/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:36:25,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:36:25,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:36:25,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:36:25,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:36:25,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:36:25,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:36:25,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:36:25,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:36:25,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:36:25,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:36:25,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:36:25,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:36:25,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:36:25,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:36:25,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:36:25,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:36:25,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:36:25,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:36:25,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:36:25,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:36:25,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:36:25,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:36:25,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:36:25,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:36:25,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:36:25,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:36:25,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:36:25,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:36:25,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:36:25,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:36:25,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:36:25,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:36:25,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:36:25,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:36:25,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:36:25,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:36:25,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:36:25,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:36:25,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:36:25,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:36:25,492 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-McrStrategy.epf [2020-04-18 07:36:25,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:36:25,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:36:25,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:36:25,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:36:25,509 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:36:25,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:36:25,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:36:25,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:36:25,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:36:25,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:36:25,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:36:25,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:36:25,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:36:25,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:36:25,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:36:25,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:36:25,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:36:25,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:36:25,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:36:25,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:36:25,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:36:25,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:36:25,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:36:25,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:36:25,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:36:25,513 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 07:36:25,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:36:25,513 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 07:36:25,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:36:25,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:36:25,783 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:36:25,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:36:25,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:36:25,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:36:25,800 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:36:25,800 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-04-18 07:36:25,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3934fcfbd/9d677662f0fc4eac952d8cbb4cb50561/FLAG01cda005c [2020-04-18 07:36:26,398 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:36:26,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-04-18 07:36:26,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3934fcfbd/9d677662f0fc4eac952d8cbb4cb50561/FLAG01cda005c [2020-04-18 07:36:26,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3934fcfbd/9d677662f0fc4eac952d8cbb4cb50561 [2020-04-18 07:36:26,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:36:26,731 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:36:26,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:36:26,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:36:26,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:36:26,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:36:26" (1/1) ... [2020-04-18 07:36:26,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d6d203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:26, skipping insertion in model container [2020-04-18 07:36:26,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:36:26" (1/1) ... [2020-04-18 07:36:26,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:36:26,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:36:27,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:36:27,300 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:36:27,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:36:27,425 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:36:27,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27 WrapperNode [2020-04-18 07:36:27,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:36:27,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:36:27,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:36:27,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:36:27,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27" (1/1) ... [2020-04-18 07:36:27,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27" (1/1) ... [2020-04-18 07:36:27,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:36:27,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:36:27,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:36:27,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:36:27,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27" (1/1) ... [2020-04-18 07:36:27,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27" (1/1) ... [2020-04-18 07:36:27,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27" (1/1) ... [2020-04-18 07:36:27,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27" (1/1) ... [2020-04-18 07:36:27,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27" (1/1) ... [2020-04-18 07:36:27,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27" (1/1) ... [2020-04-18 07:36:27,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27" (1/1) ... [2020-04-18 07:36:27,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:36:27,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:36:27,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:36:27,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:36:27,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:36:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 07:36:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-04-18 07:36:27,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-04-18 07:36:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 07:36:27,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 07:36:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:36:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:36:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:36:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:36:27,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:36:27,586 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 07:36:28,014 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:36:28,014 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-04-18 07:36:28,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:36:28 BoogieIcfgContainer [2020-04-18 07:36:28,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:36:28,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:36:28,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:36:28,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:36:28,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:36:26" (1/3) ... [2020-04-18 07:36:28,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70938bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:36:28, skipping