/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/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 14:59:40,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 14:59:40,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 14:59:40,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 14:59:40,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 14:59:40,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 14:59:40,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 14:59:40,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 14:59:40,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 14:59:40,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 14:59:40,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 14:59:40,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 14:59:40,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 14:59:40,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 14:59:40,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 14:59:40,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 14:59:40,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 14:59:40,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 14:59:40,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 14:59:40,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 14:59:40,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 14:59:40,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 14:59:40,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 14:59:40,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 14:59:40,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 14:59:40,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 14:59:40,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 14:59:40,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 14:59:40,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 14:59:40,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 14:59:40,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 14:59:40,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 14:59:40,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 14:59:40,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 14:59:40,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 14:59:40,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 14:59:40,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 14:59:40,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 14:59:40,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 14:59:40,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 14:59:40,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 14:59:40,625 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 14:59:40,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 14:59:40,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 14:59:40,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 14:59:40,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 14:59:40,655 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 14:59:40,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 14:59:40,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 14:59:40,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 14:59:40,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 14:59:40,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 14:59:40,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 14:59:40,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 14:59:40,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 14:59:40,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 14:59:40,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 14:59:40,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 14:59:40,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 14:59:40,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 14:59:40,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 14:59:40,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 14:59:40,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 14:59:40,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 14:59:40,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 14:59:40,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 14:59:40,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 14:59:40,660 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 14:59:40,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 14:59:40,660 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 14:59:40,661 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 14:59:40,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 14:59:40,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 14:59:40,950 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 14:59:40,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 14:59:40,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 14:59:40,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 14:59:40,969 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 14:59:40,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-04-18 14:59:41,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d43b7df5a/7af7da8eb9bd42b18311c266973bd69e/FLAG6307f9a95 [2020-04-18 14:59:41,572 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 14:59:41,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-04-18 14:59:41,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d43b7df5a/7af7da8eb9bd42b18311c266973bd69e/FLAG6307f9a95 [2020-04-18 14:59:41,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d43b7df5a/7af7da8eb9bd42b18311c266973bd69e [2020-04-18 14:59:41,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 14:59:41,912 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 14:59:41,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 14:59:41,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 14:59:41,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 14:59:41,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:59:41" (1/1) ... [2020-04-18 14:59:41,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10143938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:41, skipping insertion in model container [2020-04-18 14:59:41,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:59:41" (1/1) ... [2020-04-18 14:59:41,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 14:59:41,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 14:59:42,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 14:59:42,502 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 14:59:42,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 14:59:42,636 INFO L208 MainTranslator]: Completed translation [2020-04-18 14:59:42,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42 WrapperNode [2020-04-18 14:59:42,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 14:59:42,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 14:59:42,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 14:59:42,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 14:59:42,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42" (1/1) ... [2020-04-18 14:59:42,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42" (1/1) ... [2020-04-18 14:59:42,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 14:59:42,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 14:59:42,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 14:59:42,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 14:59:42,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42" (1/1) ... [2020-04-18 14:59:42,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42" (1/1) ... [2020-04-18 14:59:42,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42" (1/1) ... [2020-04-18 14:59:42,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42" (1/1) ... [2020-04-18 14:59:42,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42" (1/1) ... [2020-04-18 14:59:42,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42" (1/1) ... [2020-04-18 14:59:42,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42" (1/1) ... [2020-04-18 14:59:42,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 14:59:42,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 14:59:42,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 14:59:42,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 14:59:42,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42" (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 14:59:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 14:59:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 14:59:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 14:59:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 14:59:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 14:59:42,799 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 14:59:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 14:59:42,799 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 14:59:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 14:59:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 14:59:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 14:59:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 14:59:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 14:59:42,802 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 14:59:43,191 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 14:59:43,191 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 14:59:43,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:59:43 BoogieIcfgContainer [2020-04-18 14:59:43,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 14:59:43,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 14:59:43,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 14:59:43,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 14:59:43,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:59:41" (1/3) ... [2020-04-18 14:59:43,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cbbcee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:59:43, skipping insertion in model container [2020-04-18 14:59:43,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:59:42" (2/3) ... [2020-04-18 14:59:43,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cbbcee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:59:43, skipping insertion in model container [2020-04-18 14:59:43,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:59:43" (3/3) ... [2020-04-18 14:59:43,209 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-04-18 14:59:43,220 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 14:59:43,221 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 14:59:43,229 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 14:59:43,230 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 14:59:43,258 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,259 