/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:12:07,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:12:07,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:12:07,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:12:07,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:12:07,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:12:07,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:12:07,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:12:07,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:12:07,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:12:07,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:12:07,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:12:07,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:12:07,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:12:07,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:12:07,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:12:07,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:12:07,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:12:07,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:12:07,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:12:07,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:12:07,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:12:07,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:12:07,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:12:07,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 22:12:07,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 22:12:07,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 22:12:07,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 22:12:07,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 22:12:07,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 22:12:07,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:12:07,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:12:07,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:12:07,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:12:07,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:12:07,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:12:07,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:12:07,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:12:07,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:12:07,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:12:07,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:12:07,456 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-SemanticLbe.epf [2020-10-15 22:12:07,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:12:07,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:12:07,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:12:07,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:12:07,479 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:12:07,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:12:07,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:12:07,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:12:07,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:12:07,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:12:07,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:12:07,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:12:07,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:12:07,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:12:07,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:12:07,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:12:07,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:12:07,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:12:07,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:12:07,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:12:07,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:12:07,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:12:07,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:12:07,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:12:07,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:12:07,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:12:07,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:12:07,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:12:07,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:12:07,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:12:07,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:12:07,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:12:07,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:12:07,792 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:12:07,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-15 22:12:07,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7eb07f7/75c872ab41084ff48e99b6a3ce85a85e/FLAG3fda83c33 [2020-10-15 22:12:08,364 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:12:08,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-15 22:12:08,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7eb07f7/75c872ab41084ff48e99b6a3ce85a85e/FLAG3fda83c33 [2020-10-15 22:12:08,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7eb07f7/75c872ab41084ff48e99b6a3ce85a85e [2020-10-15 22:12:08,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:12:08,649 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:12:08,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:12:08,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:12:08,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:12:08,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732d236d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:08, skipping insertion in model container [2020-10-15 22:12:08,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:12:08" (1/1) ... [2020-10-15 22:12:08,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:12:08,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:12:09,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:12:09,176 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:12:09,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:12:09,294 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:12:09,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09 WrapperNode [2020-10-15 22:12:09,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:12:09,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:12:09,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:12:09,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:12:09,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09" (1/1) ... [2020-10-15 22:12:09,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09" (1/1) ... [2020-10-15 22:12:09,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:12:09,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:12:09,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:12:09,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:12:09,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09" (1/1) ... [2020-10-15 22:12:09,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09" (1/1) ... [2020-10-15 22:12:09,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09" (1/1) ... [2020-10-15 22:12:09,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09" (1/1) ... [2020-10-15 22:12:09,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09" (1/1) ... [2020-10-15 22:12:09,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09" (1/1) ... [2020-10-15 22:12:09,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09" (1/1) ... [2020-10-15 22:12:09,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:12:09,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:12:09,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:12:09,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:12:09,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09" (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 [2020-10-15 22:12:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:12:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:12:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:12:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:12:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:12:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:12:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:12:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:12:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:12:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:12:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-15 22:12:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-15 22:12:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:12:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:12:09,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:12:09,437 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:12:09,773 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:12:09,773 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:12:09,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:12:09 BoogieIcfgContainer [2020-10-15 22:12:09,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:12:09,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:12:09,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:12:09,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:12:09,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:12:08" (1/3) ... [2020-10-15 