/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:39:07,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:39:07,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:39:07,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:39:07,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:39:07,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:39:07,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:39:07,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:39:07,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:39:07,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:39:07,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:39:07,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:39:07,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:39:07,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:39:07,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:39:07,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:39:07,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:39:07,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:39:07,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:39:07,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:39:07,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:39:07,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:39:07,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:39:07,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:39:07,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:39:07,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:39:07,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:39:07,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:39:07,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:39:07,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:39:07,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:39:07,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:39:07,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:39:07,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:39:07,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:39:07,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:39:07,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:39:07,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:39:07,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:39:07,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:39:07,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:39:07,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 19:39:07,553 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:39:07,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:39:07,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:39:07,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:39:07,555 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:39:07,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:39:07,556 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:39:07,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:39:07,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:39:07,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:39:07,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:39:07,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:39:07,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:39:07,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:39:07,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:39:07,558 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:39:07,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:39:07,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:39:07,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:39:07,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:39:07,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:39:07,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:39:07,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:39:07,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:39:07,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:39:07,560 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:39:07,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:39:07,561 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:39:07,561 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:39:07,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:39:07,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:39:07,822 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:39:07,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:39:07,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:39:07,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:39:07,839 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:39:07,840 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2020-04-18 19:39:07,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310847d45/1d3f52a22d7c4940a81ca4d5ad28af5d/FLAG0d4acd9b4 [2020-04-18 19:39:08,424 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:39:08,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2020-04-18 19:39:08,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310847d45/1d3f52a22d7c4940a81ca4d5ad28af5d/FLAG0d4acd9b4 [2020-04-18 19:39:08,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310847d45/1d3f52a22d7c4940a81ca4d5ad28af5d [2020-04-18 19:39:08,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:39:08,750 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:39:08,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:39:08,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:39:08,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:39:08,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:39:08" (1/1) ... [2020-04-18 19:39:08,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:08, skipping insertion in model container [2020-04-18 19:39:08,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:39:08" (1/1) ... [2020-04-18 19:39:08,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:39:08,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:39:09,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:39:09,360 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:39:09,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:39:09,502 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:39:09,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09 WrapperNode [2020-04-18 19:39:09,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:39:09,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:39:09,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:39:09,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:39:09,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09" (1/1) ... [2020-04-18 19:39:09,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09" (1/1) ... [2020-04-18 19:39:09,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:39:09,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:39:09,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:39:09,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:39:09,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09" (1/1) ... [2020-04-18 19:39:09,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09" (1/1) ... [2020-04-18 19:39:09,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09" (1/1) ... [2020-04-18 19:39:09,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09" (1/1) ... [2020-04-18 19:39:09,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09" (1/1) ... [2020-04-18 19:39:09,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09" (1/1) ... [2020-04-18 19:39:09,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09" (1/1) ... [2020-04-18 19:39:09,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:39:09,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:39:09,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:39:09,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:39:09,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09" (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 [2020-04-18 19:39:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:39:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:39:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:39:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:39:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:39:09,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:39:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:39:09,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:39:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:39:09,650 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:39:09,650 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 19:39:09,650 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 19:39:09,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:39:09,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:39:09,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:39:09,652 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:39:10,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:39:10,051 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:39:10,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:39:10 BoogieIcfgContainer [2020-04-18 19:39:10,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:39:10,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:39:10,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:39:10,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:39:10,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:39:08" (1/3) ... [2020-04-18 19:39:10,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4463a5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:39:10, skipping insertion in model container [2020-04-18 19:39:10,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:09" (2/3) ... [2020-04-18 19:39:10,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4463a5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:39:10, skipping insertion in model container [2020-04-18 19:39:10,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:39:10" (3/3) ... [2020-04-18 19:39:10,064 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2020-04-18 19:39:10,074 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:39:10,074 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:39:10,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:39:10,081 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:39:10,106 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,106 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,106 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,107 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,107 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,107 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,108 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,108 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,108 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,109 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,109 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,109 