/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/thin002_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 02:33:17,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 02:33:17,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 02:33:17,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 02:33:17,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 02:33:17,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 02:33:17,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 02:33:17,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 02:33:17,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 02:33:17,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 02:33:17,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 02:33:17,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 02:33:17,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 02:33:17,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 02:33:17,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 02:33:17,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 02:33:17,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 02:33:17,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 02:33:17,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 02:33:17,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 02:33:17,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 02:33:17,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 02:33:17,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 02:33:17,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 02:33:17,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 02:33:17,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 02:33:17,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 02:33:17,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 02:33:17,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 02:33:17,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 02:33:17,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 02:33:17,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 02:33:17,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 02:33:17,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 02:33:17,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 02:33:17,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 02:33:17,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 02:33:17,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 02:33:17,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 02:33:17,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 02:33:17,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 02:33:17,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 02:33:17,577 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 02:33:17,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 02:33:17,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 02:33:17,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 02:33:17,580 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 02:33:17,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 02:33:17,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 02:33:17,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 02:33:17,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 02:33:17,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 02:33:17,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 02:33:17,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 02:33:17,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 02:33:17,583 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 02:33:17,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 02:33:17,583 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 02:33:17,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 02:33:17,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 02:33:17,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 02:33:17,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 02:33:17,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 02:33:17,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:33:17,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 02:33:17,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 02:33:17,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 02:33:17,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 02:33:17,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 02:33:17,587 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 02:33:17,587 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 02:33:17,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 02:33:17,588 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 02:33:18,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 02:33:18,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 02:33:18,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 02:33:18,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 02:33:18,113 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 02:33:18,114 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-09-18 02:33:18,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4037176/5bca1bc811574da8a169fb20407fb4ca/FLAG942eecca7 [2020-09-18 02:33:18,895 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 02:33:18,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-09-18 02:33:18,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4037176/5bca1bc811574da8a169fb20407fb4ca/FLAG942eecca7 [2020-09-18 02:33:19,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4037176/5bca1bc811574da8a169fb20407fb4ca [2020-09-18 02:33:19,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 02:33:19,103 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 02:33:19,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 02:33:19,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 02:33:19,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 02:33:19,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:33:19" (1/1) ... [2020-09-18 02:33:19,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225002a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19, skipping insertion in model container [2020-09-18 02:33:19,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:33:19" (1/1) ... [2020-09-18 02:33:19,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 02:33:19,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 02:33:19,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:33:19,748 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 02:33:19,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:33:19,919 INFO L208 MainTranslator]: Completed translation [2020-09-18 02:33:19,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19 WrapperNode [2020-09-18 02:33:19,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 02:33:19,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 02:33:19,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 02:33:19,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 02:33:19,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19" (1/1) ... [2020-09-18 02:33:19,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19" (1/1) ... [2020-09-18 02:33:19,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 02:33:19,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 02:33:19,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 02:33:19,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 02:33:19,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19" (1/1) ... [2020-09-18 02:33:19,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19" (1/1) ... [2020-09-18 02:33:19,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19" (1/1) ... [2020-09-18 02:33:19,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19" (1/1) ... [2020-09-18 02:33:20,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19" (1/1) ... [2020-09-18 02:33:20,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19" (1/1) ... [2020-09-18 02:33:20,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19" (1/1) ... [2020-09-18 02:33:20,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 02:33:20,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 02:33:20,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 02:33:20,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 02:33:20,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:33:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 02:33:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 02:33:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 02:33:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 02:33:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 02:33:20,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 02:33:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 02:33:20,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 02:33:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 02:33:20,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 02:33:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-18 02:33:20,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-18 02:33:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 02:33:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 02:33:20,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 02:33:20,100 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 02:33:20,491 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 02:33:20,491 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 02:33:20,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:33:20 BoogieIcfgContainer [2020-09-18 02:33:20,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 02:33:20,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 02:33:20,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 02:33:20,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 02:33:20,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 02:33:19" (1/3) ... [2020-09-18 02:33:20,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3922699d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:33:20, skipping insertion in model container [2020-09-18 02:33:20,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:33:19" (2/3) ... [2020-09-18 