22:12:09,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58748d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:12:09, skipping insertion in model container [2020-10-15 22:12:09,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:12:09" (2/3) ... [2020-10-15 22:12:09,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58748d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:12:09, skipping insertion in model container [2020-10-15 22:12:09,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:12:09" (3/3) ... [2020-10-15 22:12:09,783 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-10-15 22:12:09,794 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:12:09,794 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:12:09,801 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:12:09,802 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:12:09,830 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,830 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,831 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,831 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,832 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,832 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,833 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,834 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,834 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,834 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,834 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,834 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,835 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,835 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,835 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,835 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,836 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,836 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,836 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,840 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,840 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,840 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,840 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,847 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,847 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:12:09,870 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 22:12:09,890 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:12:09,891 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:12:09,891 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:12:09,891 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:12:09,891 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:12:09,891 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:12:09,891 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:12:09,891 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:12:09,903 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:12:09,905 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-15 22:12:09,907 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-15 22:12:09,909 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-15 22:12:09,953 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-15 22:12:09,953 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:12:09,959 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-15 22:12:09,962 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-15 22:12:11,405 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-15 22:12:11,406 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-15 22:12:11,412 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-15 22:12:11,473 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-15 22:12:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-15 22:12:11,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:12:11,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:11,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:11,488 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:11,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:11,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-15 22:12:11,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:11,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185438504] [2020-10-15 22:12:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:11,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185438504] [2020-10-15 22:12:11,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:11,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:11,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344419745] [2020-10-15 22:12:11,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 22:12:11,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:11,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 22:12:11,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:12:11,702 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-15 22:12:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:11,775 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-15 22:12:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 22:12:11,777 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-15 22:12:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:11,805 INFO L225 Difference]: With dead ends: 850 [2020-10-15 22:12:11,806 INFO L226 Difference]: Without dead ends: 706 [2020-10-15 22:12:11,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:12:11,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-15 22:12:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-15 22:12:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-15 22:12:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-15 22:12:11,951 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-15 22:12:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:11,952 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-15 22:12:11,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 22:12:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-15 22:12:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:12:11,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:11,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:11,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:12:11,959 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:11,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:11,959 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-15 22:12:11,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:11,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049543629] [2020-10-15 22:12:11,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049543629] [2020-10-15 22:12:12,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:12,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759157004] [2020-10-15 22:12:12,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:12,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:12,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:12,083 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-15 22:12:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,127 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-15 22:12:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:12,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 22:12:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,134 INFO L225 Difference]: With dead ends: 802 [2020-10-15 22:12:12,134 INFO L226 Difference]: Without dead ends: 658 [2020-10-15 22:12:12,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-15 22:12:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-15 22:12:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-15 22:12:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-15 22:12:12,166 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-15 22:12:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,167 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-15 22:12:12,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-15 22:12:12,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:12:12,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:12:12,170 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-10-15 22:12:12,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413197179] [2020-10-15 22:12:12,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413197179] [2020-10-15 22:12:12,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:12,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093996186] [2020-10-15 22:12:12,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:12,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:12,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:12,276 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-15 22:12:12,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,305 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-10-15 22:12:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:12,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 22:12:12,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,310 