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,110 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,110 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,110 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,111 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,111 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,111 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,112 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,112 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,112 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,112 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,113 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,114 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,118 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,118 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,118 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,119 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,125 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,125 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,125 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,126 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,129 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,129 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,129 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,129 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,133 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,133 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,133 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,133 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:10,150 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 19:39:10,170 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:39:10,170 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:39:10,171 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:39:10,171 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:39:10,171 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:39:10,171 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:39:10,171 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:39:10,171 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:39:10,184 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 81 transitions, 182 flow [2020-04-18 19:39:15,530 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 47252 states. [2020-04-18 19:39:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 47252 states. [2020-04-18 19:39:15,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:39:15,614 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:39:15,616 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:39:15,616 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:39:15,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:15,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1175723912, now seen corresponding path program 1 times [2020-04-18 19:39:15,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:39:15,630 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [753292650] [2020-04-18 19:39:15,646 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:15,664 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 40 transitions. [2020-04-18 19:39:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-04-18 19:39:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:39:15,667 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:39:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:15,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1175723912, now seen corresponding path program 2 times [2020-04-18 19:39:15,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:15,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626555648] [2020-04-18 19:39:15,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:16,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626555648] [2020-04-18 19:39:16,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:16,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:39:16,171 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:16,176 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:16,188 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 40 transitions. [2020-04-18 19:39:16,188 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:16,251 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:39:16,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:39:16,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:39:16,258 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 7 states. [2020-04-18 19:39:16,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:16,342 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2020-04-18 19:39:16,342 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 40 transitions. [2020-04-18 19:39:16,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:39:16,343 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [753292650] [2020-04-18 19:39:16,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:39:16,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:39:16,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [753292650] [2020-04-18 19:39:16,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:39:16,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:39:16,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:39:16,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:39:16,351 INFO L87 Difference]: Start difference. First operand 47252 states. Second operand 7 states. [2020-04-18 19:39:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:18,671 INFO L93 Difference]: Finished difference Result 97124 states and 412900 transitions. [2020-04-18 19:39:18,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:39:18,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 19:39:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:39:18,913 INFO L225 Difference]: With dead ends: 97124 [2020-04-18 19:39:18,914 INFO L226 Difference]: Without dead ends: 28448 [2020-04-18 19:39:18,916 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:39:19,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28448 states. [2020-04-18 19:39:20,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28448 to 24128. [2020-04-18 19:39:20,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24128 states. [2020-04-18 19:39:20,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24128 states to 24128 states and 100604 transitions. [2020-04-18 19:39:20,364 INFO L78 Accepts]: Start accepts. Automaton has 24128 states and 100604 transitions. Word has length 40 [2020-04-18 19:39:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:39:20,366 INFO L479 AbstractCegarLoop]: Abstraction has 24128 states and 100604 transitions. [2020-04-18 19:39:20,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:39:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 24128 states and 100604 transitions. [2020-04-18 19:39:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:39:20,406 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:39:20,407 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:39:20,407 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:39:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:20,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1653000969, now seen corresponding path program 1 times [2020-04-18 19:39:20,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:39:20,408 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1935188498] [2020-04-18 19:39:20,409 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:20,415 INFO L259 McrAutomatonBuilder]: Finished intersection with 91 states and 138 transitions. [2020-04-18 19:39:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2020-04-18 19:39:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:39:20,416 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:39:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:20,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1653000969, now seen corresponding path program 2 times [2020-04-18 19:39:20,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:20,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196766859] [2020-04-18 19:39:20,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:20,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196766859] [2020-04-18 19:39:20,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:20,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:39:20,611 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:20,617 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:20,633 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 114 transitions. [2020-04-18 19:39:20,634 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:20,696 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:39:20,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:39:20,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:39:20,697 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 7 states. [2020-04-18 19:39:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:20,776 INFO L93 Difference]: Finished difference Result 91 states and 138 transitions. [2020-04-18 19:39:20,777 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 138 transitions. [2020-04-18 19:39:20,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:39:20,778 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1935188498] [2020-04-18 19:39:20,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:39:20,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:39:20,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1935188498] [2020-04-18 19:39:20,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:39:20,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:39:20,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:39:20,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:39:20,781 INFO L87 Difference]: Start difference. First operand 24128 states and 100604 transitions. Second operand 7 states. [2020-04-18 19:39:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:21,280 INFO L93 Difference]: Finished difference Result 35000 states and 143960 transitions. [2020-04-18 19:39:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:39:21,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-04-18 19:39:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:39:21,418 INFO L225 Difference]: With dead ends: 35000 [2020-04-18 19:39:21,419 INFO L226 Difference]: Without dead ends: 27272 [2020-04-18 19:39:21,421 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:39:23,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27272 states. [2020-04-18 19:39:23,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27272 to 23048. [2020-04-18 19:39:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23048 states. [2020-04-18 19:39:23,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23048 states to 23048 states and 95600 transitions. [2020-04-18 19:39:23,851 INFO L78 Accepts]: Start accepts. Automaton has 23048 states and 95600 transitions. Word has