/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:31:57,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:31:57,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:31:57,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:31:57,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:31:57,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:31:57,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:31:57,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:31:57,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:31:57,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:31:57,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:31:57,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:31:57,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:31:57,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:31:57,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:31:57,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:31:57,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:31:57,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:31:57,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:31:57,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:31:57,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:31:57,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:31:57,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:31:57,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:31:57,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:31:57,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:31:57,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:31:57,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:31:57,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:31:57,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:31:57,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:31:57,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:31:57,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:31:57,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:31:57,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:31:57,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:31:57,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:31:57,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:31:57,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:31:57,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:31:57,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:31:57,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:31:57,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:31:57,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:31:57,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:31:57,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:31:57,435 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:31:57,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:31:57,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:31:57,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:31:57,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:31:57,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:31:57,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:31:57,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:31:57,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:31:57,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:31:57,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:31:57,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:31:57,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:31:57,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:31:57,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:31:57,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:31:57,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:31:57,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:31:57,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:31:57,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:31:57,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:31:57,442 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:31:57,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:31:57,442 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:31:57,442 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:31:57,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:31:57,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:31:57,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:31:57,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:31:57,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:31:57,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:31:57,760 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:31:57,761 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i [2020-04-18 15:31:57,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392129f44/777e30b994b74c8d9e06ce602eb4ff6d/FLAG850ebcc4b [2020-04-18 15:31:58,397 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:31:58,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i [2020-04-18 15:31:58,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392129f44/777e30b994b74c8d9e06ce602eb4ff6d/FLAG850ebcc4b [2020-04-18 15:31:58,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392129f44/777e30b994b74c8d9e06ce602eb4ff6d [2020-04-18 15:31:58,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:31:58,720 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:31:58,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:31:58,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:31:58,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:31:58,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:31:58" (1/1) ... [2020-04-18 15:31:58,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b347a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:58, skipping insertion in model container [2020-04-18 15:31:58,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:31:58" (1/1) ... [2020-04-18 15:31:58,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:31:58,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:31:59,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:31:59,339 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:31:59,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:31:59,492 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:31:59,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59 WrapperNode [2020-04-18 15:31:59,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:31:59,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:31:59,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:31:59,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:31:59,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59" (1/1) ... [2020-04-18 15:31:59,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59" (1/1) ... [2020-04-18 15:31:59,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:31:59,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:31:59,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:31:59,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:31:59,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59" (1/1) ... [2020-04-18 15:31:59,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59" (1/1) ... [2020-04-18 15:31:59,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59" (1/1) ... [2020-04-18 15:31:59,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59" (1/1) ... [2020-04-18 15:31:59,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59" (1/1) ... [2020-04-18 15:31:59,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59" (1/1) ... [2020-04-18 15:31:59,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59" (1/1) ... [2020-04-18 15:31:59,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:31:59,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:31:59,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:31:59,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:31:59,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59" (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 15:31:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:31:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:31:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:31:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:31:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:31:59,656 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:31:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:31:59,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:31:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:31:59,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:31:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 15:31:59,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 15:31:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:31:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:31:59,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:31:59,660 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 15:32:00,087 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:32:00,088 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:32:00,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:32:00 BoogieIcfgContainer [2020-04-18 15:32:00,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:32:00,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:32:00,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:32:00,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:32:00,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:31:58" (1/3) ... [2020-04-18 15:32:00,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2054e75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:32:00, skipping insertion in model container [2020-04-18 15:32:00,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:59" (2/3) ... [2020-04-18 15:32:00,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2054e75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:32:00, skipping insertion in model container [2020-04-18 15:32:00,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:32:00" (3/3) ... [2020-04-18 15:32:00,108 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2020-04-18 15:32:00,116 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:32:00,116 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:32:00,124 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:32:00,126 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:32:00,153 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,153 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,153 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,153 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,154 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,154 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,155 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,155 