/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_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:37:08,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:37:08,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:37:08,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:37:08,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:37:08,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:37:08,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:37:08,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:37:08,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:37:08,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:37:08,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:37:08,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:37:08,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:37:08,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:37:08,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:37:08,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:37:08,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:37:08,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:37:08,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:37:08,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:37:08,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:37:08,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:37:08,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:37:08,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:37:08,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:37:08,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:37:08,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:37:08,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:37:08,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:37:08,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:37:08,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:37:08,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:37:08,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:37:08,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:37:08,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:37:08,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:37:08,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:37:08,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:37:08,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:37:08,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:37:08,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:37:08,519 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 [2020-10-16 13:37:08,540 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:37:08,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:37:08,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:37:08,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:37:08,542 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:37:08,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:37:08,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:37:08,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:37:08,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:37:08,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:37:08,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:37:08,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:37:08,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:37:08,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:37:08,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:37:08,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:37:08,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:37:08,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:37:08,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:37:08,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:37:08,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:37:08,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:37:08,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:37:08,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:37:08,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:37:08,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:37:08,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:37:08,547 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:37:08,547 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:37:08,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:37:08,547 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:37:08,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:37:08,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:37:08,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:37:08,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:37:08,867 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:37:08,868 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-10-16 13:37:08,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa0aa5254/61e8bd9b708b436b9d54b1f7c25d06fe/FLAGb814cbdbf [2020-10-16 13:37:09,450 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:37:09,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-10-16 13:37:09,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa0aa5254/61e8bd9b708b436b9d54b1f7c25d06fe/FLAGb814cbdbf [2020-10-16 13:37:09,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa0aa5254/61e8bd9b708b436b9d54b1f7c25d06fe [2020-10-16 13:37:09,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:37:09,723 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:37:09,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:37:09,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:37:09,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:37:09,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:09" (1/1) ... [2020-10-16 13:37:09,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b25fcb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:09, skipping insertion in model container [2020-10-16 13:37:09,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:09" (1/1) ... [2020-10-16 13:37:09,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:37:09,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:37:10,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:37:10,257 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:37:10,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:37:10,398 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:37:10,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10 WrapperNode [2020-10-16 13:37:10,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:37:10,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:37:10,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:37:10,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:37:10,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10" (1/1) ... [2020-10-16 13:37:10,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10" (1/1) ... [2020-10-16 13:37:10,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:37:10,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:37:10,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:37:10,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:37:10,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10" (1/1) ... [2020-10-16 13:37:10,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10" (1/1) ... [2020-10-16 13:37:10,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10" (1/1) ... [2020-10-16 13:37:10,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10" (1/1) ... [2020-10-16 13:37:10,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10" (1/1) ... [2020-10-16 13:37:10,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10" (1/1) ... [2020-10-16 13:37:10,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10" (1/1) ... [2020-10-16 13:37:10,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:37:10,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:37:10,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:37:10,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:37:10,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10" (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 [2020-10-16 13:37:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:37:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:37:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:37:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:37:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:37:10,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:37:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:37:10,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:37:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:37:10,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:37:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:37:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:37:10,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:37:10,550 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:37:10,921 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:37:10,922 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:37:10,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:10 BoogieIcfgContainer [2020-10-16 13:37:10,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:37:10,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:37:10,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:37:10,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:37:10,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:37:09" (1/3) ... [2020-10-16 13:37:10,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715335d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:10, skipping insertion in model container [2020-10-16 13:37:10,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:10" (2/3) ... [2020-10-16 13:37:10,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715335d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:10, skipping insertion in model container [2020-10-16 13:37:10,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:10" (3/3) ... [2020-10-16 13:37:10,933 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2020-10-16 13:37:10,945 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:37:10,946 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:37:10,956 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:37:10,957 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:37:10,984 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,984 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,984 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,985 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,985 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,986 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,986 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,988 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,988 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,988 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,993 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,994 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,994 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:10,994 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:11,000 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:11,001 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:11,001 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:11,001 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:11,004 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:11,004 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:11,004 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:11,004 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:37:11,013 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:37:11,024 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:37:11,042 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:37:11,043 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:37:11,043 