length 42 [2020-04-18 19:39:23,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:39:23,851 INFO L479 AbstractCegarLoop]: Abstraction has 23048 states and 95600 transitions. [2020-04-18 19:39:23,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:39:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 23048 states and 95600 transitions. [2020-04-18 19:39:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:39:23,894 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:39:23,895 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:39:23,895 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:39:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:23,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1667841322, now seen corresponding path program 1 times [2020-04-18 19:39:23,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:39:23,896 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [69612806] [2020-04-18 19:39:23,897 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:23,901 INFO L259 McrAutomatonBuilder]: Finished intersection with 169 states and 340 transitions. [2020-04-18 19:39:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-04-18 19:39:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:39:23,903 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:39:23,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:23,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1667841322, now seen corresponding path program 2 times [2020-04-18 19:39:23,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:23,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397165600] [2020-04-18 19:39:23,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:24,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397165600] [2020-04-18 19:39:24,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:24,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:24,120 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:24,125 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:24,138 INFO L259 McrAutomatonBuilder]: Finished intersection with 107 states and 180 transitions. [2020-04-18 19:39:24,138 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:24,203 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:39:24,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:39:24,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:39:24,204 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 8 states. [2020-04-18 19:39:24,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:24,421 INFO L93 Difference]: Finished difference Result 186 states and 356 transitions. [2020-04-18 19:39:24,421 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 356 transitions. [2020-04-18 19:39:24,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:39:24,423 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:39:24,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:24,425 INFO L82 PathProgramCache]: Analyzing trace with hash 324984480, now seen corresponding path program 3 times [2020-04-18 19:39:24,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:24,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577664381] [2020-04-18 19:39:24,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:24,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577664381] [2020-04-18 19:39:24,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:24,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:39:24,601 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:24,605 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:24,619 INFO L259 McrAutomatonBuilder]: Finished intersection with 95 states and 156 transitions. [2020-04-18 19:39:24,619 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:24,634 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:39:24,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:39:24,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:39:24,635 INFO L87 Difference]: Start difference. First operand 186 states and 356 transitions. Second operand 7 states. [2020-04-18 19:39:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:24,700 INFO L93 Difference]: Finished difference Result 186 states and 356 transitions. [2020-04-18 19:39:24,701 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 356 transitions. [2020-04-18 19:39:24,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:39:24,703 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [69612806] [2020-04-18 19:39:24,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:39:24,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:39:24,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [69612806] [2020-04-18 19:39:24,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:39:24,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:39:24,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:39:24,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:39:24,707 INFO L87 Difference]: Start difference. First operand 23048 states and 95600 transitions. Second operand 9 states. [2020-04-18 19:39:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:25,433 INFO L93 Difference]: Finished difference Result 41792 states and 170974 transitions. [2020-04-18 19:39:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 19:39:25,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-04-18 19:39:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:39:25,511 INFO L225 Difference]: With dead ends: 41792 [2020-04-18 19:39:25,511 INFO L226 Difference]: Without dead ends: 20568 [2020-04-18 19:39:25,512 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:39:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20568 states. [2020-04-18 19:39:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20568 to 17688. [2020-04-18 19:39:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17688 states. [2020-04-18 19:39:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 72870 transitions. [2020-04-18 19:39:26,170 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 72870 transitions. Word has length 44 [2020-04-18 19:39:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:39:26,170 INFO L479 AbstractCegarLoop]: Abstraction has 17688 states and 72870 transitions. [2020-04-18 19:39:26,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:39:26,170 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 72870 transitions. [2020-04-18 19:39:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:39:26,199 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:39:26,199 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:39:26,199 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:39:26,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:26,200 INFO L82 PathProgramCache]: Analyzing trace with hash -65157711, now seen corresponding path program 1 times [2020-04-18 19:39:26,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:39:26,200 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1936944440] [2020-04-18 19:39:26,202 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:26,206 INFO L259 McrAutomatonBuilder]: Finished intersection with 244 states and 537 transitions. [2020-04-18 19:39:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2020-04-18 19:39:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:39:26,209 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:39:26,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:26,209 INFO L82 PathProgramCache]: Analyzing trace with hash -378090667, now seen corresponding path program 2 times [2020-04-18 19:39:26,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:26,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130721797] [2020-04-18 19:39:26,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:26,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130721797] [2020-04-18 19:39:26,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:26,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:26,339 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:26,344 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:26,361 INFO L259 McrAutomatonBuilder]: Finished intersection with 156 states and 305 transitions. [2020-04-18 19:39:26,361 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:26,404 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:39:26,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:39:26,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:39:26,405 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 8 states. [2020-04-18 19:39:26,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:26,603 INFO L93 Difference]: Finished difference Result 265 states and 557 transitions. [2020-04-18 19:39:26,603 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 557 transitions. [2020-04-18 19:39:26,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:39:26,604 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:39:26,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:26,604 INFO L82 PathProgramCache]: Analyzing trace with hash -65157711, now seen corresponding path program 3 times [2020-04-18 19:39:26,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:26,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029436518] [2020-04-18 19:39:26,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:26,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029436518] [2020-04-18 19:39:26,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:26,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:39:26,721 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:26,727 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:27,023 INFO L259 McrAutomatonBuilder]: Finished intersection with 137 states and 257 transitions. [2020-04-18 19:39:27,023 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:27,044 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 19:39:27,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:39:27,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:39:27,044 INFO L87 Difference]: Start difference. First operand 265 states and 557 transitions. Second operand 7 states. [2020-04-18 19:39:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:27,270 INFO L93 Difference]: Finished difference Result 317 states and 655 transitions. [2020-04-18 19:39:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 655 transitions. [2020-04-18 19:39:27,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:39:27,272 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1936944440] [2020-04-18 19:39:27,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:39:27,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:39:27,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1936944440] [2020-04-18 19:39:27,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:39:27,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:39:27,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:39:27,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:39:27,274 INFO L87 Difference]: Start difference. First operand 17688 states and 72870 transitions. Second operand 