/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:19:14,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:19:14,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:19:14,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:19:14,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:19:14,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:19:14,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:19:14,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:19:14,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:19:14,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:19:14,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:19:14,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:19:14,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:19:14,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:19:14,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:19:14,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:19:14,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:19:14,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:19:14,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:19:14,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:19:14,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:19:14,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:19:14,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:19:14,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:19:14,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:19:14,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:19:14,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:19:14,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:19:14,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:19:14,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:19:14,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:19:14,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:19:14,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:19:14,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:19:14,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:19:14,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:19:14,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:19:14,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:19:14,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:19:14,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:19:14,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:19:14,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:19:14,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:19:14,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:19:14,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:19:14,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:19:14,325 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:19:14,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:19:14,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:19:14,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:19:14,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:19:14,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:19:14,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:19:14,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:19:14,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:19:14,327 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:19:14,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:19:14,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:19:14,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:19:14,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:19:14,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:19:14,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:19:14,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:19:14,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:19:14,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:19:14,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:19:14,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:19:14,330 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:19:14,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:19:14,330 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:19:14,330 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:19:14,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:19:14,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:19:14,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:19:14,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:19:14,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:19:14,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:19:14,690 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:19:14,692 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2020-04-18 15:19:14,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/803d469ea/14d7994c6f144d91b508bda6f2778118/FLAG37a14fc46 [2020-04-18 15:19:15,318 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:19:15,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2020-04-18 15:19:15,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/803d469ea/14d7994c6f144d91b508bda6f2778118/FLAG37a14fc46 [2020-04-18 15:19:15,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/803d469ea/14d7994c6f144d91b508bda6f2778118 [2020-04-18 15:19:15,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:19:15,613 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:19:15,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:19:15,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:19:15,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:19:15,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:19:15" (1/1) ... [2020-04-18 15:19:15,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e27ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:15, skipping insertion in model container [2020-04-18 15:19:15,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:19:15" (1/1) ... [2020-04-18 15:19:15,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:19:15,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:19:16,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:19:16,300 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:19:16,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:19:16,466 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:19:16,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16 WrapperNode [2020-04-18 15:19:16,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:19:16,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:19:16,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:19:16,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:19:16,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16" (1/1) ... [2020-04-18 15:19:16,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16" (1/1) ... [2020-04-18 15:19:16,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:19:16,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:19:16,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:19:16,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:19:16,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16" (1/1) ... [2020-04-18 15:19:16,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16" (1/1) ... [2020-04-18 15:19:16,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16" (1/1) ... [2020-04-18 15:19:16,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16" (1/1) ... [2020-04-18 15:19:16,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16" (1/1) ... [2020-04-18 15:19:16,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16" (1/1) ... [2020-04-18 15:19:16,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16" (1/1) ... [2020-04-18 15:19:16,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:19:16,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:19:16,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:19:16,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:19:16,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:19:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:19:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:19:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:19:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:19:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:19:16,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:19:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:19:16,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:19:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:19:16,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:19:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 15:19:16,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 15:19:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:19:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:19:16,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:19:16,686 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:19:17,094 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:19:17,094 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:19:17,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:19:17 BoogieIcfgContainer [2020-04-18 15:19:17,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:19:17,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:19:17,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:19:17,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:19:17,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:19:15" (1/3) ... [2020-04-18 15:19:17,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc3de41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:19:17, skipping insertion in model container [2020-04-18 15:19:17,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:16" (2/3) ... [2020-04-18 15:19:17,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc3de41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:19:17, skipping insertion in model container [2020-04-18 15:19:17,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:19:17" (3/3) ... [2020-04-18 15:19:17,111 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2020-04-18 15:19:17,121 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:19:17,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:19:17,130 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:19:17,131 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:19:17,162 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,162 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,163 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,163 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,163 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,164 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,164 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,164 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,164 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,165 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,165 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,165 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,166 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,166 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,166 