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,259 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,259 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,260 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,260 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,261 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,261 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,261 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,261 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,262 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,262 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,262 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,263 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,263 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,263 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,264 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,264 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,268 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,268 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,269 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,269 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,277 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,277 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,278 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,278 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,281 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,281 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,281 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,282 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:59:43,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 14:59:43,315 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 14:59:43,315 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 14:59:43,316 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 14:59:43,316 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 14:59:43,316 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 14:59:43,316 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 14:59:43,316 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 14:59:43,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 14:59:43,332 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 14:59:43,334 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 14:59:43,379 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 14:59:43,380 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 14:59:43,385 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 14:59:43,388 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 14:59:43,409 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 14:59:43,410 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 14:59:43,411 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 14:59:43,413 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 14:59:43,414 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 14:59:44,862 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-04-18 14:59:45,068 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 14:59:45,068 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 14:59:45,072 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 14:59:45,096 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 14:59:45,099 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 14:59:45,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 14:59:45,107 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:59:45,108 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:59:45,108 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:59:45,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:45,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 14:59:45,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:59:45,122 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1553999751] [2020-04-18 14:59:45,138 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:45,150 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 14:59:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 14:59:45,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 14:59:45,153 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:59:45,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:45,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 2 times [2020-04-18 14:59:45,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:45,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475901204] [2020-04-18 14:59:45,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:59:45,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475901204] [2020-04-18 14:59:45,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:45,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 14:59:45,367 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:45,368 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:45,371 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 14:59:45,371 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:45,384 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:59:45,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:59:45,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:59:45,392 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 14:59:45,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:45,396 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 14:59:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 14:59:45,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:59:45,398 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1553999751] [2020-04-18 14:59:45,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:59:45,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 14:59:45,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1553999751] [2020-04-18 14:59:45,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 14:59:45,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:59:45,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:59:45,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:59:45,406 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 14:59:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:45,461 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 14:59:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 14:59:45,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 14:59:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:59:45,489 INFO L225 Difference]: With dead ends: 266 [2020-04-18 14:59:45,490 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 14:59:45,497 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:59:45,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 14:59:45,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 14:59:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 14:59:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 14:59:45,561 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 14:59:45,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:59:45,563 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 14:59:45,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 14:59:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 14:59:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:59:45,565 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:59:45,565 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:59:45,565 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:59:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:45,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-04-18 14:59:45,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:59:45,566 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1620238579] [2020-04-18 14:59:45,567 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:45,567 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 14:59:45,568 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 14:59:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:59:45,568 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:59:45,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:45,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1603434093, now seen corresponding path program 2 times [2020-04-18 14:59:45,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:45,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788826732] [2020-04-18 14:59:45,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:45,632 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 14:59:45,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788826732] [2020-04-18 14:59:45,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:45,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:59:45,634 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:45,634 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:45,636 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 14:59:45,636 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:45,640 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:59:45,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:59:45,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:59:45,641 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-04-18 14:59:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:45,644 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-04-18 14:59:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 14:59:45,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:59:45,645 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:59:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:45,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 3 times [2020-04-18 14:59:45,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:45,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853779185] [2020-04-18 14:59:45,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:45,716 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 14:59:45,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853779185] [2020-04-18 14:59:45,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:45,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:59:45,717 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:45,718 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:45,720 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 14:59:45,720 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:45,731 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:59:45,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:45,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:59:45,732 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-04-18 14:59:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:45,744 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-04-18 