9 states. [2020-04-18 19:39:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:27,476 INFO L93 Difference]: Finished difference Result 28632 states and 116622 transitions. [2020-04-18 19:39:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 19:39:27,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-04-18 19:39:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:39:27,528 INFO L225 Difference]: With dead ends: 28632 [2020-04-18 19:39:27,529 INFO L226 Difference]: Without dead ends: 18456 [2020-04-18 19:39:27,529 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:39:27,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18456 states. [2020-04-18 19:39:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18456 to 15576. [2020-04-18 19:39:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15576 states. [2020-04-18 19:39:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15576 states to 15576 states and 63238 transitions. [2020-04-18 19:39:28,111 INFO L78 Accepts]: Start accepts. Automaton has 15576 states and 63238 transitions. Word has length 45 [2020-04-18 19:39:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:39:28,112 INFO L479 AbstractCegarLoop]: Abstraction has 15576 states and 63238 transitions. [2020-04-18 19:39:28,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:39:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 15576 states and 63238 transitions. [2020-04-18 19:39:28,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:39:28,155 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:39:28,155 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:39:28,156 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:39:28,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:28,156 INFO L82 PathProgramCache]: Analyzing trace with hash -63664033, now seen corresponding path program 1 times [2020-04-18 19:39:28,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:39:28,157 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [973568196] [2020-04-18 19:39:28,159 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:28,173 INFO L259 McrAutomatonBuilder]: Finished intersection with 427 states and 1166 transitions. [2020-04-18 19:39:28,178 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states. [2020-04-18 19:39:28,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:39:28,180 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:39:28,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:28,184 INFO L82 PathProgramCache]: Analyzing trace with hash 230799435, now seen corresponding path program 2 times [2020-04-18 19:39:28,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:28,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088807939] [2020-04-18 19:39:28,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:28,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088807939] [2020-04-18 19:39:28,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:28,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:28,353 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:28,359 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:28,391 INFO L259 McrAutomatonBuilder]: Finished intersection with 229 states and 538 transitions. [2020-04-18 19:39:28,391 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:28,453 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:39:28,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:39:28,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:39:28,454 INFO L87 Difference]: Start difference. First operand 427 states. Second operand 9 states. [2020-04-18 19:39:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:28,695 INFO L93 Difference]: Finished difference Result 478 states and 1248 transitions. [2020-04-18 19:39:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1248 transitions. [2020-04-18 19:39:28,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:39:28,696 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:39:28,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:28,697 INFO L82 PathProgramCache]: Analyzing trace with hash -63664033, now seen corresponding path program 3 times [2020-04-18 19:39:28,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:28,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788201193] [2020-04-18 19:39:28,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:28,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788201193] [2020-04-18 19:39:28,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:28,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:39:28,795 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:28,799 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:28,825 INFO L259 McrAutomatonBuilder]: Finished intersection with 209 states and 490 transitions. [2020-04-18 19:39:28,825 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:28,846 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 19:39:28,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:39:28,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:39:28,847 INFO L87 Difference]: Start difference. First operand 478 states and 1248 transitions. Second operand 7 states. [2020-04-18 19:39:28,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:28,938 INFO L93 Difference]: Finished difference Result 478 states and 1248 transitions. [2020-04-18 19:39:28,938 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1248 transitions. [2020-04-18 19:39:28,939 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:39:28,940 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [973568196] [2020-04-18 19:39:28,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:39:28,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:39:28,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [973568196] [2020-04-18 19:39:28,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:39:28,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:39:28,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:39:28,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:39:28,941 INFO L87 Difference]: Start difference. First operand 15576 states and 63238 transitions. Second operand 11 states. [2020-04-18 19:39:29,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:29,863 INFO L93 Difference]: Finished difference Result 36488 states and 144246 transitions. [2020-04-18 19:39:29,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 19:39:29,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-04-18 19:39:29,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:39:29,915 INFO L225 Difference]: With dead ends: 36488 [2020-04-18 19:39:29,915 INFO L226 Difference]: Without dead ends: 17416 [2020-04-18 19:39:29,916 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=344, Invalid=1138, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:39:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17416 states. [2020-04-18 19:39:30,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17416 to 11336. [2020-04-18 19:39:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11336 states. [2020-04-18 19:39:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11336 states to 11336 states and 44756 transitions. [2020-04-18 19:39:30,313 INFO L78 Accepts]: Start accepts. Automaton has 11336 states and 44756 transitions. Word has length 46 [2020-04-18 19:39:30,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:39:30,313 INFO L479 AbstractCegarLoop]: Abstraction has 11336 states and 44756 transitions. [2020-04-18 19:39:30,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:39:30,313 INFO L276 IsEmpty]: Start isEmpty. Operand 11336 states and 44756 transitions. [2020-04-18 19:39:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:39:30,331 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:39:30,332 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:39:30,332 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:39:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:30,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1394698080, now seen corresponding path program 1 times [2020-04-18 19:39:30,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:39:30,333 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [772993734] [2020-04-18 19:39:30,335 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:30,354 INFO L259 McrAutomatonBuilder]: Finished intersection with 1225 states and 4224 transitions. [2020-04-18 19:39:30,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states. [2020-04-18 19:39:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:39:30,367 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:39:30,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:30,367 INFO L82 PathProgramCache]: Analyzing trace with hash -110438772, now seen corresponding path program 2 times [2020-04-18 19:39:30,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:30,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971387430] [2020-04-18 19:39:30,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:30,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971387430] [2020-04-18 19:39:30,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:30,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:30,486 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:30,491 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:30,558 INFO L259 McrAutomatonBuilder]: Finished intersection with 497 states and 1432 transitions. [2020-04-18 19:39:30,558 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:30,631 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:39:30,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:39:30,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:39:30,632 INFO L87 Difference]: Start difference. First operand 1225 states. Second operand 9 states. [2020-04-18 19:39:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:30,935 INFO L93 Difference]: Finished difference Result 1390 states and 4592 transitions. [2020-04-18 19:39:30,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4592 transitions. [2020-04-18 19:39:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:39:30,938 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:39:30,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:30,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1714760534, now seen corresponding path program 3 times [2020-04-18 19:39:30,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:30,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347496312] [2020-04-18 19:39:30,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:31,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347496312] [2020-04-18 19:39:31,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:31,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:31,079 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:31,082 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:31,146 INFO L259 McrAutomatonBuilder]: Finished intersection with 497 states and 1440 transitions. [2020-04-18 19:39:31,146 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:31,204 