/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/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:03:43,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:03:43,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:03:43,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:03:43,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:03:43,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:03:43,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:03:43,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:03:43,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:03:43,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:03:43,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:03:43,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:03:43,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:03:43,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:03:43,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:03:43,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:03:43,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:03:43,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:03:43,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:03:43,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:03:43,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:03:43,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:03:43,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:03:43,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:03:43,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:03:43,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:03:43,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:03:43,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:03:43,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:03:43,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:03:43,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:03:43,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:03:43,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:03:43,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:03:43,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:03:43,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:03:43,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:03:43,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:03:43,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:03:43,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:03:43,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:03:43,416 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 15:03:43,434 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:03:43,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:03:43,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:03:43,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:03:43,436 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:03:43,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:03:43,437 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:03:43,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:03:43,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:03:43,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:03:43,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:03:43,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:03:43,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:03:43,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:03:43,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:03:43,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:03:43,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:03:43,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:03:43,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:03:43,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:03:43,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:03:43,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:03:43,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:03:43,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:03:43,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:03:43,441 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:03:43,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:03:43,442 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:03:43,442 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:03:43,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:03:43,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:03:43,755 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:03:43,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:03:43,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:03:43,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:03:43,784 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:03:43,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-04-18 15:03:43,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b63728f3/0bf4eec5fb94456ebab3b5d5664d9ec0/FLAG3a02c6fab [2020-04-18 15:03:44,427 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:03:44,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-04-18 15:03:44,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b63728f3/0bf4eec5fb94456ebab3b5d5664d9ec0/FLAG3a02c6fab [2020-04-18 15:03:44,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b63728f3/0bf4eec5fb94456ebab3b5d5664d9ec0 [2020-04-18 15:03:44,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:03:44,738 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:03:44,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:03:44,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:03:44,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:03:44,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:03:44" (1/1) ... [2020-04-18 15:03:44,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e09c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:44, skipping insertion in model container [2020-04-18 15:03:44,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:03:44" (1/1) ... [2020-04-18 15:03:44,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:03:44,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:03:45,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:03:45,385 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:03:45,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:03:45,559 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:03:45,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45 WrapperNode [2020-04-18 15:03:45,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:03:45,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:03:45,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:03:45,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:03:45,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45" (1/1) ... [2020-04-18 15:03:45,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45" (1/1) ... [2020-04-18 15:03:45,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:03:45,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:03:45,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:03:45,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:03:45,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45" (1/1) ... [2020-04-18 15:03:45,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45" (1/1) ... [2020-04-18 15:03:45,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45" (1/1) ... [2020-04-18 15:03:45,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45" (1/1) ... [2020-04-18 15:03:45,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45" (1/1) ... [2020-04-18 15:03:45,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45" (1/1) ... [2020-04-18 15:03:45,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45" (1/1) ... [2020-04-18 15:03:45,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:03:45,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:03:45,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:03:45,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:03:45,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45" (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 15:03:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:03:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:03:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:03:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:03:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:03:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:03:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:03:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:03:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:03:45,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:03:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:03:45,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:03:45,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:03:45,718 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 15:03:46,139 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:03:46,139 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:03:46,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:03:46 BoogieIcfgContainer [2020-04-18 15:03:46,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:03:46,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:03:46,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:03:46,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:03:46,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:03:44" (1/3) ... [2020-04-18 15:03:46,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd3351b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:03:46, skipping insertion in model container [2020-04-18 15:03:46,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:03:45" (2/3) ... [2020-04-18 15:03:46,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd3351b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:03:46, skipping insertion in model container [2020-04-18 15:03:46,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:03:46" (3/3) ... [2020-04-18 15:03:46,152 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-04-18 15:03:46,162 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:03:46,162 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:03:46,168 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:03:46,170 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:03:46,198 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,198 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,198 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,199 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,200 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,200 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,201 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,201 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,202 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,202 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,203 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,203 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,204 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,204 