14:59:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 14:59:45,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:59:45,745 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1620238579] [2020-04-18 14:59:45,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:59:45,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:59:45,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1620238579] [2020-04-18 14:59:45,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 14:59:45,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:59:45,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:45,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:59:45,747 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 14:59:45,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:45,766 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-04-18 14:59:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 14:59:45,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 14:59:45,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:59:45,769 INFO L225 Difference]: With dead ends: 254 [2020-04-18 14:59:45,769 INFO L226 Difference]: Without dead ends: 190 [2020-04-18 14:59:45,771 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:59:45,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-04-18 14:59:45,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-04-18 14:59:45,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-04-18 14:59:45,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-04-18 14:59:45,789 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-04-18 14:59:45,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:59:45,790 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-04-18 14:59:45,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 14:59:45,790 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-04-18 14:59:45,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:59:45,791 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:59:45,792 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:59:45,792 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:59:45,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:45,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-04-18 14:59:45,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:59:45,793 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [294362902] [2020-04-18 14:59:45,793 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:45,794 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 14:59:45,794 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 14:59:45,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:59:45,795 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:59:45,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:45,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1533941647, now seen corresponding path program 2 times [2020-04-18 14:59:45,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:45,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399108263] [2020-04-18 14:59:45,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:59:45,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399108263] [2020-04-18 14:59:45,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:45,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:59:45,863 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:45,864 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:45,866 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-04-18 14:59:45,866 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:45,870 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:59:45,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:59:45,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:59:45,871 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 14:59:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:45,876 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2020-04-18 14:59:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2020-04-18 14:59:45,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:59:45,880 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:59:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:45,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 3 times [2020-04-18 14:59:45,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:45,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623507598] [2020-04-18 14:59:45,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:46,000 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 14:59:46,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623507598] [2020-04-18 14:59:46,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:46,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:46,004 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:46,005 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:46,009 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 14:59:46,009 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:46,030 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:59:46,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:46,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:59:46,031 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand 4 states. [2020-04-18 14:59:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:46,049 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 14:59:46,049 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 14:59:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:59:46,050 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:59:46,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:46,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1834533405, now seen corresponding path program 4 times [2020-04-18 14:59:46,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:46,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452960216] [2020-04-18 14:59:46,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:46,138 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 14:59:46,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452960216] [2020-04-18 14:59:46,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:46,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:46,139 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:46,141 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:46,143 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 15 transitions. [2020-04-18 14:59:46,143 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:46,154 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:59:46,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:46,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:59:46,155 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 4 states. [2020-04-18 14:59:46,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:46,174 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 14:59:46,174 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 14:59:46,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:59:46,175 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [294362902] [2020-04-18 14:59:46,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:59:46,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 14:59:46,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [294362902] [2020-04-18 14:59:46,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 14:59:46,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:59:46,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:59:46,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:59:46,177 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 6 states. [2020-04-18 14:59:46,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:46,269 INFO L93 Difference]: Finished difference Result 262 states and 670 transitions. [2020-04-18 14:59:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 14:59:46,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 14:59:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:59:46,272 INFO L225 Difference]: With dead ends: 262 [2020-04-18 14:59:46,272 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 14:59:46,273 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-04-18 14:59:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 14:59:46,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2020-04-18 14:59:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-18 14:59:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-04-18 14:59:46,309 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-04-18 14:59:46,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:59:46,309 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-04-18 14:59:46,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 14:59:46,309 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-04-18 14:59:46,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:59:46,314 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:59:46,314 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:59:46,314 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:59:46,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:46,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-04-18 14:59:46,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:59:46,315 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1243386663] [2020-04-18 14:59:46,316 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:46,319 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 68 transitions. [2020-04-18 14:59:46,319 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 14:59:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:59:46,320 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:59:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:46,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1026904052, now seen corresponding path program 2 times [2020-04-18 14:59:46,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:46,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818486526] [2020-04-18 14:59:46,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:46,385 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 14:59:46,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818486526] [2020-04-18 14:59:46,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:46,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:59:46,386 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:46,387 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:46,390 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-04-18 14:59:46,390 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:46,399 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:59:46,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:59:46,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:59:46,400 