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,166 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,167 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,167 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,168 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,168 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,168 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,168 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,169 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,169 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,174 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,175 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,175 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,175 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,181 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,181 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,181 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,182 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,185 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,185 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,185 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,185 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,189 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,189 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,189 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,190 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:17,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 15:19:17,227 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:19:17,227 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:19:17,228 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:19:17,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:19:17,228 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:19:17,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:19:17,228 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:19:17,228 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:19:17,246 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-04-18 15:19:17,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-04-18 15:19:17,295 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-04-18 15:19:17,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:19:17,301 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 15:19:17,304 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-04-18 15:19:17,328 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-04-18 15:19:17,329 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:19:17,330 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 15:19:17,333 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 15:19:17,334 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:19:18,976 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-04-18 15:19:19,115 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 15:19:19,189 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3093 [2020-04-18 15:19:19,190 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2020-04-18 15:19:19,194 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-04-18 15:19:19,257 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-04-18 15:19:19,261 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-04-18 15:19:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:19:19,282 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:19,284 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:19,284 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:19,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-04-18 15:19:19,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:19,307 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1225852189] [2020-04-18 15:19:19,332 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:19,351 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:19:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 15:19:19,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:19:19,353 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:19,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:19,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 2 times [2020-04-18 15:19:19,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:19,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608555500] [2020-04-18 15:19:19,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:19,645 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 15:19:19,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608555500] [2020-04-18 15:19:19,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:19,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:19:19,649 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:19,651 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:19,655 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:19:19,655 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:19,665 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:19:19,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:19:19,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:19:19,674 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-04-18 15:19:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:19,682 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 15:19:19,682 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 15:19:19,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:19,683 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1225852189] [2020-04-18 15:19:19,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:19,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:19:19,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1225852189] [2020-04-18 15:19:19,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:19:19,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:19,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:19:19,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:19:19,699 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-04-18 15:19:19,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:19,752 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-04-18 15:19:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:19:19,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 15:19:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:19,802 INFO L225 Difference]: With dead ends: 670 [2020-04-18 15:19:19,802 INFO L226 Difference]: Without dead ends: 526 [2020-04-18 15:19:19,805 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:19:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-04-18 15:19:19,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-04-18 15:19:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-04-18 15:19:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-04-18 15:19:19,931 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-04-18 15:19:19,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:19,932 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-04-18 15:19:19,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:19:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-04-18 15:19:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:19:19,934 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:19,935 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:19,935 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:19,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2027540211, now seen corresponding path program 1 times [2020-04-18 15:19:19,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:19,936 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [694608404] [2020-04-18 15:19:19,937 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:19,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-04-18 15:19:19,938 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:19:19,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:19:19,938 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:19,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2027540211, now seen corresponding path program 2 times [2020-04-18 15:19:19,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:19,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504825021] [2020-04-18 15:19:19,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:20,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504825021] [2020-04-18 15:19:20,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:20,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:20,031 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:20,033 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:20,035 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 15:19:20,035 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:20,140 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:19:20,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:20,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:19:20,140 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 7 states. [2020-04-18 15:19:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:20,165 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2020-04-18 15:19:20,165 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2020-04-18 15:19:20,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:20,166 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [694608404] [2020-04-18 15:19:20,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:20,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:19:20,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [694608404] [2020-04-18 15:19:20,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:19:20,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:20,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:20,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:19:20,169 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 7 states. [2020-04-18 15:19:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:20,210 INFO L93 Difference]: Finished difference Result 724 states and 2331 transitions. [2020-04-18 15:19:20,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:19:20,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-04-18 15:19:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:20,215 INFO L225 Difference]: With dead ends: 724 [2020-04-18 15:19:20,216 INFO L226 Difference]: Without dead ends: 412 [2020-04-18 15:19:20,217 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:19:20,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-04-18 15:19:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-04-18 15:19:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-04-18 15:19:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1323 transitions. [2020-04-18 15:19:20,267 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1323 transitions. Word has length 11 [2020-04-18 15:19:20,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:20,267 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 1323 transitions. [2020-04-18 15:19:20,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:19:20,267 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1323 