INFO L225 Difference]: With dead ends: 718 [2020-10-15 22:12:12,310 INFO L226 Difference]: Without dead ends: 598 [2020-10-15 22:12:12,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-15 22:12:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-15 22:12:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-15 22:12:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-10-15 22:12:12,333 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-10-15 22:12:12,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,333 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-10-15 22:12:12,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-10-15 22:12:12,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:12:12,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:12:12,336 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-10-15 22:12:12,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573638067] [2020-10-15 22:12:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573638067] [2020-10-15 22:12:12,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:12,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934310452] [2020-10-15 22:12:12,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:12,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:12,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:12,436 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-10-15 22:12:12,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,492 INFO L93 Difference]: Finished difference Result 668 states and 2153 transitions. [2020-10-15 22:12:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:12,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 22:12:12,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,500 INFO L225 Difference]: With dead ends: 668 [2020-10-15 22:12:12,500 INFO L226 Difference]: Without dead ends: 578 [2020-10-15 22:12:12,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-15 22:12:12,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-10-15 22:12:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-15 22:12:12,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-10-15 22:12:12,529 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-10-15 22:12:12,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,530 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-10-15 22:12:12,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:12,530 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-10-15 22:12:12,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:12:12,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:12:12,532 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,532 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-10-15 22:12:12,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94138422] [2020-10-15 22:12:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94138422] [2020-10-15 22:12:12,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:12:12,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430796729] [2020-10-15 22:12:12,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:12,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:12,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:12,616 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-10-15 22:12:12,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,653 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-10-15 22:12:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:12,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 22:12:12,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,659 INFO L225 Difference]: With dead ends: 814 [2020-10-15 22:12:12,659 INFO L226 Difference]: Without dead ends: 618 [2020-10-15 22:12:12,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-15 22:12:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-10-15 22:12:12,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-15 22:12:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-10-15 22:12:12,680 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-10-15 22:12:12,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,680 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-10-15 22:12:12,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-10-15 22:12:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:12:12,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:12:12,682 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-10-15 22:12:12,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943706568] [2020-10-15 22:12:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943706568] [2020-10-15 22:12:12,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:12:12,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609098839] [2020-10-15 22:12:12,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:12,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:12,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:12,726 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 4 states. [2020-10-15 22:12:12,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,749 INFO L93 Difference]: Finished difference Result 562 states and 1746 transitions. [2020-10-15 22:12:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:12,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 22:12:12,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,753 INFO L225 Difference]: With dead ends: 562 [2020-10-15 22:12:12,753 INFO L226 Difference]: Without dead ends: 514 [2020-10-15 22:12:12,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-15 22:12:12,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-10-15 22:12:12,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-15 22:12:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1618 transitions. [2020-10-15 22:12:12,771 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1618 transitions. Word has length 14 [2020-10-15 22:12:12,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,771 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 1618 transitions. [2020-10-15 22:12:12,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1618 transitions. [2020-10-15 22:12:12,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:12:12,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:12:12,773 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-10-15 22:12:12,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028138559] [2020-10-15 22:12:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028138559] [2020-10-15 22:12:12,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:12:12,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236830377] [2020-10-15 22:12:12,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:12:12,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:12:12,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,820 INFO L87 Difference]: Start difference. First operand 514 states and 1618 transitions. Second operand 5 states. [2020-10-15 22:12:12,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,857 INFO L93 Difference]: Finished difference Result 778 states and 2412 transitions. [2020-10-15 22:12:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:12,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-15 22:12:12,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,861 INFO L225 Difference]: With dead ends: 778 [2020-10-15 22:12:12,861 INFO L226 Difference]: Without dead ends: 418 [2020-10-15 22:12:12,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:12:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-15 22:12:12,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-10-15 22:12:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-15 22:12:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1276 transitions. [2020-10-15 22:12:12,877 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1276 transitions. Word has length 15 [2020-10-15 22:12:12,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,877 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1276 transitions. [2020-10-15 22:12:12,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:12:12,877 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1276 transitions. [2020-10-15 22:12:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:12:12,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:12:12,879 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,880 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 2 times [2020-10-15 22:12:12,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67195768] [2020-10-15 22:12:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:12,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67195768] [2020-10-15 22:12:12,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:12,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:12:12,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995620475] [2020-10-15 22:12:12,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:12,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:12,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:12,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:12,920 INFO L87 Difference]: Start difference. First operand 418 states and 1276 