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-04-18 14:59:46,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:46,405 INFO L93 Difference]: Finished difference Result 40 states and 70 transitions. [2020-04-18 14:59:46,405 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 70 transitions. [2020-04-18 14:59:46,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:59:46,405 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:59:46,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:46,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 3 times [2020-04-18 14:59:46,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:46,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612656198] [2020-04-18 14:59:46,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:46,456 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 14:59:46,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612656198] [2020-04-18 14:59:46,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:46,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:59:46,457 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:46,458 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:46,462 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 14:59:46,464 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:46,531 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 14:59:46,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:46,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:59:46,534 INFO L87 Difference]: Start difference. First operand 40 states and 70 transitions. Second operand 4 states. [2020-04-18 14:59:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:46,559 INFO L93 Difference]: Finished difference Result 44 states and 72 transitions. [2020-04-18 14:59:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2020-04-18 14:59:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:59:46,560 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:59:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:46,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1026335642, now seen corresponding path program 4 times [2020-04-18 14:59:46,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:46,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565771136] [2020-04-18 14:59:46,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:46,617 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 14:59:46,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565771136] [2020-04-18 14:59:46,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:46,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:46,618 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:46,619 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:46,624 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 34 transitions. [2020-04-18 14:59:46,624 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:46,636 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 14:59:46,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:46,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:59:46,638 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand 4 states. [2020-04-18 14:59:46,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:46,657 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2020-04-18 14:59:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 74 transitions. [2020-04-18 14:59:46,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:59:46,658 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1243386663] [2020-04-18 14:59:46,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:59:46,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 14:59:46,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1243386663] [2020-04-18 14:59:46,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 14:59:46,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:59:46,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:59:46,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:59:46,660 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 6 states. [2020-04-18 14:59:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:46,725 INFO L93 Difference]: Finished difference Result 198 states and 492 transitions. [2020-04-18 14:59:46,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 14:59:46,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-04-18 14:59:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:59:46,727 INFO L225 Difference]: With dead ends: 198 [2020-04-18 14:59:46,727 INFO L226 Difference]: Without dead ends: 72 [2020-04-18 14:59:46,727 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 14:59:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-18 14:59:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-18 14:59:46,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-18 14:59:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-04-18 14:59:46,740 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-04-18 14:59:46,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:59:46,743 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-04-18 14:59:46,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 14:59:46,743 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-04-18 14:59:46,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:59:46,744 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:59:46,744 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:59:46,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:59:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:46,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-04-18 14:59:46,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:59:46,745 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [870520644] [2020-04-18 14:59:46,746 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:46,747 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 14:59:46,748 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 14:59:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:59:46,749 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:59:46,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:46,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1769254876, now seen corresponding path program 2 times [2020-04-18 14:59:46,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:46,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658397087] [2020-04-18 14:59:46,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:46,786 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 14:59:46,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658397087] [2020-04-18 14:59:46,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:46,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:59:46,787 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:46,788 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:46,791 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 47 transitions. [2020-04-18 14:59:46,791 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:46,796 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:59:46,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:59:46,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:59:46,797 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-04-18 14:59:46,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:46,801 INFO L93 Difference]: Finished difference Result 78 states and 176 transitions. [2020-04-18 14:59:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 176 transitions. [2020-04-18 14:59:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:59:46,802 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:59:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:46,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1770654496, now seen corresponding path program 3 times [2020-04-18 14:59:46,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:46,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92559494] [2020-04-18 14:59:46,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:46,859 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 14:59:46,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92559494] [2020-04-18 14:59:46,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:46,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:46,861 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:46,862 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:46,867 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-04-18 14:59:46,867 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:46,951 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 14:59:46,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:59:46,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:59:46,952 INFO L87 Difference]: Start difference. First operand 78 states and 176 transitions. Second operand 6 states. [2020-04-18 14:59:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:47,002 INFO L93 Difference]: Finished difference Result 104 states and 208 transitions. [2020-04-18 14:59:47,002 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 208 transitions. [2020-04-18 14:59:47,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:59:47,003 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:59:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:47,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1770637276, now seen corresponding path program 4 times [2020-04-18 14:59:47,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:47,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748737508] [2020-04-18 14:59:47,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:47,037 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 14:59:47,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748737508] [2020-04-18 14:59:47,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:47,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:47,038 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:47,039 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:47,042 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 65 transitions. [2020-04-18 14:59:47,043 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:47,090 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 14:59:47,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:47,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 14:59:47,091 INFO L87 Difference]: Start difference. First operand 104 states and 208 transitions. Second operand 4 states. [2020-04-18 14:59:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:47,112 INFO L93 Difference]: Finished difference Result 109 states and 210 transitions. [2020-04-18 14:59:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 210 transitions. [2020-04-18 14:59:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:59:47,113 