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:39:31,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:39:31,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:39:31,205 INFO L87 Difference]: Start difference. First operand 1390 states and 4592 transitions. Second operand 10 states. [2020-04-18 19:39:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:31,708 INFO L93 Difference]: Finished difference Result 1568 states and 4964 transitions. [2020-04-18 19:39:31,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 4964 transitions. [2020-04-18 19:39:31,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:39:31,711 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:39:31,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:31,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1394698080, now seen corresponding path program 4 times [2020-04-18 19:39:31,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:31,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004743677] [2020-04-18 19:39:31,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:31,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004743677] [2020-04-18 19:39:31,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:31,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:39:31,799 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:31,804 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:31,895 INFO L259 McrAutomatonBuilder]: Finished intersection with 453 states and 1312 transitions. [2020-04-18 19:39:31,895 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:32,014 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 29 times. [2020-04-18 19:39:32,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:39:32,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 19:39:32,016 INFO L87 Difference]: Start difference. First operand 1568 states and 4964 transitions. Second operand 6 states. [2020-04-18 19:39:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:32,087 INFO L93 Difference]: Finished difference Result 1568 states and 4964 transitions. [2020-04-18 19:39:32,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 4964 transitions. [2020-04-18 19:39:32,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:39:32,091 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [772993734] [2020-04-18 19:39:32,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:39:32,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:39:32,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [772993734] [2020-04-18 19:39:32,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 19:39:32,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:39:32,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:39:32,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 19:39:32,093 INFO L87 Difference]: Start difference. First operand 11336 states and 44756 transitions. Second operand 16 states. [2020-04-18 19:39:33,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:33,847 INFO L93 Difference]: Finished difference Result 22998 states and 89277 transitions. [2020-04-18 19:39:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-04-18 19:39:33,847 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-04-18 19:39:33,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:39:33,882 INFO L225 Difference]: With dead ends: 22998 [2020-04-18 19:39:33,882 INFO L226 Difference]: Without dead ends: 16982 [2020-04-18 19:39:33,885 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1507, Invalid=7235, Unknown=0, NotChecked=0, Total=8742 [2020-04-18 19:39:33,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16982 states. [2020-04-18 19:39:34,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16982 to 10972. [2020-04-18 19:39:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10972 states. [2020-04-18 19:39:34,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10972 states to 10972 states and 43116 transitions. [2020-04-18 19:39:34,165 INFO L78 Accepts]: Start accepts. Automaton has 10972 states and 43116 transitions. Word has length 48 [2020-04-18 19:39:34,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:39:34,165 INFO L479 AbstractCegarLoop]: Abstraction has 10972 states and 43116 transitions. [2020-04-18 19:39:34,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 19:39:34,166 INFO L276 IsEmpty]: Start isEmpty. Operand 10972 states and 43116 transitions. [2020-04-18 19:39:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:39:34,179 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:39:34,180 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:39:34,180 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:39:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:34,180 INFO L82 PathProgramCache]: Analyzing trace with hash -352681890, now seen corresponding path program 1 times [2020-04-18 19:39:34,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:39:34,180 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1202529475] [2020-04-18 19:39:34,182 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:34,491 INFO L259 McrAutomatonBuilder]: Finished intersection with 1624 states and 5753 transitions. [2020-04-18 19:39:34,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states. [2020-04-18 19:39:34,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:39:34,507 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:39:34,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:34,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1937841040, now seen corresponding path program 2 times [2020-04-18 19:39:34,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:34,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569646769] [2020-04-18 19:39:34,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:34,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569646769] [2020-04-18 19:39:34,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:34,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:34,626 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:34,630 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:34,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 301 states and 747 transitions. [2020-04-18 19:39:34,675 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:34,740 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:39:34,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:39:34,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:39:34,742 INFO L87 Difference]: Start difference. First operand 1624 states. Second operand 9 states. [2020-04-18 19:39:35,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:35,002 INFO L93 Difference]: Finished difference Result 1954 states and 6654 transitions. [2020-04-18 19:39:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 6654 transitions. [2020-04-18 19:39:35,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:39:35,004 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:39:35,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:35,005 INFO L82 PathProgramCache]: Analyzing trace with hash -551493326, now seen corresponding path program 3 times [2020-04-18 19:39:35,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:35,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462925711] [2020-04-18 19:39:35,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:35,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462925711] [2020-04-18 19:39:35,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:35,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:35,108 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:35,112 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:35,175 INFO L259 McrAutomatonBuilder]: Finished intersection with 447 states and 1221 transitions. [2020-04-18 19:39:35,175 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:35,230 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:39:35,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:39:35,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:39:35,231 INFO L87 Difference]: Start difference. First operand 1954 states and 6654 transitions. Second operand 10 states. [2020-04-18 19:39:35,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:35,437 INFO L93 Difference]: Finished difference Result 2208 states and 7208 transitions. [2020-04-18 19:39:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 7208 transitions. [2020-04-18 19:39:35,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:39:35,440 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:39:35,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:35,441 INFO L82 PathProgramCache]: Analyzing trace with hash -352681890, now seen corresponding path program 4 times [2020-04-18 19:39:35,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:35,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175455157] [2020-04-18 19:39:35,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:35,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175455157] [2020-04-18 19:39:35,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:35,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:39:35,543 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:35,548 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:35,622 INFO L259 McrAutomatonBuilder]: Finished intersection with 387 states and 1037 transitions. [2020-04-18 19:39:35,622 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:35,791 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 29 times. [2020-04-18 19:39:35,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:39:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:39:35,792 INFO L87 Difference]: Start difference. First operand 2208 states and 7208 transitions. Second operand 8 states. [2020-04-18 19:39:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:35,944 INFO L93 Difference]: Finished difference Result 2208 states and 7208 transitions. [2020-04-18 19:39:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 7208 transitions. [2020-04-18 19:39:35,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:39:35,947 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1202529475] [2020-04-18 19:39:35,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:39:35,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:39:35,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1202529475] [2020-04-18 19:39:35,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 19:39:35,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:39:35,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:39:35,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1367, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:39:35,949 INFO L87 Difference]: Start difference. First operand 10972 states and 43116 transitions. Second operand 18 states. [2020-04-18 19:39:37,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:37,672 INFO L93 Difference]: Finished difference Result 20561 states and 78880 transitions. [2020-04-18 19:39:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-04-18 