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,204 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,205 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,206 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,206 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,211 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,211 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,211 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,212 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,225 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,225 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,225 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,226 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,227 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,228 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,228 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,228 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:03:46,255 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:03:46,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:03:46,276 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:03:46,276 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:03:46,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:03:46,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:03:46,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:03:46,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:03:46,277 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:03:46,293 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:03:46,296 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:03:46,340 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:03:46,340 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:03:46,345 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:03:46,348 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:03:46,368 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:03:46,368 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:03:46,369 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:03:46,371 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:03:46,372 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:03:47,719 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 15:03:47,796 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-04-18 15:03:47,796 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-18 15:03:47,800 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 15:03:47,833 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 15:03:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 15:03:47,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:03:47,848 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:03:47,849 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:03:47,850 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:03:47,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:47,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-04-18 15:03:47,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:03:47,866 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1437817035] [2020-04-18 15:03:47,883 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:47,900 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:03:47,902 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:03:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:03:47,903 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:03:47,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:47,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 2 times [2020-04-18 15:03:47,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:47,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652731779] [2020-04-18 15:03:47,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:48,063 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 15:03:48,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652731779] [2020-04-18 15:03:48,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:48,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:03:48,067 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:48,068 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:48,070 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:03:48,070 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:48,074 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:48,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:03:48,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:03:48,081 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 15:03:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:48,085 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:03:48,085 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:03:48,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:03:48,086 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1437817035] [2020-04-18 15:03:48,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:03:48,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:03:48,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1437817035] [2020-04-18 15:03:48,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:03:48,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:03:48,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:03:48,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:03:48,096 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 15:03:48,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:48,116 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 15:03:48,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:03:48,118 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 15:03:48,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:03:48,137 INFO L225 Difference]: With dead ends: 362 [2020-04-18 15:03:48,138 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 15:03:48,139 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 15:03:48,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 15:03:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 15:03:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 15:03:48,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 15:03:48,227 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 15:03:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:03:48,228 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 15:03:48,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:03:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 15:03:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:03:48,230 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:03:48,230 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:03:48,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:03:48,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:48,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-04-18 15:03:48,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:03:48,232 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [172151790] [2020-04-18 15:03:48,232 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:48,233 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:03:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 15:03:48,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:03:48,234 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:03:48,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:48,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 2 times [2020-04-18 15:03:48,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:48,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348251430] [2020-04-18 15:03:48,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:48,364 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 15:03:48,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348251430] [2020-04-18 15:03:48,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:48,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:03:48,367 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:48,367 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:48,368 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:03:48,369 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:48,387 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:48,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:48,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:03:48,388 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 15:03:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:48,404 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 15:03:48,404 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 15:03:48,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:03:48,405 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [172151790] [2020-04-18 15:03:48,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:03:48,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:03:48,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [172151790] [2020-04-18 15:03:48,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:03:48,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:03:48,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:48,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:03:48,408 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 15:03:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:48,443 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 15:03:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:03:48,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:03:48,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:03:48,449 INFO L225 Difference]: With dead ends: 330 [2020-04-18 15:03:48,449 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 15:03:48,451 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 15:03:48,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 15:03:48,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 15:03:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 15:03:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 15:03:48,490 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 15:03:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:03:48,493 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 15:03:48,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:03:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 15:03:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:03:48,495 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:03:48,495 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:03:48,496 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:03:48,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:48,496 INFO L82 PathProgramCache]: Analyzing trace with hash -485254353, now seen corresponding path program 1 times [2020-04-18 15:03:48,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:03:48,497 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1315873644] [2020-04-18 15:03:48,498 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:48,499 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-04-18 15:03:48,500 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 