/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 00:29:26,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 00:29:26,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 00:29:26,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 00:29:26,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 00:29:26,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 00:29:26,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 00:29:26,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 00:29:26,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 00:29:26,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 00:29:26,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 00:29:26,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 00:29:26,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 00:29:26,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 00:29:26,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 00:29:26,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 00:29:26,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 00:29:26,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 00:29:26,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 00:29:26,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 00:29:26,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 00:29:26,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 00:29:26,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 00:29:26,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 00:29:26,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 00:29:26,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 00:29:26,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 00:29:26,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 00:29:26,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 00:29:26,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 00:29:26,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 00:29:26,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 00:29:26,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 00:29:26,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 00:29:26,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 00:29:26,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 00:29:26,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 00:29:26,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 00:29:26,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 00:29:26,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 00:29:26,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 00:29:26,422 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 00:29:26,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 00:29:26,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 00:29:26,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 00:29:26,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 00:29:26,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 00:29:26,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 00:29:26,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 00:29:26,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 00:29:26,425 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 00:29:26,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 00:29:26,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 00:29:26,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 00:29:26,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 00:29:26,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 00:29:26,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 00:29:26,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 00:29:26,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:29:26,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 00:29:26,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 00:29:26,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 00:29:26,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 00:29:26,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 00:29:26,427 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 00:29:26,427 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 00:29:26,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 00:29:26,428 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 00:29:26,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 00:29:26,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 00:29:26,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 00:29:26,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 00:29:26,948 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 00:29:26,950 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2020-09-18 00:29:27,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17215b5f/499de0be21254374a7a807dc2f5cc65a/FLAGc9425ce86 [2020-09-18 00:29:27,692 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 00:29:27,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2020-09-18 00:29:27,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17215b5f/499de0be21254374a7a807dc2f5cc65a/FLAGc9425ce86 [2020-09-18 00:29:27,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17215b5f/499de0be21254374a7a807dc2f5cc65a [2020-09-18 00:29:27,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 00:29:27,975 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 00:29:27,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 00:29:27,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 00:29:27,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 00:29:27,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:29:27" (1/1) ... [2020-09-18 00:29:27,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ece116e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:27, skipping insertion in model container [2020-09-18 00:29:27,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:29:27" (1/1) ... [2020-09-18 00:29:27,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 00:29:28,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 00:29:28,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:29:28,645 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 00:29:28,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:29:28,785 INFO L208 MainTranslator]: Completed translation [2020-09-18 00:29:28,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28 WrapperNode [2020-09-18 00:29:28,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 00:29:28,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 00:29:28,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 00:29:28,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 00:29:28,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28" (1/1) ... [2020-09-18 00:29:28,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28" (1/1) ... [2020-09-18 00:29:28,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 00:29:28,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 00:29:28,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 00:29:28,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 00:29:28,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28" (1/1) ... [2020-09-18 00:29:28,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28" (1/1) ... [2020-09-18 00:29:28,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28" (1/1) ... [2020-09-18 00:29:28,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28" (1/1) ... [2020-09-18 00:29:28,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28" (1/1) ... [2020-09-18 00:29:28,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28" (1/1) ... [2020-09-18 00:29:28,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28" (1/1) ... [2020-09-18 00:29:28,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 00:29:28,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 00:29:28,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 00:29:28,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 00:29:28,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28" (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 [2020-09-18 00:29:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 00:29:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 00:29:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 00:29:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 00:29:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 00:29:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 00:29:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 00:29:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 00:29:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 00:29:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 00:29:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 00:29:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 00:29:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 00:29:28,958 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 00:29:29,361 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 