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:59:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:47,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 5 times [2020-04-18 14:59:47,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:47,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416618517] [2020-04-18 14:59:47,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:47,166 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 14:59:47,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416618517] [2020-04-18 14:59:47,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:47,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:59:47,167 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:47,168 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:47,171 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-04-18 14:59:47,171 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:47,202 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:59:47,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:47,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:59:47,203 INFO L87 Difference]: Start difference. First operand 109 states and 210 transitions. Second operand 4 states. [2020-04-18 14:59:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:47,215 INFO L93 Difference]: Finished difference Result 109 states and 210 transitions. [2020-04-18 14:59:47,216 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 210 transitions. [2020-04-18 14:59:47,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:59:47,217 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [870520644] [2020-04-18 14:59:47,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:59:47,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:59:47,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [870520644] [2020-04-18 14:59:47,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 14:59:47,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:59:47,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 14:59:47,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 14:59:47,220 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 11 states. [2020-04-18 14:59:47,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:47,556 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-04-18 14:59:47,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 14:59:47,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-04-18 14:59:47,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:59:47,557 INFO L225 Difference]: With dead ends: 85 [2020-04-18 14:59:47,558 INFO L226 Difference]: Without dead ends: 61 [2020-04-18 14:59:47,558 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-04-18 14:59:47,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-18 14:59:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-18 14:59:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-18 14:59:47,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-04-18 14:59:47,564 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-04-18 14:59:47,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:59:47,565 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-04-18 14:59:47,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 14:59:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-04-18 14:59:47,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:59:47,566 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:59:47,566 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:59:47,567 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:59:47,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:47,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1873051802, now seen corresponding path program 1 times [2020-04-18 14:59:47,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:59:47,569 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2142655318] [2020-04-18 14:59:47,570 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:47,572 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 230 transitions. [2020-04-18 14:59:47,573 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 14:59:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:59:47,573 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:59:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:47,574 INFO L82 PathProgramCache]: Analyzing trace with hash 971526634, now seen corresponding path program 2 times [2020-04-18 14:59:47,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:47,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100640918] [2020-04-18 14:59:47,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:47,599 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 14:59:47,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100640918] [2020-04-18 14:59:47,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:47,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:59:47,600 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:47,602 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:47,606 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-04-18 14:59:47,606 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:47,612 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:59:47,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:59:47,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:59:47,614 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2020-04-18 14:59:47,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:47,618 INFO L93 Difference]: Finished difference Result 102 states and 240 transitions. [2020-04-18 14:59:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 240 transitions. [2020-04-18 14:59:47,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:59:47,619 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:59:47,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:47,619 INFO L82 PathProgramCache]: Analyzing trace with hash 970127014, now seen corresponding path program 3 times [2020-04-18 14:59:47,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:47,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428260155] [2020-04-18 14:59:47,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:47,657 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 14:59:47,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428260155] [2020-04-18 14:59:47,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:47,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:47,658 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:47,659 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:47,664 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 86 transitions. [2020-04-18 14:59:47,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:47,738 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 14:59:47,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:59:47,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:59:47,739 INFO L87 Difference]: Start difference. First operand 102 states and 240 transitions. Second operand 6 states. [2020-04-18 14:59:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:47,790 INFO L93 Difference]: Finished difference Result 148 states and 314 transitions. [2020-04-18 14:59:47,790 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 314 transitions. [2020-04-18 14:59:47,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:59:47,792 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:59:47,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:47,792 INFO L82 PathProgramCache]: Analyzing trace with hash 970144234, now seen corresponding path program 4 times [2020-04-18 14:59:47,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:47,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537709949] [2020-04-18 14:59:47,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:47,819 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 14:59:47,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537709949] [2020-04-18 14:59:47,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:47,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:47,820 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:47,821 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:47,827 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 80 transitions. [2020-04-18 14:59:47,828 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:47,863 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 14:59:47,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:47,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 14:59:47,864 INFO L87 Difference]: Start difference. First operand 148 states and 314 transitions. Second operand 4 states. [2020-04-18 14:59:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:47,884 INFO L93 Difference]: Finished difference Result 158 states and 323 transitions. [2020-04-18 14:59:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 323 transitions. [2020-04-18 14:59:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:59:47,885 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:59:47,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:47,886 INFO L82 PathProgramCache]: Analyzing trace with hash 970142824, now seen corresponding path program 5 times [2020-04-18 14:59:47,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:47,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460720205] [2020-04-18 14:59:47,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:47,930 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 14:59:47,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460720205] [2020-04-18 14:59:47,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:47,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:59:47,931 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:47,933 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:47,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-04-18 14:59:47,937 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:47,962 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:59:47,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:47,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:59:47,963 INFO L87 Difference]: Start difference. First operand 158 states and 323 transitions. Second operand 4 states. [2020-04-18 14:59:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:47,982 INFO L93 Difference]: Finished difference Result 181 states and 352 transitions. [2020-04-18 14:59:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 352 transitions. [2020-04-18 14:59:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:59:47,983 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 14:59:47,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:47,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1873051802, now