19:39:37,673 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-04-18 19:39:37,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:39:37,705 INFO L225 Difference]: With dead ends: 20561 [2020-04-18 19:39:37,705 INFO L226 Difference]: Without dead ends: 14825 [2020-04-18 19:39:37,707 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3040 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1353, Invalid=7389, Unknown=0, NotChecked=0, Total=8742 [2020-04-18 19:39:37,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14825 states. [2020-04-18 19:39:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14825 to 9406. [2020-04-18 19:39:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9406 states. [2020-04-18 19:39:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9406 states to 9406 states and 36243 transitions. [2020-04-18 19:39:38,172 INFO L78 Accepts]: Start accepts. Automaton has 9406 states and 36243 transitions. Word has length 49 [2020-04-18 19:39:38,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:39:38,172 INFO L479 AbstractCegarLoop]: Abstraction has 9406 states and 36243 transitions. [2020-04-18 19:39:38,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 19:39:38,172 INFO L276 IsEmpty]: Start isEmpty. Operand 9406 states and 36243 transitions. [2020-04-18 19:39:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:39:38,183 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:39:38,183 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:39:38,183 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:39:38,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:38,184 INFO L82 PathProgramCache]: Analyzing trace with hash 969848715, now seen corresponding path program 1 times [2020-04-18 19:39:38,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:39:38,184 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1709520701] [2020-04-18 19:39:38,185 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:38,218 INFO L259 McrAutomatonBuilder]: Finished intersection with 2092 states and 7628 transitions. [2020-04-18 19:39:38,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states. [2020-04-18 19:39:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:39:38,237 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:39:38,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 771743455, now seen corresponding path program 2 times [2020-04-18 19:39:38,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:38,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839886453] [2020-04-18 19:39:38,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:38,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839886453] [2020-04-18 19:39:38,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:38,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:38,345 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:38,348 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:38,391 INFO L259 McrAutomatonBuilder]: Finished intersection with 312 states and 768 transitions. [2020-04-18 19:39:38,391 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:38,468 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:39:38,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:39:38,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:39:38,469 INFO L87 Difference]: Start difference. First operand 2092 states. Second operand 9 states. [2020-04-18 19:39:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:38,747 INFO L93 Difference]: Finished difference Result 2524 states and 8846 transitions. [2020-04-18 19:39:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 8846 transitions. [2020-04-18 19:39:38,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:39:38,751 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:39:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash 911789437, now seen corresponding path program 3 times [2020-04-18 19:39:38,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:38,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398477562] [2020-04-18 19:39:38,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:38,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:38,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398477562] [2020-04-18 19:39:38,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:38,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:39:38,838 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:38,845 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:38,940 INFO L259 McrAutomatonBuilder]: Finished intersection with 468 states and 1270 transitions. [2020-04-18 19:39:38,940 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:38,972 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:39:38,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:39:38,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:39:38,973 INFO L87 Difference]: Start difference. First operand 2524 states and 8846 transitions. Second operand 7 states. [2020-04-18 19:39:39,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:39,185 INFO L93 Difference]: Finished difference Result 3032 states and 10208 transitions. [2020-04-18 19:39:39,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 10208 transitions. [2020-04-18 19:39:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:39:39,192 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:39:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:39,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1514990639, now seen corresponding path program 4 times [2020-04-18 19:39:39,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:39,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520236977] [2020-04-18 19:39:39,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:39,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520236977] [2020-04-18 19:39:39,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:39,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:39,338 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:39,343 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:39,444 INFO L259 McrAutomatonBuilder]: Finished intersection with 438 states and 1190 transitions. [2020-04-18 19:39:39,444 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:39,609 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 36 times. [2020-04-18 19:39:39,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:39:39,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:39:39,611 INFO L87 Difference]: Start difference. First operand 3032 states and 10208 transitions. Second operand 9 states. [2020-04-18 19:39:39,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:39,881 INFO L93 Difference]: Finished difference Result 3032 states and 10208 transitions. [2020-04-18 19:39:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 10208 transitions. [2020-04-18 19:39:39,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:39:39,885 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1709520701] [2020-04-18 19:39:39,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:39:39,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:39:39,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1709520701] [2020-04-18 19:39:39,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 19:39:39,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:39:39,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:39:39,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1520, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 19:39:39,887 INFO L87 Difference]: Start difference. First operand 9406 states and 36243 transitions. Second operand 18 states. [2020-04-18 19:39:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:41,849 INFO L93 Difference]: Finished difference Result 14735 states and 55097 transitions. [2020-04-18 19:39:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-04-18 19:39:41,850 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 50 [2020-04-18 19:39:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:39:41,869 INFO L225 Difference]: With dead ends: 14735 [2020-04-18 19:39:41,869 INFO L226 Difference]: Without dead ends: 10163 [2020-04-18 19:39:41,871 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2643 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1066, Invalid=6590, Unknown=0, NotChecked=0, Total=7656 [2020-04-18 19:39:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2020-04-18 19:39:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 6499. [2020-04-18 19:39:41,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6499 states. [2020-04-18 19:39:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 24096 transitions. [2020-04-18 19:39:42,015 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 24096 transitions. Word has length 50 [2020-04-18 19:39:42,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:39:42,015 INFO L479 AbstractCegarLoop]: Abstraction has 6499 states and 24096 transitions. [2020-04-18 19:39:42,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 19:39:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 24096 transitions. [2020-04-18 19:39:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 19:39:42,026 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:39:42,027 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:39:42,027 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:39:42,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:42,027 INFO L82 PathProgramCache]: Analyzing trace with hash 525596606, now seen corresponding path program 1 times [2020-04-18 19:39:42,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:39:42,028 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [145171668] [2020-04-18 19:39:42,030 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:42,106 INFO L259 McrAutomatonBuilder]: Finished intersection with 3436 states and 13060 transitions. [2020-04-18 19:39:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states. [2020-04-18 19:39:42,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 19:39:42,133 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:39:42,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:42,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1293677184, now seen corresponding path program 2 times [2020-04-18 19:39:42,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:42,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402252638] [2020-04-18 19:39:42,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:42,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402252638] [2020-04-18 19:39:42,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:42,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:42,236 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:42,242 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:42,303 INFO L259 McrAutomatonBuilder]: Finished intersection with 336 states and 830 transitions. [2020-04-18 19:39:42,303 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:42,351 