/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:14:19,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:14:19,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:14:19,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:14:19,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:14:19,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:14:19,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:14:19,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:14:19,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:14:19,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:14:19,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:14:19,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:14:19,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:14:19,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:14:19,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:14:19,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:14:19,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:14:19,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:14:19,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:14:19,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:14:19,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:14:19,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:14:19,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:14:19,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:14:19,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:14:19,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:14:19,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:14:19,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:14:19,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:14:19,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:14:19,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:14:19,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:14:19,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:14:19,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:14:19,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:14:19,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:14:19,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:14:19,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:14:19,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:14:19,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:14:19,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:14:19,388 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-NoLbe-McrStrategy.epf [2020-04-18 19:14:19,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:14:19,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:14:19,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:14:19,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:14:19,418 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:14:19,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:14:19,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:14:19,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:14:19,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:14:19,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:14:19,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:14:19,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:14:19,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:14:19,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:14:19,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:14:19,421 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:14:19,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:14:19,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:14:19,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:14:19,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:14:19,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:14:19,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:14:19,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:14:19,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:14:19,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:14:19,423 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:14:19,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:14:19,423 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:14:19,423 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:14:19,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:14:19,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:14:19,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:14:19,781 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:14:19,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:14:19,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:14:19,786 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:14:19,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-04-18 19:14:19,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b60623e1/96024919f9cd4671b82cd69d886604b2/FLAG1b2ff2058 [2020-04-18 19:14:20,425 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:14:20,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-04-18 19:14:20,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b60623e1/96024919f9cd4671b82cd69d886604b2/FLAG1b2ff2058 [2020-04-18 19:14:20,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b60623e1/96024919f9cd4671b82cd69d886604b2 [2020-04-18 19:14:20,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:14:20,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:14:20,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:14:20,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:14:20,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:14:20,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:14:20" (1/1) ... [2020-04-18 19:14:20,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bba74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:20, skipping insertion in model container [2020-04-18 19:14:20,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:14:20" (1/1) ... [2020-04-18 19:14:20,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:14:20,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:14:21,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:14:21,311 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:14:21,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:14:21,442 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:14:21,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21 WrapperNode [2020-04-18 19:14:21,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:14:21,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:14:21,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:14:21,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:14:21,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21" (1/1) ... [2020-04-18 19:14:21,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21" (1/1) ... [2020-04-18 19:14:21,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:14:21,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:14:21,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:14:21,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:14:21,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21" (1/1) ... [2020-04-18 19:14:21,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21" (1/1) ... [2020-04-18 19:14:21,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21" (1/1) ... [2020-04-18 19:14:21,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21" (1/1) ... [2020-04-18 19:14:21,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21" (1/1) ... [2020-04-18 19:14:21,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21" (1/1) ... [2020-04-18 19:14:21,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21" (1/1) ... [2020-04-18 19:14:21,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:14:21,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:14:21,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:14:21,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:14:21,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21" (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 19:14:21,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:14:21,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:14:21,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:14:21,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:14:21,579 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:14:21,580 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:14:21,580 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:14:21,580 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:14:21,580 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:14:21,580 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:14:21,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:14:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:14:21,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:14:21,583 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 19:14:21,997 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:14:21,998 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:14:22,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:14:22 BoogieIcfgContainer [2020-04-18 19:14:22,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:14:22,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:14:22,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:14:22,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:14:22,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:14:20" (1/3) ... [2020-04-18 19:14:22,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcb30fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:14:22, skipping insertion in model container [2020-04-18 19:14:22,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:21" (2/3) ... [2020-04-18 19:14:22,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcb30fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:14:22, skipping insertion in model container [2020-04-18 19:14:22,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:14:22" (3/3) ... [2020-04-18 19:14:22,011 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-04-18 19:14:22,019 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:14:22,019 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:14:22,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:14:22,027 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:14:22,060 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,061 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,061 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,062 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,062 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,063 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,064 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,065 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,065 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,065 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,066 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,066 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,067 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,067 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,067 