insertion in model container [2020-04-18 07:36:28,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:27" (2/3) ... [2020-04-18 07:36:28,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70938bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:36:28, skipping insertion in model container [2020-04-18 07:36:28,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:36:28" (3/3) ... [2020-04-18 07:36:28,031 INFO L109 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-04-18 07:36:28,040 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:36:28,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:36:28,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 07:36:28,048 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:36:28,074 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,075 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,075 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,075 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,076 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,076 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,077 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,078 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,078 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,078 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,079 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,079 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,083 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,084 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,084 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,084 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,090 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,090 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,090 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,091 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:28,114 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 07:36:28,135 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:36:28,135 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:36:28,135 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:36:28,135 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:36:28,135 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:36:28,136 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:36:28,136 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:36:28,136 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:36:28,153 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 103 transitions, 228 flow [2020-04-18 07:36:28,156 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-04-18 07:36:28,204 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-04-18 07:36:28,205 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 07:36:28,212 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-04-18 07:36:28,217 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-04-18 07:36:28,245 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-04-18 07:36:28,245 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 07:36:28,250 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-04-18 07:36:28,255 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3196 [2020-04-18 07:36:28,257 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:36:29,604 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-04-18 07:36:29,712 INFO L206 etLargeBlockEncoding]: Checked pairs total: 9503 [2020-04-18 07:36:29,712 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2020-04-18 07:36:29,715 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions, 148 flow [2020-04-18 07:36:29,776 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 719 states. [2020-04-18 07:36:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states. [2020-04-18 07:36:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:36:29,785 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:36:29,786 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 07:36:29,787 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:36:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash 14012195, now seen corresponding path program 1 times [2020-04-18 07:36:29,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:36:29,801 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1195885065] [2020-04-18 07:36:29,816 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:29,828 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:36:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 07:36:29,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:36:29,831 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:36:29,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:29,833 INFO L82 PathProgramCache]: Analyzing trace with hash 14012195, now seen corresponding path program 2 times [2020-04-18 07:36:29,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:29,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496726365] [2020-04-18 07:36:29,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:30,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496726365] [2020-04-18 07:36:30,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:30,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:36:30,079 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:30,079 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:30,080 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:36:30,080 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:30,084 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:36:30,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 07:36:30,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:36:30,090 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 2 states. [2020-04-18 07:36:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:30,094 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 07:36:30,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 07:36:30,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:30,096 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1195885065] [2020-04-18 07:36:30,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:36:30,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:36:30,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1195885065] [2020-04-18 07:36:30,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 07:36:30,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:36:30,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 07:36:30,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:36:30,107 INFO L87 Difference]: Start difference. First operand 719 states. Second operand 2 states. [2020-04-18 07:36:30,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:30,158 INFO L93 Difference]: Finished difference Result 719 states and 2103 transitions. [2020-04-18 07:36:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 07:36:30,160 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-04-18 07:36:30,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:36:30,198 INFO L225 Difference]: With dead ends: 719 [2020-04-18 07:36:30,198 INFO L226 Difference]: Without dead ends: 680 [2020-04-18 07:36:30,200 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:36:30,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-04-18 07:36:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2020-04-18 07:36:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-04-18 07:36:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 2018 transitions. [2020-04-18 07:36:30,313 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 2018 transitions. Word has length 4 [2020-04-18 07:36:30,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:36:30,314 INFO L479 AbstractCegarLoop]: Abstraction has 680 states and 2018 transitions. [2020-04-18 07:36:30,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 07:36:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 2018 transitions. [2020-04-18 07:36:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:36:30,319 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:36:30,319 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:36:30,319 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:36:30,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:30,320 INFO L82 PathProgramCache]: Analyzing trace with hash -870713509, now seen corresponding path program 1 times [2020-04-18 07:36:30,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:36:30,320 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [535989059] [2020-04-18 07:36:30,321 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:30,321 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:36:30,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 07:36:30,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:36:30,322 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:36:30,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:30,323 INFO L82 PathProgramCache]: Analyzing trace with hash -870713509, now seen corresponding path program 2 times [2020-04-18 07:36:30,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:30,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962955941] [2020-04-18 