/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 01:36:26,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 01:36:26,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 01:36:26,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 01:36:26,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 01:36:26,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 01:36:26,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 01:36:26,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 01:36:26,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 01:36:26,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 01:36:26,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 01:36:26,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 01:36:26,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 01:36:26,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 01:36:26,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 01:36:26,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 01:36:26,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 01:36:26,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 01:36:26,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 01:36:26,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 01:36:26,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 01:36:26,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 01:36:26,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 01:36:26,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 01:36:26,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 01:36:26,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 01:36:26,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 01:36:26,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 01:36:26,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 01:36:26,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 01:36:26,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 01:36:26,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 01:36:26,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 01:36:26,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 01:36:26,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 01:36:26,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 01:36:26,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-17 01:36:26,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 01:36:26,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 01:36:26,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 01:36:26,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 01:36:26,162 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 01:36:26,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 01:36:26,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 01:36:26,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 01:36:26,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 01:36:26,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 01:36:26,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 01:36:26,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 01:36:26,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 01:36:26,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 01:36:26,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 01:36:26,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 01:36:26,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 01:36:26,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 01:36:26,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 01:36:26,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 01:36:26,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 01:36:26,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 01:36:26,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 01:36:26,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 01:36:26,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 01:36:26,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 01:36:26,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 01:36:26,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 01:36:26,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 01:36:26,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 01:36:26,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 01:36:26,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 01:36:26,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 01:36:26,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 01:36:26,664 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 01:36:26,665 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-09-17 01:36:26,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3056028/730ee1e2be6a48618f4ece3556b15bcc/FLAG31220f292 [2020-09-17 01:36:27,385 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 01:36:27,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-09-17 01:36:27,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3056028/730ee1e2be6a48618f4ece3556b15bcc/FLAG31220f292 [2020-09-17 01:36:27,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3056028/730ee1e2be6a48618f4ece3556b15bcc [2020-09-17 01:36:27,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 01:36:27,669 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 01:36:27,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 01:36:27,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 01:36:27,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 01:36:27,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 01:36:27" (1/1) ... [2020-09-17 01:36:27,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20bf60a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:27, skipping insertion in model container [2020-09-17 01:36:27,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 01:36:27" (1/1) ... [2020-09-17 01:36:27,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 01:36:27,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 01:36:28,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 01:36:28,370 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 01:36:28,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 01:36:28,505 INFO L208 MainTranslator]: Completed translation [2020-09-17 01:36:28,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28 WrapperNode [2020-09-17 01:36:28,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 01:36:28,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 01:36:28,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 01:36:28,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 01:36:28,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28" (1/1) ... [2020-09-17 01:36:28,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28" (1/1) ... [2020-09-17 01:36:28,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 01:36:28,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 01:36:28,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 01:36:28,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 01:36:28,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28" (1/1) ... [2020-09-17 01:36:28,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28" (1/1) ... [2020-09-17 01:36:28,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28" (1/1) ... [2020-09-17 01:36:28,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28" (1/1) ... [2020-09-17 01:36:28,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28" (1/1) ... [2020-09-17 01:36:28,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28" (1/1) ... [2020-09-17 01:36:28,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28" (1/1) ... [2020-09-17 01:36:28,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 01:36:28,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 01:36:28,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 01:36:28,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 01:36:28,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28" (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 [2020-09-17 01:36:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 01:36:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 01:36:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 01:36:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 01:36:28,689 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 01:36:28,689 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 01:36:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 01:36:28,690 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 01:36:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 01:36:28,690 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 01:36:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-17 01:36:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-17 01:36:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 01:36:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 01:36:28,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 01:36:28,695 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 01:36:29,120 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 01:36:29,121 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 01:36:29,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 01:36:29 BoogieIcfgContainer [2020-09-17 01:36:29,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 01:36:29,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 01:36:29,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 01:36:29,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 01:36:29,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 01:36:27" (1/3) ... [2020-09-17 01:36:29,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8a7d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 01:36:29, skipping insertion in model container [2020-09-17 01:36:29,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:36:28" (2/3) ... [2020-09-17 01:36:29,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8a7d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 