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,068 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,069 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,069 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,076 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,076 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,077 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,077 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,092 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,093 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,093 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,093 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,104 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,104 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,105 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,105 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:14:22,123 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:14:22,144 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:14:22,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:14:22,145 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:14:22,145 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:14:22,145 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:14:22,145 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:14:22,145 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:14:22,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:14:22,159 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:14:22,750 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:14:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:14:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:14:22,788 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:14:22,789 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:14:22,790 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:14:22,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:22,796 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-04-18 19:14:22,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:14:22,804 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1697564049] [2020-04-18 19:14:22,820 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:22,834 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:14:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:14:22,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:14:22,838 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:14:22,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:22,839 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 2 times [2020-04-18 19:14:22,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:22,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923614181] [2020-04-18 19:14:22,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:23,321 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 19:14:23,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923614181] [2020-04-18 19:14:23,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:23,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:14:23,325 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:23,329 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:23,342 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:14:23,343 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:23,407 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:14:23,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:14:23,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:14:23,416 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 19:14:23,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:23,560 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:14:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:14:23,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:14:23,562 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1697564049] [2020-04-18 19:14:23,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:14:23,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:14:23,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1697564049] [2020-04-18 19:14:23,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:14:23,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:14:23,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:14:23,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:14:23,572 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 19:14:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:24,097 INFO L93 Difference]: Finished difference Result 19788 states and 68292 transitions. [2020-04-18 19:14:24,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:14:24,100 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:14:24,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:14:24,188 INFO L225 Difference]: With dead ends: 19788 [2020-04-18 19:14:24,189 INFO L226 Difference]: Without dead ends: 6510 [2020-04-18 19:14:24,192 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:14:24,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6510 states. [2020-04-18 19:14:24,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 5388. [2020-04-18 19:14:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5388 states. [2020-04-18 19:14:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 18245 transitions. [2020-04-18 19:14:24,641 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 18245 transitions. Word has length 36 [2020-04-18 19:14:24,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:14:24,644 INFO L479 AbstractCegarLoop]: Abstraction has 5388 states and 18245 transitions. [2020-04-18 19:14:24,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:14:24,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 18245 transitions. [2020-04-18 19:14:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:14:24,663 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:14:24,671 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:14:24,672 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:14:24,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:24,672 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 1 times [2020-04-18 19:14:24,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:14:24,673 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [118570949] [2020-04-18 19:14:24,674 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:24,679 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 19:14:24,683 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 19:14:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:14:24,686 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:14:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:24,686 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 2 times [2020-04-18 19:14:24,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:24,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774643369] [2020-04-18 19:14:24,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:24,954 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 19:14:24,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774643369] [2020-04-18 19:14:24,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:24,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:24,955 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:24,959 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:24,973 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 19:14:24,973 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:25,021 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:14:25,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:25,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:14:25,022 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 7 states. [2020-04-18 19:14:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:25,116 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 19:14:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 19:14:25,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:14:25,118 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [118570949] [2020-04-18 19:14:25,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:14:25,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:14:25,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [118570949] [2020-04-18 19:14:25,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:14:25,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:14:25,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:25,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:14:25,120 INFO L87 Difference]: Start difference. First operand 5388 states and 18245 transitions. Second operand 7 states. [2020-04-18 19:14:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:25,508 INFO L93 Difference]: Finished difference Result 7402 states and 24613 transitions. [2020-04-18 19:14:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:14:25,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 19:14:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:14:25,658 INFO L225 Difference]: With dead ends: 7402 [2020-04-18 19:14:25,659 INFO L226 Difference]: Without dead ends: 5910 [2020-04-18 19:14:25,674 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:14:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5910 states. [2020-04-18 19:14:25,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 5013. [2020-04-18 19:14:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-04-18 19:14:25,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 16835 transitions. [2020-04-18 19:14:25,893 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 16835 transitions. Word has length 38 [2020-04-18 19:14:25,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:14:25,893 INFO L479 AbstractCegarLoop]: Abstraction has 5013 states and 16835 transitions. [2020-04-18 19:14:25,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:14:25,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 16835 transitions. [2020-04-18 19:14:25,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:14:25,907 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:14:25,908 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:14:25,908 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:14:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:25,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1958490107, now seen corresponding path program 1 times [2020-04-18 19:14:25,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:14:25,909 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2015449842] [2020-04-18 19:14:25,910 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:25,914 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 111 transitions. [2020-04-18 19:14:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-04-18 19:14:25,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:14:25,915 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:14:25,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:25,916 INFO L82 PathProgramCache]: Analyzing trace with hash -546181317, now seen corresponding path program 2 times [2020-04-18 