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,155 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,156 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,156 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,156 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,157 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,157 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,157 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,157 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,158 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,158 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,159 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,159 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,159 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,159 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,160 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,160 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,164 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,164 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,165 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,165 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,171 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,171 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,171 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,172 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,174 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,175 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,175 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,175 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,179 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,179 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,180 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,180 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:32:00,195 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 15:32:00,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:32:00,213 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:32:00,213 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:32:00,214 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:32:00,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:32:00,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:32:00,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:32:00,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:32:00,231 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 82 transitions, 184 flow [2020-04-18 15:32:00,232 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-18 15:32:00,279 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-18 15:32:00,280 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:32:00,285 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 15:32:00,289 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-18 15:32:00,314 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-18 15:32:00,314 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:32:00,315 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 15:32:00,318 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 15:32:00,319 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:32:01,796 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 15:32:01,862 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2807 [2020-04-18 15:32:01,863 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-04-18 15:32:01,868 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-18 15:32:01,955 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-18 15:32:01,957 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-18 15:32:01,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:32:01,971 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:01,972 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:01,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:01,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:01,979 INFO L82 PathProgramCache]: Analyzing trace with hash 91051740, now seen corresponding path program 1 times [2020-04-18 15:32:01,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:01,987 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [561067215] [2020-04-18 15:32:02,003 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:02,016 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:32:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 15:32:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:32:02,019 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:02,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:02,019 INFO L82 PathProgramCache]: Analyzing trace with hash 91051740, now seen corresponding path program 2 times [2020-04-18 15:32:02,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:02,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233043923] [2020-04-18 15:32:02,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:02,215 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 15:32:02,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233043923] [2020-04-18 15:32:02,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:02,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:32:02,219 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:02,220 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:02,223 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:32:02,223 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:02,227 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:32:02,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:32:02,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:32:02,240 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-04-18 15:32:02,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:02,247 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 15:32:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 15:32:02,251 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:02,252 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [561067215] [2020-04-18 15:32:02,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:02,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:32:02,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [561067215] [2020-04-18 15:32:02,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:32:02,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:02,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:32:02,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:32:02,268 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-18 15:32:02,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:02,320 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-18 15:32:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:32:02,322 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 15:32:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:02,371 INFO L225 Difference]: With dead ends: 850 [2020-04-18 15:32:02,372 INFO L226 Difference]: Without dead ends: 706 [2020-04-18 15:32:02,378 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:32:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-18 15:32:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-18 15:32:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-18 15:32:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-18 15:32:02,510 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-18 15:32:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:02,511 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-18 15:32:02,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:32:02,512 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-18 15:32:02,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:32:02,514 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:02,514 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:02,514 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:02,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:02,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1472387704, now seen corresponding path program 1 times [2020-04-18 15:32:02,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:02,515 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1599289922] [2020-04-18 15:32:02,516 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:02,517 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 15:32:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:32:02,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:32:02,518 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:02,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:02,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1472387704, now seen corresponding path program 2 times [2020-04-18 15:32:02,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:02,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584793957] [2020-04-18 15:32:02,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:02,727 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 15:32:02,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584793957] [2020-04-18 15:32:02,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:02,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:32:02,728 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:02,731 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:02,734 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 15:32:02,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:02,746 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:32:02,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:02,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:32:02,747 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 15:32:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:02,761 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 15:32:02,762 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 15:32:02,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:02,763 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1599289922] [2020-04-18 15:32:02,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:02,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:32:02,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1599289922] [2020-04-18 15:32:02,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:32:02,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:02,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:02,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:32:02,769 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-18 15:32:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:02,805 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-18 15:32:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:32:02,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 15:32:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:02,811 INFO L225 Difference]: With dead ends: 778 [2020-04-18 