transitions. [2020-04-18 15:19:20,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:19:20,269 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:20,269 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:20,269 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:20,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:20,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1543893440, now seen corresponding path program 1 times [2020-04-18 15:19:20,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:20,270 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1546107632] [2020-04-18 15:19:20,271 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:20,274 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 40 transitions. [2020-04-18 15:19:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 15:19:20,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:19:20,275 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:20,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1570763120, now seen corresponding path program 2 times [2020-04-18 15:19:20,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:20,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273085400] [2020-04-18 15:19:20,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:20,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273085400] [2020-04-18 15:19:20,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:20,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:20,375 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:20,376 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:20,378 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 15:19:20,378 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:20,511 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:19:20,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:20,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:19:20,512 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2020-04-18 15:19:20,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:20,540 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2020-04-18 15:19:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 42 transitions. [2020-04-18 15:19:20,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:19:20,541 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:20,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:20,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1543893440, now seen corresponding path program 3 times [2020-04-18 15:19:20,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:20,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924616344] [2020-04-18 15:19:20,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:20,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924616344] [2020-04-18 15:19:20,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:20,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:19:20,638 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:20,643 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:20,645 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-04-18 15:19:20,646 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:20,655 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:19:20,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:19:20,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:19:20,657 INFO L87 Difference]: Start difference. First operand 29 states and 42 transitions. Second operand 3 states. [2020-04-18 15:19:20,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:20,658 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2020-04-18 15:19:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 42 transitions. [2020-04-18 15:19:20,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:20,660 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1546107632] [2020-04-18 15:19:20,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:20,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:19:20,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1546107632] [2020-04-18 15:19:20,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:19:20,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:20,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:19:20,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:19:20,661 INFO L87 Difference]: Start difference. First operand 412 states and 1323 transitions. Second operand 8 states. [2020-04-18 15:19:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:20,737 INFO L93 Difference]: Finished difference Result 394 states and 1254 transitions. [2020-04-18 15:19:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:19:20,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-04-18 15:19:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:20,742 INFO L225 Difference]: With dead ends: 394 [2020-04-18 15:19:20,742 INFO L226 Difference]: Without dead ends: 394 [2020-04-18 15:19:20,743 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:19:20,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-04-18 15:19:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-04-18 15:19:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-04-18 15:19:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1254 transitions. [2020-04-18 15:19:20,760 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1254 transitions. Word has length 12 [2020-04-18 15:19:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:20,761 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1254 transitions. [2020-04-18 15:19:20,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:19:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1254 transitions. [2020-04-18 15:19:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:20,766 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:20,767 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:20,767 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1381595750, now seen corresponding path program 1 times [2020-04-18 15:19:20,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:20,768 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1988427926] [2020-04-18 15:19:20,769 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:20,770 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 73 transitions. [2020-04-18 15:19:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-04-18 15:19:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:20,772 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:20,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:20,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1381595750, now seen corresponding path program 2 times [2020-04-18 15:19:20,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:20,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449503705] [2020-04-18 15:19:20,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:20,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449503705] [2020-04-18 15:19:20,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:20,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:20,843 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:20,844 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:20,849 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 15:19:20,849 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:20,893 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:19:20,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:20,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:19:20,895 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2020-04-18 15:19:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:20,935 INFO L93 Difference]: Finished difference Result 47 states and 78 transitions. [2020-04-18 15:19:20,935 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-18 15:19:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:20,936 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:20,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1418594390, now seen corresponding path program 3 times [2020-04-18 15:19:20,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:20,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882074187] [2020-04-18 15:19:20,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:20,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882074187] [2020-04-18 15:19:20,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:20,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:20,995 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:20,996 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:20,999 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-04-18 15:19:21,000 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:21,125 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:19:21,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:21,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:19:21,126 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 7 states. [2020-04-18 15:19:21,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:21,172 INFO L93 Difference]: Finished difference Result 48 states and 78 transitions. [2020-04-18 15:19:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 78 transitions. [2020-04-18 15:19:21,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:21,173 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1988427926] [2020-04-18 15:19:21,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:21,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:19:21,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1988427926] [2020-04-18 15:19:21,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:19:21,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:21,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:19:21,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:19:21,175 INFO L87 Difference]: Start difference. First operand 394 states and 1254 transitions. Second operand 11 states. [2020-04-18 15:19:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:21,261 INFO L93 Difference]: Finished difference Result 652 states and 1957 transitions. [2020-04-18 15:19:21,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 15:19:21,262 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-04-18 15:19:21,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:21,265 INFO L225 Difference]: With dead ends: 652 [2020-04-18 15:19:21,265 INFO L226 Difference]: Without dead ends: 340 [2020-04-18 15:19:21,266 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:19:21,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-04-18 15:19:21,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 304. [2020-04-18 15:19:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-04-18 15:19:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 891 transitions. [2020-04-18 15:19:21,278 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 891 transitions. Word has length 13 [2020-04-18 15:19:21,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:21,283 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 891 transitions. [2020-04-18 15:19:21,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:19:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 