19:14:25,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:25,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426051640] [2020-04-18 19:14:25,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:26,130 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 19:14:26,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426051640] [2020-04-18 19:14:26,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:26,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:26,132 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:26,136 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:26,151 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 83 transitions. [2020-04-18 19:14:26,151 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:26,215 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:14:26,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:26,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:14:26,216 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 7 states. [2020-04-18 19:14:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:26,495 INFO L93 Difference]: Finished difference Result 82 states and 116 transitions. [2020-04-18 19:14:26,495 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 116 transitions. [2020-04-18 19:14:26,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:14:26,496 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:14:26,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:26,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1958490107, now seen corresponding path program 3 times [2020-04-18 19:14:26,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:26,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027981595] [2020-04-18 19:14:26,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:26,659 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 19:14:26,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027981595] [2020-04-18 19:14:26,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:26,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:26,661 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:26,666 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:26,673 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 75 transitions. [2020-04-18 19:14:26,673 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:26,808 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:14:26,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:14:26,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:14:26,811 INFO L87 Difference]: Start difference. First operand 82 states and 116 transitions. Second operand 11 states. [2020-04-18 19:14:27,372 WARN L192 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-04-18 19:14:27,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:27,373 INFO L93 Difference]: Finished difference Result 82 states and 116 transitions. [2020-04-18 19:14:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 116 transitions. [2020-04-18 19:14:27,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:14:27,374 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2015449842] [2020-04-18 19:14:27,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:14:27,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:14:27,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2015449842] [2020-04-18 19:14:27,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:14:27,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:14:27,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:14:27,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:14:27,378 INFO L87 Difference]: Start difference. First operand 5013 states and 16835 transitions. Second operand 12 states. [2020-04-18 19:14:27,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:27,703 INFO L93 Difference]: Finished difference Result 6430 states and 21251 transitions. [2020-04-18 19:14:27,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 19:14:27,703 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-04-18 19:14:27,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:14:27,739 INFO L225 Difference]: With dead ends: 6430 [2020-04-18 19:14:27,739 INFO L226 Difference]: Without dead ends: 5022 [2020-04-18 19:14:27,740 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:14:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5022 states. [2020-04-18 19:14:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5022 to 3853. [2020-04-18 19:14:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3853 states. [2020-04-18 19:14:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 12861 transitions. [2020-04-18 19:14:27,911 INFO L78 Accepts]: Start accepts. Automaton has 3853 states and 12861 transitions. Word has length 39 [2020-04-18 19:14:27,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:14:27,912 INFO L479 AbstractCegarLoop]: Abstraction has 3853 states and 12861 transitions. [2020-04-18 19:14:27,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:14:27,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3853 states and 12861 transitions. [2020-04-18 19:14:27,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:14:27,922 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:14:27,922 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:14:27,922 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:14:27,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:27,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1766768090, now seen corresponding path program 1 times [2020-04-18 19:14:27,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:14:27,923 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [300312837] [2020-04-18 19:14:27,925 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:27,933 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 421 transitions. [2020-04-18 19:14:27,935 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-04-18 19:14:27,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:14:27,936 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:14:27,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:27,937 INFO L82 PathProgramCache]: Analyzing trace with hash -737903334, now seen corresponding path program 2 times [2020-04-18 19:14:27,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:27,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875808389] [2020-04-18 19:14:27,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:28,106 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 19:14:28,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875808389] [2020-04-18 19:14:28,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:28,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:28,108 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:28,112 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:28,125 INFO L259 McrAutomatonBuilder]: Finished intersection with 106 states and 181 transitions. [2020-04-18 19:14:28,125 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:28,178 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:14:28,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:28,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:14:28,180 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 7 states. [2020-04-18 19:14:28,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:28,320 INFO L93 Difference]: Finished difference Result 214 states and 448 transitions. [2020-04-18 19:14:28,321 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 448 transitions. [2020-04-18 19:14:28,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:14:28,321 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:14:28,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:28,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1766768090, now seen corresponding path program 3 times [2020-04-18 19:14:28,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:28,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924702844] [2020-04-18 19:14:28,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:28,455 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 19:14:28,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924702844] [2020-04-18 19:14:28,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:28,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:14:28,456 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:28,488 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:28,502 INFO L259 McrAutomatonBuilder]: Finished intersection with 116 states and 213 transitions. [2020-04-18 19:14:28,502 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:28,712 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:14:28,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:14:28,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:14:28,713 INFO L87 Difference]: Start difference. First operand 214 states and 448 transitions. Second operand 16 states. [2020-04-18 19:14:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:28,925 INFO L93 Difference]: Finished difference Result 214 states and 448 transitions. [2020-04-18 19:14:28,925 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 448 transitions. [2020-04-18 19:14:28,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:14:28,926 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [300312837] [2020-04-18 19:14:28,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:14:28,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:14:28,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [300312837] [2020-04-18 19:14:28,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 19:14:28,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:14:28,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:14:28,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:14:28,928 INFO L87 Difference]: Start difference. First operand 3853 states and 12861 transitions. Second operand 16 states. [2020-04-18 19:14:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:29,090 INFO L93 Difference]: Finished difference Result 5253 states and 17451 transitions. [2020-04-18 19:14:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:14:29,091 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-04-18 19:14:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:14:29,103 INFO L225 Difference]: With dead ends: 5253 [2020-04-18 19:14:29,103 INFO L226 Difference]: Without dead ends: 2646 [2020-04-18 19:14:29,104 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:14:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2020-04-18 19:14:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2646. [2020-04-18 19:14:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2020-04-18 19:14:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 8589 transitions. [2020-04-18 19:14:29,191 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 8589 transitions. Word has length 41 [2020-04-18 19:14:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:14:29,192 INFO L479 AbstractCegarLoop]: Abstraction has 2646 states and 8589 transitions. [2020-04-18 19:14:29,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 19:14:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 8589 transitions. [2020-04-18 