01:36:29, skipping insertion in model container [2020-09-17 01:36:29,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 01:36:29" (3/3) ... [2020-09-17 01:36:29,137 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-09-17 01:36:29,149 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 01:36:29,149 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 01:36:29,160 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 01:36:29,162 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 01:36:29,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,196 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,196 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,196 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,198 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,198 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,198 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,199 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,200 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,200 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,200 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,201 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,201 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,202 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,202 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,202 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,203 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,207 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,208 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,208 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,208 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,216 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,216 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,216 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,216 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,219 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,220 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,223 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,223 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:36:29,246 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-17 01:36:29,269 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 01:36:29,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 01:36:29,270 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 01:36:29,270 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 01:36:29,270 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 01:36:29,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 01:36:29,270 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 01:36:29,270 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 01:36:29,289 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-09-17 01:36:29,292 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-17 01:36:29,351 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-17 01:36:29,351 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 01:36:29,359 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-09-17 01:36:29,362 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-17 01:36:29,409 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-17 01:36:29,411 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 01:36:29,412 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-09-17 01:36:29,418 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-09-17 01:36:29,419 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 01:36:31,414 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-17 01:36:31,478 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-09-17 01:36:31,478 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-09-17 01:36:31,483 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-09-17 01:36:31,586 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-09-17 01:36:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-09-17 01:36:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 01:36:31,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:36:31,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:36:31,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:36:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:36:31,611 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-09-17 01:36:31,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:36:31,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903458161] [2020-09-17 01:36:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:36:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:36:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:36:31,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903458161] [2020-09-17 01:36:31,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:36:31,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 01:36:31,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500162726] [2020-09-17 01:36:31,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-17 01:36:31,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:36:31,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-17 01:36:31,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 01:36:31,883 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-09-17 01:36:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:36:31,962 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-09-17 01:36:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-17 01:36:31,964 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-17 01:36:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:36:32,005 INFO L225 Difference]: With dead ends: 1450 [2020-09-17 01:36:32,006 INFO L226 Difference]: Without dead ends: 1194 [2020-09-17 01:36:32,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 01:36:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-09-17 01:36:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-09-17 01:36:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-09-17 01:36:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-09-17 01:36:32,193 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-09-17 01:36:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:36:32,199 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-09-17 01:36:32,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-17 01:36:32,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-09-17 01:36:32,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 01:36:32,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:36:32,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:36:32,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 01:36:32,217 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:36:32,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:36:32,218 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-09-17 01:36:32,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:36:32,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897722282] [2020-09-17 01:36:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:36:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:36:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:36:32,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897722282] [2020-09-17 01:36:32,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:36:32,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 01:36:32,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069710617] [2020-09-17 01:36:32,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 01:36:32,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:36:32,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 01:36:32,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:36:32,451 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-09-17 01:36:32,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:36:32,507 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-09-17 01:36:32,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 01:36:32,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-17 01:36:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:36:32,518 INFO L225 Difference]: With dead ends: 1322 [2020-09-17 01:36:32,518 INFO L226 Difference]: Without dead ends: 1066 [2020-09-17 01:36:32,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:36:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-17 01:36:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-09-17 01:36:32,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-09-17 01:36:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-09-17 01:36:32,564 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-09-17 01:36:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:36:32,564 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-09-17 01:36:32,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 01:36:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-09-17 01:36:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 01:36:32,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:36:32,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:36:32,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 01:36:32,567 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:36:32,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:36:32,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 1 times [2020-09-17 01:36:32,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:36:32,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317856579] [2020-09-17 01:36:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:36:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:36:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:36:32,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317856579] [2020-09-17 01:36:32,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:36:32,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 01:36:32,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964006169] [2020-09-17 