00:29:29,362 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 00:29:29,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:29:29 BoogieIcfgContainer [2020-09-18 00:29:29,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 00:29:29,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 00:29:29,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 00:29:29,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 00:29:29,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:29:27" (1/3) ... [2020-09-18 00:29:29,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9f8964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:29:29, skipping insertion in model container [2020-09-18 00:29:29,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:28" (2/3) ... [2020-09-18 00:29:29,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9f8964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:29:29, skipping insertion in model container [2020-09-18 00:29:29,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:29:29" (3/3) ... [2020-09-18 00:29:29,378 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc.i [2020-09-18 00:29:29,390 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 00:29:29,391 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 00:29:29,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 00:29:29,403 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 00:29:29,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,435 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,436 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,438 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,439 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,444 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,445 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,445 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,445 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,455 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,456 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,459 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,460 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,460 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,460 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:29:29,482 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 00:29:29,507 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 00:29:29,507 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 00:29:29,507 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 00:29:29,507 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 00:29:29,508 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 00:29:29,508 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 00:29:29,508 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 00:29:29,508 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 00:29:29,527 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-18 00:29:29,529 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-18 00:29:29,580 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-18 00:29:29,580 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:29:29,587 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-18 00:29:29,590 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-18 00:29:29,611 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-18 00:29:29,611 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:29:29,612 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-18 00:29:29,614 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-09-18 00:29:29,616 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 00:29:30,786 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-18 00:29:31,086 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-09-18 00:29:31,087 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-09-18 00:29:31,092 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-18 00:29:31,116 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-09-18 00:29:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-09-18 00:29:31,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 00:29:31,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:31,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:31,129 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:31,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:31,136 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-09-18 00:29:31,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:31,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595968402] [2020-09-18 00:29:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:31,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595968402] [2020-09-18 00:29:31,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:31,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:29:31,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2125300722] [2020-09-18 00:29:31,477 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:31,481 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:31,500 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 00:29:31,501 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:31,503 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:29:31,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:29:31,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:31,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:29:31,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:31,527 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-09-18 00:29:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:31,565 INFO L93 Difference]: Finished difference Result 222 states and 615 transitions. [2020-09-18 00:29:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:29:31,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 00:29:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:31,587 INFO L225 Difference]: With dead ends: 222 [2020-09-18 00:29:31,587 INFO L226 Difference]: Without dead ends: 174 [2020-09-18 00:29:31,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:31,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-18 00:29:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-18 00:29:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-18 00:29:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 463 transitions. [2020-09-18 00:29:31,662 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 463 transitions. Word has length 8 [2020-09-18 00:29:31,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:31,664 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 463 transitions. [2020-09-18 00:29:31,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:29:31,664 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 463 transitions. [2020-09-18 00:29:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 00:29:31,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:31,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:31,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 00:29:31,667 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:31,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:31,667 INFO L82 PathProgramCache]: Analyzing trace with hash -273417231, now seen corresponding path program 1 times [2020-09-18 00:29:31,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:31,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583554664] [2020-09-18 00:29:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:31,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583554664] [2020-09-18 00:29:31,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:31,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:29:31,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1508545143] [2020-09-18 00:29:31,771 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:31,773 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:31,779 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-18 00:29:31,783 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:31,846 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:29:31,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:29:31,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:31,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:29:31,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:29:31,849 INFO L87 Difference]: Start difference. First operand 174 states and 463 transitions. Second operand 4 states. [2020-09-18 00:29:31,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:31,880 INFO L93 Difference]: Finished difference Result 240 states and 615 transitions. [2020-09-18 00:29:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:29:31,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-18 00:29:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:31,883 INFO L225 Difference]: With dead ends: 240 [2020-09-18 00:29:31,883 INFO L226 Difference]: Without dead ends: 138 [2020-09-18 