/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 14:56:11,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 14:56:11,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 14:56:11,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 14:56:11,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 14:56:11,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 14:56:11,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 14:56:11,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 14:56:11,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 14:56:11,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 14:56:11,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 14:56:11,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 14:56:11,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 14:56:11,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 14:56:11,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 14:56:11,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 14:56:11,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 14:56:11,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 14:56:11,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 14:56:11,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 14:56:11,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 14:56:11,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 14:56:11,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 14:56:11,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 14:56:11,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 14:56:11,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 14:56:11,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 14:56:11,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 14:56:11,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 14:56:11,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 14:56:11,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 14:56:11,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 14:56:11,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 14:56:11,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 14:56:11,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 14:56:11,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 14:56:11,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 14:56:11,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 14:56:11,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 14:56:11,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 14:56:11,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 14:56:11,481 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-VariableLbe-McrStrategy.epf [2020-04-18 14:56:11,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 14:56:11,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 14:56:11,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 14:56:11,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 14:56:11,498 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 14:56:11,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 14:56:11,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 14:56:11,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 14:56:11,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 14:56:11,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 14:56:11,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 14:56:11,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 14:56:11,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 14:56:11,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 14:56:11,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 14:56:11,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 14:56:11,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 14:56:11,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 14:56:11,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 14:56:11,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 14:56:11,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 14:56:11,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 14:56:11,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 14:56:11,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 14:56:11,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 14:56:11,502 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 14:56:11,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 14:56:11,503 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 14:56:11,503 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 14:56:11,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 14:56:11,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 14:56:11,794 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 14:56:11,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 14:56:11,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 14:56:11,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 14:56:11,815 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 14:56:11,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-04-18 14:56:11,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e6d2aa0/dbcf638869c24f2e81f8333c65e8f2f4/FLAG35546ce82 [2020-04-18 14:56:12,397 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 14:56:12,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-04-18 14:56:12,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e6d2aa0/dbcf638869c24f2e81f8333c65e8f2f4/FLAG35546ce82 [2020-04-18 14:56:12,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e6d2aa0/dbcf638869c24f2e81f8333c65e8f2f4 [2020-04-18 14:56:12,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 14:56:12,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 14:56:12,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 14:56:12,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 14:56:12,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 14:56:12,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:56:12" (1/1) ... [2020-04-18 14:56:12,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b347a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:12, skipping insertion in model container [2020-04-18 14:56:12,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:56:12" (1/1) ... [2020-04-18 14:56:12,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 14:56:12,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 14:56:13,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 14:56:13,341 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 14:56:13,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 14:56:13,480 INFO L208 MainTranslator]: Completed translation [2020-04-18 14:56:13,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13 WrapperNode [2020-04-18 14:56:13,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 14:56:13,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 14:56:13,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 14:56:13,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 14:56:13,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13" (1/1) ... [2020-04-18 14:56:13,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13" (1/1) ... [2020-04-18 14:56:13,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 14:56:13,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 14:56:13,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 14:56:13,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 14:56:13,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13" (1/1) ... [2020-04-18 14:56:13,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13" (1/1) ... [2020-04-18 14:56:13,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13" (1/1) ... [2020-04-18 14:56:13,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13" (1/1) ... [2020-04-18 14:56:13,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13" (1/1) ... [2020-04-18 14:56:13,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13" (1/1) ... [2020-04-18 14:56:13,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13" (1/1) ... [2020-04-18 14:56:13,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 14:56:13,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 14:56:13,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 14:56:13,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 14:56:13,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13" (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 14:56:13,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 14:56:13,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 14:56:13,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 14:56:13,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 14:56:13,630 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 14:56:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 14:56:13,631 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 14:56:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 14:56:13,631 