/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/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 00:02:47,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 00:02:47,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 00:02:47,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 00:02:47,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 00:02:47,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 00:02:47,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 00:02:47,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 00:02:47,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 00:02:47,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 00:02:47,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 00:02:47,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 00:02:47,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 00:02:47,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 00:02:47,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 00:02:47,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 00:02:47,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 00:02:47,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 00:02:47,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 00:02:47,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 00:02:47,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 00:02:47,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 00:02:47,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 00:02:47,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 00:02:47,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 00:02:47,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 00:02:47,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 00:02:47,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 00:02:47,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 00:02:47,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 00:02:47,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 00:02:47,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 00:02:47,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 00:02:47,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 00:02:47,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 00:02:47,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 00:02:47,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-16 00:02:47,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 00:02:47,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 00:02:47,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 00:02:47,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 00:02:47,620 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 00:02:47,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 00:02:47,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 00:02:47,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 00:02:47,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 00:02:47,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 00:02:47,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 00:02:47,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 00:02:47,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 00:02:47,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 00:02:47,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 00:02:47,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 00:02:47,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 00:02:47,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 00:02:47,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 00:02:47,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 00:02:47,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 00:02:47,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 00:02:47,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 00:02:47,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 00:02:47,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 00:02:47,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 00:02:47,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 00:02:47,627 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 00:02:47,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 00:02:47,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 00:02:47,627 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 00:02:48,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 00:02:48,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 00:02:48,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 00:02:48,100 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 00:02:48,101 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 00:02:48,102 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-09-16 00:02:48,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3151e0195/2268a87407974c39af81358e78a0fd40/FLAG8aa67cc4b [2020-09-16 00:02:48,822 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 00:02:48,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-09-16 00:02:48,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3151e0195/2268a87407974c39af81358e78a0fd40/FLAG8aa67cc4b [2020-09-16 00:02:49,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3151e0195/2268a87407974c39af81358e78a0fd40 [2020-09-16 00:02:49,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 00:02:49,049 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 00:02:49,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 00:02:49,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 00:02:49,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 00:02:49,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:02:49" (1/1) ... [2020-09-16 00:02:49,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b57fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49, skipping insertion in model container [2020-09-16 00:02:49,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:02:49" (1/1) ... [2020-09-16 00:02:49,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 00:02:49,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 00:02:49,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:02:49,640 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 00:02:49,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:02:49,805 INFO L208 MainTranslator]: Completed translation [2020-09-16 00:02:49,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49 WrapperNode [2020-09-16 00:02:49,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 00:02:49,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 00:02:49,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 00:02:49,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 00:02:49,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49" (1/1) ... [2020-09-16 00:02:49,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49" (1/1) ... [2020-09-16 00:02:49,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 00:02:49,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 00:02:49,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 00:02:49,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 00:02:49,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49" (1/1) ... [2020-09-16 00:02:49,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49" (1/1) ... [2020-09-16 00:02:49,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49" (1/1) ... [2020-09-16 00:02:49,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49" (1/1) ... [2020-09-16 00:02:49,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49" (1/1) ... [2020-09-16 00:02:49,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49" (1/1) ... [2020-09-16 00:02:49,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49" (1/1) ... [2020-09-16 00:02:49,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 00:02:49,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 00:02:49,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 00:02:49,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 00:02:49,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 00:02:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 00:02:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 00:02:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 00:02:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 00:02:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 00:02:49,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 00:02:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 00:02:49,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 00:02:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 00:02:49,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 00:02:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 00:02:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 00:02:49,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 00:02:49,999 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 00:02:50,410 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 00:02:50,410 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 00:02:50,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:02:50 BoogieIcfgContainer [2020-09-16 00:02:50,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 00:02:50,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 00:02:50,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 00:02:50,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 00:02:50,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:02:49" (1/3) ... [2020-09-16 00:02:50,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ccf050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:02:50, skipping