01:36:32,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 01:36:32,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:36:32,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 01:36:32,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:36:32,665 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-09-17 01:36:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:36:32,698 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-09-17 01:36:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 01:36:32,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 01:36:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:36:32,707 INFO L225 Difference]: With dead ends: 1162 [2020-09-17 01:36:32,707 INFO L226 Difference]: Without dead ends: 970 [2020-09-17 01:36:32,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:36:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-09-17 01:36:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-09-17 01:36:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-09-17 01:36:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-09-17 01:36:32,745 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-09-17 01:36:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:36:32,745 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-09-17 01:36:32,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 01:36:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-09-17 01:36:32,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 01:36:32,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:36:32,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:36:32,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 01:36:32,748 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:36:32,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:36:32,748 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 1 times [2020-09-17 01:36:32,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:36:32,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757441184] [2020-09-17 01:36:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:36:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:36:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:36:32,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757441184] [2020-09-17 01:36:32,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:36:32,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 01:36:32,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514285454] [2020-09-17 01:36:32,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 01:36:32,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:36:32,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 01:36:32,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:36:32,833 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-09-17 01:36:32,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:36:32,861 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-09-17 01:36:32,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 01:36:32,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-17 01:36:32,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:36:32,869 INFO L225 Difference]: With dead ends: 1042 [2020-09-17 01:36:32,869 INFO L226 Difference]: Without dead ends: 898 [2020-09-17 01:36:32,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:36:32,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-09-17 01:36:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-09-17 01:36:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-09-17 01:36:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-09-17 01:36:32,903 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-09-17 01:36:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:36:32,903 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-09-17 01:36:32,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 01:36:32,903 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-09-17 01:36:32,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 01:36:32,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:36:32,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:36:32,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 01:36:32,906 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:36:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:36:32,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1753289104, now seen corresponding path program 1 times [2020-09-17 01:36:32,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:36:32,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140823033] [2020-09-17 01:36:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:36:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:36:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:36:32,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140823033] [2020-09-17 01:36:32,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:36:32,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 01:36:32,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323508848] [2020-09-17 01:36:32,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 01:36:32,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:36:32,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 01:36:32,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:36:32,988 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-09-17 01:36:33,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:36:33,016 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-09-17 01:36:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 01:36:33,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-17 01:36:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:36:33,024 INFO L225 Difference]: With dead ends: 952 [2020-09-17 01:36:33,024 INFO L226 Difference]: Without dead ends: 844 [2020-09-17 01:36:33,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:36:33,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-09-17 01:36:33,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-09-17 01:36:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-09-17 01:36:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-09-17 01:36:33,055 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-09-17 01:36:33,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:36:33,055 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-09-17 01:36:33,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 01:36:33,056 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-09-17 01:36:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 01:36:33,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:36:33,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:36:33,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 01:36:33,058 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:36:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:36:33,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-09-17 01:36:33,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:36:33,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727094277] [2020-09-17 01:36:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:36:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:36:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:36:33,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727094277] [2020-09-17 01:36:33,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:36:33,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:36:33,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709978339] [2020-09-17 01:36:33,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:36:33,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:36:33,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:36:33,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:36:33,171 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-09-17 01:36:33,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:36:33,220 INFO L93 Difference]: Finished difference Result 1123 states and 3753 transitions. [2020-09-17 01:36:33,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:36:33,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-17 01:36:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:36:33,225 INFO L225 Difference]: With dead ends: 1123 [2020-09-17 01:36:33,225 INFO L226 Difference]: Without dead ends: 538 [2020-09-17 01:36:33,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-17 01:36:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-09-17 01:36:33,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2020-09-17 01:36:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-09-17 01:36:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1698 transitions. [2020-09-17 01:36:33,245 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1698 transitions. Word has length 15 [2020-09-17 01:36:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:36:33,245 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1698 transitions. [2020-09-17 01:36:33,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:36:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1698 transitions. [2020-09-17 01:36:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-17 01:36:33,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:36:33,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:36:33,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 01:36:33,248 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:36:33,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:36:33,248 INFO L82 PathProgramCache]: Analyzing trace with hash 2121425426, now seen corresponding path program 1 times [2020-09-17 01:36:33,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:36:33,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050429242] [2020-09-17 01:36:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:36:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:36:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:36:33,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050429242] [2020-09-17 