seen corresponding path program 6 times [2020-04-18 14:59:47,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:47,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550380782] [2020-04-18 14:59:47,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:59:48,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550380782] [2020-04-18 14:59:48,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:48,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:48,033 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:48,035 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:48,041 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 55 transitions. [2020-04-18 14:59:48,041 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:48,092 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:59:48,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:59:48,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-04-18 14:59:48,093 INFO L87 Difference]: Start difference. First operand 181 states and 352 transitions. Second operand 6 states. [2020-04-18 14:59:48,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:48,117 INFO L93 Difference]: Finished difference Result 181 states and 352 transitions. [2020-04-18 14:59:48,118 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 352 transitions. [2020-04-18 14:59:48,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:59:48,120 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2142655318] [2020-04-18 14:59:48,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:59:48,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 14:59:48,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2142655318] [2020-04-18 14:59:48,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 14:59:48,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:59:48,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 14:59:48,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-04-18 14:59:48,121 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 13 states. [2020-04-18 14:59:48,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:48,454 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-04-18 14:59:48,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 14:59:48,455 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-04-18 14:59:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:59:48,456 INFO L225 Difference]: With dead ends: 62 [2020-04-18 14:59:48,456 INFO L226 Difference]: Without dead ends: 47 [2020-04-18 14:59:48,457 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2020-04-18 14:59:48,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-04-18 14:59:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-04-18 14:59:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-04-18 14:59:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-04-18 14:59:48,460 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-04-18 14:59:48,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:59:48,460 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-04-18 14:59:48,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 14:59:48,460 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-18 14:59:48,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:59:48,461 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:59:48,461 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:59:48,461 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:59:48,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:48,462 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-04-18 14:59:48,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:59:48,462 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1143634588] [2020-04-18 14:59:48,463 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:48,465 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 300 transitions. [2020-04-18 14:59:48,467 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-04-18 14:59:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:59:48,468 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:59:48,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:48,468 INFO L82 PathProgramCache]: Analyzing trace with hash 52554789, now seen corresponding path program 2 times [2020-04-18 14:59:48,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:48,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33031703] [2020-04-18 14:59:48,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:48,498 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 14:59:48,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33031703] [2020-04-18 14:59:48,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:48,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:59:48,500 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:48,502 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:48,507 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 57 transitions. [2020-04-18 14:59:48,508 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:48,513 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:59:48,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:59:48,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:59:48,528 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-04-18 14:59:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:48,542 INFO L93 Difference]: Finished difference Result 134 states and 328 transitions. [2020-04-18 14:59:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 328 transitions. [2020-04-18 14:59:48,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:59:48,542 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:59:48,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:48,543 INFO L82 PathProgramCache]: Analyzing trace with hash 9166569, now seen corresponding path program 3 times [2020-04-18 14:59:48,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:48,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112703454] [2020-04-18 14:59:48,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:48,581 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 14:59:48,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112703454] [2020-04-18 14:59:48,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:48,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:59:48,583 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:48,584 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:48,588 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 89 transitions. [2020-04-18 14:59:48,589 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:48,644 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 14:59:48,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:59:48,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:59:48,645 INFO L87 Difference]: Start difference. First operand 134 states and 328 transitions. Second operand 6 states. [2020-04-18 14:59:48,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:48,686 INFO L93 Difference]: Finished difference Result 206 states and 460 transitions. [2020-04-18 14:59:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 460 transitions. [2020-04-18 14:59:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:59:48,687 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:59:48,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:48,688 INFO L82 PathProgramCache]: Analyzing trace with hash 9700389, now seen corresponding path program 4 times [2020-04-18 14:59:48,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:48,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660716294] [2020-04-18 14:59:48,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:48,710 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 14:59:48,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660716294] [2020-04-18 14:59:48,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:48,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:48,711 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:48,712 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:48,717 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 87 transitions. [2020-04-18 14:59:48,717 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:48,747 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 14:59:48,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:48,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 14:59:48,747 INFO L87 Difference]: Start difference. First operand 206 states and 460 transitions. Second operand 4 states. [2020-04-18 14:59:48,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:48,771 INFO L93 Difference]: Finished difference Result 222 states and 478 transitions. [2020-04-18 14:59:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 478 transitions. [2020-04-18 14:59:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:59:48,772 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:59:48,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:48,773 INFO L82 PathProgramCache]: Analyzing trace with hash 9656679, now seen corresponding path program 5 times [2020-04-18 14:59:48,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:48,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727791632] [2020-04-18 14:59:48,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:48,806 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 14:59:48,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727791632] [2020-04-18 14:59:48,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:48,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:48,807 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:48,809 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:48,812 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 67 transitions. [2020-04-18 14:59:48,813 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:48,833 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:59:48,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:48,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:59:48,834 INFO L87 Difference]: Start difference. First operand 222 states and 478 transitions. Second operand 4 states. [2020-04-18 14:59:48,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:48,868 INFO L93 Difference]: Finished difference Result 282 states and 566 transitions. [2020-04-18 14:59:48,868 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 566 transitions. [2020-04-18 14:59:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:59:48,869 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 14:59:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:48,869 INFO L82 PathProgramCache]: Analyzing trace with hash 2064936489, now seen corresponding path program 6 times [2020-04-18 