00:29:31,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:29:31,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-18 00:29:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-18 00:29:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-18 00:29:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 351 transitions. [2020-09-18 00:29:31,901 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 351 transitions. Word has length 9 [2020-09-18 00:29:31,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:31,902 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 351 transitions. [2020-09-18 00:29:31,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:29:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 351 transitions. [2020-09-18 00:29:31,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 00:29:31,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:31,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:31,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 00:29:31,904 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:31,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:31,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1925064459, now seen corresponding path program 1 times [2020-09-18 00:29:31,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:31,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686633757] [2020-09-18 00:29:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:31,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686633757] [2020-09-18 00:29:31,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:31,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:29:31,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2070774886] [2020-09-18 00:29:31,980 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:31,981 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:31,983 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-18 00:29:31,983 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:31,994 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:29:31,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:29:31,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:31,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:29:31,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:31,995 INFO L87 Difference]: Start difference. First operand 138 states and 351 transitions. Second operand 3 states. [2020-09-18 00:29:32,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:32,002 INFO L93 Difference]: Finished difference Result 132 states and 332 transitions. [2020-09-18 00:29:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:29:32,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-18 00:29:32,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:32,005 INFO L225 Difference]: With dead ends: 132 [2020-09-18 00:29:32,005 INFO L226 Difference]: Without dead ends: 132 [2020-09-18 00:29:32,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-18 00:29:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-09-18 00:29:32,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-18 00:29:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-09-18 00:29:32,019 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 10 [2020-09-18 00:29:32,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:32,019 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-09-18 00:29:32,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:29:32,020 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-09-18 00:29:32,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:29:32,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:32,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:32,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 00:29:32,022 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:32,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:32,022 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 1 times [2020-09-18 00:29:32,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:32,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568384604] [2020-09-18 00:29:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:32,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568384604] [2020-09-18 00:29:32,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:32,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:29:32,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1774999701] [2020-09-18 00:29:32,086 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:32,088 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:32,090 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-09-18 00:29:32,091 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:32,145 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:29:32,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:29:32,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:32,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:29:32,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:29:32,147 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 4 states. [2020-09-18 00:29:32,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:32,176 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-09-18 00:29:32,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:29:32,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 00:29:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:32,177 INFO L225 Difference]: With dead ends: 144 [2020-09-18 00:29:32,178 INFO L226 Difference]: Without dead ends: 60 [2020-09-18 00:29:32,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:29:32,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-18 00:29:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-18 00:29:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-18 00:29:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-09-18 00:29:32,190 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-09-18 00:29:32,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:32,193 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-09-18 00:29:32,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:29:32,194 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-09-18 00:29:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 00:29:32,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:32,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:32,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 00:29:32,195 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:32,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-09-18 00:29:32,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:32,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616563021] [2020-09-18 00:29:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:32,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616563021] [2020-09-18 00:29:32,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:32,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:29:32,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [757248684] [2020-09-18 00:29:32,319 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:32,320 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:32,323 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-09-18 00:29:32,323 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:32,350 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:29:32,378 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:29:32,395 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:29:32,411 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:29:32,417 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2315#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-18 00:29:32,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 00:29:32,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:32,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 00:29:32,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 00:29:32,419 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 5 states. [2020-09-18 00:29:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:32,512 INFO L93 Difference]: Finished difference Result 59 states and 111 transitions. [2020-09-18 00:29:32,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 00:29:32,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-18 00:29:32,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:32,516 INFO L225 Difference]: With dead ends: 59 [2020-09-18 00:29:32,516 INFO L226 Difference]: Without dead ends: 38 [2020-09-18 00:29:32,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-18 00:29:32,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-18 00:29:32,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-18 00:29:32,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-18 00:29:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-09-18 00:29:32,528 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 12 [2020-09-18 