02:33:20,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3922699d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:33:20, skipping insertion in model container [2020-09-18 02:33:20,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:33:20" (3/3) ... [2020-09-18 02:33:20,507 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.opt.i [2020-09-18 02:33:20,520 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 02:33:20,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 02:33:20,531 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 02:33:20,533 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 02:33:20,569 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,569 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,569 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,569 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,572 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,572 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,574 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,574 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,576 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,576 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,576 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,576 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,577 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,577 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,585 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,586 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,586 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,596 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,596 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,597 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,597 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,600 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,600 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,603 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,603 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,604 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:33:20,627 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-18 02:33:20,653 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:33:20,653 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:33:20,653 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:33:20,653 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:33:20,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:33:20,654 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:33:20,654 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:33:20,654 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:33:20,674 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-09-18 02:33:20,677 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-18 02:33:20,732 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-18 02:33:20,732 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:33:20,739 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-09-18 02:33:20,743 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-18 02:33:20,770 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-18 02:33:20,771 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:33:20,772 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-09-18 02:33:20,775 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-09-18 02:33:20,776 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:33:22,329 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-18 02:33:22,403 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-09-18 02:33:22,403 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-09-18 02:33:22,410 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-09-18 02:33:22,534 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-09-18 02:33:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-09-18 02:33:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 02:33:22,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:33:22,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:33:22,556 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:33:22,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:33:22,565 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-09-18 02:33:22,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:33:22,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618679574] [2020-09-18 02:33:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:33:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:33:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:33:22,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618679574] [2020-09-18 02:33:22,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:33:22,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:33:22,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [334037884] [2020-09-18 02:33:22,830 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:33:22,834 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:33:22,853 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-09-18 02:33:22,853 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:33:22,855 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:33:22,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-18 02:33:22,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:33:22,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-18 02:33:22,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-18 02:33:22,882 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-09-18 02:33:22,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:33:22,937 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-09-18 02:33:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-18 02:33:22,939 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-18 02:33:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:33:22,981 INFO L225 Difference]: With dead ends: 1450 [2020-09-18 02:33:22,982 INFO L226 Difference]: Without dead ends: 1194 [2020-09-18 02:33:22,984 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 [2020-09-18 02:33:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-09-18 02:33:23,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-09-18 02:33:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-09-18 02:33:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-09-18 02:33:23,144 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-09-18 02:33:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:33:23,146 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-09-18 02:33:23,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-18 02:33:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-09-18 02:33:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 02:33:23,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:33:23,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:33:23,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 02:33:23,150 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:33:23,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:33:23,150 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-09-18 02:33:23,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:33:23,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983691548] [2020-09-18 02:33:23,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:33:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:33:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:33:23,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983691548] [2020-09-18 02:33:23,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:33:23,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:33:23,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [797637598] [2020-09-18 02:33:23,361 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:33:23,362 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:33:23,366 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-18 02:33:23,366 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:33:23,366 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:33:23,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:33:23,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:33:23,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:33:23,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:33:23,370 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-09-18 02:33:23,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:33:23,470 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-09-18 02:33:23,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:33:23,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 02:33:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:33:23,481 INFO L225 Difference]: With dead ends: 1322 [2020-09-18 02:33:23,481 INFO L226 Difference]: Without dead ends: 1066 [2020-09-18 02:33:23,482 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 [2020-09-18 02:33:23,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-18 02:33:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-09-18 02:33:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-09-18 02:33:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-09-18 02:33:23,527 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-09-18 02:33:23,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:33:23,528 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-09-18 02:33:23,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:33:23,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-09-18 02:33:23,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 02:33:23,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:33:23,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:33:23,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 02:33:23,537 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:33:23,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:33:23,538 INFO L82 PathProgramCache]: Analyzing trace with hash -426404145, now seen corresponding path program 1 times [2020-09-18 02:33:23,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:33:23,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465552046] [2020-09-18 02:33:23,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:33:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:33:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:33:23,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465552046] [2020-09-18 