15:03:48,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:03:48,502 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:03:48,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:48,502 INFO L82 PathProgramCache]: Analyzing trace with hash -485254353, now seen corresponding path program 2 times [2020-04-18 15:03:48,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:48,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199525024] [2020-04-18 15:03:48,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:48,609 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 15:03:48,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199525024] [2020-04-18 15:03:48,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:48,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:03:48,611 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:48,612 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:48,613 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:03:48,613 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:48,626 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:48,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:48,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:03:48,627 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 15:03:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:48,638 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2020-04-18 15:03:48,639 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-04-18 15:03:48,639 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:03:48,639 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1315873644] [2020-04-18 15:03:48,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:03:48,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:03:48,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1315873644] [2020-04-18 15:03:48,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:03:48,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:03:48,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:48,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:03:48,641 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-04-18 15:03:48,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:48,657 INFO L93 Difference]: Finished difference Result 302 states and 818 transitions. [2020-04-18 15:03:48,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:03:48,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 15:03:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:03:48,661 INFO L225 Difference]: With dead ends: 302 [2020-04-18 15:03:48,661 INFO L226 Difference]: Without dead ends: 254 [2020-04-18 15:03:48,661 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:03:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-04-18 15:03:48,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-04-18 15:03:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-04-18 15:03:48,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2020-04-18 15:03:48,683 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 10 [2020-04-18 15:03:48,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:03:48,687 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2020-04-18 15:03:48,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:03:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2020-04-18 15:03:48,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:03:48,689 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:03:48,689 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:03:48,690 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:03:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:48,690 INFO L82 PathProgramCache]: Analyzing trace with hash 2136948955, now seen corresponding path program 1 times [2020-04-18 15:03:48,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:03:48,690 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1422023953] [2020-04-18 15:03:48,691 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:48,692 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 52 transitions. [2020-04-18 15:03:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-04-18 15:03:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:03:48,693 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:03:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:48,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2136984415, now seen corresponding path program 2 times [2020-04-18 15:03:48,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:48,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055341361] [2020-04-18 15:03:48,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:48,758 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 15:03:48,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055341361] [2020-04-18 15:03:48,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:48,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:03:48,759 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:48,760 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:48,762 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-04-18 15:03:48,762 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:48,778 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:48,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:48,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:03:48,779 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2020-04-18 15:03:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:48,796 INFO L93 Difference]: Finished difference Result 34 states and 56 transitions. [2020-04-18 15:03:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 56 transitions. [2020-04-18 15:03:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:03:48,797 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:03:48,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:48,798 INFO L82 PathProgramCache]: Analyzing trace with hash 2136948955, now seen corresponding path program 3 times [2020-04-18 15:03:48,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:48,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706355838] [2020-04-18 15:03:48,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:48,853 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 15:03:48,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706355838] [2020-04-18 15:03:48,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:48,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:03:48,856 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:48,856 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:48,858 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 38 transitions. [2020-04-18 15:03:48,859 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:48,869 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:48,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:48,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:03:48,871 INFO L87 Difference]: Start difference. First operand 34 states and 56 transitions. Second operand 4 states. [2020-04-18 15:03:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:48,886 INFO L93 Difference]: Finished difference Result 34 states and 56 transitions. [2020-04-18 15:03:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 56 transitions. [2020-04-18 15:03:48,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:03:48,890 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1422023953] [2020-04-18 15:03:48,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:03:48,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:03:48,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1422023953] [2020-04-18 15:03:48,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:03:48,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:03:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:03:48,892 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand 5 states. [2020-04-18 15:03:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:48,961 INFO L93 Difference]: Finished difference Result 272 states and 732 transitions. [2020-04-18 15:03:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:03:48,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 15:03:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:03:48,965 INFO L225 Difference]: With dead ends: 272 [2020-04-18 15:03:48,965 INFO L226 Difference]: Without dead ends: 236 [2020-04-18 15:03:48,966 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:03:48,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-04-18 15:03:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2020-04-18 15:03:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-04-18 15:03:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 648 transitions. [2020-04-18 15:03:48,993 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 648 transitions. Word has length 11 [2020-04-18 15:03:48,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:03:48,993 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 648 transitions. [2020-04-18 15:03:48,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:03:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 648 transitions. [2020-04-18 15:03:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:03:48,995 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:03:48,995 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:03:48,995 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:03:48,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:48,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1801101265, now seen corresponding path program 1 times [2020-04-18 15:03:48,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:03:48,996 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [838745243] [2020-04-18 15:03:48,997 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:48,999 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 56 transitions. [2020-04-18 15:03:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 15:03:49,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:03:49,001 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:03:49,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:49,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1801101265, now seen corresponding path program 2 times [2020-04-18 15:03:49,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:49,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167822515] [2020-04-18 15:03:49,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:49,108 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 15:03:49,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167822515] [2020-04-18 15:03:49,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:49,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:03:49,109 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:49,110 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:49,113 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2020-04-18 15:03:49,114 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:49,133 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:03:49,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:49,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:03:49,134 