insertion in model container [2020-09-16 00:02:50,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:02:49" (2/3) ... [2020-09-16 00:02:50,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ccf050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:02:50, skipping insertion in model container [2020-09-16 00:02:50,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:02:50" (3/3) ... [2020-09-16 00:02:50,426 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-09-16 00:02:50,439 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 00:02:50,439 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 00:02:50,450 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 00:02:50,451 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 00:02:50,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,484 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,484 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,485 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,485 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,486 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,486 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,486 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,486 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,488 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,488 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,493 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,494 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,504 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,511 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:02:50,535 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 00:02:50,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 00:02:50,564 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 00:02:50,564 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 00:02:50,564 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 00:02:50,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 00:02:50,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 00:02:50,565 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 00:02:50,565 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 00:02:50,583 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-16 00:02:50,585 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-16 00:02:50,637 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-16 00:02:50,637 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:02:50,644 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 45 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. [2020-09-16 00:02:50,647 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-16 00:02:50,668 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-16 00:02:50,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:02:50,669 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 45 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. [2020-09-16 00:02:50,671 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-16 00:02:50,673 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 00:02:51,990 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-16 00:02:52,124 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-09-16 00:02:52,125 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-16 00:02:52,131 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-16 00:02:52,176 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-09-16 00:02:52,179 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-09-16 00:02:52,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 00:02:52,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:52,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:52,195 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:52,203 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-09-16 00:02:52,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:52,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466758349] [2020-09-16 00:02:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:52,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466758349] [2020-09-16 00:02:52,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:52,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:02:52,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [635063103] [2020-09-16 00:02:52,461 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:52,467 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:52,490 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 00:02:52,490 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:52,498 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:52,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-16 00:02:52,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:52,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-16 00:02:52,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 00:02:52,518 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-09-16 00:02:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:52,541 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-09-16 00:02:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-16 00:02:52,544 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-16 00:02:52,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:52,563 INFO L225 Difference]: With dead ends: 274 [2020-09-16 00:02:52,563 INFO L226 Difference]: Without dead ends: 226 [2020-09-16 00:02:52,565 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 [2020-09-16 00:02:52,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-16 00:02:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-16 00:02:52,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-16 00:02:52,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-09-16 00:02:52,645 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-09-16 00:02:52,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:52,646 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-09-16 00:02:52,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-16 00:02:52,647 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-09-16 00:02:52,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 00:02:52,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:52,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:52,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 00:02:52,654 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:52,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:52,655 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-09-16 00:02:52,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:52,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721231927] [2020-09-16 00:02:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:52,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721231927] [2020-09-16 00:02:52,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:52,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:02:52,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [145744271] [2020-09-16 00:02:52,812 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:52,812 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:52,814 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-16 00:02:52,814 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:52,815 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:52,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:02:52,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:52,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:02:52,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:02:52,818 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-09-16 00:02:52,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:52,858 INFO L93 Difference]: Finished difference Result 262 states and 700 transitions. [2020-09-16 00:02:52,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:02:52,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 00:02:52,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:52,861 INFO L225 Difference]: With dead ends: 262 [2020-09-16 00:02:52,862 INFO L226 Difference]: Without dead ends: 214 [2020-09-16 00:02:52,863 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 [2020-09-16 00:02:52,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-16 00:02:52,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-16 00:02:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-16 00:02:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 590 transitions. [2020-09-16 00:02:52,886 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 590 transitions. Word has length 9 [2020-09-16 00:02:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:52,887 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 590 transitions. [2020-09-16 00:02:52,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:02:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 590 transitions. [2020-09-16 00:02:52,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 00:02:52,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:52,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:52,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 00:02:52,889 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:52,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:52,890 INFO L82 PathProgramCache]: Analyzing trace with hash 984763373, now seen corresponding path program 1 times [2020-09-16 00:02:52,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:52,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309233746] [2020-09-16 