891 transitions. [2020-04-18 15:19:21,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:21,284 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:21,286 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:21,286 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:21,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:21,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1391724752, now seen corresponding path program 1 times [2020-04-18 15:19:21,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:21,288 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1971732436] [2020-04-18 15:19:21,289 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:21,290 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 82 transitions. [2020-04-18 15:19:21,292 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-04-18 15:19:21,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:21,293 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:21,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:21,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1418594432, now seen corresponding path program 2 times [2020-04-18 15:19:21,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:21,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915990919] [2020-04-18 15:19:21,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:21,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915990919] [2020-04-18 15:19:21,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:21,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:21,356 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:21,358 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:21,361 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-04-18 15:19:21,362 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:21,468 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:19:21,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:21,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:19:21,469 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 7 states. [2020-04-18 15:19:21,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:21,496 INFO L93 Difference]: Finished difference Result 48 states and 89 transitions. [2020-04-18 15:19:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2020-04-18 15:19:21,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:21,496 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:21,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:21,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1391724752, now seen corresponding path program 3 times [2020-04-18 15:19:21,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:21,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902440298] [2020-04-18 15:19:21,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:21,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902440298] [2020-04-18 15:19:21,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:21,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:21,585 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:21,586 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:21,588 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-04-18 15:19:21,589 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:21,631 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:19:21,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:19:21,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:19:21,631 INFO L87 Difference]: Start difference. First operand 48 states and 89 transitions. Second operand 5 states. [2020-04-18 15:19:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:21,650 INFO L93 Difference]: Finished difference Result 48 states and 89 transitions. [2020-04-18 15:19:21,651 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2020-04-18 15:19:21,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:21,651 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1971732436] [2020-04-18 15:19:21,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:21,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:19:21,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1971732436] [2020-04-18 15:19:21,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:19:21,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:21,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:19:21,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:19:21,653 INFO L87 Difference]: Start difference. First operand 304 states and 891 transitions. Second operand 10 states. [2020-04-18 15:19:21,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:21,736 INFO L93 Difference]: Finished difference Result 406 states and 1128 transitions. [2020-04-18 15:19:21,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 15:19:21,737 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-04-18 15:19:21,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:21,739 INFO L225 Difference]: With dead ends: 406 [2020-04-18 15:19:21,740 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 15:19:21,740 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:19:21,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 15:19:21,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 15:19:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 15:19:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 619 transitions. [2020-04-18 15:19:21,750 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 619 transitions. Word has length 13 [2020-04-18 15:19:21,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:21,751 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 619 transitions. [2020-04-18 15:19:21,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:19:21,751 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 619 transitions. [2020-04-18 15:19:21,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:19:21,752 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:21,752 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:21,752 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:21,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:21,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 1 times [2020-04-18 15:19:21,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:21,754 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2001711039] [2020-04-18 15:19:21,754 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:21,756 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 192 transitions. [2020-04-18 15:19:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-04-18 15:19:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:19:21,758 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:21,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:21,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1189219835, now seen corresponding path program 2 times [2020-04-18 15:19:21,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:21,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099103432] [2020-04-18 15:19:21,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:21,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099103432] [2020-04-18 15:19:21,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:21,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:21,829 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:21,830 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:21,834 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 72 transitions. [2020-04-18 15:19:21,834 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:21,926 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:19:21,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:21,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:19:21,927 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 7 states. [2020-04-18 15:19:21,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:21,958 INFO L93 Difference]: Finished difference Result 90 states and 212 transitions. [2020-04-18 15:19:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 212 transitions. [2020-04-18 15:19:21,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:19:21,959 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:21,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:21,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 3 times [2020-04-18 15:19:21,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:21,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573387898] [2020-04-18 15:19:21,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:22,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573387898] [2020-04-18 15:19:22,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:22,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:22,040 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:22,041 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:22,046 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 54 transitions. [2020-04-18 15:19:22,046 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:22,070 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:19:22,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:19:22,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:19:22,071 INFO L87 Difference]: Start difference. First operand 90 states and 212 transitions. Second operand 4 states. [2020-04-18 15:19:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:22,086 INFO L93 Difference]: Finished difference Result 90 states and 212 transitions. [2020-04-18 15:19:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 212 transitions. [2020-04-18 15:19:22,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:22,087 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2001711039] [2020-04-18 15:19:22,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:22,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:19:22,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2001711039] [2020-04-18 15:19:22,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:19:22,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:22,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:19:22,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:19:22,088 INFO L87 Difference]: Start difference. First operand 226 states and 619 transitions. Second operand 9 states. [2020-04-18 15:19:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:22,260 INFO L93 Difference]: Finished difference Result 287 states and 728 transitions. [2020-04-18 15:19:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 15:19:22,261 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 15:19:22,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:22,263 INFO L225 Difference]: With dead ends: 287 [2020-04-18 15:19:22,263 INFO L226 Difference]: Without dead ends: 206 [2020-04-18 15:19:22,264 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:19:22,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-04-18 15:19:22,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-04-18 15:19:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-04-18 15:19:22,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 530 transitions. [2020-04-18 15:19:22,271 