19:14:29,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:14:29,200 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:14:29,200 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:14:29,200 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:14:29,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:29,201 INFO L82 PathProgramCache]: Analyzing trace with hash 372366423, now seen corresponding path program 1 times [2020-04-18 19:14:29,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:14:29,201 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1481243001] [2020-04-18 19:14:29,203 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:29,216 INFO L259 McrAutomatonBuilder]: Finished intersection with 544 states and 1559 transitions. [2020-04-18 19:14:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states. [2020-04-18 19:14:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:14:29,222 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:14:29,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:29,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1838482487, now seen corresponding path program 2 times [2020-04-18 19:14:29,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:29,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716506231] [2020-04-18 19:14:29,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:29,315 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 19:14:29,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716506231] [2020-04-18 19:14:29,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:29,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:14:29,316 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:29,321 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:29,364 INFO L259 McrAutomatonBuilder]: Finished intersection with 226 states and 529 transitions. [2020-04-18 19:14:29,365 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:29,484 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 19:14:29,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:29,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:14:29,486 INFO L87 Difference]: Start difference. First operand 544 states. Second operand 7 states. [2020-04-18 19:14:29,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:29,696 INFO L93 Difference]: Finished difference Result 722 states and 1906 transitions. [2020-04-18 19:14:29,696 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1906 transitions. [2020-04-18 19:14:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:14:29,698 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:14:29,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:29,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1138361659, now seen corresponding path program 3 times [2020-04-18 19:14:29,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:29,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696632955] [2020-04-18 19:14:29,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:29,881 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 19:14:29,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696632955] [2020-04-18 19:14:29,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:29,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:29,882 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:29,885 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:29,920 INFO L259 McrAutomatonBuilder]: Finished intersection with 244 states and 576 transitions. [2020-04-18 19:14:29,921 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:29,950 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:14:29,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:29,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:14:29,951 INFO L87 Difference]: Start difference. First operand 722 states and 1906 transitions. Second operand 7 states. [2020-04-18 19:14:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:30,119 INFO L93 Difference]: Finished difference Result 728 states and 1911 transitions. [2020-04-18 19:14:30,120 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1911 transitions. [2020-04-18 19:14:30,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:14:30,122 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:14:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:30,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1586902905, now seen corresponding path program 4 times [2020-04-18 19:14:30,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:30,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448969173] [2020-04-18 19:14:30,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:30,273 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 19:14:30,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448969173] [2020-04-18 19:14:30,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:30,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:30,275 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:30,281 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:30,318 INFO L259 McrAutomatonBuilder]: Finished intersection with 204 states and 462 transitions. [2020-04-18 19:14:30,318 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:30,419 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:14:30,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:14:30,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:14:30,420 INFO L87 Difference]: Start difference. First operand 728 states and 1911 transitions. Second operand 9 states. [2020-04-18 19:14:30,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:30,677 INFO L93 Difference]: Finished difference Result 728 states and 1911 transitions. [2020-04-18 19:14:30,677 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1911 transitions. [2020-04-18 19:14:30,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:14:30,680 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1481243001] [2020-04-18 19:14:30,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:14:30,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:14:30,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1481243001] [2020-04-18 19:14:30,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 19:14:30,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:14:30,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:14:30,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:14:30,682 INFO L87 Difference]: Start difference. First operand 2646 states and 8589 transitions. Second operand 10 states. [2020-04-18 19:14:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:30,785 INFO L93 Difference]: Finished difference Result 2926 states and 9423 transitions. [2020-04-18 19:14:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 19:14:30,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-04-18 19:14:30,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:14:30,797 INFO L225 Difference]: With dead ends: 2926 [2020-04-18 19:14:30,797 INFO L226 Difference]: Without dead ends: 2526 [2020-04-18 19:14:30,797 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:14:30,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2020-04-18 19:14:30,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2386. [2020-04-18 19:14:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2386 states. [2020-04-18 19:14:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 7686 transitions. [2020-04-18 19:14:30,881 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 7686 transitions. Word has length 43 [2020-04-18 19:14:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:14:30,881 INFO L479 AbstractCegarLoop]: Abstraction has 2386 states and 7686 transitions. [2020-04-18 19:14:30,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 19:14:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 7686 transitions. [2020-04-18 19:14:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:14:30,891 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:14:30,891 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:14:30,891 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:14:30,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:30,891 INFO L82 PathProgramCache]: Analyzing trace with hash 419674973, now seen corresponding path program 1 times [2020-04-18 19:14:30,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:14:30,892 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [670411996] [2020-04-18 19:14:30,893 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:30,907 INFO L259 McrAutomatonBuilder]: Finished intersection with 700 states and 2080 transitions. [2020-04-18 19:14:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states. [2020-04-18 19:14:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:14:30,916 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:14:30,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:30,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1219733507, now seen corresponding path program 2 times [2020-04-18 19:14:30,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:30,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764245264] [2020-04-18 19:14:30,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:31,032 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 19:14:31,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764245264] [2020-04-18 19:14:31,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:31,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:14:31,034 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:31,038 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:31,118 INFO L259 McrAutomatonBuilder]: Finished intersection with 232 states and 540 transitions. [2020-04-18 19:14:31,118 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:31,189 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:14:31,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:31,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:14:31,190 INFO L87 Difference]: Start difference. First operand 700 states. Second operand 7 states. [2020-04-18 19:14:31,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:31,407 INFO L93 Difference]: Finished difference Result 1001 states and 2763 transitions. [2020-04-18 19:14:31,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 2763 transitions. [2020-04-18 19:14:31,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:14:31,410 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:14:31,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:31,411 INFO L82 PathProgramCache]: Analyzing trace with hash -651472579, now seen corresponding path program 3 times [2020-04-18 19:14:31,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:31,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348039129] [2020-04-18 19:14:31,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:31,510 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 19:14:31,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348039129] [2020-04-18 19:14:31,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:31,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:31,511 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:31,515 