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 14:56:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 14:56:13,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 14:56:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 14:56:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 14:56:13,634 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 14:56:14,036 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 14:56:14,036 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 14:56:14,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:56:14 BoogieIcfgContainer [2020-04-18 14:56:14,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 14:56:14,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 14:56:14,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 14:56:14,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 14:56:14,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:56:12" (1/3) ... [2020-04-18 14:56:14,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158046f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:56:14, skipping insertion in model container [2020-04-18 14:56:14,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:13" (2/3) ... [2020-04-18 14:56:14,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158046f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:56:14, skipping insertion in model container [2020-04-18 14:56:14,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:56:14" (3/3) ... [2020-04-18 14:56:14,052 INFO L109 eAbstractionObserver]: Analyzing ICFG safe003_tso.opt.i [2020-04-18 14:56:14,060 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 14:56:14,061 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 14:56:14,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 14:56:14,069 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 14:56:14,094 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,094 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,095 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,095 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,096 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,096 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,097 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,097 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,097 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,097 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,098 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,098 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,099 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,099 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,099 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,099 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,100 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,100 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,104 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,105 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,105 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,105 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,111 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,112 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,112 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,112 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,115 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,115 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,115 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,115 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:56:14,131 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 14:56:14,149 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 14:56:14,150 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 14:56:14,150 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 14:56:14,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 14:56:14,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 14:56:14,151 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 14:56:14,151 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 14:56:14,151 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 14:56:14,166 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 14:56:14,168 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 14:56:14,215 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 14:56:14,215 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 14:56:14,221 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 14:56:14,223 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 14:56:14,245 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 14:56:14,246 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 14:56:14,247 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 14:56:14,249 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 14:56:14,250 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 14:56:15,668 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 14:56:15,837 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 14:56:15,837 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 14:56:15,841 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 14:56:15,868 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 14:56:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 14:56:15,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 14:56:15,882 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:56:15,882 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:56:15,883 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:56:15,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:15,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 14:56:15,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:56:15,898 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1280008427] [2020-04-18 14:56:15,914 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:15,923 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 14:56:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 14:56:15,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 14:56:15,925 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:56:15,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:15,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 2 times [2020-04-18 14:56:15,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:15,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059860927] [2020-04-18 14:56:15,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:16,128 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 14:56:16,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059860927] [2020-04-18 14:56:16,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:16,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 14:56:16,131 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:16,132 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:16,135 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 14:56:16,135 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:16,146 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:56:16,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:56:16,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:56:16,152 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 14:56:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:16,155 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 14:56:16,155 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 14:56:16,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:56:16,156 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1280008427] [2020-04-18 14:56:16,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:56:16,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 14:56:16,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1280008427] [2020-04-18 14:56:16,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 14:56:16,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:56:16,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:56:16,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:56:16,162 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 14:56:16,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:16,226 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 14:56:16,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 14:56:16,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 14:56:16,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:56:16,265 INFO L225 Difference]: With dead ends: 266 [2020-04-18 14:56:16,265 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 14:56:16,267 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 14:56:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 14:56:16,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 14:56:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 14:56:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 14:56:16,333 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 