15:32:02,811 INFO L226 Difference]: Without dead ends: 634 [2020-04-18 15:32:02,816 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 15:32:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-18 15:32:02,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-18 15:32:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-18 15:32:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-18 15:32:02,851 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-18 15:32:02,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:02,852 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-18 15:32:02,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:32:02,852 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-18 15:32:02,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:32:02,859 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:02,859 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:02,859 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:02,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:02,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1607812272, now seen corresponding path program 1 times [2020-04-18 15:32:02,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:02,863 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [791131553] [2020-04-18 15:32:02,863 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:02,865 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-04-18 15:32:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-04-18 15:32:02,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:32:02,867 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:02,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:02,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1607812272, now seen corresponding path program 2 times [2020-04-18 15:32:02,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:02,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648037509] [2020-04-18 15:32:02,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:02,965 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 15:32:02,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648037509] [2020-04-18 15:32:02,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:02,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:32:02,966 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:02,967 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:02,969 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-04-18 15:32:02,969 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:02,979 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:32:02,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:02,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:32:02,980 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2020-04-18 15:32:02,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:02,992 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-04-18 15:32:02,993 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-04-18 15:32:02,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:02,993 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [791131553] [2020-04-18 15:32:02,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:02,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:32:02,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [791131553] [2020-04-18 15:32:02,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:32:02,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:02,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:02,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:32:02,995 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-18 15:32:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:03,016 INFO L93 Difference]: Finished difference Result 688 states and 2256 transitions. [2020-04-18 15:32:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:32:03,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 15:32:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:03,021 INFO L225 Difference]: With dead ends: 688 [2020-04-18 15:32:03,021 INFO L226 Difference]: Without dead ends: 580 [2020-04-18 15:32:03,021 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 15:32:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-04-18 15:32:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2020-04-18 15:32:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-04-18 15:32:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1932 transitions. [2020-04-18 15:32:03,041 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1932 transitions. Word has length 12 [2020-04-18 15:32:03,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:03,042 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 1932 transitions. [2020-04-18 15:32:03,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:32:03,042 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1932 transitions. [2020-04-18 15:32:03,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:32:03,043 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:03,043 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:03,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:03,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:03,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1718865431, now seen corresponding path program 1 times [2020-04-18 15:32:03,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:03,044 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1225083720] [2020-04-18 15:32:03,045 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:03,046 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 58 transitions. [2020-04-18 15:32:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 15:32:03,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:32:03,047 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:03,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:03,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1718865431, now seen corresponding path program 2 times [2020-04-18 15:32:03,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:03,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849871223] [2020-04-18 15:32:03,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:03,177 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 15:32:03,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849871223] [2020-04-18 15:32:03,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:03,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:32:03,179 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:03,180 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:03,184 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-04-18 15:32:03,184 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:03,334 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:32:03,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:32:03,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:32:03,336 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 8 states. [2020-04-18 15:32:03,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:03,363 INFO L93 Difference]: Finished difference Result 34 states and 58 transitions. [2020-04-18 15:32:03,363 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 58 transitions. [2020-04-18 15:32:03,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:03,364 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1225083720] [2020-04-18 15:32:03,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:03,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:32:03,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1225083720] [2020-04-18 15:32:03,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:32:03,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:03,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:32:03,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:32:03,366 INFO L87 Difference]: Start difference. First operand 580 states and 1932 transitions. Second operand 8 states. [2020-04-18 15:32:03,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:03,420 INFO L93 Difference]: Finished difference Result 751 states and 2457 transitions. [2020-04-18 15:32:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:32:03,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 15:32:03,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:03,424 INFO L225 Difference]: With dead ends: 751 [2020-04-18 15:32:03,424 INFO L226 Difference]: Without dead ends: 358 [2020-04-18 15:32:03,424 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:32:03,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-04-18 15:32:03,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-04-18 15:32:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-04-18 15:32:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1128 transitions. [2020-04-18 15:32:03,436 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1128 transitions. Word has length 13 [2020-04-18 15:32:03,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:03,437 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 1128 transitions. [2020-04-18 15:32:03,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:32:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1128 transitions. [2020-04-18 15:32:03,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:32:03,438 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:03,438 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:03,438 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:03,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:03,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1081404616, now seen corresponding path program 1 times [2020-04-18 15:32:03,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:03,439 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [996421788] [2020-04-18 15:32:03,440 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:03,441 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 102 transitions. [2020-04-18 15:32:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-04-18 15:32:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:32:03,442 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:03,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:03,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1745220586, now seen corresponding path program 2 times [2020-04-18 15:32:03,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:03,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731514126] [2020-04-18 15:32:03,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:03,489 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 15:32:03,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731514126] [2020-04-18 15:32:03,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:03,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:03,491 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:03,492 