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:39:42,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:39:42,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:39:42,351 INFO L87 Difference]: Start difference. First operand 3436 states. Second operand 8 states. [2020-04-18 19:39:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:42,669 INFO L93 Difference]: Finished difference Result 4692 states and 16766 transitions. [2020-04-18 19:39:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 16766 transitions. [2020-04-18 19:39:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 19:39:42,678 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:39:42,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:42,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1144296278, now seen corresponding path program 3 times [2020-04-18 19:39:42,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:42,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676121582] [2020-04-18 19:39:42,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:42,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676121582] [2020-04-18 19:39:42,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:42,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:42,776 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:42,781 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:42,864 INFO L259 McrAutomatonBuilder]: Finished intersection with 414 states and 1103 transitions. [2020-04-18 19:39:42,864 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:42,894 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:39:42,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:39:42,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:39:42,894 INFO L87 Difference]: Start difference. First operand 4692 states and 16766 transitions. Second operand 8 states. [2020-04-18 19:39:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:43,325 INFO L93 Difference]: Finished difference Result 7780 states and 26946 transitions. [2020-04-18 19:39:43,325 INFO L276 IsEmpty]: Start isEmpty. Operand 7780 states and 26946 transitions. [2020-04-18 19:39:43,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 19:39:43,347 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:39:43,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:43,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2133134574, now seen corresponding path program 4 times [2020-04-18 19:39:43,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:43,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467760179] [2020-04-18 19:39:43,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:43,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467760179] [2020-04-18 19:39:43,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:43,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:39:43,440 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:43,446 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:43,542 INFO L259 McrAutomatonBuilder]: Finished intersection with 410 states and 1080 transitions. [2020-04-18 19:39:43,543 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:43,586 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 19:39:43,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:39:43,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:39:43,588 INFO L87 Difference]: Start difference. First operand 7780 states and 26946 transitions. Second operand 7 states. [2020-04-18 19:39:43,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:43,806 INFO L93 Difference]: Finished difference Result 11352 states and 37932 transitions. [2020-04-18 19:39:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 11352 states and 37932 transitions. [2020-04-18 19:39:43,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 19:39:43,819 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:39:43,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:43,820 INFO L82 PathProgramCache]: Analyzing trace with hash 401308048, now seen corresponding path program 5 times [2020-04-18 19:39:43,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:43,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129320167] [2020-04-18 19:39:43,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:43,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129320167] [2020-04-18 19:39:43,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:43,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 19:39:43,930 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:43,935 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:44,004 INFO L259 McrAutomatonBuilder]: Finished intersection with 330 states and 796 transitions. [2020-04-18 19:39:44,004 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:44,199 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:39:44,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:39:44,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1914, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 19:39:44,200 INFO L87 Difference]: Start difference. First operand 11352 states and 37932 transitions. Second operand 9 states. [2020-04-18 19:39:44,597 WARN L192 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2020-04-18 19:39:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:45,035 INFO L93 Difference]: Finished difference Result 11352 states and 37932 transitions. [2020-04-18 19:39:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 11352 states and 37932 transitions. [2020-04-18 19:39:45,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:39:45,062 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [145171668] [2020-04-18 19:39:45,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:39:45,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-04-18 19:39:45,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [145171668] [2020-04-18 19:39:45,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 19:39:45,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:39:45,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:39:45,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=2969, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 19:39:45,066 INFO L87 Difference]: Start difference. First operand 6499 states and 24096 transitions. Second operand 19 states. [2020-04-18 19:39:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:46,720 INFO L93 Difference]: Finished difference Result 7760 states and 28258 transitions. [2020-04-18 19:39:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-04-18 19:39:46,720 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-04-18 19:39:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:39:46,725 INFO L225 Difference]: With dead ends: 7760 [2020-04-18 19:39:46,725 INFO L226 Difference]: Without dead ends: 2371 [2020-04-18 19:39:46,728 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4115 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1157, Invalid=9973, Unknown=0, NotChecked=0, Total=11130 [2020-04-18 19:39:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-04-18 19:39:46,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2371. [2020-04-18 19:39:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2371 states. [2020-04-18 19:39:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 8287 transitions. [2020-04-18 19:39:46,760 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 8287 transitions. Word has length 52 [2020-04-18 19:39:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:39:46,760 INFO L479 AbstractCegarLoop]: Abstraction has 2371 states and 8287 transitions. [2020-04-18 19:39:46,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 19:39:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 8287 transitions. [2020-04-18 19:39:46,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:39:46,764 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:39:46,764 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:39:46,764 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:39:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:46,764 INFO L82 PathProgramCache]: Analyzing trace with hash -2067083925, now seen corresponding path program 1 times [2020-04-18 19:39:46,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:39:46,765 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2092559318] [2020-04-18 19:39:46,767 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:46,871 INFO L259 McrAutomatonBuilder]: Finished intersection with 5716 states and 22516 transitions. [2020-04-18 19:39:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states. [2020-04-18 19:39:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:39:46,917 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:39:46,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:46,918 INFO L82 PathProgramCache]: Analyzing trace with hash 535064513, now seen corresponding path program 2 times [2020-04-18 19:39:46,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:46,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477819601] [2020-04-18 19:39:46,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:47,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477819601] [2020-04-18 19:39:47,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:47,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:47,025 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:47,030 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:47,111 INFO L259 McrAutomatonBuilder]: Finished intersection with 524 states and 1436 transitions. [2020-04-18 19:39:47,112 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:47,201 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:39:47,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:39:47,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:39:47,203 INFO L87 Difference]: Start difference. First operand 5716 states. Second operand 9 states. [2020-04-18 19:39:47,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:47,876 INFO L93 Difference]: Finished difference Result 9868 states and 37376 transitions. [2020-04-18 19:39:47,876 INFO L276 IsEmpty]: Start isEmpty. Operand 9868 states and 37376 transitions. [2020-04-18 19:39:47,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:39:47,890 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:39:47,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:47,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1876105505, now seen corresponding path program 3 times [2020-04-18 19:39:47,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:47,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671456619] [2020-04-18 19:39:47,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:47,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671456619] [2020-04-18 19:39:47,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:47,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:47,982 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:47,986 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:48,046 INFO L259 McrAutomatonBuilder]: Finished intersection with 