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 530 transitions. Word has length 14 [2020-04-18 15:19:22,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:22,272 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 530 transitions. [2020-04-18 15:19:22,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:19:22,272 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 530 transitions. [2020-04-18 15:19:22,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:19:22,273 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:22,273 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:22,273 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:22,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:22,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-04-18 15:19:22,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:22,274 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [28072953] [2020-04-18 15:19:22,274 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:22,276 INFO L259 McrAutomatonBuilder]: Finished intersection with 102 states and 268 transitions. [2020-04-18 15:19:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-04-18 15:19:22,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:19:22,278 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:22,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:22,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1788890552, now seen corresponding path program 2 times [2020-04-18 15:19:22,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:22,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031116665] [2020-04-18 15:19:22,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:22,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031116665] [2020-04-18 15:19:22,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:22,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:22,314 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:22,315 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:22,320 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 73 transitions. [2020-04-18 15:19:22,320 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:22,410 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:19:22,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:22,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:19:22,411 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 7 states. [2020-04-18 15:19:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:22,439 INFO L93 Difference]: Finished difference Result 126 states and 320 transitions. [2020-04-18 15:19:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 320 transitions. [2020-04-18 15:19:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:19:22,440 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:22,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:22,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1673122304, now seen corresponding path program 3 times [2020-04-18 15:19:22,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:22,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287009528] [2020-04-18 15:19:22,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:22,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287009528] [2020-04-18 15:19:22,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:22,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:22,488 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:22,489 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:22,496 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 69 transitions. [2020-04-18 15:19:22,496 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:22,525 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:22,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:19:22,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:19:22,525 INFO L87 Difference]: Start difference. First operand 126 states and 320 transitions. Second operand 4 states. [2020-04-18 15:19:22,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:22,545 INFO L93 Difference]: Finished difference Result 150 states and 364 transitions. [2020-04-18 15:19:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 364 transitions. [2020-04-18 15:19:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:19:22,546 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:19:22,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 4 times [2020-04-18 15:19:22,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:22,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043450594] [2020-04-18 15:19:22,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:22,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043450594] [2020-04-18 15:19:22,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:22,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:22,598 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:22,599 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:22,605 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 59 transitions. [2020-04-18 15:19:22,605 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:22,619 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:19:22,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:19:22,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:19:22,620 INFO L87 Difference]: Start difference. First operand 150 states and 364 transitions. Second operand 5 states. [2020-04-18 15:19:22,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:22,649 INFO L93 Difference]: Finished difference Result 150 states and 364 transitions. [2020-04-18 15:19:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 364 transitions. [2020-04-18 15:19:22,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:22,651 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [28072953] [2020-04-18 15:19:22,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:22,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:19:22,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [28072953] [2020-04-18 15:19:22,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:19:22,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:22,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:19:22,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:19:22,653 INFO L87 Difference]: Start difference. First operand 206 states and 530 transitions. Second operand 10 states. [2020-04-18 15:19:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:22,894 INFO L93 Difference]: Finished difference Result 227 states and 530 transitions. [2020-04-18 15:19:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 15:19:22,894 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 15:19:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:22,896 INFO L225 Difference]: With dead ends: 227 [2020-04-18 15:19:22,896 INFO L226 Difference]: Without dead ends: 162 [2020-04-18 15:19:22,896 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:19:22,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-04-18 15:19:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-04-18 15:19:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-18 15:19:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 369 transitions. [2020-04-18 15:19:22,901 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 369 transitions. Word has length 15 [2020-04-18 15:19:22,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:22,902 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 369 transitions. [2020-04-18 15:19:22,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:19:22,902 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 369 transitions. [2020-04-18 15:19:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:19:22,903 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:22,903 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:22,903 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:22,903 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-04-18 15:19:22,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:22,904 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [138461603] [2020-04-18 15:19:22,904 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:22,907 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 422 transitions. [2020-04-18 15:19:22,908 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-04-18 15:19:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:19:22,909 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:22,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:22,910 INFO L82 PathProgramCache]: Analyzing trace with hash 378967974, now seen corresponding path program 2 times [2020-04-18 15:19:22,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:22,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693953534] [2020-04-18 15:19:22,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:22,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693953534] [2020-04-18 15:19:22,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:22,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:22,961 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:22,962 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:22,968 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 74 transitions. [2020-04-18 15:19:22,969 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:23,083 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:19:23,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:23,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:19:23,084 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 7 states. [2020-04-18 15:19:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:23,107 INFO L93 Difference]: Finished difference Result 186 states and 506 transitions. [2020-04-18 15:19:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 506 transitions. [2020-04-18 15:19:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:19:23,108 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:23,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:23,109 INFO L82 PathProgramCache]: Analyzing trace with hash 327184110, now seen corresponding path program 3 times [2020-04-18 15:19:23,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:23,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236734145] [2020-04-18 15:19:23,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:23,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:23,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236734145] [2020-04-18 15:19:23,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:23,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:23,184 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:23,186 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:23,195 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 79 transitions. [2020-04-18 15:19:23,195 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:23,227 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:23,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:19:23,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:19:23,228 INFO L87 Difference]: Start difference. First operand 186 states and 506 transitions. Second operand 