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:03,496 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-04-18 15:32:03,496 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:03,587 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:32:03,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:32:03,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:32:03,588 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 8 states. [2020-04-18 15:32:03,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:03,661 INFO L93 Difference]: Finished difference Result 60 states and 115 transitions. [2020-04-18 15:32:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 115 transitions. [2020-04-18 15:32:03,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:32:03,662 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:32:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1081404616, now seen corresponding path program 3 times [2020-04-18 15:32:03,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:03,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684549673] [2020-04-18 15:32:03,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:03,730 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 15:32:03,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684549673] [2020-04-18 15:32:03,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:03,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:32:03,731 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:03,733 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:03,737 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-04-18 15:32:03,738 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:03,793 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:32:03,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:32:03,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:32:03,793 INFO L87 Difference]: Start difference. First operand 60 states and 115 transitions. Second operand 6 states. [2020-04-18 15:32:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:03,827 INFO L93 Difference]: Finished difference Result 60 states and 115 transitions. [2020-04-18 15:32:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 115 transitions. [2020-04-18 15:32:03,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:03,828 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [996421788] [2020-04-18 15:32:03,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:03,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:32:03,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [996421788] [2020-04-18 15:32:03,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:32:03,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:03,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:32:03,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:32:03,830 INFO L87 Difference]: Start difference. First operand 358 states and 1128 transitions. Second operand 11 states. [2020-04-18 15:32:03,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:03,958 INFO L93 Difference]: Finished difference Result 496 states and 1517 transitions. [2020-04-18 15:32:03,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 15:32:03,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-04-18 15:32:03,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:03,960 INFO L225 Difference]: With dead ends: 496 [2020-04-18 15:32:03,960 INFO L226 Difference]: Without dead ends: 262 [2020-04-18 15:32:03,961 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:32:03,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-04-18 15:32:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-04-18 15:32:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-04-18 15:32:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 771 transitions. [2020-04-18 15:32:03,970 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 771 transitions. Word has length 14 [2020-04-18 15:32:03,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:03,971 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 771 transitions. [2020-04-18 15:32:03,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:32:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 771 transitions. [2020-04-18 15:32:03,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:32:03,972 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:03,972 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:03,972 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:03,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:03,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1257194017, now seen corresponding path program 1 times [2020-04-18 15:32:03,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:03,973 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [636876663] [2020-04-18 15:32:03,974 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:03,976 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 240 transitions. [2020-04-18 15:32:03,977 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 15:32:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:32:03,977 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:03,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:03,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1852625697, now seen corresponding path program 2 times [2020-04-18 15:32:03,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:03,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315748950] [2020-04-18 15:32:03,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:04,021 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 15:32:04,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315748950] [2020-04-18 15:32:04,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:04,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:04,022 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:04,024 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:04,031 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 89 transitions. [2020-04-18 15:32:04,031 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:04,174 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:32:04,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:32:04,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:32:04,175 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 8 states. [2020-04-18 15:32:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:04,232 INFO L93 Difference]: Finished difference Result 114 states and 276 transitions. [2020-04-18 15:32:04,233 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 276 transitions. [2020-04-18 15:32:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:32:04,233 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:32:04,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:04,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1382462049, now seen corresponding path program 3 times [2020-04-18 15:32:04,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:04,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288297732] [2020-04-18 15:32:04,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:32:04,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288297732] [2020-04-18 15:32:04,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:04,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:04,337 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:04,340 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:04,344 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 15:32:04,344 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:04,454 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:32:04,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:32:04,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:32:04,455 INFO L87 Difference]: Start difference. First operand 114 states and 276 transitions. Second operand 8 states. [2020-04-18 15:32:04,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:04,545 INFO L93 Difference]: Finished difference Result 145 states and 324 transitions. [2020-04-18 15:32:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 324 transitions. [2020-04-18 15:32:04,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:32:04,546 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:32:04,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:04,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1257194017, now seen corresponding path program 4 times [2020-04-18 15:32:04,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:04,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915470386] [2020-04-18 15:32:04,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:04,629 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 15:32:04,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915470386] [2020-04-18 15:32:04,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:04,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:32:04,630 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:04,632 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:04,636 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 15:32:04,637 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:04,673 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:32:04,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:32:04,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:32:04,674 INFO L87 Difference]: Start difference. First operand 145 states and 324 transitions. Second operand 4 states. [2020-04-18 15:32:04,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:04,691 INFO L93 Difference]: Finished difference Result 145 states and 324 transitions. [2020-04-18 15:32:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 324 transitions. [2020-04-18 15:32:04,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:04,693 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [636876663] [2020-04-18 15:32:04,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:04,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:32:04,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [636876663] [2020-04-18 15:32:04,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 15:32:04,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:04,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 15:32:04,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:32:04,695 INFO L87 Difference]: Start difference. First operand 262 states and 771 transitions. Second operand 15 states. [2020-04-18 15:32:05,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:05,436 INFO L93 Difference]: Finished difference Result 319 states and 873 transitions. [2020-04-18 15:32:05,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-18 15:32:05,437 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2020-04-18 15:32:05,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:05,439 INFO