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:37:11,043 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:37:11,043 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:37:11,043 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:37:11,043 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:37:11,044 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:37:11,055 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:37:11,056 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 13:37:11,058 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 13:37:11,059 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 13:37:11,101 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-16 13:37:11,102 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:37:11,107 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. [2020-10-16 13:37:11,109 INFO L117 LiptonReduction]: Number of co-enabled transitions 1186 [2020-10-16 13:37:12,427 INFO L132 LiptonReduction]: Checked pairs total: 2093 [2020-10-16 13:37:12,428 INFO L134 LiptonReduction]: Total number of compositions: 56 [2020-10-16 13:37:12,436 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-10-16 13:37:12,460 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-10-16 13:37:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-10-16 13:37:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:37:12,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:12,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:12,472 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:12,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:12,479 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-10-16 13:37:12,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:12,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349660988] [2020-10-16 13:37:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:12,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349660988] [2020-10-16 13:37:12,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:12,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:37:12,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [490423606] [2020-10-16 13:37:12,729 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:12,732 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:12,746 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:37:12,747 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:12,751 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:37:12,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:37:12,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:12,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:37:12,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:37:12,769 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-10-16 13:37:12,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:12,801 INFO L93 Difference]: Finished difference Result 222 states and 615 transitions. [2020-10-16 13:37:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:37:12,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:37:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:12,816 INFO L225 Difference]: With dead ends: 222 [2020-10-16 13:37:12,817 INFO L226 Difference]: Without dead ends: 174 [2020-10-16 13:37:12,818 INFO L677 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 [2020-10-16 13:37:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-16 13:37:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-16 13:37:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-16 13:37:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 463 transitions. [2020-10-16 13:37:12,879 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 463 transitions. Word has length 8 [2020-10-16 13:37:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:12,880 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 463 transitions. [2020-10-16 13:37:12,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:37:12,880 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 463 transitions. [2020-10-16 13:37:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:37:12,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:12,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:12,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:37:12,882 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:12,883 INFO L82 PathProgramCache]: Analyzing trace with hash -273417231, now seen corresponding path program 1 times [2020-10-16 13:37:12,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:12,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743287291] [2020-10-16 13:37:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:12,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743287291] [2020-10-16 13:37:12,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:12,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:37:12,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [692700323] [2020-10-16 13:37:12,953 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:12,954 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:12,956 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-16 13:37:12,957 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:13,009 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:37:13,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:37:13,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:13,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:37:13,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:37:13,012 INFO L87 Difference]: Start difference. First operand 174 states and 463 transitions. Second operand 4 states. [2020-10-16 13:37:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:13,039 INFO L93 Difference]: Finished difference Result 240 states and 615 transitions. [2020-10-16 13:37:13,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:37:13,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:37:13,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:13,042 INFO L225 Difference]: With dead ends: 240 [2020-10-16 13:37:13,042 INFO L226 Difference]: Without dead ends: 138 [2020-10-16 13:37:13,043 INFO L677 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 [2020-10-16 13:37:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-16 13:37:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-16 13:37:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 13:37:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 351 transitions. [2020-10-16 13:37:13,069 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 351 transitions. Word has length 9 [2020-10-16 13:37:13,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:13,069 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 351 transitions. [2020-10-16 13:37:13,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:37:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 351 transitions. [2020-10-16 13:37:13,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:37:13,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:13,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:13,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:37:13,075 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:13,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:13,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1925064459, now seen corresponding path program 1 times [2020-10-16 13:37:13,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:13,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012649936] [2020-10-16 13:37:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:13,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012649936] [2020-10-16 13:37:13,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:13,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:37:13,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [290418788] [2020-10-16 13:37:13,170 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:13,173 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:13,176 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-10-16 13:37:13,177 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:13,195 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:37:13,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:37:13,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:13,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:37:13,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:37:13,197 INFO L87 Difference]: Start difference. First operand 138 states and 351 transitions. Second operand 3 states. [2020-10-16 13:37:13,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:13,204 INFO L93 Difference]: Finished difference Result 132 states and 332 transitions. [2020-10-16 13:37:13,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:37:13,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 13:37:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:13,213 INFO L225 Difference]: With dead ends: 132 [2020-10-16 13:37:13,213 INFO L226 Difference]: Without dead ends: 132 [2020-10-16 13:37:13,214 INFO L677 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 [2020-10-16 13:37:13,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-16 13:37:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-10-16 13:37:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 13:37:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-16 13:37:13,227 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 10 [2020-10-16 13:37:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:13,227 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-16 13:37:13,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:37:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-16 13:37:13,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:37:13,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:13,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:13,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:37:13,229 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:13,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:13,230 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 1 times [2020-10-16 13:37:13,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:13,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919080244] [2020-10-16 13:37:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:13,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919080244] [2020-10-16 13:37:13,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:13,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:37:13,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [644624927] [2020-10-16 13:37:13,275 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:13,276 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:13,279 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-10-16 13:37:13,279 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:13,324 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:37:13,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:37:13,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:13,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:37:13,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:37:13,326 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 4 states. [2020-10-16 13:37:13,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:13,344 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-10-16 13:37:13,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:37:13,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 13:37:13,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:13,346 INFO L225 Difference]: With dead ends: 144 [2020-10-16 13:37:13,346 INFO L226 Difference]: Without dead ends: 60 [2020-10-16 13:37:13,347 INFO L677 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 [2020-10-16 13:37:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-16 