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2020-04-18 15:03:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:49,163 INFO L93 Difference]: Finished difference Result 32 states and 56 transitions. [2020-04-18 15:03:49,163 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 56 transitions. [2020-04-18 15:03:49,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:03:49,164 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [838745243] [2020-04-18 15:03:49,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:03:49,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:03:49,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [838745243] [2020-04-18 15:03:49,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:03:49,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:03:49,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:49,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:03:49,166 INFO L87 Difference]: Start difference. First operand 236 states and 648 transitions. Second operand 5 states. [2020-04-18 15:03:49,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:49,212 INFO L93 Difference]: Finished difference Result 295 states and 790 transitions. [2020-04-18 15:03:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:03:49,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 15:03:49,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:03:49,216 INFO L225 Difference]: With dead ends: 295 [2020-04-18 15:03:49,216 INFO L226 Difference]: Without dead ends: 166 [2020-04-18 15:03:49,217 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:03:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-18 15:03:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-18 15:03:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-18 15:03:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 418 transitions. [2020-04-18 15:03:49,232 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 418 transitions. Word has length 12 [2020-04-18 15:03:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:03:49,232 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 418 transitions. [2020-04-18 15:03:49,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:03:49,232 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 418 transitions. [2020-04-18 15:03:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:03:49,233 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:03:49,233 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:03:49,234 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:03:49,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:49,235 INFO L82 PathProgramCache]: Analyzing trace with hash 594561061, now seen corresponding path program 1 times [2020-04-18 15:03:49,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:03:49,235 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [187351771] [2020-04-18 15:03:49,236 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:49,242 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 89 transitions. [2020-04-18 15:03:49,243 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 15:03:49,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:03:49,244 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:03:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:49,244 INFO L82 PathProgramCache]: Analyzing trace with hash -435479, now seen corresponding path program 2 times [2020-04-18 15:03:49,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:49,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687226122] [2020-04-18 15:03:49,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:49,366 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 15:03:49,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687226122] [2020-04-18 15:03:49,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:49,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:49,369 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:49,369 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:49,373 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-04-18 15:03:49,373 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:49,392 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:03:49,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:49,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:03:49,393 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 5 states. [2020-04-18 15:03:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:49,441 INFO L93 Difference]: Finished difference Result 56 states and 102 transitions. [2020-04-18 15:03:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 102 transitions. [2020-04-18 15:03:49,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:03:49,442 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:03:49,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:49,442 INFO L82 PathProgramCache]: Analyzing trace with hash 594561061, now seen corresponding path program 3 times [2020-04-18 15:03:49,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:49,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417286452] [2020-04-18 15:03:49,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:49,509 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 15:03:49,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417286452] [2020-04-18 15:03:49,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:49,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:03:49,510 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:49,512 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:49,514 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 15:03:49,515 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:49,534 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:49,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:49,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:03:49,535 INFO L87 Difference]: Start difference. First operand 56 states and 102 transitions. Second operand 5 states. [2020-04-18 15:03:49,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:49,574 INFO L93 Difference]: Finished difference Result 56 states and 102 transitions. [2020-04-18 15:03:49,574 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 102 transitions. [2020-04-18 15:03:49,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:03:49,575 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [187351771] [2020-04-18 15:03:49,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:03:49,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:03:49,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [187351771] [2020-04-18 15:03:49,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:03:49,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:03:49,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:03:49,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:03:49,577 INFO L87 Difference]: Start difference. First operand 166 states and 418 transitions. Second operand 7 states. [2020-04-18 15:03:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:49,666 INFO L93 Difference]: Finished difference Result 216 states and 525 transitions. [2020-04-18 15:03:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 15:03:49,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 15:03:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:03:49,667 INFO L225 Difference]: With dead ends: 216 [2020-04-18 15:03:49,667 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 15:03:49,668 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:03:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 15:03:49,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-04-18 15:03:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-04-18 15:03:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-04-18 15:03:49,672 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-04-18 15:03:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:03:49,672 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-04-18 15:03:49,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:03:49,672 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-04-18 15:03:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:03:49,673 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:03:49,673 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:03:49,673 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:03:49,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:49,674 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-04-18 15:03:49,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:03:49,674 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [274049951] [2020-04-18 15:03:49,675 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:49,677 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 240 transitions. [2020-04-18 15:03:49,678 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-04-18 15:03:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:03:49,679 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:03:49,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:49,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1557297703, now seen corresponding path program 2 times [2020-04-18 15:03:49,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:49,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054685219] [2020-04-18 15:03:49,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:49,737 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 15:03:49,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054685219] [2020-04-18 15:03:49,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:49,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:03:49,739 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:49,741 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:49,753 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 47 transitions. [2020-04-18 15:03:49,753 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:49,770 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:49,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:49,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:03:49,771 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 4 states. [2020-04-18 15:03:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:49,788 INFO L93 Difference]: Finished difference Result 122 states and 292 transitions. [2020-04-18 15:03:49,788 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 292 transitions. [2020-04-18 15:03:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:03:49,789 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:03:49,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:49,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1503670183, now seen corresponding path program 3 times [2020-04-18 15:03:49,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:49,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152368663] [2020-04-18 15:03:49,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:49,880 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 