01:36:33,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:36:33,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:36:33,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026141317] [2020-09-17 01:36:33,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:36:33,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:36:33,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:36:33,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:36:33,335 INFO L87 Difference]: Start difference. First operand 538 states and 1698 transitions. Second operand 5 states. [2020-09-17 01:36:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:36:33,385 INFO L93 Difference]: Finished difference Result 676 states and 2093 transitions. [2020-09-17 01:36:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:36:33,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-17 01:36:33,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:36:33,389 INFO L225 Difference]: With dead ends: 676 [2020-09-17 01:36:33,389 INFO L226 Difference]: Without dead ends: 382 [2020-09-17 01:36:33,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-17 01:36:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-09-17 01:36:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2020-09-17 01:36:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-09-17 01:36:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1116 transitions. [2020-09-17 01:36:33,403 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1116 transitions. Word has length 16 [2020-09-17 01:36:33,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:36:33,403 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 1116 transitions. [2020-09-17 01:36:33,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:36:33,403 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1116 transitions. [2020-09-17 01:36:33,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 01:36:33,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:36:33,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:36:33,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 01:36:33,405 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:36:33,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:36:33,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1339206906, now seen corresponding path program 1 times [2020-09-17 01:36:33,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:36:33,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514587195] [2020-09-17 01:36:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:36:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:36:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:36:33,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514587195] [2020-09-17 01:36:33,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:36:33,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:36:33,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311078594] [2020-09-17 01:36:33,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:36:33,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:36:33,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:36:33,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:36:33,484 INFO L87 Difference]: Start difference. First operand 382 states and 1116 transitions. Second operand 5 states. [2020-09-17 01:36:33,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:36:33,529 INFO L93 Difference]: Finished difference Result 466 states and 1344 transitions. [2020-09-17 01:36:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:36:33,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 01:36:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:36:33,531 INFO L225 Difference]: With dead ends: 466 [2020-09-17 01:36:33,531 INFO L226 Difference]: Without dead ends: 154 [2020-09-17 01:36:33,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-17 01:36:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-17 01:36:33,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-17 01:36:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-17 01:36:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-09-17 01:36:33,537 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-09-17 01:36:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:36:33,538 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-09-17 01:36:33,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:36:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-09-17 01:36:33,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 01:36:33,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:36:33,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:36:33,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 01:36:33,539 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:36:33,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:36:33,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-09-17 01:36:33,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:36:33,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4110565] [2020-09-17 01:36:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:36:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:36:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:36:33,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4110565] [2020-09-17 01:36:33,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:36:33,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:36:33,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538112694] [2020-09-17 01:36:33,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:36:33,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:36:33,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:36:33,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:36:33,619 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-09-17 01:36:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:36:33,652 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-09-17 01:36:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:36:33,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-17 01:36:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:36:33,653 INFO L225 Difference]: With dead ends: 130 [2020-09-17 01:36:33,654 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 01:36:33,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-17 01:36:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 01:36:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 01:36:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 01:36:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 01:36:33,655 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-17 01:36:33,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:36:33,655 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 01:36:33,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:36:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 01:36:33,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 01:36:33,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 01:36:33,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 01:36:33 BasicIcfg [2020-09-17 01:36:33,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 01:36:33,663 INFO L168 Benchmark]: Toolchain (without parser) took 6001.79 ms. Allocated memory was 138.4 MB in the beginning and 305.7 MB in the end (delta: 167.2 MB). Free memory was 100.0 MB in the beginning and 181.3 MB in the end (delta: -81.3 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. [2020-09-17 01:36:33,664 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-17 01:36:33,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 833.49 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.3 MB in the beginning and 156.9 MB in the end (delta: -57.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-17 01:36:33,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.86 ms. Allocated memory is still 201.3 MB. Free memory was 156.9 MB in the beginning and 154.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-17 01:36:33,667 INFO L168 Benchmark]: Boogie Preprocessor took 39.90 ms. Allocated memory is still 201.3 MB. Free memory was 154.9 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-17 01:36:33,667 INFO L168 Benchmark]: RCFGBuilder took 518.89 ms. Allocated memory is still 201.3 MB. Free memory was 153.5 MB in the beginning and 128.4 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-17 01:36:33,668 INFO L168 Benchmark]: TraceAbstraction took 4532.76 ms. Allocated memory was 201.3 MB in the beginning and 305.7 MB in the end (delta: 104.3 MB). Free memory was 127.8 MB in the beginning and 181.3 MB in the end (delta: -53.6 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-09-17 01:36:33,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 833.49 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.3 MB in the beginning and 156.9 MB in the end (delta: -57.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.86 ms. Allocated memory is still 201.3 MB. Free memory was 156.9 MB in the beginning and 154.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.90 ms. Allocated memory is still 201.3 MB. Free memory was 154.9 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 518.89 ms. Allocated memory is still 201.3 MB. Free memory was 153.5 MB in the beginning and 128.4 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4532.76 ms. Allocated memory was 201.3 MB in the beginning and 305.7 MB in the end (delta: 104.3 MB). Free memory was 127.8 MB in the beginning and 181.3 MB in the end (delta: -53.6 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1045 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 263 SDtfs, 283 SDslu, 370 SDs, 0 SdLazy, 63 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 4689 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...