13:37:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-16 13:37:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-16 13:37:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-10-16 13:37:13,352 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-10-16 13:37:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:13,352 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-10-16 13:37:13,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:37:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-10-16 13:37:13,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:37:13,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:13,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:13,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:37:13,354 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-10-16 13:37:13,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:13,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58866260] [2020-10-16 13:37:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:13,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58866260] [2020-10-16 13:37:13,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:13,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:37:13,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1633253745] [2020-10-16 13:37:13,413 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:13,415 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:13,417 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-16 13:37:13,417 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:13,447 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:37:13,476 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:37:13,491 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:37:13,506 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:37:13,511 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2315#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:37:13,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:37:13,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:13,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:37:13,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:37:13,513 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 5 states. [2020-10-16 13:37:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:13,573 INFO L93 Difference]: Finished difference Result 59 states and 111 transitions. [2020-10-16 13:37:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:37:13,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 13:37:13,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:13,574 INFO L225 Difference]: With dead ends: 59 [2020-10-16 13:37:13,574 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 13:37:13,575 INFO L677 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 [2020-10-16 13:37:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 13:37:13,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 13:37:13,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 13:37:13,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-10-16 13:37:13,578 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 12 [2020-10-16 13:37:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:13,579 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-10-16 13:37:13,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:37:13,579 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-10-16 13:37:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:37:13,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:13,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:13,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:37:13,580 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:13,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:13,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-10-16 13:37:13,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:13,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740128162] [2020-10-16 13:37:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:13,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740128162] [2020-10-16 13:37:13,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:13,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:37:13,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2048608514] [2020-10-16 13:37:13,662 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:13,666 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:13,669 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 13:37:13,669 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:13,677 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:37:13,714 INFO L313 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))] [2020-10-16 13:37:13,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:37:13,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:13,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:37:13,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:37:13,716 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 9 states. [2020-10-16 13:37:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:13,781 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-10-16 13:37:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:37:13,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-10-16 13:37:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:13,782 INFO L225 Difference]: With dead ends: 35 [2020-10-16 13:37:13,782 INFO L226 Difference]: Without dead ends: 29 [2020-10-16 13:37:13,783 INFO L677 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 [2020-10-16 13:37:13,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-16 13:37:13,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-16 13:37:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 13:37:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-10-16 13:37:13,785 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-10-16 13:37:13,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:13,786 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-10-16 13:37:13,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:37:13,786 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-10-16 13:37:13,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 13:37:13,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:37:13,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:37:13,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:37:13,787 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:37:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:37:13,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-10-16 13:37:13,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:37:13,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316056176] [2020-10-16 13:37:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:37:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:37:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:37:13,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316056176] [2020-10-16 13:37:13,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:37:13,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:37:13,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [849456522] [2020-10-16 13:37:13,818 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:37:13,820 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:37:13,824 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-10-16 13:37:13,824 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:37:13,830 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:37:13,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:37:13,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:37:13,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:37:13,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:37:13,831 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-10-16 13:37:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:37:13,837 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-10-16 13:37:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:37:13,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-16 13:37:13,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:37:13,838 INFO L225 Difference]: With dead ends: 28 [2020-10-16 13:37:13,838 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:37:13,839 INFO L677 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 [2020-10-16 13:37:13,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:37:13,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:37:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:37:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:37:13,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-16 13:37:13,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:37:13,840 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:37:13,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:37:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:37:13,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:37:13,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:37:13,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:37:13 BasicIcfg [2020-10-16 13:37:13,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:37:13,847 INFO L168 Benchmark]: Toolchain (without parser) took 4123.76 ms. Allocated memory was 140.5 MB in the beginning and 248.0 MB in the end (delta: 107.5 MB). Free memory was 102.2 MB in the beginning and 184.0 MB in the end (delta: -81.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:37:13,848 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-16 13:37:13,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.95 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 162.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:37:13,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.11 ms. Allocated memory is still 204.5 MB. Free memory was 162.2 MB in the beginning and 160.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:37:13,851 INFO L168 Benchmark]: Boogie Preprocessor took 30.43 ms. Allocated memory is still 204.5 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:37:13,851 INFO L168 Benchmark]: RCFGBuilder took 444.32 ms. Allocated memory is still 204.5 MB. Free memory was 158.2 MB in the beginning and 136.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:37:13,852 INFO L168 Benchmark]: TraceAbstraction took 2919.03 ms. Allocated memory was 204.5 MB in the beginning and 248.0 MB in the end (delta: 43.5 MB). Free memory was 136.3 MB in the beginning and 184.0 MB in the end (delta: -47.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:37:13,856 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.95 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 162.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.11 ms. Allocated memory is still 204.5 MB. Free memory was 162.2 MB in the beginning and 160.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.43 ms. Allocated memory is still 204.5 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.32 ms. Allocated memory is still 204.5 MB. Free memory was 158.2 MB in the beginning and 136.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2919.03 ms. Allocated memory was 204.5 MB in the beginning and 248.0 MB in the end (delta: 43.5 MB). Free memory was 136.3 MB in the beginning and 184.0 MB in the end (delta: -47.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 618 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 31 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 76 PlacesBefore, 30 PlacesAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 56 TotalNumberOfCompositions, 2093 MoverChecksTotal - 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: 2.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 113 SDtfs, 88 SDslu, 126 SDs, 0 SdLazy, 101 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s 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...