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:31,547 INFO L259 McrAutomatonBuilder]: Finished intersection with 228 states and 532 transitions. [2020-04-18 19:14:31,548 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:31,571 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:14:31,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:31,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:14:31,572 INFO L87 Difference]: Start difference. First operand 1001 states and 2763 transitions. Second operand 7 states. [2020-04-18 19:14:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:31,774 INFO L93 Difference]: Finished difference Result 1139 states and 2979 transitions. [2020-04-18 19:14:31,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2979 transitions. [2020-04-18 19:14:31,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:14:31,781 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:14:31,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:31,782 INFO L82 PathProgramCache]: Analyzing trace with hash -32498259, now seen corresponding path program 4 times [2020-04-18 19:14:31,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:31,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945288157] [2020-04-18 19:14:31,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:31,890 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 19:14:31,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945288157] [2020-04-18 19:14:31,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:31,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:31,891 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:31,895 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:31,933 INFO L259 McrAutomatonBuilder]: Finished intersection with 210 states and 473 transitions. [2020-04-18 19:14:31,933 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:32,015 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:14:32,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:14:32,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:14:32,017 INFO L87 Difference]: Start difference. First operand 1139 states and 2979 transitions. Second operand 9 states. [2020-04-18 19:14:32,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:32,332 INFO L93 Difference]: Finished difference Result 1166 states and 3004 transitions. [2020-04-18 19:14:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 3004 transitions. [2020-04-18 19:14:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:14:32,336 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:14:32,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:32,336 INFO L82 PathProgramCache]: Analyzing trace with hash 535762669, now seen corresponding path program 5 times [2020-04-18 19:14:32,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:32,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665500285] [2020-04-18 19:14:32,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:32,439 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 19:14:32,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665500285] [2020-04-18 19:14:32,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:32,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:32,441 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:32,445 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:32,481 INFO L259 McrAutomatonBuilder]: Finished intersection with 220 states and 505 transitions. [2020-04-18 19:14:32,481 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:32,577 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:14:32,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:14:32,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2020-04-18 19:14:32,578 INFO L87 Difference]: Start difference. First operand 1166 states and 3004 transitions. Second operand 9 states. [2020-04-18 19:14:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:32,903 INFO L93 Difference]: Finished difference Result 1311 states and 3264 transitions. [2020-04-18 19:14:32,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 3264 transitions. [2020-04-18 19:14:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:14:32,908 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:14:32,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:32,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1881072769, now seen corresponding path program 6 times [2020-04-18 19:14:32,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:32,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679803045] [2020-04-18 19:14:32,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:33,038 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 19:14:33,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679803045] [2020-04-18 19:14:33,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:33,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:14:33,039 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:33,043 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:33,078 INFO L259 McrAutomatonBuilder]: Finished intersection with 209 states and 477 transitions. [2020-04-18 19:14:33,078 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:33,199 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:14:33,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:14:33,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1183, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:14:33,200 INFO L87 Difference]: Start difference. First operand 1311 states and 3264 transitions. Second operand 6 states. [2020-04-18 19:14:33,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:33,259 INFO L93 Difference]: Finished difference Result 1311 states and 3264 transitions. [2020-04-18 19:14:33,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 3264 transitions. [2020-04-18 19:14:33,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:14:33,262 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [670411996] [2020-04-18 19:14:33,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:14:33,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:14:33,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [670411996] [2020-04-18 19:14:33,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 19:14:33,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:14:33,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:14:33,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1405, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:14:33,264 INFO L87 Difference]: Start difference. First operand 2386 states and 7686 transitions. Second operand 17 states. [2020-04-18 19:14:34,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:34,644 INFO L93 Difference]: Finished difference Result 6200 states and 19753 transitions. [2020-04-18 19:14:34,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-04-18 19:14:34,645 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-04-18 19:14:34,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:14:34,657 INFO L225 Difference]: With dead ends: 6200 [2020-04-18 19:14:34,657 INFO L226 Difference]: Without dead ends: 1474 [2020-04-18 19:14:34,659 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=811, Invalid=4889, Unknown=0, NotChecked=0, Total=5700 [2020-04-18 19:14:34,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2020-04-18 19:14:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2020-04-18 19:14:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-04-18 19:14:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 4613 transitions. [2020-04-18 19:14:34,702 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 4613 transitions. Word has length 44 [2020-04-18 19:14:34,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:14:34,702 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 4613 transitions. [2020-04-18 19:14:34,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 19:14:34,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 4613 transitions. [2020-04-18 19:14:34,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:14:34,705 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:14:34,706 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:14:34,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:14:34,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:34,707 INFO L82 PathProgramCache]: Analyzing trace with hash -211044402, now seen corresponding path program 1 times [2020-04-18 19:14:34,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:14:34,707 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1981549783] [2020-04-18 19:14:34,709 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:34,727 INFO L259 McrAutomatonBuilder]: Finished intersection with 868 states and 2633 transitions. [2020-04-18 19:14:34,734 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states. [2020-04-18 19:14:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:14:34,737 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:14:34,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:34,737 INFO L82 PathProgramCache]: Analyzing trace with hash -572118500, now seen corresponding path program 2 times [2020-04-18 19:14:34,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:34,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697777385] [2020-04-18 19:14:34,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:34,861 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 19:14:34,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697777385] [2020-04-18 19:14:34,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:34,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:14:34,862 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:34,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:34,881 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 291 transitions. [2020-04-18 19:14:34,881 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:34,936 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:14:34,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:34,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:14:34,936 INFO L87 Difference]: Start difference. First operand 868 states. Second operand 7 states. [2020-04-18 19:14:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:35,163 INFO L93 Difference]: Finished difference Result 1311 states and 3703 transitions. [2020-04-18 19:14:35,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 3703 transitions. [2020-04-18 19:14:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:14:35,166 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:14:35,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:35,166 INFO L82 PathProgramCache]: Analyzing trace with hash -3857572, now seen corresponding path program 3 times [2020-04-18 19:14:35,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:35,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482534847] [2020-04-18 19:14:35,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:35,252 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 19:14:35,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482534847] [2020-04-18 