14:56:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:56:16,334 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 14:56:16,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 14:56:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 14:56:16,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:56:16,339 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:56:16,339 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:56:16,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:56:16,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:16,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1613616234, now seen corresponding path program 1 times [2020-04-18 14:56:16,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:56:16,340 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [832547822] [2020-04-18 14:56:16,341 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:16,342 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 14:56:16,342 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 14:56:16,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:56:16,343 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:56:16,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:16,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1613616234, now seen corresponding path program 2 times [2020-04-18 14:56:16,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:16,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369022539] [2020-04-18 14:56:16,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:16,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:56:16,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369022539] [2020-04-18 14:56:16,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:16,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:56:16,432 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:16,433 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:16,434 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 14:56:16,435 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:16,445 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:56:16,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:16,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:56:16,446 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-04-18 14:56:16,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:16,458 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-04-18 14:56:16,458 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2020-04-18 14:56:16,459 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:56:16,459 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [832547822] [2020-04-18 14:56:16,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:56:16,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:56:16,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [832547822] [2020-04-18 14:56:16,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 14:56:16,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:56:16,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:16,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:56:16,461 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 14:56:16,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:16,484 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-04-18 14:56:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 14:56:16,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 14:56:16,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:56:16,488 INFO L225 Difference]: With dead ends: 254 [2020-04-18 14:56:16,488 INFO L226 Difference]: Without dead ends: 190 [2020-04-18 14:56:16,490 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:56:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-04-18 14:56:16,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-04-18 14:56:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-04-18 14:56:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-04-18 14:56:16,514 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-04-18 14:56:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:56:16,514 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-04-18 14:56:16,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 14:56:16,514 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-04-18 14:56:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:56:16,516 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:56:16,516 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:56:16,517 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:56:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:16,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1111108671, now seen corresponding path program 1 times [2020-04-18 14:56:16,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:56:16,518 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1564863919] [2020-04-18 14:56:16,518 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:16,519 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 14:56:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 14:56:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:56:16,520 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:56:16,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:16,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1111108671, now seen corresponding path program 2 times [2020-04-18 14:56:16,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:16,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071278947] [2020-04-18 14:56:16,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:16,645 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 14:56:16,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071278947] [2020-04-18 14:56:16,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:16,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:56:16,647 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:16,648 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:16,650 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 14:56:16,650 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:16,662 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:56:16,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:16,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:56:16,663 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-04-18 14:56:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:16,678 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 14:56:16,678 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 14:56:16,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:56:16,679 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:56:16,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:16,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1111154331, now seen corresponding path program 3 times [2020-04-18 14:56:16,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:16,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815786427] [2020-04-18 14:56:16,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:16,734 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 14:56:16,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815786427] [2020-04-18 14:56:16,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:16,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:56:16,736 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:16,737 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:16,741 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 14:56:16,741 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:16,754 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:56:16,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:56:16,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:56:16,756 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 3 states. [2020-04-18 14:56:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:16,759 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 14:56:16,759 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 14:56:16,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:56:16,760 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:56:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:16,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 4 times [2020-04-18 14:56:16,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:16,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399712195] [2020-04-18 14:56:16,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:16,802 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 14:56:16,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399712195] [2020-04-18 14:56:16,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:16,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:56:16,803 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:16,804 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:16,806 