/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:13:47,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:13:47,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:13:47,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:13:47,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:13:47,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:13:47,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:13:47,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:13:47,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:13:47,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:13:47,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:13:47,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:13:47,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:13:47,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:13:47,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:13:47,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:13:47,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:13:47,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:13:47,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:13:47,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:13:47,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:13:47,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:13:47,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:13:47,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:13:47,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:13:47,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:13:47,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:13:47,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:13:47,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:13:47,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:13:47,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:13:47,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:13:47,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:13:47,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:13:47,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:13:47,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:13:47,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:13:47,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:13:47,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:13:47,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:13:47,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:13:47,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:13:47,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:13:47,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:13:47,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:13:47,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:13:47,491 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:13:47,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:13:47,492 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:13:47,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:13:47,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:13:47,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:13:47,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:13:47,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:13:47,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:13:47,496 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:13:47,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:13:47,496 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:13:47,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:13:47,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:13:47,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:13:47,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:13:47,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:13:47,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:13:47,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:13:47,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:13:47,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:13:47,499 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:13:47,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:13:47,499 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:13:47,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:13:47,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:13:47,765 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:13:47,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:13:47,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:13:47,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:13:47,785 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:13:47,786 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-04-18 11:13:47,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49225f100/63077d7c0a7741fd9fb54a7d18adeaa7/FLAGc044a0faf [2020-04-18 11:13:48,412 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:13:48,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-04-18 11:13:48,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49225f100/63077d7c0a7741fd9fb54a7d18adeaa7/FLAGc044a0faf [2020-04-18 11:13:48,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49225f100/63077d7c0a7741fd9fb54a7d18adeaa7 [2020-04-18 11:13:48,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:13:48,782 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:13:48,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:13:48,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:13:48,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:13:48,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:13:48" (1/1) ... [2020-04-18 11:13:48,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec023ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:48, skipping insertion in model container [2020-04-18 11:13:48,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:13:48" (1/1) ... [2020-04-18 11:13:48,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:13:48,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:13:49,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:13:49,377 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:13:49,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:13:49,511 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:13:49,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49 WrapperNode [2020-04-18 11:13:49,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:13:49,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:13:49,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:13:49,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:13:49,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49" (1/1) ... [2020-04-18 11:13:49,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49" (1/1) ... [2020-04-18 11:13:49,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:13:49,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:13:49,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:13:49,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:13:49,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49" (1/1) ... [2020-04-18 11:13:49,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49" (1/1) ... [2020-04-18 11:13:49,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49" (1/1) ... [2020-04-18 11:13:49,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49" (1/1) ... [2020-04-18 11:13:49,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49" (1/1) ... [2020-04-18 11:13:49,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49" (1/1) ... [2020-04-18 11:13:49,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49" (1/1) ... [2020-04-18 11:13:49,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:13:49,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:13:49,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:13:49,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:13:49,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49" (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 11:13:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:13:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:13:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:13:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:13:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:13:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:13:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:13:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:13:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:13:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:13:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:13:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:13:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:13:49,685 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 11:13:50,048 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:13:50,049 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:13:50,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:13:50 BoogieIcfgContainer [2020-04-18 11:13:50,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:13:50,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:13:50,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:13:50,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:13:50,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:13:48" (1/3) ... [2020-04-18 