transitions. Second operand 4 states. [2020-10-15 22:12:12,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:12,948 INFO L93 Difference]: Finished difference Result 598 states and 1736 transitions. [2020-10-15 22:12:12,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:12,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 22:12:12,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:12,952 INFO L225 Difference]: With dead ends: 598 [2020-10-15 22:12:12,952 INFO L226 Difference]: Without dead ends: 442 [2020-10-15 22:12:12,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:12,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-15 22:12:12,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 394. [2020-10-15 22:12:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-15 22:12:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2020-10-15 22:12:12,966 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2020-10-15 22:12:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:12,967 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2020-10-15 22:12:12,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2020-10-15 22:12:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:12:12,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:12,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:12,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:12:12,969 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:12,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:12,969 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-10-15 22:12:12,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:12,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820704512] [2020-10-15 22:12:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:13,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820704512] [2020-10-15 22:12:13,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:13,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:12:13,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427142373] [2020-10-15 22:12:13,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:12:13,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:13,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:12:13,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:13,015 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 5 states. [2020-10-15 22:12:13,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:13,049 INFO L93 Difference]: Finished difference Result 542 states and 1518 transitions. [2020-10-15 22:12:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:13,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-15 22:12:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:13,052 INFO L225 Difference]: With dead ends: 542 [2020-10-15 22:12:13,052 INFO L226 Difference]: Without dead ends: 254 [2020-10-15 22:12:13,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:12:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-15 22:12:13,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-15 22:12:13,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-15 22:12:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-10-15 22:12:13,061 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-10-15 22:12:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:13,061 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-10-15 22:12:13,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:12:13,061 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-10-15 22:12:13,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:12:13,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:13,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:13,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:12:13,063 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:13,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:13,063 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-10-15 22:12:13,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:13,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750200325] [2020-10-15 22:12:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:13,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750200325] [2020-10-15 22:12:13,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:13,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:12:13,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226232630] [2020-10-15 22:12:13,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:12:13,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:13,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:12:13,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:12:13,133 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 4 states. [2020-10-15 22:12:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:13,162 INFO L93 Difference]: Finished difference Result 302 states and 756 transitions. [2020-10-15 22:12:13,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:12:13,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 22:12:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:13,165 INFO L225 Difference]: With dead ends: 302 [2020-10-15 22:12:13,165 INFO L226 Difference]: Without dead ends: 229 [2020-10-15 22:12:13,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:13,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-15 22:12:13,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-10-15 22:12:13,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-15 22:12:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 581 transitions. [2020-10-15 22:12:13,173 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 581 transitions. Word has length 15 [2020-10-15 22:12:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:13,174 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 581 transitions. [2020-10-15 22:12:13,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:12:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 581 transitions. [2020-10-15 22:12:13,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 22:12:13,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:13,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:13,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 22:12:13,175 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:13,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-15 22:12:13,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:13,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458896680] [2020-10-15 22:12:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:13,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458896680] [2020-10-15 22:12:13,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:13,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:12:13,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188473017] [2020-10-15 22:12:13,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:12:13,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:13,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:12:13,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:13,231 INFO L87 Difference]: Start difference. First operand 229 states and 581 transitions. Second operand 5 states. [2020-10-15 22:12:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:13,272 INFO L93 Difference]: Finished difference Result 227 states and 514 transitions. [2020-10-15 22:12:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:12:13,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-15 22:12:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:13,274 INFO L225 Difference]: With dead ends: 227 [2020-10-15 22:12:13,275 INFO L226 Difference]: Without dead ends: 171 [2020-10-15 22:12:13,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:12:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-15 22:12:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-15 22:12:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-15 22:12:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-10-15 22:12:13,281 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 16 [2020-10-15 22:12:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:13,281 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-10-15 22:12:13,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:12:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-10-15 22:12:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:12:13,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:13,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:13,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 22:12:13,283 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:13,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:13,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-15 22:12:13,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:13,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130289031] [2020-10-15 22:12:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:13,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130289031] [2020-10-15 22:12:13,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:13,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 22:12:13,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050691423] [2020-10-15 