14:59:48,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:48,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279192778] [2020-04-18 14:59:48,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:48,917 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 14:59:48,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279192778] [2020-04-18 14:59:48,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:48,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:59:48,918 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:48,919 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:48,922 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 60 transitions. [2020-04-18 14:59:48,923 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:48,967 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:59:48,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:59:48,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-04-18 14:59:48,968 INFO L87 Difference]: Start difference. First operand 282 states and 566 transitions. Second operand 6 states. [2020-04-18 14:59:49,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:49,026 INFO L93 Difference]: Finished difference Result 290 states and 572 transitions. [2020-04-18 14:59:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 572 transitions. [2020-04-18 14:59:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:59:49,027 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 14:59:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:49,029 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 7 times [2020-04-18 14:59:49,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:49,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803387602] [2020-04-18 14:59:49,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:49,099 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 14:59:49,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803387602] [2020-04-18 14:59:49,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:49,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:59:49,100 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:49,101 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:49,105 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 54 transitions. [2020-04-18 14:59:49,105 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:49,148 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 14:59:49,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 14:59:49,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-04-18 14:59:49,148 INFO L87 Difference]: Start difference. First operand 290 states and 572 transitions. Second operand 7 states. [2020-04-18 14:59:49,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:49,211 INFO L93 Difference]: Finished difference Result 290 states and 572 transitions. [2020-04-18 14:59:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 572 transitions. [2020-04-18 14:59:49,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:59:49,213 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1143634588] [2020-04-18 14:59:49,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:59:49,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 14:59:49,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1143634588] [2020-04-18 14:59:49,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 14:59:49,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:59:49,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 14:59:49,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-04-18 14:59:49,214 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 14 states. [2020-04-18 14:59:49,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:49,511 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-04-18 14:59:49,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 14:59:49,512 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-04-18 14:59:49,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:59:49,513 INFO L225 Difference]: With dead ends: 44 [2020-04-18 14:59:49,513 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 14:59:49,514 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-04-18 14:59:49,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 14:59:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 14:59:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 14:59:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-04-18 14:59:49,517 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-04-18 14:59:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:59:49,517 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-04-18 14:59:49,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 14:59:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-04-18 14:59:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:59:49,518 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:59:49,518 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:59:49,518 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:59:49,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:49,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-04-18 14:59:49,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:59:49,519 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [931163435] [2020-04-18 14:59:49,519 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:49,523 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 14:59:49,525 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 14:59:49,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:59:49,526 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:59:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:49,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1057896634, now seen corresponding path program 2 times [2020-04-18 14:59:49,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:49,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774264540] [2020-04-18 14:59:49,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:49,553 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 14:59:49,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774264540] [2020-04-18 14:59:49,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:49,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:59:49,554 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:49,555 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:49,559 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 75 transitions. [2020-04-18 14:59:49,559 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:49,566 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:59:49,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:59:49,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:59:49,567 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 14:59:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:49,571 INFO L93 Difference]: Finished difference Result 266 states and 720 transitions. [2020-04-18 14:59:49,585 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 720 transitions. [2020-04-18 14:59:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:59:49,586 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:59:49,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:49,587 INFO L82 PathProgramCache]: Analyzing trace with hash -508157784, now seen corresponding path program 3 times [2020-04-18 14:59:49,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:49,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660932338] [2020-04-18 14:59:49,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:49,614 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 14:59:49,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660932338] [2020-04-18 14:59:49,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:49,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:59:49,615 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:49,616 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:49,623 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 136 transitions. [2020-04-18 14:59:49,623 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:49,664 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 14:59:49,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:59:49,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:59:49,665 INFO L87 Difference]: Start difference. First operand 266 states and 720 transitions. Second operand 6 states. [2020-04-18 14:59:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:49,712 INFO L93 Difference]: Finished difference Result 398 states and 1018 transitions. [2020-04-18 14:59:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1018 transitions. [2020-04-18 14:59:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:59:49,713 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:59:49,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:49,714 INFO L82 PathProgramCache]: Analyzing trace with hash 219088266, now seen corresponding path program 4 times [2020-04-18 14:59:49,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:49,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192649338] [2020-04-18 14:59:49,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:49,747 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 14:59:49,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192649338] [2020-04-18 14:59:49,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:49,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:59:49,748 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:49,749 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:49,755 INFO L259 McrAutomatonBuilder]: Finished intersection with 55 states and 93 transitions. [2020-04-18 14:59:49,755 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:49,908 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 14:59:49,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:59:49,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 14:59:49,908 INFO L87 Difference]: Start difference. First operand 398 states and 1018 transitions. Second operand 6 states. [2020-04-18 14:59:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:49,989 INFO L93 Difference]: Finished difference Result 670 states and 1626 transitions. [2020-04-18 14:59:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1626 transitions. [2020-04-18 14:59:49,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:59:49,992 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:59:49,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:49,992 INFO L82 PathProgramCache]: Analyzing trace with hash 732089286, now seen corresponding path program 5 times [2020-04-18 14:59:49,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:49,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337209995] [2020-04-18 14:59:49,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:50,049 