11:13:50,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d102038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:13:50, skipping insertion in model container [2020-04-18 11:13:50,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:13:49" (2/3) ... [2020-04-18 11:13:50,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d102038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:13:50, skipping insertion in model container [2020-04-18 11:13:50,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:13:50" (3/3) ... [2020-04-18 11:13:50,064 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2020-04-18 11:13:50,072 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:13:50,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:13:50,078 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:13:50,079 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:13:50,108 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,109 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,109 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,112 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,113 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,113 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,113 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,114 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,114 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,114 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,114 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,115 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,116 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,116 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,116 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,117 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,117 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,117 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,122 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,123 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,124 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,125 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,141 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,142 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,142 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,142 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,144 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,145 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,145 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,145 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:13:50,160 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:13:50,177 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:13:50,177 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:13:50,177 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:13:50,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:13:50,178 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:13:50,178 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:13:50,178 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:13:50,178 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:13:50,193 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 11:13:50,195 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 11:13:50,238 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 11:13:50,239 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:13:50,243 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:13:50,246 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 11:13:50,267 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 11:13:50,267 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:13:50,268 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:13:50,270 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 11:13:50,271 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:13:52,022 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2133 [2020-04-18 11:13:52,022 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 11:13:52,027 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 11:13:52,052 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 11:13:52,055 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 11:13:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:13:52,066 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:13:52,067 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:13:52,067 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:13:52,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:52,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1225676630, now seen corresponding path program 1 times [2020-04-18 11:13:52,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:13:52,088 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [33904937] [2020-04-18 11:13:52,107 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:52,126 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:13:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:13:52,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:13:52,128 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:13:52,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1225676630, now seen corresponding path program 2 times [2020-04-18 11:13:52,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:52,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265042612] [2020-04-18 11:13:52,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:52,402 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 11:13:52,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265042612] [2020-04-18 11:13:52,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:52,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:13:52,407 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:52,409 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:52,416 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:13:52,416 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:52,424 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:13:52,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:13:52,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:13:52,434 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:13:52,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:52,438 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:13:52,438 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:13:52,439 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:13:52,439 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [33904937] [2020-04-18 11:13:52,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:13:52,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:13:52,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [33904937] [2020-04-18 11:13:52,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:13:52,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:13:52,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:13:52,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:13:52,449 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 11:13:52,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:52,493 INFO L93 Difference]: Finished difference Result 218 states and 604 transitions. [2020-04-18 11:13:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:13:52,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:13:52,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:13:52,509 INFO L225 Difference]: With dead ends: 218 [2020-04-18 11:13:52,509 INFO L226 Difference]: Without dead ends: 170 [2020-04-18 11:13:52,511 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 11:13:52,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-18 11:13:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-18 11:13:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-18 11:13:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 452 transitions. [2020-04-18 11:13:52,573 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 452 transitions. Word has length 8 [2020-04-18 11:13:52,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:13:52,574 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 452 transitions. [2020-04-18 11:13:52,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:13:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 452 transitions. [2020-04-18 11:13:52,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:13:52,576 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:13:52,576 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:13:52,576 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:13:52,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:52,577 INFO L82 PathProgramCache]: Analyzing trace with hash 658729482, now seen corresponding path program 1 times [2020-04-18 11:13:52,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:13:52,577 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [437029050] [2020-04-18 11:13:52,578 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:52,579 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-04-18 11:13:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 11:13:52,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:13:52,580 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:13:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:52,580 INFO L82 