07:36:30,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:30,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962955941] [2020-04-18 07:36:30,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:30,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:36:30,412 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:30,413 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:30,414 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:36:30,415 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:30,418 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:36:30,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:30,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:30,419 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 07:36:30,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:30,429 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 07:36:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 07:36:30,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:30,430 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [535989059] [2020-04-18 07:36:30,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:36:30,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:36:30,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [535989059] [2020-04-18 07:36:30,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:36:30,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:36:30,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:30,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:30,435 INFO L87 Difference]: Start difference. First operand 680 states and 2018 transitions. Second operand 3 states. [2020-04-18 07:36:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:30,476 INFO L93 Difference]: Finished difference Result 685 states and 1989 transitions. [2020-04-18 07:36:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:36:30,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 07:36:30,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:36:30,491 INFO L225 Difference]: With dead ends: 685 [2020-04-18 07:36:30,491 INFO L226 Difference]: Without dead ends: 568 [2020-04-18 07:36:30,494 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-04-18 07:36:30,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 550. [2020-04-18 07:36:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-04-18 07:36:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1644 transitions. [2020-04-18 07:36:30,562 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1644 transitions. Word has length 9 [2020-04-18 07:36:30,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:36:30,562 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 1644 transitions. [2020-04-18 07:36:30,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:36:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1644 transitions. [2020-04-18 07:36:30,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 07:36:30,566 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:36:30,566 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:36:30,566 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:36:30,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1073713561, now seen corresponding path program 1 times [2020-04-18 07:36:30,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:36:30,569 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1920733547] [2020-04-18 07:36:30,569 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:30,570 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 07:36:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 07:36:30,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 07:36:30,571 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:36:30,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:30,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1073713561, now seen corresponding path program 2 times [2020-04-18 07:36:30,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:30,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012239396] [2020-04-18 07:36:30,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:30,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012239396] [2020-04-18 07:36:30,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:30,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:36:30,638 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:30,639 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:30,640 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 07:36:30,640 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:30,652 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:36:30,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:30,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:30,652 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 07:36:30,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:30,660 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 07:36:30,660 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 07:36:30,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:30,661 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1920733547] [2020-04-18 07:36:30,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:36:30,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:36:30,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1920733547] [2020-04-18 07:36:30,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:36:30,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:36:30,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:30,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:30,663 INFO L87 Difference]: Start difference. First operand 550 states and 1644 transitions. Second operand 3 states. [2020-04-18 07:36:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:30,685 INFO L93 Difference]: Finished difference Result 531 states and 1570 transitions. [2020-04-18 07:36:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:36:30,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 07:36:30,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:36:30,690 INFO L225 Difference]: With dead ends: 531 [2020-04-18 07:36:30,690 INFO L226 Difference]: Without dead ends: 408 [2020-04-18 07:36:30,691 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:30,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-04-18 07:36:30,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2020-04-18 07:36:30,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-04-18 07:36:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1242 transitions. [2020-04-18 07:36:30,706 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1242 transitions. Word has length 11 [2020-04-18 07:36:30,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:36:30,707 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 1242 transitions. [2020-04-18 07:36:30,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:36:30,707 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1242 transitions. [2020-04-18 07:36:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:36:30,711 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:36:30,711 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:36:30,711 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:36:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:30,712 INFO L82 PathProgramCache]: Analyzing trace with hash -783095282, now seen corresponding path program 1 times [2020-04-18 07:36:30,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:36:30,712 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2057839893] [2020-04-18 07:36:30,713 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:30,714 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 129 transitions. [2020-04-18 07:36:30,715 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 07:36:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:36:30,716 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:36:30,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:30,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1215534632, now seen corresponding path program 2 times [2020-04-18 07:36:30,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:30,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199168599] [2020-04-18 07:36:30,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:30,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199168599] [2020-04-18 07:36:30,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:30,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:30,767 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:30,770 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:30,776 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 93 transitions. [2020-04-18 07:36:30,776 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:30,790 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 07:36:30,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:30,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:30,791 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 07:36:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:30,795 INFO L93 Difference]: Finished difference Result 76 states and 130 transitions. [2020-04-18 07:36:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 130 transitions. [2020-04-18 