15:03:49,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152368663] [2020-04-18 15:03:49,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:49,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:49,881 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:49,883 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:49,888 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 97 transitions. [2020-04-18 15:03:49,888 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:49,904 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:03:49,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:49,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:03:49,904 INFO L87 Difference]: Start difference. First operand 122 states and 292 transitions. Second operand 5 states. [2020-04-18 15:03:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:49,949 INFO L93 Difference]: Finished difference Result 143 states and 321 transitions. [2020-04-18 15:03:49,949 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 321 transitions. [2020-04-18 15:03:49,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:03:49,950 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:03:49,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:49,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1251940929, now seen corresponding path program 4 times [2020-04-18 15:03:49,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:49,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878421483] [2020-04-18 15:03:49,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:49,995 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 15:03:49,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878421483] [2020-04-18 15:03:49,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:49,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:49,996 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:49,997 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:50,001 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 91 transitions. [2020-04-18 15:03:50,002 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:50,025 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:50,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:50,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:03:50,026 INFO L87 Difference]: Start difference. First operand 143 states and 321 transitions. Second operand 5 states. [2020-04-18 15:03:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:50,076 INFO L93 Difference]: Finished difference Result 178 states and 377 transitions. [2020-04-18 15:03:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 377 transitions. [2020-04-18 15:03:50,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:03:50,077 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:03:50,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:50,077 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 5 times [2020-04-18 15:03:50,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:50,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183679788] [2020-04-18 15:03:50,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:50,116 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 15:03:50,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183679788] [2020-04-18 15:03:50,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:50,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:03:50,117 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:50,118 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:50,120 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-04-18 15:03:50,121 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:50,146 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:50,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:50,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:03:50,147 INFO L87 Difference]: Start difference. First operand 178 states and 377 transitions. Second operand 4 states. [2020-04-18 15:03:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:50,159 INFO L93 Difference]: Finished difference Result 178 states and 377 transitions. [2020-04-18 15:03:50,159 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 377 transitions. [2020-04-18 15:03:50,159 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:03:50,160 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [274049951] [2020-04-18 15:03:50,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:03:50,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:03:50,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [274049951] [2020-04-18 15:03:50,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:03:50,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:03:50,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:03:50,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:03:50,162 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 10 states. [2020-04-18 15:03:50,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:50,504 INFO L93 Difference]: Finished difference Result 109 states and 223 transitions. [2020-04-18 15:03:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 15:03:50,505 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-04-18 15:03:50,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:03:50,506 INFO L225 Difference]: With dead ends: 109 [2020-04-18 15:03:50,506 INFO L226 Difference]: Without dead ends: 87 [2020-04-18 15:03:50,507 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=775, Unknown=0, NotChecked=0, Total=992 [2020-04-18 15:03:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-04-18 15:03:50,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-04-18 15:03:50,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-04-18 15:03:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 180 transitions. [2020-04-18 15:03:50,510 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 180 transitions. Word has length 14 [2020-04-18 15:03:50,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:03:50,511 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 180 transitions. [2020-04-18 15:03:50,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:03:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 180 transitions. [2020-04-18 15:03:50,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:03:50,511 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:03:50,512 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:03:50,512 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:03:50,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:50,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1643108637, now seen corresponding path program 1 times [2020-04-18 15:03:50,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:03:50,513 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1156408083] [2020-04-18 15:03:50,513 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:50,515 INFO L259 McrAutomatonBuilder]: Finished intersection with 130 states and 330 transitions. [2020-04-18 15:03:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-04-18 15:03:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:03:50,518 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:03:50,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:50,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1031588745, now seen corresponding path program 2 times [2020-04-18 15:03:50,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:50,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091338997] [2020-04-18 15:03:50,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:50,567 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 15:03:50,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091338997] [2020-04-18 15:03:50,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:50,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:03:50,568 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:50,570 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:50,575 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 15:03:50,575 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:50,584 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:50,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:50,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:03:50,585 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 4 states. [2020-04-18 15:03:50,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:50,605 INFO L93 Difference]: Finished difference Result 166 states and 414 transitions. [2020-04-18 15:03:50,606 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 414 transitions. [2020-04-18 15:03:50,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:03:50,606 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:03:50,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:50,607 INFO L82 PathProgramCache]: Analyzing trace with hash -630864375, now seen corresponding path program 3 times [2020-04-18 15:03:50,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:50,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281848756] [2020-04-18 15:03:50,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:50,663 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 15:03:50,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281848756] [2020-04-18 15:03:50,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:50,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:50,664 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:50,666 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:50,671 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 112 transitions. [2020-04-18 15:03:50,671 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:50,688 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:03:50,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:50,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:03:50,689 INFO L87 Difference]: Start difference. First operand 166 states and 414 transitions. Second operand 5 states. [2020-04-18 15:03:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:50,737 INFO L93 Difference]: Finished difference Result 195 states and 457 transitions. [2020-04-18 15:03:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 457 transitions. [2020-04-18 15:03:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:03:50,738 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:03:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:50,739 INFO L82 PathProgramCache]: Analyzing trace with hash 155463343, now seen corresponding path program 4 times [2020-04-18 15:03:50,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:50,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613514269] [2020-04-18 15:03:50,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:50,773 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 15:03:50,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613514269] [2020-04-18 15:03:50,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:50,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:50,774 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:50,775 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:50,779 