PathProgramCache]: Analyzing trace with hash 658730322, now seen corresponding path program 2 times [2020-04-18 11:13:52,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:52,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206798397] [2020-04-18 11:13:52,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:52,646 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 11:13:52,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206798397] [2020-04-18 11:13:52,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:52,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:13:52,647 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:52,648 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:52,650 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:13:52,650 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:52,665 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:13:52,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:13:52,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:13:52,666 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-04-18 11:13:52,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:52,674 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 11:13:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 11:13:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:13:52,674 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:13:52,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:52,675 INFO L82 PathProgramCache]: Analyzing trace with hash 658729482, now seen corresponding path program 3 times [2020-04-18 11:13:52,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:52,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167648916] [2020-04-18 11:13:52,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:52,738 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 11:13:52,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167648916] [2020-04-18 11:13:52,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:52,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:13:52,739 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:52,739 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:52,741 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 11:13:52,741 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:52,746 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:13:52,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:13:52,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:13:52,747 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-04-18 11:13:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:52,748 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 11:13:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 11:13:52,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:13:52,749 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [437029050] [2020-04-18 11:13:52,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:13:52,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:13:52,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [437029050] [2020-04-18 11:13:52,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:13:52,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:13:52,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:13:52,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:13:52,751 INFO L87 Difference]: Start difference. First operand 170 states and 452 transitions. Second operand 4 states. [2020-04-18 11:13:52,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:52,788 INFO L93 Difference]: Finished difference Result 220 states and 567 transitions. [2020-04-18 11:13:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:13:52,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 11:13:52,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:13:52,791 INFO L225 Difference]: With dead ends: 220 [2020-04-18 11:13:52,791 INFO L226 Difference]: Without dead ends: 148 [2020-04-18 11:13:52,792 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 11:13:52,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-04-18 11:13:52,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-04-18 11:13:52,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-04-18 11:13:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 377 transitions. [2020-04-18 11:13:52,814 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 377 transitions. Word has length 9 [2020-04-18 11:13:52,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:13:52,815 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 377 transitions. [2020-04-18 11:13:52,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:13:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 377 transitions. [2020-04-18 11:13:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:13:52,816 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:13:52,816 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:13:52,816 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:13:52,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:52,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1054223531, now seen corresponding path program 1 times [2020-04-18 11:13:52,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:13:52,817 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [677403669] [2020-04-18 11:13:52,818 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:52,818 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 11:13:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 11:13:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:13:52,820 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:13:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:52,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1054809521, now seen corresponding path program 2 times [2020-04-18 11:13:52,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:52,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485382981] [2020-04-18 11:13:52,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:52,891 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 11:13:52,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485382981] [2020-04-18 11:13:52,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:52,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:13:52,893 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:52,897 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:52,898 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 11:13:52,899 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:52,904 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:13:52,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:13:52,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:13:52,905 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-04-18 11:13:52,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:52,913 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 11:13:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 11:13:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:13:52,914 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:13:52,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:52,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1054810361, now seen corresponding path program 3 times [2020-04-18 11:13:52,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:52,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080894182] [2020-04-18 11:13:52,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:52,984 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 11:13:52,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080894182] [2020-04-18 11:13:52,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:52,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:13:52,986 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:52,987 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:52,988 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 11:13:52,988 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:52,993 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:13:52,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:13:52,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:13:52,994 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 4 states. [2020-04-18 11:13:53,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:53,007 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:13:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:13:53,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:13:53,008 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:13:53,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:53,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1054223531, now seen corresponding path program 4 times [2020-04-18 11:13:53,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:53,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839981948] [2020-04-18 11:13:53,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:13:53,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839981948] [2020-04-18 11:13:53,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:53,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:13:53,132 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:53,133 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:53,135 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 