07:36:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:36:30,796 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:36:30,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:30,797 INFO L82 PathProgramCache]: Analyzing trace with hash -783095282, now seen corresponding path program 3 times [2020-04-18 07:36:30,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:30,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619587390] [2020-04-18 07:36:30,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:30,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619587390] [2020-04-18 07:36:30,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:30,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:30,838 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:30,839 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:30,842 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 77 transitions. [2020-04-18 07:36:30,842 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:30,864 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 07:36:30,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:30,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:36:30,865 INFO L87 Difference]: Start difference. First operand 76 states and 130 transitions. Second operand 3 states. [2020-04-18 07:36:30,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:30,873 INFO L93 Difference]: Finished difference Result 95 states and 151 transitions. [2020-04-18 07:36:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 151 transitions. [2020-04-18 07:36:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:36:30,873 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 07:36:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:30,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1245743566, now seen corresponding path program 4 times [2020-04-18 07:36:30,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:30,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228424918] [2020-04-18 07:36:30,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:30,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228424918] [2020-04-18 07:36:30,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:30,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:30,904 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:30,905 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:30,908 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 70 transitions. [2020-04-18 07:36:30,908 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:30,939 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 07:36:30,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:36:30,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 07:36:30,940 INFO L87 Difference]: Start difference. First operand 95 states and 151 transitions. Second operand 5 states. [2020-04-18 07:36:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:30,994 INFO L93 Difference]: Finished difference Result 138 states and 212 transitions. [2020-04-18 07:36:30,994 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 212 transitions. [2020-04-18 07:36:30,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:36:30,995 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 07:36:30,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:30,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1092597902, now seen corresponding path program 5 times [2020-04-18 07:36:30,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:30,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944781148] [2020-04-18 07:36:30,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:31,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944781148] [2020-04-18 07:36:31,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:31,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:31,045 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:31,045 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:31,049 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 65 transitions. [2020-04-18 07:36:31,049 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:31,066 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 07:36:31,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:31,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 07:36:31,067 INFO L87 Difference]: Start difference. First operand 138 states and 212 transitions. Second operand 3 states. [2020-04-18 07:36:31,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:31,076 INFO L93 Difference]: Finished difference Result 150 states and 226 transitions. [2020-04-18 07:36:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 226 transitions. [2020-04-18 07:36:31,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:31,077 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2057839893] [2020-04-18 07:36:31,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:36:31,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:36:31,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2057839893] [2020-04-18 07:36:31,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 07:36:31,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:36:31,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 07:36:31,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 07:36:31,080 INFO L87 Difference]: Start difference. First operand 408 states and 1242 transitions. Second operand 8 states. [2020-04-18 07:36:31,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:31,644 INFO L93 Difference]: Finished difference Result 1062 states and 2724 transitions. [2020-04-18 07:36:31,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 07:36:31,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-04-18 07:36:31,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:36:31,648 INFO L225 Difference]: With dead ends: 1062 [2020-04-18 07:36:31,648 INFO L226 Difference]: Without dead ends: 530 [2020-04-18 07:36:31,649 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2020-04-18 07:36:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-04-18 07:36:31,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 220. [2020-04-18 07:36:31,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-04-18 07:36:31,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 534 transitions. [2020-04-18 07:36:31,660 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 534 transitions. Word has length 17 [2020-04-18 07:36:31,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:36:31,660 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 534 transitions. [2020-04-18 07:36:31,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 07:36:31,660 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 534 transitions. [2020-04-18 07:36:31,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:31,661 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:36:31,661 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:36:31,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:36:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:31,662 INFO L82 PathProgramCache]: Analyzing trace with hash 567307087, now seen corresponding path program 1 times [2020-04-18 07:36:31,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:36:31,663 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1146514469] [2020-04-18 07:36:31,663 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:31,665 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 163 transitions. [2020-04-18 07:36:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-04-18 07:36:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:31,666 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:36:31,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:31,667 INFO L82 PathProgramCache]: Analyzing trace with hash 599134987, now seen corresponding path program 2 times [2020-04-18 07:36:31,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:31,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537526300] [2020-04-18 07:36:31,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:31,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537526300] [2020-04-18 07:36:31,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:31,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:31,705 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:31,705 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:31,708 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 86 transitions. [2020-04-18 07:36:31,708 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:31,713 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:36:31,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:31,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:31,714 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-04-18 07:36:31,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:31,719 INFO L93 Difference]: Finished difference Result 94 states and 164 transitions. [2020-04-18 07:36:31,719 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 164 transitions. [2020-04-18 07:36:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:31,720 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:36:31,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:31,720 INFO L82 PathProgramCache]: Analyzing trace with