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 100 transitions. [2020-04-18 15:03:50,780 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:50,799 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:50,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:50,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:03:50,800 INFO L87 Difference]: Start difference. First operand 195 states and 457 transitions. Second operand 5 states. [2020-04-18 15:03:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:50,851 INFO L93 Difference]: Finished difference Result 265 states and 604 transitions. [2020-04-18 15:03:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 604 transitions. [2020-04-18 15:03:50,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:03:50,853 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:03:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:50,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1727806603, now seen corresponding path program 5 times [2020-04-18 15:03:50,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:50,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383446091] [2020-04-18 15:03:50,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:50,881 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 15:03:50,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383446091] [2020-04-18 15:03:50,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:50,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:03:50,883 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:50,884 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:50,888 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 59 transitions. [2020-04-18 15:03:50,888 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:50,915 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:03:50,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:50,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:03:50,916 INFO L87 Difference]: Start difference. First operand 265 states and 604 transitions. Second operand 4 states. [2020-04-18 15:03:50,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:50,936 INFO L93 Difference]: Finished difference Result 308 states and 672 transitions. [2020-04-18 15:03:50,936 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 672 transitions. [2020-04-18 15:03:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:03:50,937 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:03:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:50,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1643108637, now seen corresponding path program 6 times [2020-04-18 15:03:50,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:50,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137854640] [2020-04-18 15:03:50,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:50,969 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 15:03:50,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137854640] [2020-04-18 15:03:50,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:50,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:50,971 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:50,972 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:50,976 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 71 transitions. [2020-04-18 15:03:50,976 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:51,151 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:03:51,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:03:51,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:03:51,152 INFO L87 Difference]: Start difference. First operand 308 states and 672 transitions. Second operand 7 states. [2020-04-18 15:03:51,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:51,184 INFO L93 Difference]: Finished difference Result 308 states and 672 transitions. [2020-04-18 15:03:51,184 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 672 transitions. [2020-04-18 15:03:51,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:03:51,186 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1156408083] [2020-04-18 15:03:51,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:03:51,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:03:51,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1156408083] [2020-04-18 15:03:51,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 15:03:51,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:03:51,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 15:03:51,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:03:51,187 INFO L87 Difference]: Start difference. First operand 87 states and 180 transitions. Second operand 13 states. [2020-04-18 15:03:51,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:51,538 INFO L93 Difference]: Finished difference Result 83 states and 155 transitions. [2020-04-18 15:03:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 15:03:51,538 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-04-18 15:03:51,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:03:51,539 INFO L225 Difference]: With dead ends: 83 [2020-04-18 15:03:51,539 INFO L226 Difference]: Without dead ends: 68 [2020-04-18 15:03:51,540 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=901, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 15:03:51,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-18 15:03:51,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-18 15:03:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-18 15:03:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 125 transitions. [2020-04-18 15:03:51,543 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 125 transitions. Word has length 15 [2020-04-18 15:03:51,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:03:51,543 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 125 transitions. [2020-04-18 15:03:51,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 15:03:51,543 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 125 transitions. [2020-04-18 15:03:51,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:03:51,544 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:03:51,544 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:03:51,544 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:03:51,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:51,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-04-18 15:03:51,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:03:51,545 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [296546652] [2020-04-18 15:03:51,545 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:51,548 INFO L259 McrAutomatonBuilder]: Finished intersection with 170 states and 448 transitions. [2020-04-18 15:03:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-04-18 15:03:51,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:03:51,551 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:03:51,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:51,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1915367296, now seen corresponding path program 2 times [2020-04-18 15:03:51,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:51,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966751668] [2020-04-18 15:03:51,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:51,585 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 15:03:51,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966751668] [2020-04-18 15:03:51,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:51,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:03:51,586 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:51,588 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:51,591 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 65 transitions. [2020-04-18 15:03:51,592 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:51,601 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:51,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:51,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:03:51,602 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 4 states. [2020-04-18 15:03:51,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:51,619 INFO L93 Difference]: Finished difference Result 218 states and 564 transitions. [2020-04-18 15:03:51,619 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 564 transitions. [2020-04-18 15:03:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:03:51,620 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:03:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:51,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1580734788, now seen corresponding path program 3 times [2020-04-18 15:03:51,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:51,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87087761] [2020-04-18 15:03:51,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:51,656 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 15:03:51,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87087761] [2020-04-18 15:03:51,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:51,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:51,657 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:51,659 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:51,664 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 117 transitions. [2020-04-18 15:03:51,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:51,679 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:03:51,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:51,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:03:51,680 INFO L87 Difference]: Start difference. First operand 218 states and 564 transitions. Second operand 5 states. [2020-04-18 15:03:51,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:51,724 INFO L93 Difference]: Finished difference Result 276 states and 679 transitions. [2020-04-18 15:03:51,724 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 679 transitions. [2020-04-18 15:03:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:03:51,725 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:03:51,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:51,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1320587990, now seen corresponding path program 4 times [2020-04-18 15:03:51,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:51,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359738923] [2020-04-18 15:03:51,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:51,764 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 15:03:51,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359738923] [2020-04-18 15:03:51,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:51,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:51,765 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:51,766 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:51,772 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 121 transitions. [2020-04-18 15:03:51,772 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:51,804 