11:13:53,135 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:53,147 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:13:53,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:13:53,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:13:53,147 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 4 states. [2020-04-18 11:13:53,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:53,157 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:13:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:13:53,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:13:53,158 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [677403669] [2020-04-18 11:13:53,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:13:53,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:13:53,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [677403669] [2020-04-18 11:13:53,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:13:53,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:13:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:13:53,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:13:53,162 INFO L87 Difference]: Start difference. First operand 148 states and 377 transitions. Second operand 6 states. [2020-04-18 11:13:53,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:53,309 INFO L93 Difference]: Finished difference Result 168 states and 391 transitions. [2020-04-18 11:13:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:13:53,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-04-18 11:13:53,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:13:53,312 INFO L225 Difference]: With dead ends: 168 [2020-04-18 11:13:53,312 INFO L226 Difference]: Without dead ends: 126 [2020-04-18 11:13:53,313 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:13:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-04-18 11:13:53,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-04-18 11:13:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-04-18 11:13:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 291 transitions. [2020-04-18 11:13:53,334 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 291 transitions. Word has length 10 [2020-04-18 11:13:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:13:53,334 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 291 transitions. [2020-04-18 11:13:53,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:13:53,334 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 291 transitions. [2020-04-18 11:13:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:13:53,337 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:13:53,337 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:13:53,337 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:13:53,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1670186442, now seen corresponding path program 1 times [2020-04-18 11:13:53,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:13:53,338 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [631722734] [2020-04-18 11:13:53,338 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:53,342 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 11:13:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:13:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:13:53,344 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:13:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:53,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1660643412, now seen corresponding path program 2 times [2020-04-18 11:13:53,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:53,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890681762] [2020-04-18 11:13:53,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:13:53,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890681762] [2020-04-18 11:13:53,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:53,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:13:53,412 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:53,413 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:53,414 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 13 transitions. [2020-04-18 11:13:53,414 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:53,417 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:13:53,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:13:53,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:13:53,418 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 11:13:53,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:53,422 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2020-04-18 11:13:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions. [2020-04-18 11:13:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:13:53,423 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:13:53,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:53,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1660616742, now seen corresponding path program 3 times [2020-04-18 11:13:53,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:53,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064084714] [2020-04-18 11:13:53,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:53,453 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 11:13:53,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064084714] [2020-04-18 11:13:53,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:53,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:13:53,455 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:53,456 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:53,457 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-04-18 11:13:53,457 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:53,464 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:13:53,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:13:53,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:13:53,465 INFO L87 Difference]: Start difference. First operand 32 states and 51 transitions. Second operand 4 states. [2020-04-18 11:13:53,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:53,486 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2020-04-18 11:13:53,487 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 58 transitions. [2020-04-18 11:13:53,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:13:53,487 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:13:53,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:53,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1678808472, now seen corresponding path program 4 times [2020-04-18 11:13:53,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:53,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929557037] [2020-04-18 11:13:53,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:53,543 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 11:13:53,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929557037] [2020-04-18 11:13:53,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:53,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:13:53,545 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:53,546 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:53,547 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:13:53,547 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:53,562 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:13:53,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:13:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:13:53,563 INFO L87 Difference]: Start difference. First operand 38 states and 58 transitions. Second operand 4 states. [2020-04-18 11:13:53,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:53,580 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2020-04-18 11:13:53,580 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2020-04-18 11:13:53,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:13:53,581 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:13:53,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:53,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1670186442, now seen corresponding path program 5 times [2020-04-18 11:13:53,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:53,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985154510] [2020-04-18 11:13:53,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:53,638 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 11:13:53,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985154510] [2020-04-18 11:13:53,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:53,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:13:53,639 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:53,640 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:53,642 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:13:53,642 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:53,696 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:13:53,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:13:53,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:13:53,697 INFO L87 Difference]: Start difference. First operand 44 states and 63 transitions. Second operand 6 states. [2020-04-18 11:13:53,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:53,716 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2020-04-18 11:13:53,716 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2020-04-18 