02:33:23,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:33:23,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:33:23,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [923276095] [2020-09-18 02:33:23,670 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:33:23,671 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:33:23,674 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-09-18 02:33:23,675 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:33:23,746 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:33:23,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:33:23,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:33:23,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:33:23,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:33:23,747 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-09-18 02:33:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:33:23,780 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-09-18 02:33:23,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:33:23,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-18 02:33:23,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:33:23,790 INFO L225 Difference]: With dead ends: 1162 [2020-09-18 02:33:23,790 INFO L226 Difference]: Without dead ends: 970 [2020-09-18 02:33:23,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:33:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-09-18 02:33:23,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-09-18 02:33:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-09-18 02:33:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-09-18 02:33:23,831 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-09-18 02:33:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:33:23,832 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-09-18 02:33:23,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:33:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-09-18 02:33:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 02:33:23,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:33:23,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:33:23,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 02:33:23,834 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:33:23,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:33:23,835 INFO L82 PathProgramCache]: Analyzing trace with hash -333650641, now seen corresponding path program 1 times [2020-09-18 02:33:23,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:33:23,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014958689] [2020-09-18 02:33:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:33:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:33:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:33:23,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014958689] [2020-09-18 02:33:23,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:33:23,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:33:23,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [27381951] [2020-09-18 02:33:23,948 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:33:23,950 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:33:23,953 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-09-18 02:33:23,953 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:33:24,035 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:33:24,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 02:33:24,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:33:24,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 02:33:24,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:33:24,037 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-09-18 02:33:24,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:33:24,092 INFO L93 Difference]: Finished difference Result 1210 states and 4120 transitions. [2020-09-18 02:33:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 02:33:24,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-18 02:33:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:33:24,097 INFO L225 Difference]: With dead ends: 1210 [2020-09-18 02:33:24,098 INFO L226 Difference]: Without dead ends: 586 [2020-09-18 02:33:24,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:33:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-18 02:33:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2020-09-18 02:33:24,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-09-18 02:33:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1872 transitions. [2020-09-18 02:33:24,120 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1872 transitions. Word has length 13 [2020-09-18 02:33:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:33:24,120 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 1872 transitions. [2020-09-18 02:33:24,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 02:33:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1872 transitions. [2020-09-18 02:33:24,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-18 02:33:24,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:33:24,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:33:24,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 02:33:24,122 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:33:24,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:33:24,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1296364861, now seen corresponding path program 1 times [2020-09-18 02:33:24,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:33:24,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631577449] [2020-09-18 02:33:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:33:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:33:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:33:24,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631577449] [2020-09-18 02:33:24,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:33:24,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:33:24,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1421844446] [2020-09-18 02:33:24,235 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:33:24,237 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:33:24,243 INFO L274 McrAutomatonBuilder]: Finished intersection with 52 states and 100 transitions. [2020-09-18 02:33:24,244 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:33:24,510 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:33:24,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:33:24,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:33:24,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:33:24,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:33:24,511 INFO L87 Difference]: Start difference. First operand 586 states and 1872 transitions. Second operand 4 states. [2020-09-18 02:33:24,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:33:24,533 INFO L93 Difference]: Finished difference Result 622 states and 1938 transitions. [2020-09-18 02:33:24,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:33:24,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-18 02:33:24,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:33:24,539 INFO L225 Difference]: With dead ends: 622 [2020-09-18 02:33:24,539 INFO L226 Difference]: Without dead ends: 550 [2020-09-18 02:33:24,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:33:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-09-18 02:33:24,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2020-09-18 02:33:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-09-18 02:33:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1734 transitions. [2020-09-18 02:33:24,559 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1734 transitions. Word has length 15 [2020-09-18 02:33:24,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:33:24,559 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 1734 transitions. [2020-09-18 02:33:24,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:33:24,560 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1734 transitions. [2020-09-18 02:33:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-18 02:33:24,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:33:24,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:33:24,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 02:33:24,562 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:33:24,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:33:24,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1532551202, now seen corresponding path program 1 times [2020-09-18 02:33:24,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:33:24,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612771001] [2020-09-18 02:33:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:33:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:33:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:33:24,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612771001] [2020-09-18 02:33:24,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:33:24,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:33:24,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1408447704] [2020-09-18 02:33:24,653 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:33:24,655 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:33:24,665 INFO L274 McrAutomatonBuilder]: Finished intersection with 68 states and 144 transitions. [2020-09-18 02:33:24,665 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:33:24,873 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:33:24,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 02:33:24,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:33:24,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 02:33:24,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:33:24,875 INFO L87 Difference]: Start difference. First operand 550 states and 1734 transitions. Second operand 5 states. [2020-09-18 02:33:24,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:33:24,917 INFO L93 Difference]: Finished difference Result 760 states and 2337 transitions. [2020-09-18 