4 states. [2020-04-18 15:19:23,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:23,260 INFO L93 Difference]: Finished difference Result 242 states and 626 transitions. [2020-04-18 15:19:23,260 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 626 transitions. [2020-04-18 15:19:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:19:23,261 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:19:23,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:23,262 INFO L82 PathProgramCache]: Analyzing trace with hash -468235590, now seen corresponding path program 4 times [2020-04-18 15:19:23,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:23,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631915007] [2020-04-18 15:19:23,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:23,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631915007] [2020-04-18 15:19:23,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:23,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:23,346 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:23,351 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:23,360 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 69 transitions. [2020-04-18 15:19:23,360 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:23,378 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:19:23,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:19:23,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:19:23,379 INFO L87 Difference]: Start difference. First operand 242 states and 626 transitions. Second operand 5 states. [2020-04-18 15:19:23,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:23,433 INFO L93 Difference]: Finished difference Result 254 states and 642 transitions. [2020-04-18 15:19:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 642 transitions. [2020-04-18 15:19:23,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:19:23,434 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:19:23,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:23,434 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 5 times [2020-04-18 15:19:23,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:23,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468682893] [2020-04-18 15:19:23,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:23,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468682893] [2020-04-18 15:19:23,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:23,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:23,518 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:23,521 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:23,527 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-04-18 15:19:23,528 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:23,547 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:19:23,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:23,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:19:23,547 INFO L87 Difference]: Start difference. First operand 254 states and 642 transitions. Second operand 6 states. [2020-04-18 15:19:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:23,596 INFO L93 Difference]: Finished difference Result 254 states and 642 transitions. [2020-04-18 15:19:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 642 transitions. [2020-04-18 15:19:23,597 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:23,597 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [138461603] [2020-04-18 15:19:23,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:23,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:19:23,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [138461603] [2020-04-18 15:19:23,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:19:23,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:23,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:19:23,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:19:23,598 INFO L87 Difference]: Start difference. First operand 162 states and 369 transitions. Second operand 11 states. [2020-04-18 15:19:23,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:23,796 INFO L93 Difference]: Finished difference Result 158 states and 337 transitions. [2020-04-18 15:19:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 15:19:23,796 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-04-18 15:19:23,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:23,798 INFO L225 Difference]: With dead ends: 158 [2020-04-18 15:19:23,798 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 15:19:23,798 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:19:23,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 15:19:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 15:19:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 15:19:23,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-04-18 15:19:23,803 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 16 [2020-04-18 15:19:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:23,803 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-04-18 15:19:23,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:19:23,804 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-04-18 15:19:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:23,804 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:23,804 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:23,805 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:23,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 1 times [2020-04-18 15:19:23,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:23,807 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1417627087] [2020-04-18 15:19:23,807 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:23,813 INFO L259 McrAutomatonBuilder]: Finished intersection with 282 states and 876 transitions. [2020-04-18 15:19:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-04-18 15:19:23,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:23,817 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:23,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:23,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1331930345, now seen corresponding path program 2 times [2020-04-18 15:19:23,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:23,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262866367] [2020-04-18 15:19:23,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:23,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262866367] [2020-04-18 15:19:23,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:23,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:23,863 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:23,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:23,872 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 74 transitions. [2020-04-18 15:19:23,874 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:23,909 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:23,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:23,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:19:23,909 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 6 states. [2020-04-18 15:19:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:23,953 INFO L93 Difference]: Finished difference Result 492 states and 1409 transitions. [2020-04-18 15:19:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1409 transitions. [2020-04-18 15:19:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:23,956 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:23,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1281016031, now seen corresponding path program 3 times [2020-04-18 15:19:23,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:23,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602500953] [2020-04-18 15:19:23,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:24,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602500953] [2020-04-18 15:19:24,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:24,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:24,050 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:24,053 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:24,059 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 55 transitions. [2020-04-18 15:19:24,059 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:24,067 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:19:24,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:19:24,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:19:24,067 INFO L87 Difference]: Start difference. First operand 492 states and 1409 transitions. Second operand 3 states. [2020-04-18 15:19:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:24,072 INFO L93 Difference]: Finished difference Result 558 states and 1537 transitions. [2020-04-18 15:19:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1537 transitions. [2020-04-18 15:19:24,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:24,074 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:19:24,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:24,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1280146481, now seen corresponding path program 4 times [2020-04-18 15:19:24,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:24,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785722568] [2020-04-18 15:19:24,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:24,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785722568] [2020-04-18 15:19:24,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:24,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:24,143 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:24,144 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:24,150 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 64 transitions. [2020-04-18 15:19:24,151 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:24,206 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:19:24,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:24,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:19:24,208 INFO L87 Difference]: Start difference. First operand 558 states and 1537 transitions. Second operand 6 states. [2020-04-18 15:19:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:24,302 INFO L93 Difference]: Finished difference Result 642 states and 1670 transitions. [2020-04-18 15:19:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1670 transitions. [2020-04-18 15:19:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:24,304 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:19:24,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:24,305 INFO L82 PathProgramCache]: Analyzing trace with hash 484726781, now seen corresponding path program 5 times [2020-04-18 15:19:24,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:24,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156878985] [2020-04-18 15:19:24,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:24,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156878985] [2020-04-18 15:19:24,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:24,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:19:24,361 