11:13:53,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:13:53,717 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [631722734] [2020-04-18 11:13:53,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:13:53,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:13:53,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [631722734] [2020-04-18 11:13:53,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:13:53,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:13:53,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:13:53,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:13:53,718 INFO L87 Difference]: Start difference. First operand 126 states and 291 transitions. Second operand 8 states. [2020-04-18 11:13:53,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:53,821 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-04-18 11:13:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 11:13:53,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-04-18 11:13:53,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:13:53,823 INFO L225 Difference]: With dead ends: 121 [2020-04-18 11:13:53,823 INFO L226 Difference]: Without dead ends: 93 [2020-04-18 11:13:53,823 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:13:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-18 11:13:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-04-18 11:13:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-04-18 11:13:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-04-18 11:13:53,830 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 11 [2020-04-18 11:13:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:13:53,830 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-04-18 11:13:53,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:13:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-04-18 11:13:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:13:53,831 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:13:53,831 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:13:53,832 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:13:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:53,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1269858217, now seen corresponding path program 1 times [2020-04-18 11:13:53,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:13:53,833 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1503285454] [2020-04-18 11:13:53,833 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:53,834 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 89 transitions. [2020-04-18 11:13:53,834 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 11:13:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:13:53,835 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:13:53,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:53,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1850487455, now seen corresponding path program 2 times [2020-04-18 11:13:53,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:53,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560232431] [2020-04-18 11:13:53,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:53,858 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 11:13:53,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560232431] [2020-04-18 11:13:53,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:53,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:13:53,860 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:53,861 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:53,862 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 19 transitions. [2020-04-18 11:13:53,862 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:53,865 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:13:53,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:13:53,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:13:53,866 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-04-18 11:13:53,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:53,870 INFO L93 Difference]: Finished difference Result 54 states and 99 transitions. [2020-04-18 11:13:53,870 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 99 transitions. [2020-04-18 11:13:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:13:53,871 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:13:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1905492935, now seen corresponding path program 3 times [2020-04-18 11:13:53,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:53,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687970946] [2020-04-18 11:13:53,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:53,928 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 11:13:53,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687970946] [2020-04-18 11:13:53,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:53,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:13:53,929 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:53,930 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:53,932 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 11:13:53,932 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:53,945 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:13:53,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:13:53,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:13:53,946 INFO L87 Difference]: Start difference. First operand 54 states and 99 transitions. Second operand 4 states. [2020-04-18 11:13:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:53,969 INFO L93 Difference]: Finished difference Result 72 states and 132 transitions. [2020-04-18 11:13:53,969 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 132 transitions. [2020-04-18 11:13:53,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:13:53,970 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:13:53,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:53,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1572756699, now seen corresponding path program 4 times [2020-04-18 11:13:53,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:53,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412302702] [2020-04-18 11:13:53,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:13:54,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412302702] [2020-04-18 11:13:54,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:54,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:13:54,075 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:54,076 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:54,078 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-04-18 11:13:54,078 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:54,097 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:13:54,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:13:54,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:13:54,098 INFO L87 Difference]: Start difference. First operand 72 states and 132 transitions. Second operand 4 states. [2020-04-18 11:13:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:54,118 INFO L93 Difference]: Finished difference Result 94 states and 159 transitions. [2020-04-18 11:13:54,118 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 159 transitions. [2020-04-18 11:13:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:13:54,118 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:13:54,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:54,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1268592937, now seen corresponding path program 5 times [2020-04-18 11:13:54,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:54,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057768683] [2020-04-18 11:13:54,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:54,169 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 11:13:54,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057768683] [2020-04-18 11:13:54,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:54,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:13:54,170 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:54,171 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:54,173 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 11:13:54,173 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:54,208 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:13:54,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:13:54,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:13:54,209 INFO L87 Difference]: Start difference. First operand 94 states and 159 transitions. Second operand 6 states. [2020-04-18 11:13:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:54,249 INFO L93 Difference]: Finished difference Result 98 states and 161 transitions. [2020-04-18 11:13:54,249 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 161 transitions. [2020-04-18 11:13:54,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:13:54,249 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:13:54,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:54,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1269858217, now seen corresponding path program 6 times [2020-04-18 11:13:54,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:54,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908195360] [2020-04-18 