19:14:35,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:35,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:35,253 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:35,257 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:35,277 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 293 transitions. [2020-04-18 19:14:35,277 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:35,300 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:14:35,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:35,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:14:35,301 INFO L87 Difference]: Start difference. First operand 1311 states and 3703 transitions. Second operand 7 states. [2020-04-18 19:14:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:35,512 INFO L93 Difference]: Finished difference Result 1524 states and 4087 transitions. [2020-04-18 19:14:35,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4087 transitions. [2020-04-18 19:14:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:14:35,516 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:14:35,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:35,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1872435820, now seen corresponding path program 4 times [2020-04-18 19:14:35,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:35,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106470854] [2020-04-18 19:14:35,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:35,618 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 19:14:35,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106470854] [2020-04-18 19:14:35,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:35,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:35,619 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:35,622 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:35,651 INFO L259 McrAutomatonBuilder]: Finished intersection with 174 states and 357 transitions. [2020-04-18 19:14:35,652 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:35,727 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:14:35,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:14:35,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:14:35,728 INFO L87 Difference]: Start difference. First operand 1524 states and 4087 transitions. Second operand 9 states. [2020-04-18 19:14:36,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:36,002 INFO L93 Difference]: Finished difference Result 1578 states and 4164 transitions. [2020-04-18 19:14:36,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 4164 transitions. [2020-04-18 19:14:36,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:14:36,006 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:14:36,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:36,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1854270548, now seen corresponding path program 5 times [2020-04-18 19:14:36,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:36,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251919596] [2020-04-18 19:14:36,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:36,082 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 19:14:36,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251919596] [2020-04-18 19:14:36,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:36,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:36,084 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:36,088 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:36,119 INFO L259 McrAutomatonBuilder]: Finished intersection with 192 states and 413 transitions. [2020-04-18 19:14:36,119 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:36,194 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:14:36,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:14:36,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2020-04-18 19:14:36,195 INFO L87 Difference]: Start difference. First operand 1578 states and 4164 transitions. Second operand 9 states. [2020-04-18 19:14:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:36,466 INFO L93 Difference]: Finished difference Result 1868 states and 4829 transitions. [2020-04-18 19:14:36,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 4829 transitions. [2020-04-18 19:14:36,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:14:36,470 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:14:36,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:36,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1059042606, now seen corresponding path program 6 times [2020-04-18 19:14:36,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:36,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136401636] [2020-04-18 19:14:36,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:36,562 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 19:14:36,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136401636] [2020-04-18 19:14:36,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:36,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:36,564 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:36,569 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:36,604 INFO L259 McrAutomatonBuilder]: Finished intersection with 175 states and 366 transitions. [2020-04-18 19:14:36,604 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:36,771 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:14:36,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:14:36,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1334, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:14:36,773 INFO L87 Difference]: Start difference. First operand 1868 states and 4829 transitions. Second operand 8 states. [2020-04-18 19:14:36,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:36,928 INFO L93 Difference]: Finished difference Result 1868 states and 4829 transitions. [2020-04-18 19:14:36,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 4829 transitions. [2020-04-18 19:14:36,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:14:36,932 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1981549783] [2020-04-18 19:14:36,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:14:36,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:14:36,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1981549783] [2020-04-18 19:14:36,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 19:14:36,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:14:36,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:14:36,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 19:14:36,935 INFO L87 Difference]: Start difference. First operand 1474 states and 4613 transitions. Second operand 19 states. [2020-04-18 19:14:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:37,483 INFO L93 Difference]: Finished difference Result 1663 states and 5090 transitions. [2020-04-18 19:14:37,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 19:14:37,483 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-04-18 19:14:37,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:14:37,488 INFO L225 Difference]: With dead ends: 1663 [2020-04-18 19:14:37,488 INFO L226 Difference]: Without dead ends: 1159 [2020-04-18 19:14:37,490 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 307 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=559, Invalid=3223, Unknown=0, NotChecked=0, Total=3782 [2020-04-18 19:14:37,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-04-18 19:14:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1159. [2020-04-18 19:14:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-04-18 19:14:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 3503 transitions. [2020-04-18 19:14:37,521 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 3503 transitions. Word has length 45 [2020-04-18 19:14:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:14:37,522 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 3503 transitions. [2020-04-18 19:14:37,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 19:14:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 3503 transitions. [2020-04-18 19:14:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:14:37,525 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:14:37,525 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:14:37,525 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:14:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:37,525 INFO L82 PathProgramCache]: Analyzing trace with hash -962653023, now seen corresponding path program 1 times [2020-04-18 19:14:37,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:14:37,526 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [622953002] [2020-04-18 19:14:37,527 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:37,553 INFO L259 McrAutomatonBuilder]: Finished intersection with 1063 states and 3294 transitions. [2020-04-18 19:14:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states. [2020-04-18 19:14:37,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:14:37,566 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:14:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:37,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1649551315, now seen corresponding path program 2 times [2020-04-18 19:14:37,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:37,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473150893] [2020-04-18 19:14:37,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:14:37,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473150893] [2020-04-18 19:14:37,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:37,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:14:37,646 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:37,650 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:37,673 INFO L259 McrAutomatonBuilder]: Finished intersection with 156 states and 302 transitions. [2020-04-18 19:14:37,674 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:37,732 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:14:37,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:37,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:14:37,733 INFO L87 Difference]: Start difference. First operand 1063 states. Second operand 7 states. [2020-04-18 19:14:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:37,941 INFO L93 Difference]: Finished difference Result 1698 states and 4978 transitions. [2020-04-18 19:14:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 4978 transitions. [2020-04-18 19:14:37,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:14:37,945 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:14:37,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:37,945 INFO L82 PathProgramCache]: Analyzing trace with hash -429946923, now seen corresponding path program 3 times [2020-04-18 19:14:37,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:37,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862649606] [2020-04-18 19:14:37,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:38,024 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 19:14:38,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862649606] [2020-04-18 