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:03:51,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:51,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:03:51,805 INFO L87 Difference]: Start difference. First operand 276 states and 679 transitions. Second operand 5 states. [2020-04-18 15:03:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:51,862 INFO L93 Difference]: Finished difference Result 388 states and 937 transitions. [2020-04-18 15:03:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 937 transitions. [2020-04-18 15:03:51,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:03:51,864 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:03:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:51,864 INFO L82 PathProgramCache]: Analyzing trace with hash -2022396938, now seen corresponding path program 5 times [2020-04-18 15:03:51,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:51,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855177439] [2020-04-18 15:03:51,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:51,902 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 15:03:51,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855177439] [2020-04-18 15:03:51,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:51,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:03:51,904 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:51,905 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:51,909 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 66 transitions. [2020-04-18 15:03:51,910 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:51,937 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:03:51,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:51,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:03:51,940 INFO L87 Difference]: Start difference. First operand 388 states and 937 transitions. Second operand 4 states. [2020-04-18 15:03:51,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:51,967 INFO L93 Difference]: Finished difference Result 515 states and 1164 transitions. [2020-04-18 15:03:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1164 transitions. [2020-04-18 15:03:51,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:03:51,969 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:03:51,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:51,970 INFO L82 PathProgramCache]: Analyzing trace with hash 603240008, now seen corresponding path program 6 times [2020-04-18 15:03:51,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:51,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894007810] [2020-04-18 15:03:51,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:52,045 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 15:03:52,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894007810] [2020-04-18 15:03:52,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:52,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:52,046 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:52,051 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:52,057 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 78 transitions. [2020-04-18 15:03:52,058 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:52,190 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:03:52,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:03:52,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:03:52,191 INFO L87 Difference]: Start difference. First operand 515 states and 1164 transitions. Second operand 7 states. [2020-04-18 15:03:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:52,285 INFO L93 Difference]: Finished difference Result 535 states and 1184 transitions. [2020-04-18 15:03:52,286 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1184 transitions. [2020-04-18 15:03:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:03:52,288 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:03:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:52,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 7 times [2020-04-18 15:03:52,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:52,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830415270] [2020-04-18 15:03:52,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:52,354 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 15:03:52,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830415270] [2020-04-18 15:03:52,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:52,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:03:52,356 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:52,358 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:52,367 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 74 transitions. [2020-04-18 15:03:52,367 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:52,598 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 15:03:52,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:03:52,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:03:52,599 INFO L87 Difference]: Start difference. First operand 535 states and 1184 transitions. Second operand 9 states. [2020-04-18 15:03:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:52,677 INFO L93 Difference]: Finished difference Result 535 states and 1184 transitions. [2020-04-18 15:03:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1184 transitions. [2020-04-18 15:03:52,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:03:52,680 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [296546652] [2020-04-18 15:03:52,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:03:52,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:03:52,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [296546652] [2020-04-18 15:03:52,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 15:03:52,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:03:52,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 15:03:52,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-04-18 15:03:52,682 INFO L87 Difference]: Start difference. First operand 68 states and 125 transitions. Second operand 15 states. [2020-04-18 15:03:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:52,934 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2020-04-18 15:03:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:03:52,935 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-04-18 15:03:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:03:52,935 INFO L225 Difference]: With dead ends: 61 [2020-04-18 15:03:52,936 INFO L226 Difference]: Without dead ends: 55 [2020-04-18 15:03:52,936 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 15:03:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-04-18 15:03:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-04-18 15:03:52,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-04-18 15:03:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-04-18 15:03:52,938 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-04-18 15:03:52,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:03:52,939 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-04-18 15:03:52,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 15:03:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-04-18 15:03:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:03:52,939 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:03:52,940 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:03:52,940 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:03:52,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:52,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 1 times [2020-04-18 15:03:52,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:03:52,940 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [95711185] [2020-04-18 15:03:52,941 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:52,945 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 864 transitions. [2020-04-18 15:03:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:03:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:03:52,949 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:03:52,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:52,950 INFO L82 PathProgramCache]: Analyzing trace with hash -392200012, now seen corresponding path program 2 times [2020-04-18 15:03:52,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:52,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586572636] [2020-04-18 15:03:52,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:52,992 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 15:03:52,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586572636] [2020-04-18 15:03:52,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:52,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:52,993 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:52,994 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:53,001 INFO L259 McrAutomatonBuilder]: Finished intersection with 77 states and 144 transitions. [2020-04-18 15:03:53,001 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:53,016 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:03:53,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:53,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:03:53,017 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 5 states. [2020-04-18 15:03:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:53,062 INFO L93 Difference]: Finished difference Result 418 states and 1190 transitions. [2020-04-18 15:03:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1190 transitions. [2020-04-18 15:03:53,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:03:53,065 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:03:53,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:53,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1431673586, now seen corresponding path program 3 times [2020-04-18 15:03:53,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:53,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133685543] [2020-04-18 15:03:53,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:53,102 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 15:03:53,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133685543] [2020-04-18 15:03:53,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:53,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:53,103 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:53,104 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:53,111 INFO L259 McrAutomatonBuilder]: Finished intersection with 77 states and 151 transitions. [2020-04-18 15:03:53,112 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:53,128 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:03:53,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:03:53,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:03:53,129 INFO L87 Difference]: Start difference. First operand 418 states and 1190 transitions. Second operand 5 states. [2020-04-18 15:03:53,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:53,183 INFO L93 Difference]: Finished difference Result 622 states and 1722 