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:24,362 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:24,368 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 60 transitions. [2020-04-18 15:19:24,368 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:24,399 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:19:24,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:24,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:19:24,400 INFO L87 Difference]: Start difference. First operand 642 states and 1670 transitions. Second operand 7 states. [2020-04-18 15:19:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:24,505 INFO L93 Difference]: Finished difference Result 654 states and 1680 transitions. [2020-04-18 15:19:24,505 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1680 transitions. [2020-04-18 15:19:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:24,508 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:19:24,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:24,508 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 6 times [2020-04-18 15:19:24,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:24,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681975367] [2020-04-18 15:19:24,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:24,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681975367] [2020-04-18 15:19:24,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:24,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:19:24,569 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:24,570 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:24,577 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 58 transitions. [2020-04-18 15:19:24,577 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:24,610 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:24,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:19:24,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:19:24,614 INFO L87 Difference]: Start difference. First operand 654 states and 1680 transitions. Second operand 8 states. [2020-04-18 15:19:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:24,731 INFO L93 Difference]: Finished difference Result 654 states and 1680 transitions. [2020-04-18 15:19:24,731 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1680 transitions. [2020-04-18 15:19:24,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:24,734 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1417627087] [2020-04-18 15:19:24,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:24,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:19:24,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1417627087] [2020-04-18 15:19:24,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 15:19:24,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:24,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 15:19:24,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:19:24,736 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 13 states. [2020-04-18 15:19:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:24,987 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-04-18 15:19:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 15:19:24,988 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-04-18 15:19:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:24,989 INFO L225 Difference]: With dead ends: 120 [2020-04-18 15:19:24,989 INFO L226 Difference]: Without dead ends: 71 [2020-04-18 15:19:24,990 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2020-04-18 15:19:24,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-04-18 15:19:24,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-04-18 15:19:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-04-18 15:19:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-04-18 15:19:24,994 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-04-18 15:19:24,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:24,994 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-04-18 15:19:24,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 15:19:24,994 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-04-18 15:19:24,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:24,995 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:24,995 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] [2020-04-18 15:19:24,995 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-04-18 15:19:24,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:24,996 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [298602948] [2020-04-18 15:19:24,997 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:25,006 INFO L259 McrAutomatonBuilder]: Finished intersection with 562 states and 1890 transitions. [2020-04-18 15:19:25,011 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2020-04-18 15:19:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:25,014 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:25,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:25,014 INFO L82 PathProgramCache]: Analyzing trace with hash 106505205, now seen corresponding path program 2 times [2020-04-18 15:19:25,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:25,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085843242] [2020-04-18 15:19:25,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:25,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085843242] [2020-04-18 15:19:25,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:25,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:25,042 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:25,044 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:25,052 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 88 transitions. [2020-04-18 15:19:25,053 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:25,097 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:25,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:25,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:19:25,098 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 6 states. [2020-04-18 15:19:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:25,148 INFO L93 Difference]: Finished difference Result 1084 states and 3459 transitions. [2020-04-18 15:19:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 3459 transitions. [2020-04-18 15:19:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:25,151 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:25,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:25,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1599267629, now seen corresponding path program 3 times [2020-04-18 15:19:25,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:25,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410280013] [2020-04-18 15:19:25,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:25,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410280013] [2020-04-18 15:19:25,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:25,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:25,183 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:25,185 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:25,219 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 15:19:25,219 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:25,227 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:19:25,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:19:25,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:19:25,228 INFO L87 Difference]: Start difference. First operand 1084 states and 3459 transitions. Second operand 3 states. [2020-04-18 15:19:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:25,235 INFO L93 Difference]: Finished difference Result 1282 states and 3975 transitions. [2020-04-18 15:19:25,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 3975 transitions. [2020-04-18 15:19:25,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:25,239 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:19:25,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:25,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1860062117, now seen corresponding path program 4 times [2020-04-18 15:19:25,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:25,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316348540] [2020-04-18 15:19:25,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:25,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316348540] [2020-04-18 15:19:25,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:25,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:25,280 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:25,282 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:25,289 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 64 transitions. [2020-04-18 15:19:25,289 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:25,352 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:19:25,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:25,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:19:25,353 INFO L87 Difference]: Start difference. First operand 1282 states and 3975 transitions. Second operand 6 states. [2020-04-18 15:19:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:25,468 INFO L93 Difference]: Finished difference Result 1541 states and 4514 transitions. [2020-04-18 15:19:25,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 4514 transitions. [2020-04-18 15:19:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:25,472 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:19:25,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:25,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1965909105, now seen corresponding path program 5 times [2020-04-18 15:19:25,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:25,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915422301] [2020-04-18 15:19:25,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:25,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915422301] [2020-04-18 15:19:25,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:25,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:19:25,527 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:25,529 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:25,535 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 58 transitions. [2020-04-18 15:19:25,535 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:25,569 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:19:25,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:25,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:19:25,569 INFO L87 Difference]: Start difference. First operand 1541 states and 4514 transitions. Second operand 7 states. [2020-04-18 15:19:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:25,734 INFO L93 Difference]: Finished difference Result 1602 states and 4600 transitions. [2020-04-18 15:19:25,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 4600 transitions. [2020-04-18 15:19:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:25,739 