11:13:54,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:54,307 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 11:13:54,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908195360] [2020-04-18 11:13:54,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:54,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:13:54,308 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:54,309 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:54,311 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 11:13:54,311 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:54,344 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:13:54,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:13:54,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:13:54,345 INFO L87 Difference]: Start difference. First operand 98 states and 161 transitions. Second operand 7 states. [2020-04-18 11:13:54,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:54,400 INFO L93 Difference]: Finished difference Result 98 states and 161 transitions. [2020-04-18 11:13:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 161 transitions. [2020-04-18 11:13:54,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:13:54,401 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1503285454] [2020-04-18 11:13:54,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:13:54,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:13:54,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1503285454] [2020-04-18 11:13:54,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 11:13:54,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:13:54,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:13:54,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:13:54,402 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 9 states. [2020-04-18 11:13:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:54,514 INFO L93 Difference]: Finished difference Result 87 states and 178 transitions. [2020-04-18 11:13:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 11:13:54,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-04-18 11:13:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:13:54,515 INFO L225 Difference]: With dead ends: 87 [2020-04-18 11:13:54,515 INFO L226 Difference]: Without dead ends: 78 [2020-04-18 11:13:54,516 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:13:54,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-04-18 11:13:54,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-04-18 11:13:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-04-18 11:13:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 162 transitions. [2020-04-18 11:13:54,522 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 162 transitions. Word has length 13 [2020-04-18 11:13:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:13:54,522 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 162 transitions. [2020-04-18 11:13:54,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 11:13:54,522 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 162 transitions. [2020-04-18 11:13:54,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:13:54,523 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:13:54,523 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:13:54,523 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:13:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:54,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1906464189, now seen corresponding path program 1 times [2020-04-18 11:13:54,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:13:54,524 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1702508330] [2020-04-18 11:13:54,525 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:54,528 INFO L259 McrAutomatonBuilder]: Finished intersection with 178 states and 482 transitions. [2020-04-18 11:13:54,530 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-04-18 11:13:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:13:54,532 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:13:54,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:54,533 INFO L82 PathProgramCache]: Analyzing trace with hash -690242109, now seen corresponding path program 2 times [2020-04-18 11:13:54,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:54,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582663427] [2020-04-18 11:13:54,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:54,565 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 11:13:54,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582663427] [2020-04-18 11:13:54,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:54,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:13:54,567 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:54,568 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:54,574 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 78 transitions. [2020-04-18 11:13:54,575 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:54,579 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:13:54,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:13:54,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:13:54,579 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-04-18 11:13:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:54,590 INFO L93 Difference]: Finished difference Result 258 states and 660 transitions. [2020-04-18 11:13:54,591 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 660 transitions. [2020-04-18 11:13:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:13:54,592 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:13:54,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:54,592 INFO L82 PathProgramCache]: Analyzing trace with hash -745247589, now seen corresponding path program 3 times [2020-04-18 11:13:54,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:54,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113766314] [2020-04-18 11:13:54,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:54,629 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 11:13:54,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113766314] [2020-04-18 11:13:54,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:54,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:13:54,630 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:54,631 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:54,636 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 79 transitions. [2020-04-18 11:13:54,636 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:54,657 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:13:54,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:13:54,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:13:54,658 INFO L87 Difference]: Start difference. First operand 258 states and 660 transitions. Second operand 4 states. [2020-04-18 11:13:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:54,676 INFO L93 Difference]: Finished difference Result 386 states and 932 transitions. [2020-04-18 11:13:54,676 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 932 transitions. [2020-04-18 11:13:54,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:13:54,678 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:13:54,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:54,678 INFO L82 PathProgramCache]: Analyzing trace with hash -714894699, now seen corresponding path program 4 times [2020-04-18 11:13:54,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:54,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711915697] [2020-04-18 11:13:54,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:54,708 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 11:13:54,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711915697] [2020-04-18 11:13:54,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:54,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:13:54,709 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:54,710 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:54,715 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 65 transitions. [2020-04-18 11:13:54,715 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:54,724 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:13:54,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:13:54,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:13:54,724 INFO L87 Difference]: Start difference. First operand 386 states and 932 transitions. Second operand 4 states. [2020-04-18 11:13:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:54,745 INFO L93 Difference]: Finished difference Result 496 states and 1183 transitions. [2020-04-18 11:13:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1183 transitions. [2020-04-18 11:13:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:13:54,747 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:13:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:54,748 INFO L82 PathProgramCache]: Analyzing trace with hash -412511353, now seen corresponding path program 5 times [2020-04-18 11:13:54,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:54,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380789304] [2020-04-18 11:13:54,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:54,824 