/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:19:38,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:19:38,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:19:38,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:19:38,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:19:38,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:19:38,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:19:38,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:19:38,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:19:38,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:19:38,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:19:38,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:19:38,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:19:38,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:19:38,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:19:38,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:19:38,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:19:38,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:19:38,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:19:38,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:19:38,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:19:38,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:19:38,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:19:38,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:19:38,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:19:38,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:19:38,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:19:38,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:19:38,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:19:38,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:19:38,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:19:38,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:19:38,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:19:38,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:19:38,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:19:38,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:19:38,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:19:38,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:19:38,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:19:38,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:19:38,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:19:38,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:19:38,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:19:38,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:19:38,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:19:38,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:19:38,732 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:19:38,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:19:38,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:19:38,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:19:38,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:19:38,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:19:38,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:19:38,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:19:38,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:19:38,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:19:38,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:19:38,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:19:38,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:19:38,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:19:38,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:19:38,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:19:38,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:19:38,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:19:38,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:19:38,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:19:38,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:19:38,738 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:19:38,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:19:38,738 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:19:38,738 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:19:38,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:19:38,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:19:39,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:19:39,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:19:39,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:19:39,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:19:39,053 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:19:39,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-04-18 15:19:39,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9783a4e0/6d1fb0d864ef419495bed5e348b79137/FLAG230c5390a [2020-04-18 15:19:39,658 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:19:39,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-04-18 15:19:39,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9783a4e0/6d1fb0d864ef419495bed5e348b79137/FLAG230c5390a [2020-04-18 15:19:39,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9783a4e0/6d1fb0d864ef419495bed5e348b79137 [2020-04-18 15:19:39,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:19:39,985 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:19:39,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:19:39,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:19:39,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:19:39,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:19:39" (1/1) ... [2020-04-18 15:19:39,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6b4f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:39, skipping insertion in model container [2020-04-18 15:19:39,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:19:39" (1/1) ... [2020-04-18 15:19:40,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:19:40,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:19:40,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:19:40,543 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:19:40,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:19:40,663 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:19:40,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40 WrapperNode [2020-04-18 15:19:40,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:19:40,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:19:40,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:19:40,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:19:40,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40" (1/1) ... [2020-04-18 15:19:40,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40" (1/1) ... [2020-04-18 15:19:40,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:19:40,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:19:40,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:19:40,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:19:40,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40" (1/1) ... [2020-04-18 15:19:40,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40" (1/1) ... [2020-04-18 15:19:40,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40" (1/1) ... [2020-04-18 15:19:40,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40" (1/1) ... [2020-04-18 15:19:40,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40" (1/1) ... [2020-04-18 15:19:40,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40" (1/1) ... [2020-04-18 15:19:40,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40" (1/1) ... [2020-04-18 15:19:40,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:19:40,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:19:40,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:19:40,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:19:40,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:19:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:19:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:19:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:19:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:19:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:19:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:19:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:19:40,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:19:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:19:40,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:19:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 15:19:40,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 15:19:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:19:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:19:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:19:40,829 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:19:41,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:19:41,240 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:19:41,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:19:41 BoogieIcfgContainer [2020-04-18 15:19:41,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:19:41,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:19:41,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:19:41,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:19:41,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:19:39" (1/3) ... [2020-04-18 15:19:41,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559d8b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:19:41, skipping insertion in model container [2020-04-18 15:19:41,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:40" (2/3) ... [2020-04-18 15:19:41,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559d8b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:19:41, skipping insertion in model container [2020-04-18 15:19:41,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:19:41" (3/3) ... [2020-04-18 15:19:41,263 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_tso.opt.i [2020-04-18 15:19:41,273 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:19:41,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:19:41,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:19:41,282 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:19:41,307 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,308 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,308 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,308 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,309 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,310 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,310 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,311 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,311 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,311 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,312 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,312 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,313 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,313 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,313 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,313 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,313 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,314 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,314 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,314 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,315 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,315 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,315 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,315 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,319 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,320 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,320 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,320 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,329 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,329 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,329 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,329 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,331 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,332 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,332 