L225 Difference]: With dead ends: 319 [2020-04-18 15:32:05,439 INFO L226 Difference]: Without dead ends: 238 [2020-04-18 15:32:05,440 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=455, Invalid=1707, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 15:32:05,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-04-18 15:32:05,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-04-18 15:32:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-04-18 15:32:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 659 transitions. [2020-04-18 15:32:05,447 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 659 transitions. Word has length 15 [2020-04-18 15:32:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:05,448 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 659 transitions. [2020-04-18 15:32:05,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 15:32:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 659 transitions. [2020-04-18 15:32:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:32:05,449 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:05,449 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:05,449 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:05,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:05,450 INFO L82 PathProgramCache]: Analyzing trace with hash -857649028, now seen corresponding path program 1 times [2020-04-18 15:32:05,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:05,450 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1420712760] [2020-04-18 15:32:05,451 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:05,453 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 378 transitions. [2020-04-18 15:32:05,454 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 15:32:05,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:32:05,455 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:05,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:05,455 INFO L82 PathProgramCache]: Analyzing trace with hash -85600614, now seen corresponding path program 2 times [2020-04-18 15:32:05,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:05,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22164361] [2020-04-18 15:32:05,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:05,516 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 15:32:05,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22164361] [2020-04-18 15:32:05,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:05,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:32:05,517 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:05,518 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:05,523 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 78 transitions. [2020-04-18 15:32:05,523 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:05,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 15:32:05,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 15:32:05,874 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:32:05,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:32:05,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:32:05,875 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 14 states. [2020-04-18 15:32:06,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:06,212 INFO L93 Difference]: Finished difference Result 168 states and 437 transitions. [2020-04-18 15:32:06,213 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 437 transitions. [2020-04-18 15:32:06,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:32:06,214 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:32:06,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:06,214 INFO L82 PathProgramCache]: Analyzing trace with hash -466783372, now seen corresponding path program 3 times [2020-04-18 15:32:06,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:06,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189733841] [2020-04-18 15:32:06,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:06,290 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 15:32:06,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189733841] [2020-04-18 15:32:06,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:06,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:32:06,291 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:06,293 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:06,296 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 44 transitions. [2020-04-18 15:32:06,296 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:06,441 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:32:06,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:32:06,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2020-04-18 15:32:06,442 INFO L87 Difference]: Start difference. First operand 168 states and 437 transitions. Second operand 9 states. [2020-04-18 15:32:06,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:06,638 INFO L93 Difference]: Finished difference Result 230 states and 564 transitions. [2020-04-18 15:32:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 564 transitions. [2020-04-18 15:32:06,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:32:06,640 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:32:06,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:06,640 INFO L82 PathProgramCache]: Analyzing trace with hash -857649028, now seen corresponding path program 4 times [2020-04-18 15:32:06,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:06,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532448356] [2020-04-18 15:32:06,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:06,729 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 15:32:06,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532448356] [2020-04-18 15:32:06,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:06,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:06,730 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:06,731 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:06,736 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 74 transitions. [2020-04-18 15:32:06,736 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:06,905 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:32:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:32:06,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=937, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 15:32:06,906 INFO L87 Difference]: Start difference. First operand 230 states and 564 transitions. Second operand 7 states. [2020-04-18 15:32:06,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:06,954 INFO L93 Difference]: Finished difference Result 230 states and 564 transitions. [2020-04-18 15:32:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 564 transitions. [2020-04-18 15:32:06,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:06,956 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1420712760] [2020-04-18 15:32:06,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:06,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:32:06,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1420712760] [2020-04-18 15:32:06,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 15:32:06,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:06,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 15:32:06,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 15:32:06,958 INFO L87 Difference]: Start difference. First operand 238 states and 659 transitions. Second operand 25 states. [2020-04-18 15:32:07,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:07,790 INFO L93 Difference]: Finished difference Result 247 states and 617 transitions. [2020-04-18 15:32:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-18 15:32:07,794 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 16 [2020-04-18 15:32:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:07,796 INFO L225 Difference]: With dead ends: 247 [2020-04-18 15:32:07,796 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 15:32:07,797 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=526, Invalid=2336, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 15:32:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 15:32:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 15:32:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 15:32:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 443 transitions. [2020-04-18 15:32:07,803 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 443 transitions. Word has length 16 [2020-04-18 15:32:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:07,803 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 443 transitions. [2020-04-18 15:32:07,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 15:32:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 443 transitions. [2020-04-18 15:32:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:32:07,804 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:07,804 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:07,805 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:07,805 INFO L82 PathProgramCache]: Analyzing trace with hash -981483084, now seen corresponding path program 1 times [2020-04-18 15:32:07,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:07,805 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [801083694] [2020-04-18 15:32:07,806 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:07,809 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 542 transitions. [2020-04-18 15:32:07,811 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 15:32:07,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:32:07,812 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:07,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1641348500, now seen corresponding path program 2 times [2020-04-18 15:32:07,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:07,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675083913] [2020-04-18 15:32:07,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:07,867 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 15:32:07,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675083913] [2020-04-18 15:32:07,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:07,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:32:07,868 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:07,869 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:07,874 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 83 transitions. [2020-04-18 15:32:07,875 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:08,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 15:32:08,170 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 15:32:08,251 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:32:08,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:32:08,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:32:08,252 