19:14:38,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:38,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:38,026 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:38,030 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:38,051 INFO L259 McrAutomatonBuilder]: Finished intersection with 161 states and 314 transitions. [2020-04-18 19:14:38,051 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:38,074 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:14:38,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:38,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:14:38,075 INFO L87 Difference]: Start difference. First operand 1698 states and 4978 transitions. Second operand 7 states. [2020-04-18 19:14:38,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:38,280 INFO L93 Difference]: Finished difference Result 2078 states and 5802 transitions. [2020-04-18 19:14:38,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 5802 transitions. [2020-04-18 19:14:38,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:14:38,284 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:14:38,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:38,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1818550557, now seen corresponding path program 4 times [2020-04-18 19:14:38,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:38,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369254300] [2020-04-18 19:14:38,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:38,376 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 19:14:38,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369254300] [2020-04-18 19:14:38,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:38,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:38,378 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:38,382 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:38,407 INFO L259 McrAutomatonBuilder]: Finished intersection with 180 states and 368 transitions. [2020-04-18 19:14:38,407 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:38,465 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:14:38,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:14:38,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:14:38,466 INFO L87 Difference]: Start difference. First operand 2078 states and 5802 transitions. Second operand 9 states. [2020-04-18 19:14:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:38,760 INFO L93 Difference]: Finished difference Result 2186 states and 6010 transitions. [2020-04-18 19:14:38,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 6010 transitions. [2020-04-18 19:14:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:14:38,765 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:14:38,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:38,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1256812347, now seen corresponding path program 5 times [2020-04-18 19:14:38,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:38,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466697157] [2020-04-18 19:14:38,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:14:38,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466697157] [2020-04-18 19:14:38,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:38,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:38,865 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:38,869 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:38,966 INFO L259 McrAutomatonBuilder]: Finished intersection with 203 states and 434 transitions. [2020-04-18 19:14:38,967 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:39,041 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:14:39,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:14:39,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2020-04-18 19:14:39,042 INFO L87 Difference]: Start difference. First operand 2186 states and 6010 transitions. Second operand 9 states. [2020-04-18 19:14:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:39,319 INFO L93 Difference]: Finished difference Result 2614 states and 7050 transitions. [2020-04-18 19:14:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 7050 transitions. [2020-04-18 19:14:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:14:39,324 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:14:39,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:39,325 INFO L82 PathProgramCache]: Analyzing trace with hash 2096674215, now seen corresponding path program 6 times [2020-04-18 19:14:39,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:39,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303730921] [2020-04-18 19:14:39,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:39,437 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 19:14:39,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303730921] [2020-04-18 19:14:39,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:39,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:39,438 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:39,442 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:39,474 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 415 transitions. [2020-04-18 19:14:39,474 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:39,647 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:14:39,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:14:39,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1334, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:14:39,648 INFO L87 Difference]: Start difference. First operand 2614 states and 7050 transitions. Second operand 8 states. [2020-04-18 19:14:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:39,924 INFO L93 Difference]: Finished difference Result 2614 states and 7050 transitions. [2020-04-18 19:14:39,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 7050 transitions. [2020-04-18 19:14:39,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:14:39,929 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [622953002] [2020-04-18 19:14:39,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:14:39,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:14:39,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [622953002] [2020-04-18 19:14:39,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 19:14:39,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:14:39,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:14:39,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1979, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 19:14:39,931 INFO L87 Difference]: Start difference. First operand 1159 states and 3503 transitions. Second operand 19 states. [2020-04-18 19:14:40,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:40,400 INFO L93 Difference]: Finished difference Result 1132 states and 3278 transitions. [2020-04-18 19:14:40,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 19:14:40,400 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 46 [2020-04-18 19:14:40,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:14:40,403 INFO L225 Difference]: With dead ends: 1132 [2020-04-18 19:14:40,404 INFO L226 Difference]: Without dead ends: 700 [2020-04-18 19:14:40,405 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=488, Invalid=2934, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 19:14:40,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-04-18 19:14:40,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2020-04-18 19:14:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-04-18 19:14:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1970 transitions. [2020-04-18 19:14:40,422 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1970 transitions. Word has length 46 [2020-04-18 19:14:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:14:40,422 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 1970 transitions. [2020-04-18 19:14:40,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 19:14:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1970 transitions. [2020-04-18 19:14:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:14:40,424 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:14:40,424 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:14:40,425 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:14:40,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:40,425 INFO L82 PathProgramCache]: Analyzing trace with hash -2043948480, now seen corresponding path program 1 times [2020-04-18 19:14:40,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:14:40,426 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1313831064] [2020-04-18 19:14:40,428 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:40,477 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 19:14:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 19:14:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:14:40,501 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:14:40,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:40,501 INFO L82 PathProgramCache]: Analyzing trace with hash -484838578, now seen corresponding path program 2 times [2020-04-18 19:14:40,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:40,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728819491] [2020-04-18 19:14:40,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:40,598 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 19:14:40,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728819491] [2020-04-18 19:14:40,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:40,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:14:40,599 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:40,603 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:40,633 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 398 transitions. [2020-04-18 19:14:40,633 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:40,688 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:14:40,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:14:40,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:14:40,689 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 7 states. [2020-04-18 19:14:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:40,911 INFO L93 Difference]: Finished difference Result 3154 states and 9970 transitions. [2020-04-18 19:14:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 9970 transitions. [2020-04-18 19:14:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:14:40,916 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:14:40,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:40,916 INFO L82 PathProgramCache]: Analyzing trace with hash 734765814, now seen corresponding path program 3 times [2020-04-18 19:14:40,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:40,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494193255] [2020-04-18 19:14:40,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:41,006 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 19:14:41,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494193255] [2020-04-18 