02:33:24,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 02:33:24,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-18 02:33:24,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:33:24,920 INFO L225 Difference]: With dead ends: 760 [2020-09-18 02:33:24,920 INFO L226 Difference]: Without dead ends: 322 [2020-09-18 02:33:24,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:33:24,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-09-18 02:33:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2020-09-18 02:33:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-09-18 02:33:24,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 924 transitions. [2020-09-18 02:33:24,932 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 924 transitions. Word has length 16 [2020-09-18 02:33:24,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:33:24,932 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 924 transitions. [2020-09-18 02:33:24,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 02:33:24,933 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 924 transitions. [2020-09-18 02:33:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:33:24,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:33:24,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:33:24,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 02:33:24,934 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:33:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:33:24,935 INFO L82 PathProgramCache]: Analyzing trace with hash -59545778, now seen corresponding path program 1 times [2020-09-18 02:33:24,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:33:24,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905604035] [2020-09-18 02:33:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:33:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:33:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:33:25,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905604035] [2020-09-18 02:33:25,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:33:25,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:33:25,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2054444748] [2020-09-18 02:33:25,012 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:33:25,014 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:33:25,021 INFO L274 McrAutomatonBuilder]: Finished intersection with 56 states and 98 transitions. [2020-09-18 02:33:25,022 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:33:25,130 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:33:25,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 02:33:25,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:33:25,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 02:33:25,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:33:25,131 INFO L87 Difference]: Start difference. First operand 322 states and 924 transitions. Second operand 5 states. [2020-09-18 02:33:25,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:33:25,175 INFO L93 Difference]: Finished difference Result 418 states and 1180 transitions. [2020-09-18 02:33:25,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 02:33:25,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-18 02:33:25,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:33:25,177 INFO L225 Difference]: With dead ends: 418 [2020-09-18 02:33:25,177 INFO L226 Difference]: Without dead ends: 148 [2020-09-18 02:33:25,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:33:25,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-18 02:33:25,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-09-18 02:33:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-18 02:33:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 398 transitions. [2020-09-18 02:33:25,183 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 398 transitions. Word has length 17 [2020-09-18 02:33:25,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:33:25,184 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 398 transitions. [2020-09-18 02:33:25,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 02:33:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 398 transitions. [2020-09-18 02:33:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-18 02:33:25,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:33:25,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:33:25,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 02:33:25,185 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:33:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:33:25,186 INFO L82 PathProgramCache]: Analyzing trace with hash 355522076, now seen corresponding path program 1 times [2020-09-18 02:33:25,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:33:25,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363316269] [2020-09-18 02:33:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:33:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:33:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:33:25,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363316269] [2020-09-18 02:33:25,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:33:25,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:33:25,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1220764526] [2020-09-18 02:33:25,266 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:33:25,269 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:33:25,275 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-09-18 02:33:25,275 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:33:25,300 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:33:25,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 02:33:25,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:33:25,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 02:33:25,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:33:25,302 INFO L87 Difference]: Start difference. First operand 148 states and 398 transitions. Second operand 5 states. [2020-09-18 02:33:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:33:25,340 INFO L93 Difference]: Finished difference Result 124 states and 322 transitions. [2020-09-18 02:33:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 02:33:25,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-18 02:33:25,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:33:25,342 INFO L225 Difference]: With dead ends: 124 [2020-09-18 02:33:25,342 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 02:33:25,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:33:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 02:33:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 02:33:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 02:33:25,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 02:33:25,344 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-18 02:33:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:33:25,344 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 02:33:25,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 02:33:25,345 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 02:33:25,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 02:33:25,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 02:33:25,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 02:33:25 BasicIcfg [2020-09-18 02:33:25,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 02:33:25,371 INFO L168 Benchmark]: Toolchain (without parser) took 6270.52 ms. Allocated memory was 147.3 MB in the beginning and 294.6 MB in the end (delta: 147.3 MB). Free memory was 100.8 MB in the beginning and 263.2 MB in the end (delta: -162.4 MB). Peak memory consumption was 158.0 MB. Max. memory is 7.1 GB. [2020-09-18 02:33:25,372 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-18 02:33:25,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 815.79 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 100.1 MB in the beginning and 160.7 MB in the end (delta: -60.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-18 02:33:25,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.56 ms. Allocated memory is still 202.9 MB. Free memory was 160.7 MB in the beginning and 158.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-18 02:33:25,374 INFO L168 Benchmark]: Boogie Preprocessor took 30.67 ms. Allocated memory is still 202.9 MB. Free memory was 158.1 MB in the beginning and 156.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 02:33:25,375 INFO L168 Benchmark]: RCFGBuilder took 482.73 ms. Allocated memory is still 202.9 MB. Free memory was 156.8 MB in the beginning and 131.8 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-18 02:33:25,375 INFO L168 Benchmark]: TraceAbstraction took 4869.96 ms. Allocated memory was 202.9 MB in the beginning and 294.6 MB in the end (delta: 91.8 MB). Free memory was 131.8 MB in the beginning and 263.2 MB in the end (delta: -131.4 MB). Peak memory consumption was 133.5 MB. Max. memory is 7.1 GB. [2020-09-18 02:33:25,382 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 815.79 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 100.1 MB in the beginning and 160.7 MB in the end (delta: -60.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.56 ms. Allocated memory is still 202.9 MB. Free memory was 160.7 MB in the beginning and 158.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.67 ms. Allocated memory is still 202.9 MB. Free memory was 158.1 MB in the beginning and 156.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.73 ms. Allocated memory is still 202.9 MB. Free memory was 156.8 MB in the beginning and 131.8 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4869.96 ms. Allocated memory was 202.9 MB in the beginning and 294.6 MB in the end (delta: 91.8 MB). Free memory was 131.8 MB in the beginning and 263.2 MB in the end (delta: -131.4 MB). Peak memory consumption was 133.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1043 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 232 SDtfs, 236 SDslu, 337 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 188 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4169 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...