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 14 states. [2020-04-18 15:32:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:08,739 INFO L93 Difference]: Finished difference Result 246 states and 690 transitions. [2020-04-18 15:32:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 690 transitions. [2020-04-18 15:32:08,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:32:08,740 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:32:08,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:08,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1585382406, now seen corresponding path program 3 times [2020-04-18 15:32:08,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:08,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022217720] [2020-04-18 15:32:08,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:08,805 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 15:32:08,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022217720] [2020-04-18 15:32:08,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:08,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:32:08,806 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:08,807 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:08,812 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 51 transitions. [2020-04-18 15:32:08,812 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:08,963 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:32:08,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:32:08,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2020-04-18 15:32:08,964 INFO L87 Difference]: Start difference. First operand 246 states and 690 transitions. Second operand 9 states. [2020-04-18 15:32:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:09,235 INFO L93 Difference]: Finished difference Result 359 states and 942 transitions. [2020-04-18 15:32:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 942 transitions. [2020-04-18 15:32:09,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:32:09,237 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:32:09,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:09,237 INFO L82 PathProgramCache]: Analyzing trace with hash -817315854, now seen corresponding path program 4 times [2020-04-18 15:32:09,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:09,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829844754] [2020-04-18 15:32:09,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:09,296 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 15:32:09,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829844754] [2020-04-18 15:32:09,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:09,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:09,298 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:09,299 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:09,305 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 86 transitions. [2020-04-18 15:32:09,305 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:09,466 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:32:09,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:32:09,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1064, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 15:32:09,468 INFO L87 Difference]: Start difference. First operand 359 states and 942 transitions. Second operand 7 states. [2020-04-18 15:32:09,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:09,551 INFO L93 Difference]: Finished difference Result 393 states and 987 transitions. [2020-04-18 15:32:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 987 transitions. [2020-04-18 15:32:09,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:32:09,553 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:32:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:09,553 INFO L82 PathProgramCache]: Analyzing trace with hash -981483084, now seen corresponding path program 5 times [2020-04-18 15:32:09,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:09,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821190973] [2020-04-18 15:32:09,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:09,658 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 15:32:09,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821190973] [2020-04-18 15:32:09,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:09,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:32:09,659 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:09,661 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:09,669 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-04-18 15:32:09,669 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:09,812 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:32:09,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:32:09,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1255, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 15:32:09,814 INFO L87 Difference]: Start difference. First operand 393 states and 987 transitions. Second operand 8 states. [2020-04-18 15:32:09,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:09,886 INFO L93 Difference]: Finished difference Result 393 states and 987 transitions. [2020-04-18 15:32:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 987 transitions. [2020-04-18 15:32:09,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:09,888 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [801083694] [2020-04-18 15:32:09,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:09,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:32:09,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [801083694] [2020-04-18 15:32:09,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-04-18 15:32:09,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-04-18 15:32:09,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1329, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 15:32:09,890 INFO L87 Difference]: Start difference. First operand 182 states and 443 transitions. Second operand 26 states. [2020-04-18 15:32:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:10,515 INFO L93 Difference]: Finished difference Result 165 states and 373 transitions. [2020-04-18 15:32:10,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-18 15:32:10,516 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 17 [2020-04-18 15:32:10,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:10,517 INFO L225 Difference]: With dead ends: 165 [2020-04-18 15:32:10,517 INFO L226 Difference]: Without dead ends: 132 [2020-04-18 15:32:10,518 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=552, Invalid=2640, Unknown=0, NotChecked=0, Total=3192 [2020-04-18 15:32:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-18 15:32:10,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-18 15:32:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-18 15:32:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 295 transitions. [2020-04-18 15:32:10,522 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 295 transitions. Word has length 17 [2020-04-18 15:32:10,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:10,522 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 295 transitions. [2020-04-18 15:32:10,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-04-18 15:32:10,522 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 295 transitions. [2020-04-18 15:32:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:32:10,523 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:10,523 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:10,523 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:10,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1311703103, now seen corresponding path program 1 times [2020-04-18 15:32:10,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:10,524 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1399756529] [2020-04-18 15:32:10,525 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:10,531 INFO L259 McrAutomatonBuilder]: Finished intersection with 354 states and 1134 transitions. [2020-04-18 15:32:10,533 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-04-18 15:32:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:32:10,535 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:10,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:10,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1946502321, now seen corresponding path program 2 times [2020-04-18 15:32:10,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:10,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654215203] [2020-04-18 15:32:10,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:10,583 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 15:32:10,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654215203] [2020-04-18 15:32:10,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:10,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:10,584 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:10,586 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:10,595 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 147 transitions. [2020-04-18 15:32:10,595 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:10,679 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:32:10,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:32:10,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:32:10,679 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 8 states. [2020-04-18 15:32:10,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:10,739 INFO L93 Difference]: Finished difference Result 474 states and 1460 transitions. [2020-04-18 15:32:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1460 transitions. [2020-04-18 15:32:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:32:10,741 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:32:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:10,741 INFO L82 PathProgramCache]: Analyzing trace with hash -436496835, now seen corresponding path program 3 times [2020-04-18 15:32:10,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:10,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765102848] [2020-04-18 15:32:10,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:10,776 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 15:32:10,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765102848] [2020-04-18 15:32:10,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:10,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:10,778 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:10,779 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:10,787 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 77 transitions. [2020-04-18 15:32:10,787 