22:12:13,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:12:13,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:13,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:12:13,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:12:13,338 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-10-15 22:12:13,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:13,388 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-10-15 22:12:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:12:13,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-15 22:12:13,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:13,390 INFO L225 Difference]: With dead ends: 147 [2020-10-15 22:12:13,390 INFO L226 Difference]: Without dead ends: 107 [2020-10-15 22:12:13,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:12:13,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-15 22:12:13,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-15 22:12:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-15 22:12:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-10-15 22:12:13,394 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-10-15 22:12:13,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:13,394 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-10-15 22:12:13,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:12:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-10-15 22:12:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 22:12:13,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:13,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:13,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 22:12:13,395 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:13,396 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-15 22:12:13,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:13,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058650570] [2020-10-15 22:12:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:13,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058650570] [2020-10-15 22:12:13,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:13,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:12:13,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474067361] [2020-10-15 22:12:13,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:12:13,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:13,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:12:13,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:12:13,436 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-10-15 22:12:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:13,465 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-10-15 22:12:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:12:13,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-15 22:12:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:13,466 INFO L225 Difference]: With dead ends: 121 [2020-10-15 22:12:13,466 INFO L226 Difference]: Without dead ends: 105 [2020-10-15 22:12:13,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:12:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-15 22:12:13,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-15 22:12:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-15 22:12:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-10-15 22:12:13,470 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-10-15 22:12:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:13,471 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-10-15 22:12:13,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:12:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-10-15 22:12:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 22:12:13,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:12:13,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:12:13,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 22:12:13,472 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:12:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:12:13,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-15 22:12:13,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:12:13,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560670280] [2020-10-15 22:12:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:12:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:12:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:12:13,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560670280] [2020-10-15 22:12:13,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:12:13,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 22:12:13,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178347996] [2020-10-15 22:12:13,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 22:12:13,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:12:13,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 22:12:13,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:12:13,538 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 7 states. [2020-10-15 22:12:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:12:13,576 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-10-15 22:12:13,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:12:13,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 22:12:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:12:13,576 INFO L225 Difference]: With dead ends: 93 [2020-10-15 22:12:13,576 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:12:13,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:12:13,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:12:13,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:12:13,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:12:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:12:13,578 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-15 22:12:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:12:13,578 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:12:13,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 22:12:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:12:13,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:12:13,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 22:12:13,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:12:13 BasicIcfg [2020-10-15 22:12:13,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:12:13,584 INFO L168 Benchmark]: Toolchain (without parser) took 4934.59 ms. Allocated memory was 248.5 MB in the beginning and 433.6 MB in the end (delta: 185.1 MB). Free memory was 203.9 MB in the beginning and 315.8 MB in the end (delta: -111.9 MB). Peak memory consumption was 73.1 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:13,584 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:12:13,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.38 ms. Allocated memory was 248.5 MB in the beginning and 305.1 MB in the end (delta: 56.6 MB). Free memory was 203.9 MB in the beginning and 258.0 MB in the end (delta: -54.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:13,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.79 ms. Allocated memory is still 305.1 MB. Free memory was 258.0 MB in the beginning and 255.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:13,586 INFO L168 Benchmark]: Boogie Preprocessor took 24.49 ms. Allocated memory is still 305.1 MB. Free memory is still 255.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:12:13,587 INFO L168 Benchmark]: RCFGBuilder took 408.50 ms. Allocated memory is still 305.1 MB. Free memory was 255.5 MB in the beginning and 231.1 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:13,588 INFO L168 Benchmark]: TraceAbstraction took 3805.47 ms. Allocated memory was 305.1 MB in the beginning and 433.6 MB in the end (delta: 128.5 MB). Free memory was 231.1 MB in the beginning and 315.8 MB in the end (delta: -84.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 14.2 GB. [2020-10-15 22:12:13,591 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 644.38 ms. Allocated memory was 248.5 MB in the beginning and 305.1 MB in the end (delta: 56.6 MB). Free memory was 203.9 MB in the beginning and 258.0 MB in the end (delta: -54.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.79 ms. Allocated memory is still 305.1 MB. Free memory was 258.0 MB in the beginning and 255.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.49 ms. Allocated memory is still 305.1 MB. Free memory is still 255.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 408.50 ms. Allocated memory is still 305.1 MB. Free memory was 255.5 MB in the beginning and 231.1 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3805.47 ms. Allocated memory was 305.1 MB in the beginning and 433.6 MB in the end (delta: 128.5 MB). Free memory was 231.1 MB in the beginning and 315.8 MB in the end (delta: -84.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1223 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 103 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 369 SDtfs, 330 SDslu, 594 SDs, 0 SdLazy, 226 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 8005 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...