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-04-18 14:56:16,806 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:16,813 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:56:16,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:16,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:56:16,814 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 4 states. [2020-04-18 14:56:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:16,834 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 14:56:16,834 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 14:56:16,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:56:16,835 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1564863919] [2020-04-18 14:56:16,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:56:16,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:56:16,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1564863919] [2020-04-18 14:56:16,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 14:56:16,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:56:16,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:56:16,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:56:16,838 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 6 states. [2020-04-18 14:56:16,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:16,888 INFO L93 Difference]: Finished difference Result 262 states and 670 transitions. [2020-04-18 14:56:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 14:56:16,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 14:56:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:56:16,891 INFO L225 Difference]: With dead ends: 262 [2020-04-18 14:56:16,891 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 14:56:16,892 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-04-18 14:56:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 14:56:16,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2020-04-18 14:56:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-18 14:56:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-04-18 14:56:16,926 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-04-18 14:56:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:56:16,927 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-04-18 14:56:16,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 14:56:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-04-18 14:56:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:56:16,934 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:56:16,934 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:56:16,934 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:56:16,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:16,935 INFO L82 PathProgramCache]: Analyzing trace with hash -143018253, now seen corresponding path program 1 times [2020-04-18 14:56:16,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:56:16,935 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [851680583] [2020-04-18 14:56:16,936 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:16,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 68 transitions. [2020-04-18 14:56:16,938 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 14:56:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:56:16,942 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:56:16,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:16,942 INFO L82 PathProgramCache]: Analyzing trace with hash -142845273, now seen corresponding path program 2 times [2020-04-18 14:56:16,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:16,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572855672] [2020-04-18 14:56:16,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:17,022 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 14:56:17,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572855672] [2020-04-18 14:56:17,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:17,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:56:17,023 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:17,024 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:17,028 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 34 transitions. [2020-04-18 14:56:17,028 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:17,055 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:56:17,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:17,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:56:17,056 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-04-18 14:56:17,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:17,078 INFO L93 Difference]: Finished difference Result 40 states and 70 transitions. [2020-04-18 14:56:17,079 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 70 transitions. [2020-04-18 14:56:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:56:17,079 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:56:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:17,080 INFO L82 PathProgramCache]: Analyzing trace with hash -143018253, now seen corresponding path program 3 times [2020-04-18 14:56:17,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:17,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343673876] [2020-04-18 14:56:17,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:17,145 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 14:56:17,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343673876] [2020-04-18 14:56:17,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:17,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:56:17,147 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:17,148 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:17,150 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-04-18 14:56:17,150 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:17,161 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:56:17,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:17,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:56:17,162 INFO L87 Difference]: Start difference. First operand 40 states and 70 transitions. Second operand 4 states. [2020-04-18 14:56:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:17,204 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2020-04-18 14:56:17,204 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 77 transitions. [2020-04-18 14:56:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:56:17,205 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:56:17,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:17,205 INFO L82 PathProgramCache]: Analyzing trace with hash -178767453, now seen corresponding path program 4 times [2020-04-18 14:56:17,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:17,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60993597] [2020-04-18 14:56:17,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:17,241 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 14:56:17,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60993597] [2020-04-18 14:56:17,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:17,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:56:17,242 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:17,243 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:17,245 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 14:56:17,245 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:17,270 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:56:17,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:17,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 14:56:17,271 INFO L87 Difference]: Start difference. First operand 47 states and 77 transitions. Second operand 4 states. [2020-04-18 14:56:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:17,284 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2020-04-18 14:56:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 77 transitions. [2020-04-18 14:56:17,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:56:17,285 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [851680583] [2020-04-18 14:56:17,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:56:17,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:56:17,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [851680583] [2020-04-18 14:56:17,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 14:56:17,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:56:17,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 14:56:17,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 14:56:17,287 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 7 states. [2020-04-18 14:56:17,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:17,420 INFO L93 Difference]: Finished difference Result 350 states and 868 transitions. [2020-04-18 14:56:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 14:56:17,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 