00:02:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:53,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309233746] [2020-09-16 00:02:53,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:53,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:02:53,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1745864059] [2020-09-16 00:02:53,006 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:53,007 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:53,009 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-09-16 00:02:53,009 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:53,059 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:53,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:02:53,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:53,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:02:53,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:02:53,061 INFO L87 Difference]: Start difference. First operand 214 states and 590 transitions. Second operand 5 states. [2020-09-16 00:02:53,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:53,127 INFO L93 Difference]: Finished difference Result 232 states and 614 transitions. [2020-09-16 00:02:53,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:02:53,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-16 00:02:53,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:53,130 INFO L225 Difference]: With dead ends: 232 [2020-09-16 00:02:53,130 INFO L226 Difference]: Without dead ends: 196 [2020-09-16 00:02:53,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:02:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-16 00:02:53,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-09-16 00:02:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-16 00:02:53,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-09-16 00:02:53,148 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-09-16 00:02:53,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:53,148 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-09-16 00:02:53,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:02:53,148 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-09-16 00:02:53,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 00:02:53,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:53,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:53,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 00:02:53,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:53,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:53,151 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-09-16 00:02:53,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:53,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004544467] [2020-09-16 00:02:53,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:53,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004544467] [2020-09-16 00:02:53,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:53,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:02:53,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1306761276] [2020-09-16 00:02:53,264 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:53,266 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:53,268 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-09-16 00:02:53,268 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:53,310 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:53,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 00:02:53,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:53,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 00:02:53,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 00:02:53,312 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 6 states. [2020-09-16 00:02:53,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:53,440 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-09-16 00:02:53,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 00:02:53,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-09-16 00:02:53,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:53,442 INFO L225 Difference]: With dead ends: 255 [2020-09-16 00:02:53,442 INFO L226 Difference]: Without dead ends: 150 [2020-09-16 00:02:53,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-16 00:02:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-16 00:02:53,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-16 00:02:53,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-16 00:02:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-09-16 00:02:53,453 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-09-16 00:02:53,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:53,453 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-09-16 00:02:53,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 00:02:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-09-16 00:02:53,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 00:02:53,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:53,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:53,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 00:02:53,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:53,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:53,456 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-09-16 00:02:53,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:53,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505795289] [2020-09-16 00:02:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:53,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505795289] [2020-09-16 00:02:53,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:53,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:02:53,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1892392478] [2020-09-16 00:02:53,567 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:53,569 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:53,576 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-09-16 00:02:53,577 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:53,631 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:53,698 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:53,725 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:53,750 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:53,780 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:53,806 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3259#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-16 00:02:53,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:02:53,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:53,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:02:53,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:02:53,807 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 5 states. [2020-09-16 00:02:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:53,897 INFO L93 Difference]: Finished difference Result 128 states and 285 transitions. [2020-09-16 00:02:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:02:53,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-16 00:02:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:53,899 INFO L225 Difference]: With dead ends: 128 [2020-09-16 00:02:53,899 INFO L226 Difference]: Without dead ends: 92 [2020-09-16 00:02:53,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:02:53,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-16 00:02:53,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-16 00:02:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-16 00:02:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-09-16 00:02:53,905 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 12 [2020-09-16 00:02:53,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:53,906 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-09-16 00:02:53,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:02:53,906 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-09-16 00:02:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 00:02:53,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:53,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:53,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 00:02:53,909 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:53,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:53,910 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-09-16 00:02:53,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:53,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917301926] [2020-09-16 00:02:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:54,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917301926] [2020-09-16 00:02:54,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:54,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:02:54,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1912255138] [2020-09-16 00:02:54,046 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:54,048 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:54,051 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-09-16 00:02:54,051 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:54,056 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:54,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:02:54,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:54,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:02:54,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:02:54,057 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-09-16 00:02:54,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:54,079 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-09-16 