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:19:25,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:25,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1087361355, now seen corresponding path program 6 times [2020-04-18 15:19:25,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:25,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015353740] [2020-04-18 15:19:25,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:25,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015353740] [2020-04-18 15:19:25,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:25,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:25,765 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:25,766 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:25,773 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 65 transitions. [2020-04-18 15:19:25,773 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:25,801 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:19:25,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:19:25,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:19:25,801 INFO L87 Difference]: Start difference. First operand 1602 states and 4600 transitions. Second operand 4 states. [2020-04-18 15:19:25,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:25,831 INFO L93 Difference]: Finished difference Result 2355 states and 6427 transitions. [2020-04-18 15:19:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 6427 transitions. [2020-04-18 15:19:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:25,837 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:19:25,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:25,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1152160785, now seen corresponding path program 7 times [2020-04-18 15:19:25,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:25,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240590983] [2020-04-18 15:19:25,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:25,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240590983] [2020-04-18 15:19:25,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:25,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:19:25,884 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:25,886 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:25,892 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 60 transitions. [2020-04-18 15:19:25,892 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:25,926 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:25,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:19:25,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:19:25,927 INFO L87 Difference]: Start difference. First operand 2355 states and 6427 transitions. Second operand 8 states. [2020-04-18 15:19:26,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:26,133 INFO L93 Difference]: Finished difference Result 2367 states and 6435 transitions. [2020-04-18 15:19:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 6435 transitions. [2020-04-18 15:19:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:26,139 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:19:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:26,139 INFO L82 PathProgramCache]: Analyzing trace with hash 16625717, now seen corresponding path program 8 times [2020-04-18 15:19:26,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:26,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714058451] [2020-04-18 15:19:26,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:26,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714058451] [2020-04-18 15:19:26,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:26,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:26,172 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:26,173 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:26,180 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 58 transitions. [2020-04-18 15:19:26,180 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:26,244 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:19:26,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:19:26,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:19:26,245 INFO L87 Difference]: Start difference. First operand 2367 states and 6435 transitions. Second operand 5 states. [2020-04-18 15:19:26,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:26,323 INFO L93 Difference]: Finished difference Result 3755 states and 9942 transitions. [2020-04-18 15:19:26,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 9942 transitions. [2020-04-18 15:19:26,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:26,331 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 15:19:26,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:26,332 INFO L82 PathProgramCache]: Analyzing trace with hash 216357237, now seen corresponding path program 9 times [2020-04-18 15:19:26,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:26,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086542956] [2020-04-18 15:19:26,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:26,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086542956] [2020-04-18 15:19:26,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:26,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:26,364 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:26,366 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:26,376 INFO L259 McrAutomatonBuilder]: Finished intersection with 69 states and 125 transitions. [2020-04-18 15:19:26,376 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:26,564 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:19:26,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:26,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2020-04-18 15:19:26,565 INFO L87 Difference]: Start difference. First operand 3755 states and 9942 transitions. Second operand 7 states. [2020-04-18 15:19:26,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:26,626 INFO L93 Difference]: Finished difference Result 5235 states and 13539 transitions. [2020-04-18 15:19:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 13539 transitions. [2020-04-18 15:19:26,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:26,640 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [298602948] [2020-04-18 15:19:26,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:26,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:19:26,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [298602948] [2020-04-18 15:19:26,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 15:19:26,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:26,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 15:19:26,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2020-04-18 15:19:26,642 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 22 states. [2020-04-18 15:19:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:27,248 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-04-18 15:19:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 15:19:27,249 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 20 [2020-04-18 15:19:27,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:27,249 INFO L225 Difference]: With dead ends: 70 [2020-04-18 15:19:27,250 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:19:27,251 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=411, Invalid=2039, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 15:19:27,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:19:27,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:19:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:19:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:19:27,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-04-18 15:19:27,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:27,253 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:19:27,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 15:19:27,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:19:27,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:27,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:19:27 BasicIcfg [2020-04-18 15:19:27,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:19:27,259 INFO L168 Benchmark]: Toolchain (without parser) took 11666.81 ms. Allocated memory was 145.2 MB in the beginning and 363.3 MB in the end (delta: 218.1 MB). Free memory was 102.1 MB in the beginning and 157.2 MB in the end (delta: -55.1 MB). Peak memory consumption was 163.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:19:27,259 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 15:19:27,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 852.23 ms. Allocated memory was 145.2 MB in the beginning and 200.3 MB in the end (delta: 55.1 MB). Free memory was 100.2 MB in the beginning and 154.9 MB in the end (delta: -54.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:19:27,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.08 ms. Allocated memory is still 200.3 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:19:27,261 INFO L168 Benchmark]: Boogie Preprocessor took 60.27 ms. Allocated memory is still 200.3 MB. Free memory was 152.8 MB in the beginning and 151.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:19:27,261 INFO L168 Benchmark]: RCFGBuilder took 486.46 ms. Allocated memory is still 200.3 MB. Free memory was 151.4 MB in the beginning and 126.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:19:27,262 INFO L168 Benchmark]: TraceAbstraction took 10157.22 ms. Allocated memory was 200.3 MB in the beginning and 363.3 MB in the end (delta: 163.1 MB). Free memory was 126.9 MB in the beginning and 157.2 MB in the end (delta: -30.3 MB). Peak memory consumption was 132.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:19:27,264 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 852.23 ms. Allocated memory was 145.2 MB in the beginning and 200.3 MB in the end (delta: 55.1 MB). Free memory was 100.2 MB in the beginning and 154.9 MB in the end (delta: -54.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 84.08 ms. Allocated memory is still 200.3 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.27 ms. Allocated memory is still 200.3 MB. Free memory was 152.8 MB in the beginning and 151.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.46 ms. Allocated memory is still 200.3 MB. Free memory was 151.4 MB in the beginning and 126.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10157.22 ms. Allocated memory was 200.3 MB in the beginning and 363.3 MB in the end (delta: 163.1 MB). Free memory was 126.9 MB in the beginning and 157.2 MB in the end (delta: -30.3 MB). Peak memory consumption was 132.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 92 ProgramPointsBefore, 38 ProgramPointsAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 944 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3093 CheckedPairsTotal, 65 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 217 SDtfs, 750 SDslu, 813 SDs, 0 SdLazy, 649 SolverSat, 217 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 683 GetRequests, 512 SyntacticMatches, 4 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...