14:56:17,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:56:17,423 INFO L225 Difference]: With dead ends: 350 [2020-04-18 14:56:17,424 INFO L226 Difference]: Without dead ends: 112 [2020-04-18 14:56:17,424 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-04-18 14:56:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-18 14:56:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-18 14:56:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-18 14:56:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 261 transitions. [2020-04-18 14:56:17,431 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 261 transitions. Word has length 12 [2020-04-18 14:56:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:56:17,431 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 261 transitions. [2020-04-18 14:56:17,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 14:56:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 261 transitions. [2020-04-18 14:56:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:56:17,432 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:56:17,432 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:56:17,433 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:56:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:17,433 INFO L82 PathProgramCache]: Analyzing trace with hash 652437482, now seen corresponding path program 1 times [2020-04-18 14:56:17,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:56:17,433 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [300838844] [2020-04-18 14:56:17,434 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:17,436 INFO L259 McrAutomatonBuilder]: Finished intersection with 107 states and 270 transitions. [2020-04-18 14:56:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-04-18 14:56:17,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:56:17,439 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:56:17,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:17,439 INFO L82 PathProgramCache]: Analyzing trace with hash 652437482, now seen corresponding path program 2 times [2020-04-18 14:56:17,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:17,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102753535] [2020-04-18 14:56:17,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:17,500 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 14:56:17,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102753535] [2020-04-18 14:56:17,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:17,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:56:17,501 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:17,502 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:17,507 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-04-18 14:56:17,507 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:17,522 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:56:17,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:17,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:56:17,523 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 4 states. [2020-04-18 14:56:17,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:17,549 INFO L93 Difference]: Finished difference Result 166 states and 367 transitions. [2020-04-18 14:56:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 367 transitions. [2020-04-18 14:56:17,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:56:17,550 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:56:17,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:17,550 INFO L82 PathProgramCache]: Analyzing trace with hash 652264502, now seen corresponding path program 3 times [2020-04-18 14:56:17,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:17,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491267313] [2020-04-18 14:56:17,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:17,625 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 14:56:17,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491267313] [2020-04-18 14:56:17,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:17,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:56:17,626 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:17,627 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:17,631 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-04-18 14:56:17,631 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:17,641 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:56:17,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:17,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:56:17,642 INFO L87 Difference]: Start difference. First operand 166 states and 367 transitions. Second operand 4 states. [2020-04-18 14:56:17,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:17,670 INFO L93 Difference]: Finished difference Result 259 states and 530 transitions. [2020-04-18 14:56:17,670 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 530 transitions. [2020-04-18 14:56:17,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:56:17,671 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:56:17,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:17,671 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 4 times [2020-04-18 14:56:17,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:17,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41034021] [2020-04-18 14:56:17,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:17,705 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 14:56:17,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41034021] [2020-04-18 14:56:17,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:17,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:56:17,706 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:17,707 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:17,710 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 50 transitions. [2020-04-18 14:56:17,710 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:17,757 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:56:17,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:17,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 14:56:17,758 INFO L87 Difference]: Start difference. First operand 259 states and 530 transitions. Second operand 4 states. [2020-04-18 14:56:17,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:17,780 INFO L93 Difference]: Finished difference Result 281 states and 549 transitions. [2020-04-18 14:56:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 549 transitions. [2020-04-18 14:56:17,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:56:17,781 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:56:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:17,781 INFO L82 PathProgramCache]: Analyzing trace with hash 666416582, now seen corresponding path program 5 times [2020-04-18 14:56:17,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:17,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092417877] [2020-04-18 14:56:17,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:17,807 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 14:56:17,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092417877] [2020-04-18 14:56:17,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:17,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:56:17,808 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:17,809 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:17,812 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 40 transitions. [2020-04-18 14:56:17,812 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:17,822 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:56:17,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:56:17,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 14:56:17,823 INFO L87 Difference]: Start difference. First operand 281 states and 549 transitions. Second operand 3 states. [2020-04-18 14:56:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:17,827 INFO L93 Difference]: Finished difference Result 286 states and 552 transitions. [2020-04-18 14:56:17,827 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 552 transitions. [2020-04-18 14:56:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:56:17,828 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 14:56:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:17,828 INFO L82 PathProgramCache]: Analyzing trace with hash 184119264, now seen corresponding path program 6 times [2020-04-18 14:56:17,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:17,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306541024] [2020-04-18 14:56:17,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:17,859 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 14:56:17,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306541024] [2020-04-18 14:56:17,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:17,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:56:17,860 