00:02:54,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:02:54,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-16 00:02:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:54,081 INFO L225 Difference]: With dead ends: 120 [2020-09-16 00:02:54,081 INFO L226 Difference]: Without dead ends: 94 [2020-09-16 00:02:54,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:02:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-16 00:02:54,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-16 00:02:54,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-16 00:02:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-09-16 00:02:54,086 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-09-16 00:02:54,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:54,086 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-09-16 00:02:54,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:02:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-09-16 00:02:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 00:02:54,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:54,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:54,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 00:02:54,088 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:54,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-09-16 00:02:54,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:54,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037172405] [2020-09-16 00:02:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:54,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037172405] [2020-09-16 00:02:54,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:54,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:02:54,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1480330685] [2020-09-16 00:02:54,169 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:54,171 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:54,177 INFO L274 McrAutomatonBuilder]: Finished intersection with 44 states and 79 transitions. [2020-09-16 00:02:54,177 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:54,261 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:02:54,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:02:54,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:54,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:02:54,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:02:54,262 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-09-16 00:02:54,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:54,295 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-09-16 00:02:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:02:54,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-16 00:02:54,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:54,296 INFO L225 Difference]: With dead ends: 113 [2020-09-16 00:02:54,296 INFO L226 Difference]: Without dead ends: 70 [2020-09-16 00:02:54,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:02:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-16 00:02:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-09-16 00:02:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-16 00:02:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-09-16 00:02:54,300 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-09-16 00:02:54,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:54,301 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-09-16 00:02:54,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:02:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-09-16 00:02:54,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 00:02:54,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:02:54,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:02:54,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 00:02:54,303 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:02:54,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:02:54,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-09-16 00:02:54,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:02:54,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988001529] [2020-09-16 00:02:54,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:02:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:02:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:02:54,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988001529] [2020-09-16 00:02:54,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:02:54,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 00:02:54,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1251202051] [2020-09-16 00:02:54,385 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:02:54,387 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:02:54,391 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 63 transitions. [2020-09-16 00:02:54,392 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:02:54,399 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:02:54,462 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4148#(not (= 3 ~__unbuffered_cnt~0)), 4149#(not (= ~__unbuffered_cnt~0 2)), 4150#(not (= ~__unbuffered_cnt~0 1)), 4151#(<= ~__unbuffered_cnt~0 0)] [2020-09-16 00:02:54,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-16 00:02:54,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:02:54,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-16 00:02:54,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-16 00:02:54,464 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 10 states. [2020-09-16 00:02:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:02:54,502 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-09-16 00:02:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 00:02:54,502 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-16 00:02:54,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:02:54,502 INFO L225 Difference]: With dead ends: 58 [2020-09-16 00:02:54,502 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 00:02:54,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-16 00:02:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 00:02:54,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 00:02:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 00:02:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 00:02:54,504 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-09-16 00:02:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:02:54,504 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 00:02:54,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-16 00:02:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 00:02:54,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 00:02:54,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 00:02:54,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:02:54 BasicIcfg [2020-09-16 00:02:54,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 00:02:54,512 INFO L168 Benchmark]: Toolchain (without parser) took 5467.33 ms. Allocated memory was 138.9 MB in the beginning and 249.6 MB in the end (delta: 110.6 MB). Free memory was 100.7 MB in the beginning and 135.7 MB in the end (delta: -34.9 MB). Peak memory consumption was 75.7 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:54,513 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-16 00:02:54,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.70 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.1 MB in the beginning and 161.3 MB in the end (delta: -61.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:54,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.77 ms. Allocated memory is still 203.4 MB. Free memory was 161.3 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:54,516 INFO L168 Benchmark]: Boogie Preprocessor took 30.81 ms. Allocated memory is still 203.4 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:54,516 INFO L168 Benchmark]: RCFGBuilder took 516.66 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 136.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:54,517 INFO L168 Benchmark]: TraceAbstraction took 4092.57 ms. Allocated memory was 203.4 MB in the beginning and 249.6 MB in the end (delta: 46.1 MB). Free memory was 135.4 MB in the beginning and 135.7 MB in the end (delta: -257.1 kB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2020-09-16 00:02:54,521 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.70 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.1 MB in the beginning and 161.3 MB in the end (delta: -61.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.77 ms. Allocated memory is still 203.4 MB. Free memory was 161.3 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.81 ms. Allocated memory is still 203.4 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 516.66 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 136.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4092.57 ms. Allocated memory was 203.4 MB in the beginning and 249.6 MB in the end (delta: 46.1 MB). Free memory was 135.4 MB in the beginning and 135.7 MB in the end (delta: -257.1 kB). Peak memory consumption was 45.9 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, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 588 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 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: 3.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 161 SDtfs, 188 SDslu, 290 SDs, 0 SdLazy, 150 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 83 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 3049 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...