400 states and 1006 transitions. [2020-04-18 19:39:48,047 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:48,068 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:39:48,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:39:48,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:39:48,069 INFO L87 Difference]: Start difference. First operand 9868 states and 37376 transitions. Second operand 8 states. [2020-04-18 19:39:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:48,700 INFO L93 Difference]: Finished difference Result 15956 states and 58546 transitions. [2020-04-18 19:39:48,700 INFO L276 IsEmpty]: Start isEmpty. Operand 15956 states and 58546 transitions. [2020-04-18 19:39:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:39:48,720 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:39:48,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:48,720 INFO L82 PathProgramCache]: Analyzing trace with hash 415874987, now seen corresponding path program 4 times [2020-04-18 19:39:48,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:48,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689021643] [2020-04-18 19:39:48,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:48,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689021643] [2020-04-18 19:39:48,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:48,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:39:48,821 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:48,827 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:48,894 INFO L259 McrAutomatonBuilder]: Finished intersection with 312 states and 738 transitions. [2020-04-18 19:39:48,894 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:48,923 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:39:48,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:39:48,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:39:48,924 INFO L87 Difference]: Start difference. First operand 15956 states and 58546 transitions. Second operand 9 states. [2020-04-18 19:39:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:49,558 INFO L93 Difference]: Finished difference Result 33004 states and 118920 transitions. [2020-04-18 19:39:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 33004 states and 118920 transitions. [2020-04-18 19:39:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:39:49,598 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:39:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:49,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1529438481, now seen corresponding path program 5 times [2020-04-18 19:39:49,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:49,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35181604] [2020-04-18 19:39:49,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:49,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35181604] [2020-04-18 19:39:49,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:49,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:39:49,667 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:49,673 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:49,754 INFO L259 McrAutomatonBuilder]: Finished intersection with 348 states and 825 transitions. [2020-04-18 19:39:49,754 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:49,848 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:39:49,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:39:49,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=2111, Unknown=0, NotChecked=0, Total=2652 [2020-04-18 19:39:49,850 INFO L87 Difference]: Start difference. First operand 33004 states and 118920 transitions. Second operand 8 states. [2020-04-18 19:39:50,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:50,159 INFO L93 Difference]: Finished difference Result 42732 states and 149936 transitions. [2020-04-18 19:39:50,159 INFO L276 IsEmpty]: Start isEmpty. Operand 42732 states and 149936 transitions. [2020-04-18 19:39:50,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:39:50,217 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:39:50,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:39:50,218 INFO L82 PathProgramCache]: Analyzing trace with hash 725958319, now seen corresponding path program 6 times [2020-04-18 19:39:50,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:39:50,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599436565] [2020-04-18 19:39:50,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:39:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:39:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:39:50,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599436565] [2020-04-18 19:39:50,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:39:50,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 19:39:50,348 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:39:50,352 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:39:50,410 INFO L259 McrAutomatonBuilder]: Finished intersection with 348 states and 835 transitions. [2020-04-18 19:39:50,410 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:39:50,692 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:39:50,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:39:50,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=3282, Unknown=0, NotChecked=0, Total=3906 [2020-04-18 19:39:50,698 INFO L87 Difference]: Start difference. First operand 42732 states and 149936 transitions. Second operand 9 states. [2020-04-18 19:39:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:51,661 INFO L93 Difference]: Finished difference Result 43001 states and 150192 transitions. [2020-04-18 19:39:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 43001 states and 150192 transitions. [2020-04-18 19:39:51,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:39:51,711 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2092559318] [2020-04-18 19:39:51,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:39:51,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-04-18 19:39:51,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2092559318] [2020-04-18 19:39:51,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 19:39:51,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:39:51,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 19:39:51,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=4943, Unknown=0, NotChecked=0, Total=5700 [2020-04-18 19:39:51,713 INFO L87 Difference]: Start difference. First operand 2371 states and 8287 transitions. Second operand 23 states. [2020-04-18 19:39:51,990 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2020-04-18 19:39:52,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:39:52,727 INFO L93 Difference]: Finished difference Result 2209 states and 7693 transitions. [2020-04-18 19:39:52,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-18 19:39:52,728 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 54 [2020-04-18 19:39:52,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:39:52,728 INFO L225 Difference]: With dead ends: 2209 [2020-04-18 19:39:52,728 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:39:52,729 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3754 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1212, Invalid=8888, Unknown=0, NotChecked=0, Total=10100 [2020-04-18 19:39:52,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:39:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:39:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:39:52,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:39:52,730 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-04-18 19:39:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:39:52,730 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:39:52,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 19:39:52,730 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:39:52,730 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:39:52,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:39:52 BasicIcfg [2020-04-18 19:39:52,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:39:52,736 INFO L168 Benchmark]: Toolchain (without parser) took 44010.06 ms. Allocated memory was 138.4 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 100.8 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 551.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:39:52,736 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 19:39:52,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.42 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 98.9 MB in the beginning and 156.0 MB in the end (delta: -57.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:39:52,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.90 ms. Allocated memory is still 201.9 MB. Free memory was 156.0 MB in the beginning and 154.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:39:52,738 INFO L168 Benchmark]: Boogie Preprocessor took 25.15 ms. Allocated memory is still 201.9 MB. Free memory was 154.0 MB in the beginning and 152.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:39:52,738 INFO L168 Benchmark]: RCFGBuilder took 470.14 ms. Allocated memory is still 201.9 MB. Free memory was 152.0 MB in the beginning and 127.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:39:52,739 INFO L168 Benchmark]: TraceAbstraction took 42678.02 ms. Allocated memory was 201.9 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 127.9 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 514.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:39:52,741 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 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.42 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 98.9 MB in the beginning and 156.0 MB in the end (delta: -57.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.90 ms. Allocated memory is still 201.9 MB. Free memory was 156.0 MB in the beginning and 154.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.15 ms. Allocated memory is still 201.9 MB. Free memory was 154.0 MB in the beginning and 152.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.14 ms. Allocated memory is still 201.9 MB. Free memory was 152.0 MB in the beginning and 127.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42678.02 ms. Allocated memory was 201.9 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 127.9 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 514.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 42.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 1252 SDtfs, 7071 SDslu, 9467 SDs, 0 SdLazy, 2255 SolverSat, 869 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2194 GetRequests, 1608 SyntacticMatches, 0 SemanticMatches, 586 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17393 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47252occurred 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: 6.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 35477 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...