transitions. [2020-04-18 15:03:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1722 transitions. [2020-04-18 15:03:53,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:03:53,186 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:03:53,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:53,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2049700222, now seen corresponding path program 4 times [2020-04-18 15:03:53,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:53,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585992876] [2020-04-18 15:03:53,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:53,225 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 15:03:53,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585992876] [2020-04-18 15:03:53,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:53,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:53,226 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:53,227 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:53,232 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 74 transitions. [2020-04-18 15:03:53,232 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:53,249 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:03:53,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:53,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:03:53,250 INFO L87 Difference]: Start difference. First operand 622 states and 1722 transitions. Second operand 4 states. [2020-04-18 15:03:53,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:53,276 INFO L93 Difference]: Finished difference Result 1034 states and 2756 transitions. [2020-04-18 15:03:53,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 2756 transitions. [2020-04-18 15:03:53,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:03:53,280 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:03:53,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:53,280 INFO L82 PathProgramCache]: Analyzing trace with hash 2095280452, now seen corresponding path program 5 times [2020-04-18 15:03:53,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:53,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085793177] [2020-04-18 15:03:53,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:53,315 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 15:03:53,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085793177] [2020-04-18 15:03:53,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:53,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:03:53,316 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:53,317 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:53,322 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 73 transitions. [2020-04-18 15:03:53,322 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:53,349 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:03:53,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:03:53,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:03:53,350 INFO L87 Difference]: Start difference. First operand 1034 states and 2756 transitions. Second operand 4 states. [2020-04-18 15:03:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:53,393 INFO L93 Difference]: Finished difference Result 1569 states and 3927 transitions. [2020-04-18 15:03:53,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 3927 transitions. [2020-04-18 15:03:53,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:03:53,397 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:03:53,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:53,398 INFO L82 PathProgramCache]: Analyzing trace with hash -108384490, now seen corresponding path program 6 times [2020-04-18 15:03:53,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:53,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332427770] [2020-04-18 15:03:53,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:53,428 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 15:03:53,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332427770] [2020-04-18 15:03:53,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:53,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:03:53,429 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:53,430 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:53,435 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 80 transitions. [2020-04-18 15:03:53,435 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:53,530 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:03:53,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:03:53,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:03:53,530 INFO L87 Difference]: Start difference. First operand 1569 states and 3927 transitions. Second operand 7 states. [2020-04-18 15:03:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:53,686 INFO L93 Difference]: Finished difference Result 1741 states and 4182 transitions. [2020-04-18 15:03:53,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 4182 transitions. [2020-04-18 15:03:53,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:03:53,690 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:03:53,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:03:53,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1937362338, now seen corresponding path program 7 times [2020-04-18 15:03:53,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:03:53,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783167978] [2020-04-18 15:03:53,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:03:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:03:53,722 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 15:03:53,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783167978] [2020-04-18 15:03:53,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:03:53,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:03:53,723 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:03:53,724 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:03:53,728 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 80 transitions. [2020-04-18 15:03:53,728 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:03:53,836 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 15:03:53,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:03:53,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:03:53,837 INFO L87 Difference]: Start difference. First operand 1741 states and 4182 transitions. Second operand 9 states. [2020-04-18 15:03:54,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:54,007 INFO L93 Difference]: Finished difference Result 1762 states and 4196 transitions. [2020-04-18 15:03:54,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 4196 transitions. [2020-04-18 15:03:54,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:03:54,011 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [95711185] [2020-04-18 15:03:54,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:03:54,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:03:54,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [95711185] [2020-04-18 15:03:54,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 15:03:54,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:03:54,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 15:03:54,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-04-18 15:03:54,013 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 15 states. [2020-04-18 15:03:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:03:54,247 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-04-18 15:03:54,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 15:03:54,248 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-04-18 15:03:54,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:03:54,248 INFO L225 Difference]: With dead ends: 54 [2020-04-18 15:03:54,248 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:03:54,249 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=1032, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 15:03:54,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:03:54,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:03:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:03:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:03:54,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 15:03:54,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:03:54,250 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:03:54,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 15:03:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:03:54,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:03:54,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:03:54 BasicIcfg [2020-04-18 15:03:54,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:03:54,255 INFO L168 Benchmark]: Toolchain (without parser) took 9532.52 ms. Allocated memory was 145.2 MB in the beginning and 309.3 MB in the end (delta: 164.1 MB). Free memory was 101.7 MB in the beginning and 186.9 MB in the end (delta: -85.3 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:03:54,256 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 15:03:54,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.28 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 99.8 MB in the beginning and 158.8 MB in the end (delta: -59.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:03:54,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.40 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:03:54,257 INFO L168 Benchmark]: Boogie Preprocessor took 32.17 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:03:54,258 INFO L168 Benchmark]: RCFGBuilder took 499.64 ms. Allocated memory is still 202.4 MB. Free memory was 155.5 MB in the beginning and 133.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:03:54,258 INFO L168 Benchmark]: TraceAbstraction took 8109.09 ms. Allocated memory was 202.4 MB in the beginning and 309.3 MB in the end (delta: 107.0 MB). Free memory was 132.8 MB in the beginning and 186.9 MB in the end (delta: -54.1 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:03:54,261 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 820.28 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 99.8 MB in the beginning and 158.8 MB in the end (delta: -59.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.40 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.17 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.64 ms. Allocated memory is still 202.4 MB. Free memory was 155.5 MB in the beginning and 133.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8109.09 ms. Allocated memory was 202.4 MB in the beginning and 309.3 MB in the end (delta: 107.0 MB). Free memory was 132.8 MB in the beginning and 186.9 MB in the end (delta: -54.1 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 637 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 206 SDtfs, 454 SDslu, 600 SDs, 0 SdLazy, 439 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 408 SyntacticMatches, 4 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 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...