hash 567307087, now seen corresponding path program 3 times [2020-04-18 07:36:31,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:31,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342070730] [2020-04-18 07:36:31,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:31,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342070730] [2020-04-18 07:36:31,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:31,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:31,752 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:31,752 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:31,755 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 78 transitions. [2020-04-18 07:36:31,755 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:31,795 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 07:36:31,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 07:36:31,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 07:36:31,796 INFO L87 Difference]: Start difference. First operand 94 states and 164 transitions. Second operand 6 states. [2020-04-18 07:36:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:31,839 INFO L93 Difference]: Finished difference Result 140 states and 237 transitions. [2020-04-18 07:36:31,840 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 237 transitions. [2020-04-18 07:36:31,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:31,840 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 07:36:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash 340002601, now seen corresponding path program 4 times [2020-04-18 07:36:31,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:31,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688894877] [2020-04-18 07:36:31,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:31,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688894877] [2020-04-18 07:36:31,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:31,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:31,864 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:31,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:31,867 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 76 transitions. [2020-04-18 07:36:31,868 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:31,878 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 07:36:31,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:31,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-04-18 07:36:31,878 INFO L87 Difference]: Start difference. First operand 140 states and 237 transitions. Second operand 3 states. [2020-04-18 07:36:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:31,884 INFO L93 Difference]: Finished difference Result 157 states and 260 transitions. [2020-04-18 07:36:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 260 transitions. [2020-04-18 07:36:31,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:31,885 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1146514469] [2020-04-18 07:36:31,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:36:31,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:36:31,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1146514469] [2020-04-18 07:36:31,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 07:36:31,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:36:31,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 07:36:31,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-04-18 07:36:31,887 INFO L87 Difference]: Start difference. First operand 220 states and 534 transitions. Second operand 8 states. [2020-04-18 07:36:32,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:32,110 INFO L93 Difference]: Finished difference Result 470 states and 1187 transitions. [2020-04-18 07:36:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 07:36:32,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-04-18 07:36:32,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:36:32,116 INFO L225 Difference]: With dead ends: 470 [2020-04-18 07:36:32,116 INFO L226 Difference]: Without dead ends: 448 [2020-04-18 07:36:32,117 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-04-18 07:36:32,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-04-18 07:36:32,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 208. [2020-04-18 07:36:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-04-18 07:36:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 496 transitions. [2020-04-18 07:36:32,126 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 496 transitions. Word has length 19 [2020-04-18 07:36:32,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:36:32,126 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 496 transitions. [2020-04-18 07:36:32,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 07:36:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 496 transitions. [2020-04-18 07:36:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:32,127 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:36:32,127 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:36:32,127 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:36:32,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:32,128 INFO L82 PathProgramCache]: Analyzing trace with hash 684902644, now seen corresponding path program 1 times [2020-04-18 07:36:32,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:36:32,129 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1632040200] [2020-04-18 07:36:32,129 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:32,130 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 159 transitions. [2020-04-18 07:36:32,133 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 07:36:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:32,135 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:36:32,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:32,135 INFO L82 PathProgramCache]: Analyzing trace with hash 99842752, now seen corresponding path program 2 times [2020-04-18 07:36:32,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:32,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753565546] [2020-04-18 07:36:32,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:32,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753565546] [2020-04-18 07:36:32,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:32,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:32,165 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:32,166 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:32,170 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 103 transitions. [2020-04-18 07:36:32,170 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:32,178 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 07:36:32,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:32,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:32,179 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2020-04-18 07:36:32,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:32,184 INFO L93 Difference]: Finished difference Result 92 states and 160 transitions. [2020-04-18 07:36:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 160 transitions. [2020-04-18 07:36:32,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:32,185 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:36:32,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:32,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1012547610, now seen corresponding path program 3 times [2020-04-18 07:36:32,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:32,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346703370] [2020-04-18 07:36:32,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:32,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346703370] [2020-04-18 07:36:32,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:32,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:32,221 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:32,221 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:32,224 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 83 transitions. [2020-04-18 07:36:32,224 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:32,230 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 07:36:32,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:32,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:36:32,231 INFO L87 Difference]: Start difference. First operand 92 states and 160 transitions. Second operand 3 states. [2020-04-18 07:36:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:32,237 INFO L93 Difference]: Finished difference Result 123 states and 201 transitions. [2020-04-18 07:36:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 201 transitions. [2020-04-18 07:36:32,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:32,238 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 07:36:32,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:32,238 INFO L82 PathProgramCache]: Analyzing trace with hash -408914504, now seen corresponding path program 4 times [2020-04-18 07:36:32,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:32,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295290666] [2020-04-18 07:36:32,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:32,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295290666] [2020-04-18 