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 11:13:54,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380789304] [2020-04-18 11:13:54,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:54,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:13:54,826 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:54,827 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:54,832 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 80 transitions. [2020-04-18 11:13:54,833 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:54,867 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:13:54,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:13:54,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:13:54,868 INFO L87 Difference]: Start difference. First operand 496 states and 1183 transitions. Second operand 5 states. [2020-04-18 11:13:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:54,955 INFO L93 Difference]: Finished difference Result 572 states and 1279 transitions. [2020-04-18 11:13:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1279 transitions. [2020-04-18 11:13:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:13:54,957 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:13:54,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:54,958 INFO L82 PathProgramCache]: Analyzing trace with hash -108347591, now seen corresponding path program 6 times [2020-04-18 11:13:54,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:54,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565129521] [2020-04-18 11:13:54,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:55,094 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 11:13:55,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565129521] [2020-04-18 11:13:55,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:55,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:13:55,096 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:55,097 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:55,102 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-04-18 11:13:55,102 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:55,146 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:13:55,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:13:55,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:13:55,147 INFO L87 Difference]: Start difference. First operand 572 states and 1279 transitions. Second operand 7 states. [2020-04-18 11:13:55,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:55,248 INFO L93 Difference]: Finished difference Result 583 states and 1285 transitions. [2020-04-18 11:13:55,248 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1285 transitions. [2020-04-18 11:13:55,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:13:55,250 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:13:55,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:13:55,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1298646435, now seen corresponding path program 7 times [2020-04-18 11:13:55,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:13:55,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350081837] [2020-04-18 11:13:55,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:13:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:13:55,307 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 11:13:55,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350081837] [2020-04-18 11:13:55,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:13:55,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:13:55,308 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:13:55,310 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:13:55,312 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 25 transitions. [2020-04-18 11:13:55,313 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:13:55,411 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:13:55,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:13:55,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:13:55,412 INFO L87 Difference]: Start difference. First operand 583 states and 1285 transitions. Second operand 4 states. [2020-04-18 11:13:55,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:55,446 INFO L93 Difference]: Finished difference Result 834 states and 1789 transitions. [2020-04-18 11:13:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1789 transitions. [2020-04-18 11:13:55,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:13:55,449 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1702508330] [2020-04-18 11:13:55,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:13:55,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:13:55,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1702508330] [2020-04-18 11:13:55,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:13:55,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:13:55,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:13:55,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:13:55,451 INFO L87 Difference]: Start difference. First operand 78 states and 162 transitions. Second operand 13 states. [2020-04-18 11:13:56,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:13:56,196 INFO L93 Difference]: Finished difference Result 141 states and 269 transitions. [2020-04-18 11:13:56,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-04-18 11:13:56,197 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-04-18 11:13:56,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:13:56,198 INFO L225 Difference]: With dead ends: 141 [2020-04-18 11:13:56,198 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:13:56,199 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=581, Invalid=2611, Unknown=0, NotChecked=0, Total=3192 [2020-04-18 11:13:56,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:13:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:13:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:13:56,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:13:56,200 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 11:13:56,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:13:56,201 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:13:56,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:13:56,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:13:56,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:13:56,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:13:56 BasicIcfg [2020-04-18 11:13:56,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:13:56,207 INFO L168 Benchmark]: Toolchain (without parser) took 7439.61 ms. Allocated memory was 139.5 MB in the beginning and 308.3 MB in the end (delta: 168.8 MB). Free memory was 103.4 MB in the beginning and 272.4 MB in the end (delta: -169.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:13:56,208 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 139.5 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:13:56,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.68 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.4 MB in the beginning and 159.0 MB in the end (delta: -57.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:13:56,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.11 ms. Allocated memory is still 203.9 MB. Free memory was 159.0 MB in the beginning and 156.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:13:56,210 INFO L168 Benchmark]: Boogie Preprocessor took 26.37 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 155.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:13:56,210 INFO L168 Benchmark]: RCFGBuilder took 445.57 ms. Allocated memory is still 203.9 MB. Free memory was 155.0 MB in the beginning and 133.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:13:56,211 INFO L168 Benchmark]: TraceAbstraction took 6148.35 ms. Allocated memory was 203.9 MB in the beginning and 308.3 MB in the end (delta: 104.3 MB). Free memory was 132.2 MB in the beginning and 272.4 MB in the end (delta: -140.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:13:56,214 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 139.5 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 729.68 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.4 MB in the beginning and 159.0 MB in the end (delta: -57.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.11 ms. Allocated memory is still 203.9 MB. Free memory was 159.0 MB in the beginning and 156.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.37 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 155.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 445.57 ms. Allocated memory is still 203.9 MB. Free memory was 155.0 MB in the beginning and 133.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6148.35 ms. Allocated memory was 203.9 MB in the beginning and 308.3 MB in the end (delta: 104.3 MB). Free memory was 132.2 MB in the beginning and 272.4 MB in the end (delta: -140.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 608 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2133 CheckedPairsTotal, 57 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 107 SDtfs, 312 SDslu, 324 SDs, 0 SdLazy, 342 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 359 GetRequests, 255 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...