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:17,861 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:17,865 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 58 transitions. [2020-04-18 14:56:17,865 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:17,877 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:56:17,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:17,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:56:17,878 INFO L87 Difference]: Start difference. First operand 286 states and 552 transitions. Second operand 4 states. [2020-04-18 14:56:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:17,898 INFO L93 Difference]: Finished difference Result 301 states and 571 transitions. [2020-04-18 14:56:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 571 transitions. [2020-04-18 14:56:17,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:56:17,899 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 14:56:17,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:17,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2548746, now seen corresponding path program 7 times [2020-04-18 14:56:17,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:17,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937179183] [2020-04-18 14:56:17,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:17,932 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 14:56:17,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937179183] [2020-04-18 14:56:17,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:17,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:56:17,933 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:17,934 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:17,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-04-18 14:56:17,938 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:17,952 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:56:17,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:17,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-04-18 14:56:17,953 INFO L87 Difference]: Start difference. First operand 301 states and 571 transitions. Second operand 4 states. [2020-04-18 14:56:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:17,973 INFO L93 Difference]: Finished difference Result 342 states and 634 transitions. [2020-04-18 14:56:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 634 transitions. [2020-04-18 14:56:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:56:17,975 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 14:56:17,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:56:17,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2208422, now seen corresponding path program 8 times [2020-04-18 14:56:17,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:56:17,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185601115] [2020-04-18 14:56:17,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:56:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:56:18,008 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 14:56:18,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185601115] [2020-04-18 14:56:18,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:56:18,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:56:18,009 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:56:18,010 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:56:18,015 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 65 transitions. [2020-04-18 14:56:18,016 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:56:18,051 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:56:18,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:56:18,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-04-18 14:56:18,052 INFO L87 Difference]: Start difference. First operand 342 states and 634 transitions. Second operand 4 states. [2020-04-18 14:56:18,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:18,070 INFO L93 Difference]: Finished difference Result 416 states and 721 transitions. [2020-04-18 14:56:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 721 transitions. [2020-04-18 14:56:18,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:56:18,096 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [300838844] [2020-04-18 14:56:18,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:56:18,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:56:18,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [300838844] [2020-04-18 14:56:18,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 14:56:18,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:56:18,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 14:56:18,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-04-18 14:56:18,098 INFO L87 Difference]: Start difference. First operand 112 states and 261 transitions. Second operand 12 states. [2020-04-18 14:56:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:56:18,379 INFO L93 Difference]: Finished difference Result 144 states and 325 transitions. [2020-04-18 14:56:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 14:56:18,380 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-04-18 14:56:18,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:56:18,380 INFO L225 Difference]: With dead ends: 144 [2020-04-18 14:56:18,380 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 14:56:18,381 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2020-04-18 14:56:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 14:56:18,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 14:56:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 14:56:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 14:56:18,382 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 14:56:18,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:56:18,382 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 14:56:18,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 14:56:18,382 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 14:56:18,382 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:56:18,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:56:18 BasicIcfg [2020-04-18 14:56:18,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 14:56:18,388 INFO L168 Benchmark]: Toolchain (without parser) took 5635.75 ms. Allocated memory was 136.8 MB in the beginning and 296.7 MB in the end (delta: 159.9 MB). Free memory was 99.8 MB in the beginning and 220.8 MB in the end (delta: -121.0 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. [2020-04-18 14:56:18,389 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 14:56:18,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.41 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 97.7 MB in the beginning and 157.1 MB in the end (delta: -59.4 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-04-18 14:56:18,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.74 ms. Allocated memory is still 200.3 MB. Free memory was 157.1 MB in the beginning and 155.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 14:56:18,391 INFO L168 Benchmark]: Boogie Preprocessor took 28.22 ms. Allocated memory is still 200.3 MB. Free memory was 155.0 MB in the beginning and 153.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 14:56:18,392 INFO L168 Benchmark]: RCFGBuilder took 476.88 ms. Allocated memory is still 200.3 MB. Free memory was 153.7 MB in the beginning and 131.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 14:56:18,393 INFO L168 Benchmark]: TraceAbstraction took 4344.53 ms. Allocated memory was 200.3 MB in the beginning and 296.7 MB in the end (delta: 96.5 MB). Free memory was 130.9 MB in the beginning and 220.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 7.1 GB. [2020-04-18 14:56:18,397 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 709.41 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 97.7 MB in the beginning and 157.1 MB in the end (delta: -59.4 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.74 ms. Allocated memory is still 200.3 MB. Free memory was 157.1 MB in the beginning and 155.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.22 ms. Allocated memory is still 200.3 MB. Free memory was 155.0 MB in the beginning and 153.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.88 ms. Allocated memory is still 200.3 MB. Free memory was 153.7 MB in the beginning and 131.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4344.53 ms. Allocated memory was 200.3 MB in the beginning and 296.7 MB in the end (delta: 96.5 MB). Free memory was 130.9 MB in the beginning and 220.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 653 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 119 SDtfs, 258 SDslu, 351 SDs, 0 SdLazy, 121 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 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...