19:14:41,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:41,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:14:41,007 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:41,013 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:41,057 INFO L259 McrAutomatonBuilder]: Finished intersection with 205 states and 420 transitions. [2020-04-18 19:14:41,058 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:41,227 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:14:41,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:14:41,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:14:41,228 INFO L87 Difference]: Start difference. First operand 3154 states and 9970 transitions. Second operand 14 states. [2020-04-18 19:14:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:41,785 INFO L93 Difference]: Finished difference Result 4358 states and 13418 transitions. [2020-04-18 19:14:41,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 13418 transitions. [2020-04-18 19:14:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:14:41,794 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:14:41,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:41,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1579171714, now seen corresponding path program 4 times [2020-04-18 19:14:41,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:41,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463077122] [2020-04-18 19:14:41,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:41,987 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 19:14:41,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463077122] [2020-04-18 19:14:41,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:41,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:14:41,988 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:41,990 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:42,008 INFO L259 McrAutomatonBuilder]: Finished intersection with 160 states and 302 transitions. [2020-04-18 19:14:42,008 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:42,117 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times. [2020-04-18 19:14:42,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:14:42,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=716, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:14:42,118 INFO L87 Difference]: Start difference. First operand 4358 states and 13418 transitions. Second operand 11 states. [2020-04-18 19:14:42,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:42,642 INFO L93 Difference]: Finished difference Result 5326 states and 15898 transitions. [2020-04-18 19:14:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 15898 transitions. [2020-04-18 19:14:42,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:14:42,652 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:14:42,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:42,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1433762296, now seen corresponding path program 5 times [2020-04-18 19:14:42,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:42,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437253488] [2020-04-18 19:14:42,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:42,746 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 19:14:42,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437253488] [2020-04-18 19:14:42,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:42,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:42,747 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:42,753 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:42,789 INFO L259 McrAutomatonBuilder]: Finished intersection with 221 states and 468 transitions. [2020-04-18 19:14:42,789 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:42,856 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times. [2020-04-18 19:14:42,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:14:42,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=1404, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 19:14:42,858 INFO L87 Difference]: Start difference. First operand 5326 states and 15898 transitions. Second operand 13 states. [2020-04-18 19:14:43,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:43,662 INFO L93 Difference]: Finished difference Result 6476 states and 19001 transitions. [2020-04-18 19:14:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 6476 states and 19001 transitions. [2020-04-18 19:14:43,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:14:43,670 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:14:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:14:43,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1099862712, now seen corresponding path program 6 times [2020-04-18 19:14:43,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:14:43,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111135323] [2020-04-18 19:14:43,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:14:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:14:43,757 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 19:14:43,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111135323] [2020-04-18 19:14:43,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:14:43,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:14:43,758 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:14:43,761 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:14:43,783 INFO L259 McrAutomatonBuilder]: Finished intersection with 214 states and 454 transitions. [2020-04-18 19:14:43,784 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:14:43,954 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:14:43,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:14:43,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=652, Invalid=2654, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 19:14:43,956 INFO L87 Difference]: Start difference. First operand 6476 states and 19001 transitions. Second operand 8 states. [2020-04-18 19:14:44,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:44,380 INFO L93 Difference]: Finished difference Result 6630 states and 19148 transitions. [2020-04-18 19:14:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 6630 states and 19148 transitions. [2020-04-18 19:14:44,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:14:44,388 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1313831064] [2020-04-18 19:14:44,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:14:44,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:14:44,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1313831064] [2020-04-18 19:14:44,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-18 19:14:44,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:14:44,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-18 19:14:44,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=3651, Unknown=0, NotChecked=0, Total=4422 [2020-04-18 19:14:44,390 INFO L87 Difference]: Start difference. First operand 700 states and 1970 transitions. Second operand 27 states. [2020-04-18 19:14:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:14:44,997 INFO L93 Difference]: Finished difference Result 646 states and 1808 transitions. [2020-04-18 19:14:44,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-04-18 19:14:44,997 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 48 [2020-04-18 19:14:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:14:44,998 INFO L225 Difference]: With dead ends: 646 [2020-04-18 19:14:44,998 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:14:45,001 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2193 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1109, Invalid=5533, Unknown=0, NotChecked=0, Total=6642 [2020-04-18 19:14:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:14:45,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:14:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:14:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:14:45,002 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 19:14:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:14:45,002 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:14:45,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-18 19:14:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:14:45,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:14:45,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:14:45 BasicIcfg [2020-04-18 19:14:45,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:14:45,010 INFO L168 Benchmark]: Toolchain (without parser) took 24256.45 ms. Allocated memory was 137.9 MB in the beginning and 774.4 MB in the end (delta: 636.5 MB). Free memory was 100.9 MB in the beginning and 465.1 MB in the end (delta: -364.2 MB). Peak memory consumption was 272.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:14:45,010 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 19:14:45,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.08 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 98.9 MB in the beginning and 159.7 MB in the end (delta: -60.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:14:45,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 157.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:14:45,012 INFO L168 Benchmark]: Boogie Preprocessor took 25.58 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:14:45,012 INFO L168 Benchmark]: RCFGBuilder took 483.45 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 133.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:14:45,013 INFO L168 Benchmark]: TraceAbstraction took 23004.56 ms. Allocated memory was 202.9 MB in the beginning and 774.4 MB in the end (delta: 571.5 MB). Free memory was 133.1 MB in the beginning and 465.1 MB in the end (delta: -331.9 MB). Peak memory consumption was 239.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:14:45,015 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 672.08 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 98.9 MB in the beginning and 159.7 MB in the end (delta: -60.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 157.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.58 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 483.45 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 133.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23004.56 ms. Allocated memory was 202.9 MB in the beginning and 774.4 MB in the end (delta: 571.5 MB). Free memory was 133.1 MB in the beginning and 465.1 MB in the end (delta: -331.9 MB). Peak memory consumption was 239.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 22.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 960 SDtfs, 3439 SDslu, 6217 SDs, 0 SdLazy, 1639 SolverSat, 360 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2145 GetRequests, 1776 SyntacticMatches, 8 SemanticMatches, 361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6993 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 1.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 3328 StatesRemovedByMinimization, 4 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...