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 14:59:50,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337209995] [2020-04-18 14:59:50,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:50,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:50,050 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:50,051 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:50,058 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 85 transitions. [2020-04-18 14:59:50,058 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:50,097 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 14:59:50,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:50,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-04-18 14:59:50,098 INFO L87 Difference]: Start difference. First operand 670 states and 1626 transitions. Second operand 4 states. [2020-04-18 14:59:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:50,120 INFO L93 Difference]: Finished difference Result 750 states and 1764 transitions. [2020-04-18 14:59:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1764 transitions. [2020-04-18 14:59:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:59:50,123 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 14:59:50,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:50,123 INFO L82 PathProgramCache]: Analyzing trace with hash 690083976, now seen corresponding path program 6 times [2020-04-18 14:59:50,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:50,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745220625] [2020-04-18 14:59:50,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:50,173 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 14:59:50,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745220625] [2020-04-18 14:59:50,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:50,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:59:50,174 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:50,175 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:50,180 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 67 transitions. [2020-04-18 14:59:50,180 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:50,210 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:59:50,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:59:50,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-04-18 14:59:50,211 INFO L87 Difference]: Start difference. First operand 750 states and 1764 transitions. Second operand 4 states. [2020-04-18 14:59:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:50,249 INFO L93 Difference]: Finished difference Result 1060 states and 2313 transitions. [2020-04-18 14:59:50,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 2313 transitions. [2020-04-18 14:59:50,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:59:50,252 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 14:59:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:50,252 INFO L82 PathProgramCache]: Analyzing trace with hash 129025226, now seen corresponding path program 7 times [2020-04-18 14:59:50,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:50,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373891246] [2020-04-18 14:59:50,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:50,286 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 14:59:50,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373891246] [2020-04-18 14:59:50,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:50,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:59:50,287 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:50,288 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:50,293 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 58 transitions. [2020-04-18 14:59:50,293 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:50,346 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:59:50,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:59:50,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2020-04-18 14:59:50,346 INFO L87 Difference]: Start difference. First operand 1060 states and 2313 transitions. Second operand 6 states. [2020-04-18 14:59:50,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:50,430 INFO L93 Difference]: Finished difference Result 1144 states and 2411 transitions. [2020-04-18 14:59:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 2411 transitions. [2020-04-18 14:59:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:59:50,433 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 14:59:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:59:50,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1691795752, now seen corresponding path program 8 times [2020-04-18 14:59:50,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:59:50,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199595313] [2020-04-18 14:59:50,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:59:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:59:50,482 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 14:59:50,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199595313] [2020-04-18 14:59:50,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:59:50,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 14:59:50,483 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:59:50,484 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:59:50,488 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 56 transitions. [2020-04-18 14:59:50,488 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:59:50,540 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 14:59:50,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 14:59:50,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-04-18 14:59:50,541 INFO L87 Difference]: Start difference. First operand 1144 states and 2411 transitions. Second operand 7 states. [2020-04-18 14:59:50,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:50,663 INFO L93 Difference]: Finished difference Result 1152 states and 2415 transitions. [2020-04-18 14:59:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 2415 transitions. [2020-04-18 14:59:50,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:59:50,667 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [931163435] [2020-04-18 14:59:50,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:59:50,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 14:59:50,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [931163435] [2020-04-18 14:59:50,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 14:59:50,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:59:50,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 14:59:50,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-04-18 14:59:50,668 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 18 states. [2020-04-18 14:59:51,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:59:51,081 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-04-18 14:59:51,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 14:59:51,082 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2020-04-18 14:59:51,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:59:51,082 INFO L225 Difference]: With dead ends: 37 [2020-04-18 14:59:51,082 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 14:59:51,083 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 14:59:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 14:59:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 14:59:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 14:59:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 14:59:51,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 14:59:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:59:51,084 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 14:59:51,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 14:59:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 14:59:51,085 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:59:51,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:59:51 BasicIcfg [2020-04-18 14:59:51,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 14:59:51,094 INFO L168 Benchmark]: Toolchain (without parser) took 9200.98 ms. Allocated memory was 146.3 MB in the beginning and 305.7 MB in the end (delta: 159.4 MB). Free memory was 102.4 MB in the beginning and 245.5 MB in the end (delta: -143.1 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-04-18 14:59:51,101 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 14:59:51,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.55 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 100.4 MB in the beginning and 161.8 MB in the end (delta: -61.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-18 14:59:51,105 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.66 ms. Allocated memory is still 205.0 MB. Free memory was 161.8 MB in the beginning and 159.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-18 14:59:51,105 INFO L168 Benchmark]: Boogie Preprocessor took 28.16 ms. Allocated memory is still 205.0 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 14:59:51,106 INFO L168 Benchmark]: RCFGBuilder took 471.83 ms. Allocated memory is still 205.0 MB. Free memory was 157.9 MB in the beginning and 135.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 14:59:51,106 INFO L168 Benchmark]: TraceAbstraction took 7888.81 ms. Allocated memory was 205.0 MB in the beginning and 305.7 MB in the end (delta: 100.7 MB). Free memory was 135.6 MB in the beginning and 245.5 MB in the end (delta: -109.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 14:59:51,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 722.55 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 100.4 MB in the beginning and 161.8 MB in the end (delta: -61.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.66 ms. Allocated memory is still 205.0 MB. Free memory was 161.8 MB in the beginning and 159.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.16 ms. Allocated memory is still 205.0 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.83 ms. Allocated memory is still 205.0 MB. Free memory was 157.9 MB in the beginning and 135.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7888.81 ms. Allocated memory was 205.0 MB in the beginning and 305.7 MB in the end (delta: 100.7 MB). Free memory was 135.6 MB in the beginning and 245.5 MB in the end (delta: -109.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 667 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 149 SDtfs, 246 SDslu, 402 SDs, 0 SdLazy, 654 SolverSat, 133 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 617 GetRequests, 491 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 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...