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:10,833 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:32:10,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:32:10,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:32:10,834 INFO L87 Difference]: Start difference. First operand 474 states and 1460 transitions. Second operand 6 states. [2020-04-18 15:32:10,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:10,891 INFO L93 Difference]: Finished difference Result 762 states and 2300 transitions. [2020-04-18 15:32:10,891 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 2300 transitions. [2020-04-18 15:32:10,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:32:10,894 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:32:10,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:10,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1475870333, now seen corresponding path program 4 times [2020-04-18 15:32:10,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:10,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180347162] [2020-04-18 15:32:10,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:10,956 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 15:32:10,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180347162] [2020-04-18 15:32:10,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:10,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:32:10,957 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:10,958 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:10,967 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 81 transitions. [2020-04-18 15:32:10,968 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:11,178 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:32:11,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:32:11,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:32:11,180 INFO L87 Difference]: Start difference. First operand 762 states and 2300 transitions. Second operand 9 states. [2020-04-18 15:32:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:11,380 INFO L93 Difference]: Finished difference Result 782 states and 2320 transitions. [2020-04-18 15:32:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 2320 transitions. [2020-04-18 15:32:11,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:32:11,383 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:32:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:11,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1311703103, now seen corresponding path program 5 times [2020-04-18 15:32:11,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:11,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303323463] [2020-04-18 15:32:11,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:11,447 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 15:32:11,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303323463] [2020-04-18 15:32:11,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:11,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:32:11,450 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:11,452 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:11,458 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 75 transitions. [2020-04-18 15:32:11,459 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:11,577 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:32:11,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:32:11,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2020-04-18 15:32:11,578 INFO L87 Difference]: Start difference. First operand 782 states and 2320 transitions. Second operand 10 states. [2020-04-18 15:32:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:11,738 INFO L93 Difference]: Finished difference Result 782 states and 2320 transitions. [2020-04-18 15:32:11,738 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 2320 transitions. [2020-04-18 15:32:11,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:11,740 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1399756529] [2020-04-18 15:32:11,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:11,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 15:32:11,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1399756529] [2020-04-18 15:32:11,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 15:32:11,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:11,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 15:32:11,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2020-04-18 15:32:11,742 INFO L87 Difference]: Start difference. First operand 132 states and 295 transitions. Second operand 19 states. [2020-04-18 15:32:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:12,398 INFO L93 Difference]: Finished difference Result 121 states and 271 transitions. [2020-04-18 15:32:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-18 15:32:12,398 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2020-04-18 15:32:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:12,400 INFO L225 Difference]: With dead ends: 121 [2020-04-18 15:32:12,400 INFO L226 Difference]: Without dead ends: 112 [2020-04-18 15:32:12,402 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=553, Invalid=2203, Unknown=0, NotChecked=0, Total=2756 [2020-04-18 15:32:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-18 15:32:12,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-18 15:32:12,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-18 15:32:12,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 255 transitions. [2020-04-18 15:32:12,406 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 255 transitions. Word has length 19 [2020-04-18 15:32:12,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:12,407 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 255 transitions. [2020-04-18 15:32:12,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 15:32:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 255 transitions. [2020-04-18 15:32:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:32:12,407 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:32:12,407 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:32:12,408 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:32:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:12,408 INFO L82 PathProgramCache]: Analyzing trace with hash 188961609, now seen corresponding path program 1 times [2020-04-18 15:32:12,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:32:12,408 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2131498490] [2020-04-18 15:32:12,409 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:12,421 INFO L259 McrAutomatonBuilder]: Finished intersection with 706 states and 2442 transitions. [2020-04-18 15:32:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-04-18 15:32:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:32:12,429 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:32:12,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:12,430 INFO L82 PathProgramCache]: Analyzing trace with hash -736929817, now seen corresponding path program 2 times [2020-04-18 15:32:12,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:12,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716540214] [2020-04-18 15:32:12,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:12,470 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 15:32:12,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716540214] [2020-04-18 15:32:12,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:12,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:12,471 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:12,472 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:12,485 INFO L259 McrAutomatonBuilder]: Finished intersection with 89 states and 189 transitions. [2020-04-18 15:32:12,485 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:12,616 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:32:12,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:32:12,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:32:12,617 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 8 states. [2020-04-18 15:32:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:12,679 INFO L93 Difference]: Finished difference Result 1066 states and 3660 transitions. [2020-04-18 15:32:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3660 transitions. [2020-04-18 15:32:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:32:12,682 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:32:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:12,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1432336007, now seen corresponding path program 3 times [2020-04-18 15:32:12,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:12,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434497399] [2020-04-18 15:32:12,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:12,722 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 15:32:12,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434497399] [2020-04-18 15:32:12,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:12,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:12,723 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:12,725 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:12,733 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 79 transitions. [2020-04-18 15:32:12,733 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:12,776 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:32:12,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:32:12,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:32:12,776 INFO L87 Difference]: Start difference. First operand 1066 states and 3660 transitions. Second operand 6 states. [2020-04-18 15:32:12,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:12,835 INFO L93 Difference]: Finished difference Result 1726 states and 5822 transitions. [2020-04-18 15:32:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 5822 transitions. [2020-04-18 15:32:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:32:12,839 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:32:12,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:12,839 INFO L82 PathProgramCache]: Analyzing trace with hash 971181767, now seen corresponding path program 4 times [2020-04-18 15:32:12,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:12,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532816840] [2020-04-18 15:32:12,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:12,912 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 15:32:12,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532816840] [2020-04-18 15:32:12,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:12,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:32:12,913 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:12,915 