,289 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:08,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:08,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1611481061, now seen corresponding path program 1 times [2021-06-12 17:15:08,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:08,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235032439] [2021-06-12 17:15:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:08,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:08,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235032439] [2021-06-12 17:15:08,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235032439] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:08,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:08,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:15:08,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498732857] [2021-06-12 17:15:08,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:15:08,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:08,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:15:08,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:15:08,367 INFO L87 Difference]: Start difference. First operand 1168 states and 3444 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-06-12 17:15:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:08,469 INFO L93 Difference]: Finished difference Result 1060 states and 3024 transitions. [2021-06-12 17:15:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:15:08,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2021-06-12 17:15:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:08,473 INFO L225 Difference]: With dead ends: 1060 [2021-06-12 17:15:08,474 INFO L226 Difference]: Without dead ends: 808 [2021-06-12 17:15:08,474 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 88.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:15:08,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-06-12 17:15:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2021-06-12 17:15:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 2.799256505576208) internal successors, (2259), 807 states have internal predecessors, (2259), 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) [2021-06-12 17:15:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2259 transitions. [2021-06-12 17:15:08,492 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2259 transitions. Word has length 57 [2021-06-12 17:15:08,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:08,492 INFO L482 AbstractCegarLoop]: Abstraction has 808 states and 2259 transitions. [2021-06-12 17:15:08,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-06-12 17:15:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2259 transitions. [2021-06-12 17:15:08,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-12 17:15:08,494 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:08,494 INFO L472 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] [2021-06-12 17:15:08,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 17:15:08,494 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:08,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:08,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2015620850, now seen corresponding path program 1 times [2021-06-12 17:15:08,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:08,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691995837] [2021-06-12 17:15:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:08,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:08,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691995837] [2021-06-12 17:15:08,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691995837] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:08,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:08,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:15:08,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597534341] [2021-06-12 17:15:08,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:15:08,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:08,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:15:08,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:15:08,593 INFO L87 Difference]: Start difference. First operand 808 states and 2259 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) [2021-06-12 17:15:08,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:08,664 INFO L93 Difference]: Finished difference Result 511 states and 1368 transitions. [2021-06-12 17:15:08,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 17:15:08,664 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 [2021-06-12 17:15:08,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:08,664 INFO L225 Difference]: With dead ends: 511 [2021-06-12 17:15:08,664 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:15:08,666 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:15:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:15:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:15:08,666 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) [2021-06-12 17:15:08,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:15:08,667 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-06-12 17:15:08,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:08,667 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:15:08,667 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) [2021-06-12 17:15:08,667 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:15:08,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:15:08,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 17:15:08,669 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:15:08,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:15:08 BasicIcfg [2021-06-12 17:15:08,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:15:08,674 INFO L168 Benchmark]: Toolchain (without parser) took 5389.78 ms. Allocated memory was 201.3 MB in the beginning and 516.9 MB in the end (delta: 315.6 MB). Free memory was 164.0 MB in the beginning and 302.8 MB in the end (delta: -138.8 MB). Peak memory consumption was 177.8 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:08,675 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 201.3 MB. Free memory is still 182.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:15:08,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.18 ms. Allocated memory is still 201.3 MB. Free memory was 163.8 MB in the beginning and 162.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:08,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.56 ms. Allocated memory is still 201.3 MB. Free memory was 162.5 MB in the beginning and 160.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:08,678 INFO L168 Benchmark]: Boogie Preprocessor took 17.64 ms. Allocated memory is still 201.3 MB. Free memory was 160.5 MB in the beginning and 159.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:08,680 INFO L168 Benchmark]: RCFGBuilder took 516.85 ms. Allocated memory is still 201.3 MB. Free memory was 159.4 MB in the beginning and 135.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:08,681 INFO L168 Benchmark]: TraceAbstraction took 4152.49 ms. Allocated memory was 201.3 MB in the beginning and 516.9 MB in the end (delta: 315.6 MB). Free memory was 135.3 MB in the beginning and 302.8 MB in the end (delta: -167.5 MB). Peak memory consumption was 148.6 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:08,688 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 201.3 MB. Free memory is still 182.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 628.18 ms. Allocated memory is still 201.3 MB. Free memory was 163.8 MB in the beginning and 162.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 66.56 ms. Allocated memory is still 201.3 MB. Free memory was 162.5 MB in the beginning and 160.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.64 ms. Allocated memory is still 201.3 MB. Free memory was 160.5 MB in the beginning and 159.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 516.85 ms. Allocated memory is still 201.3 MB. Free memory was 159.4 MB in the beginning and 135.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4152.49 ms. Allocated memory was 201.3 MB in the beginning and 516.9 MB in the end (delta: 315.6 MB). Free memory was 135.3 MB in the beginning and 302.8 MB in the end (delta: -167.5 MB). Peak memory consumption was 148.6 MB. Max. memory is 8.0 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4029.1ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 147.5ms, AutomataDifference: 1549.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 559.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 714 SDtfs, 1127 SDslu, 2357 SDs, 0 SdLazy, 264 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 222.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 918.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 588.7ms AutomataMinimizationTime, 7 MinimizatonAttempts, 584 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.2ms SsaConstructionTime, 221.0ms SatisfiabilityAnalysisTime, 742.5ms InterpolantComputationTime, 379 NumberOfCodeBlocks, 379 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 1578 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...