00:29:32,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:32,528 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-09-18 00:29:32,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 00:29:32,529 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-09-18 00:29:32,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 00:29:32,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:32,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:32,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 00:29:32,530 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:32,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:32,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-09-18 00:29:32,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:32,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279874312] [2020-09-18 00:29:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:32,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279874312] [2020-09-18 00:29:32,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:32,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 00:29:32,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [514724901] [2020-09-18 00:29:32,652 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:32,654 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:32,657 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-09-18 00:29:32,657 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:32,666 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:29:32,701 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2461#(not (= 3 ~__unbuffered_cnt~0)), 2462#(not (= ~__unbuffered_cnt~0 2)), 2463#(not (= ~__unbuffered_cnt~0 1))] [2020-09-18 00:29:32,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-18 00:29:32,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:32,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-18 00:29:32,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-18 00:29:32,703 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 9 states. [2020-09-18 00:29:32,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:32,773 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-09-18 00:29:32,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 00:29:32,773 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-09-18 00:29:32,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:32,774 INFO L225 Difference]: With dead ends: 35 [2020-09-18 00:29:32,774 INFO L226 Difference]: Without dead ends: 29 [2020-09-18 00:29:32,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-18 00:29:32,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-18 00:29:32,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-18 00:29:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-18 00:29:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-09-18 00:29:32,778 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-09-18 00:29:32,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:32,778 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-09-18 00:29:32,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-18 00:29:32,778 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-09-18 00:29:32,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-18 00:29:32,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:29:32,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:29:32,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 00:29:32,780 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:29:32,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:29:32,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-09-18 00:29:32,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:29:32,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404698413] [2020-09-18 00:29:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:29:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:29:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 00:29:32,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404698413] [2020-09-18 00:29:32,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:29:32,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:29:32,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1530561309] [2020-09-18 00:29:32,849 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:29:32,852 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:29:32,856 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-09-18 00:29:32,857 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:29:32,864 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:29:32,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:29:32,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:29:32,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:29:32,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:32,865 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-09-18 00:29:32,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:29:32,872 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-09-18 00:29:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:29:32,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-18 00:29:32,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:29:32,874 INFO L225 Difference]: With dead ends: 28 [2020-09-18 00:29:32,874 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 00:29:32,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:29:32,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 00:29:32,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 00:29:32,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 00:29:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 00:29:32,876 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-18 00:29:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:29:32,877 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 00:29:32,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:29:32,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 00:29:32,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 00:29:32,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 00:29:32,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:29:32 BasicIcfg [2020-09-18 00:29:32,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 00:29:32,899 INFO L168 Benchmark]: Toolchain (without parser) took 4927.91 ms. Allocated memory was 141.0 MB in the beginning and 246.9 MB in the end (delta: 105.9 MB). Free memory was 103.2 MB in the beginning and 170.3 MB in the end (delta: -67.2 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:32,901 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 00:29:32,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 809.90 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 162.9 MB in the end (delta: -60.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:32,904 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.29 ms. Allocated memory is still 205.0 MB. Free memory was 162.9 MB in the beginning and 160.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:32,905 INFO L168 Benchmark]: Boogie Preprocessor took 32.52 ms. Allocated memory is still 205.0 MB. Free memory was 160.9 MB in the beginning and 159.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:32,906 INFO L168 Benchmark]: RCFGBuilder took 490.23 ms. Allocated memory is still 205.0 MB. Free memory was 159.6 MB in the beginning and 137.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:32,908 INFO L168 Benchmark]: TraceAbstraction took 3525.17 ms. Allocated memory was 205.0 MB in the beginning and 246.9 MB in the end (delta: 41.9 MB). Free memory was 137.0 MB in the beginning and 170.3 MB in the end (delta: -33.3 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. [2020-09-18 00:29:32,917 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 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 809.90 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 162.9 MB in the end (delta: -60.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.29 ms. Allocated memory is still 205.0 MB. Free memory was 162.9 MB in the beginning and 160.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.52 ms. Allocated memory is still 205.0 MB. Free memory was 160.9 MB in the beginning and 159.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.23 ms. Allocated memory is still 205.0 MB. Free memory was 159.6 MB in the beginning and 137.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3525.17 ms. Allocated memory was 205.0 MB in the beginning and 246.9 MB in the end (delta: 41.9 MB). Free memory was 137.0 MB in the beginning and 170.3 MB in the end (delta: -33.3 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 606 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 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 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 113 SDtfs, 88 SDslu, 126 SDs, 0 SdLazy, 101 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 2391 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...