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:12,922 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 83 transitions. [2020-04-18 15:32:12,923 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:13,076 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:32:13,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:32:13,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:32:13,076 INFO L87 Difference]: Start difference. First operand 1726 states and 5822 transitions. Second operand 9 states. [2020-04-18 15:32:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:13,372 INFO L93 Difference]: Finished difference Result 1846 states and 6010 transitions. [2020-04-18 15:32:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 6010 transitions. [2020-04-18 15:32:13,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:32:13,377 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:32:13,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:13,377 INFO L82 PathProgramCache]: Analyzing trace with hash 188682519, now seen corresponding path program 5 times [2020-04-18 15:32:13,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:13,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971084062] [2020-04-18 15:32:13,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:13,415 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 15:32:13,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971084062] [2020-04-18 15:32:13,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:13,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:32:13,417 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:13,418 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:13,425 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 81 transitions. [2020-04-18 15:32:13,426 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:13,536 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:32:13,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:32:13,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2020-04-18 15:32:13,537 INFO L87 Difference]: Start difference. First operand 1846 states and 6010 transitions. Second operand 7 states. [2020-04-18 15:32:13,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:13,614 INFO L93 Difference]: Finished difference Result 3032 states and 9408 transitions. [2020-04-18 15:32:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 9408 transitions. [2020-04-18 15:32:13,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:32:13,619 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:32:13,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:13,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2121239349, now seen corresponding path program 6 times [2020-04-18 15:32:13,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:13,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942384996] [2020-04-18 15:32:13,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:13,685 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 15:32:13,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942384996] [2020-04-18 15:32:13,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:13,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:32:13,686 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:13,688 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:13,695 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 81 transitions. [2020-04-18 15:32:13,696 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:13,831 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:32:13,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:32:13,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 15:32:13,832 INFO L87 Difference]: Start difference. First operand 3032 states and 9408 transitions. Second operand 10 states. [2020-04-18 15:32:14,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:14,146 INFO L93 Difference]: Finished difference Result 3056 states and 9424 transitions. [2020-04-18 15:32:14,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 9424 transitions. [2020-04-18 15:32:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:32:14,152 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:32:14,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:32:14,152 INFO L82 PathProgramCache]: Analyzing trace with hash -62971415, now seen corresponding path program 7 times [2020-04-18 15:32:14,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:32:14,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271774539] [2020-04-18 15:32:14,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:32:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:32:14,204 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 15:32:14,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271774539] [2020-04-18 15:32:14,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:32:14,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:32:14,205 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:32:14,208 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:32:14,258 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-04-18 15:32:14,258 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:32:14,319 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:32:14,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:32:14,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 15:32:14,320 INFO L87 Difference]: Start difference. First operand 3056 states and 9424 transitions. Second operand 5 states. [2020-04-18 15:32:14,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:14,389 INFO L93 Difference]: Finished difference Result 4916 states and 14446 transitions. [2020-04-18 15:32:14,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 14446 transitions. [2020-04-18 15:32:14,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:14,396 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2131498490] [2020-04-18 15:32:14,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:32:14,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:32:14,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2131498490] [2020-04-18 15:32:14,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 15:32:14,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:32:14,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 15:32:14,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 15:32:14,399 INFO L87 Difference]: Start difference. First operand 112 states and 255 transitions. Second operand 25 states. [2020-04-18 15:32:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:32:16,159 INFO L93 Difference]: Finished difference Result 179 states and 402 transitions. [2020-04-18 15:32:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-04-18 15:32:16,159 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 21 [2020-04-18 15:32:16,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:32:16,160 INFO L225 Difference]: With dead ends: 179 [2020-04-18 15:32:16,160 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:32:16,162 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2455 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1150, Invalid=7040, Unknown=0, NotChecked=0, Total=8190 [2020-04-18 15:32:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:32:16,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:32:16,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:32:16,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:32:16,163 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-04-18 15:32:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:32:16,164 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:32:16,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 15:32:16,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:32:16,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:32:16,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:32:16 BasicIcfg [2020-04-18 15:32:16,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:32:16,169 INFO L168 Benchmark]: Toolchain (without parser) took 17470.01 ms. Allocated memory was 138.9 MB in the beginning and 466.1 MB in the end (delta: 327.2 MB). Free memory was 102.2 MB in the beginning and 408.0 MB in the end (delta: -305.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:32:16,170 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 15:32:16,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.48 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 159.4 MB in the end (delta: -59.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:32:16,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 202.9 MB. Free memory was 159.4 MB in the beginning and 157.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:32:16,172 INFO L168 Benchmark]: Boogie Preprocessor took 33.33 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 155.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:32:16,172 INFO L168 Benchmark]: RCFGBuilder took 517.58 ms. Allocated memory is still 202.9 MB. Free memory was 155.1 MB in the beginning and 131.6 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:32:16,172 INFO L168 Benchmark]: TraceAbstraction took 16067.99 ms. Allocated memory was 202.9 MB in the beginning and 466.1 MB in the end (delta: 263.2 MB). Free memory was 130.9 MB in the beginning and 408.0 MB in the end (delta: -277.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:32:16,175 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 772.48 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 159.4 MB in the end (delta: -59.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 202.9 MB. Free memory was 159.4 MB in the beginning and 157.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.33 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 155.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 517.58 ms. Allocated memory is still 202.9 MB. Free memory was 155.1 MB in the beginning and 131.6 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16067.99 ms. Allocated memory was 202.9 MB in the beginning and 466.1 MB in the end (delta: 263.2 MB). Free memory was 130.9 MB in the beginning and 408.0 MB in the end (delta: -277.1 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: 1.6s, 93 ProgramPointsBefore, 39 ProgramPointsAfterwards, 82 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 933 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2807 CheckedPairsTotal, 63 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 5 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 222 SDtfs, 1201 SDslu, 1216 SDs, 0 SdLazy, 1712 SolverSat, 504 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 754 GetRequests, 416 SyntacticMatches, 12 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5318 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 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...