07:36:32,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:32,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:32,257 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:32,258 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:32,260 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 78 transitions. [2020-04-18 07:36:32,261 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:32,308 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 07:36:32,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:36:32,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 07:36:32,309 INFO L87 Difference]: Start difference. First operand 123 states and 201 transitions. Second operand 5 states. [2020-04-18 07:36:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:32,367 INFO L93 Difference]: Finished difference Result 198 states and 313 transitions. [2020-04-18 07:36:32,367 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 313 transitions. [2020-04-18 07:36:32,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:32,368 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 07:36:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:32,368 INFO L82 PathProgramCache]: Analyzing trace with hash 684902644, now seen corresponding path program 5 times [2020-04-18 07:36:32,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:32,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117203272] [2020-04-18 07:36:32,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:32,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117203272] [2020-04-18 07:36:32,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:32,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:32,391 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:32,392 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:32,394 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 78 transitions. [2020-04-18 07:36:32,395 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:32,437 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 07:36:32,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:36:32,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-04-18 07:36:32,438 INFO L87 Difference]: Start difference. First operand 198 states and 313 transitions. Second operand 5 states. [2020-04-18 07:36:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:32,462 INFO L93 Difference]: Finished difference Result 229 states and 359 transitions. [2020-04-18 07:36:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 359 transitions. [2020-04-18 07:36:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:32,463 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 07:36:32,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:32,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2113540376, now seen corresponding path program 6 times [2020-04-18 07:36:32,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:32,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935225382] [2020-04-18 07:36:32,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:32,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935225382] [2020-04-18 07:36:32,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:32,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:32,503 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:32,504 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:32,506 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-04-18 07:36:32,506 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:32,516 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 07:36:32,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:32,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 07:36:32,517 INFO L87 Difference]: Start difference. First operand 229 states and 359 transitions. Second operand 3 states. [2020-04-18 07:36:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:32,524 INFO L93 Difference]: Finished difference Result 270 states and 406 transitions. [2020-04-18 07:36:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 406 transitions. [2020-04-18 07:36:32,525 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:32,525 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1632040200] [2020-04-18 07:36:32,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:36:32,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:36:32,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1632040200] [2020-04-18 07:36:32,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 07:36:32,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:36:32,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 07:36:32,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 07:36:32,528 INFO L87 Difference]: Start difference. First operand 208 states and 496 transitions. Second operand 11 states. [2020-04-18 07:36:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:32,717 INFO L93 Difference]: Finished difference Result 256 states and 678 transitions. [2020-04-18 07:36:32,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 07:36:32,717 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-04-18 07:36:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:36:32,717 INFO L225 Difference]: With dead ends: 256 [2020-04-18 07:36:32,718 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 07:36:32,718 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-04-18 07:36:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 07:36:32,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 07:36:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 07:36:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 07:36:32,719 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-18 07:36:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:36:32,719 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 07:36:32,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 07:36:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 07:36:32,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:32,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:36:32 BasicIcfg [2020-04-18 07:36:32,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 07:36:32,726 INFO L168 Benchmark]: Toolchain (without parser) took 6012.11 ms. Allocated memory was 143.7 MB in the beginning and 288.9 MB in the end (delta: 145.2 MB). Free memory was 100.3 MB in the beginning and 151.7 MB in the end (delta: -51.4 MB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:32,731 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 07:36:32,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.60 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 98.3 MB in the beginning and 158.9 MB in the end (delta: -60.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:32,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.24 ms. Allocated memory is still 201.3 MB. Free memory was 158.9 MB in the beginning and 156.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:32,736 INFO L168 Benchmark]: Boogie Preprocessor took 32.10 ms. Allocated memory is still 201.3 MB. Free memory was 156.8 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:32,737 INFO L168 Benchmark]: RCFGBuilder took 515.65 ms. Allocated memory is still 201.3 MB. Free memory was 155.4 MB in the beginning and 131.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:32,738 INFO L168 Benchmark]: TraceAbstraction took 4700.96 ms. Allocated memory was 201.3 MB in the beginning and 288.9 MB in the end (delta: 87.6 MB). Free memory was 130.4 MB in the beginning and 151.7 MB in the end (delta: -21.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:32,749 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 694.60 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 98.3 MB in the beginning and 158.9 MB in the end (delta: -60.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.24 ms. Allocated memory is still 201.3 MB. Free memory was 158.9 MB in the beginning and 156.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.10 ms. Allocated memory is still 201.3 MB. Free memory was 156.8 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 515.65 ms. Allocated memory is still 201.3 MB. Free memory was 155.4 MB in the beginning and 131.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4700.96 ms. Allocated memory was 201.3 MB in the beginning and 288.9 MB in the end (delta: 87.6 MB). Free memory was 130.4 MB in the beginning and 151.7 MB in the end (delta: -21.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 84 ProgramPointsBefore, 52 ProgramPointsAfterwards, 103 TransitionsBefore, 63 TransitionsAfterwards, 3196 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1170 VarBasedMoverChecksPositive, 91 VarBasedMoverChecksNegative, 60 SemBasedMoverChecksPositive, 63 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 9503 CheckedPairsTotal, 44 TotalNumberOfCompositions - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 502 SDtfs, 835 SDslu, 773 SDs, 0 SdLazy, 471 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 295 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=719occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 568 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...