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,332 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,335 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,336 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,336 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,336 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:41,358 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 15:19:41,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:19:41,373 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:19:41,374 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:19:41,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:19:41,374 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:19:41,374 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:19:41,374 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:19:41,374 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:19:41,392 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-04-18 15:19:41,394 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-04-18 15:19:41,460 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-04-18 15:19:41,461 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:19:41,466 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 15:19:41,469 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-04-18 15:19:41,491 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-04-18 15:19:41,491 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:19:41,492 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 15:19:41,495 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 15:19:41,496 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:19:43,269 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3093 [2020-04-18 15:19:43,269 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2020-04-18 15:19:43,274 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-04-18 15:19:43,331 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-04-18 15:19:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-04-18 15:19:43,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:19:43,354 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:43,355 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:43,356 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:43,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-04-18 15:19:43,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:43,376 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1384840550] [2020-04-18 15:19:43,393 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:43,407 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:19:43,408 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 15:19:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:19:43,411 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:43,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 2 times [2020-04-18 15:19:43,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:43,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70260492] [2020-04-18 15:19:43,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:43,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70260492] [2020-04-18 15:19:43,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:43,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:19:43,686 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:43,687 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:43,691 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:19:43,691 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:43,699 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:19:43,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:19:43,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:19:43,706 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-04-18 15:19:43,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:43,710 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 15:19:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 15:19:43,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:43,711 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1384840550] [2020-04-18 15:19:43,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:43,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:19:43,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1384840550] [2020-04-18 15:19:43,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:19:43,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:43,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:19:43,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:19:43,720 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-04-18 15:19:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:43,766 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-04-18 15:19:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:19:43,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 15:19:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:43,813 INFO L225 Difference]: With dead ends: 670 [2020-04-18 15:19:43,813 INFO L226 Difference]: Without dead ends: 526 [2020-04-18 15:19:43,815 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:19:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-04-18 15:19:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-04-18 15:19:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-04-18 15:19:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-04-18 15:19:43,914 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-04-18 15:19:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:43,915 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-04-18 15:19:43,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:19:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-04-18 15:19:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:19:43,919 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:43,919 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:43,919 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:43,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:43,920 INFO L82 PathProgramCache]: Analyzing trace with hash -2027540211, now seen corresponding path program 1 times [2020-04-18 15:19:43,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:43,920 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1683422032] [2020-04-18 15:19:43,921 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:43,922 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-04-18 15:19:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:19:43,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:19:43,924 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:43,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:43,925 INFO L82 PathProgramCache]: Analyzing trace with hash -2027540211, now seen corresponding path program 2 times [2020-04-18 15:19:43,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:43,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225914811] [2020-04-18 15:19:43,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:44,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225914811] [2020-04-18 15:19:44,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:44,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:44,048 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:44,049 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:44,054 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 15:19:44,054 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:44,236 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:19:44,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:44,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:19:44,237 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 7 states. [2020-04-18 15:19:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:44,256 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2020-04-18 15:19:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2020-04-18 15:19:44,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:44,257 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1683422032] [2020-04-18 15:19:44,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:44,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:19:44,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1683422032] [2020-04-18 15:19:44,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:19:44,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:44,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:44,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:19:44,259 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 7 states. [2020-04-18 15:19:44,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:44,301 INFO L93 Difference]: Finished difference Result 724 states and 2331 transitions. [2020-04-18 15:19:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:19:44,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-04-18 15:19:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:44,306 INFO L225 Difference]: With dead ends: 724 [2020-04-18 15:19:44,306 INFO L226 Difference]: Without dead ends: 412 [2020-04-18 15:19:44,307 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:19:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-04-18 15:19:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-04-18 15:19:44,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-04-18 15:19:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1323 transitions. [2020-04-18 15:19:44,328 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1323 transitions. Word has length 11 [2020-04-18 15:19:44,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:44,328 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 1323 transitions. [2020-04-18 15:19:44,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:19:44,328 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1323 transitions. [2020-04-18 15:19:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:19:44,330 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:44,330 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:44,330 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:44,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:44,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1543893440, now seen corresponding path program 1 times [2020-04-18 15:19:44,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:44,331 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [476280857] [2020-04-18 15:19:44,332 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:44,333 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 40 transitions. [2020-04-18 15:19:44,333 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 15:19:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:19:44,334 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:44,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:44,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1570763120, now seen corresponding path program 2 times [2020-04-18 15:19:44,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:44,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430086631] [2020-04-18 15:19:44,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:44,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430086631] [2020-04-18 15:19:44,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:44,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:44,400 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:44,401 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:44,403 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 15:19:44,404 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:44,488 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:19:44,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:44,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:19:44,489 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2020-04-18 15:19:44,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:44,519 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2020-04-18 15:19:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 42 transitions. [2020-04-18 15:19:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:19:44,521 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:44,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:44,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1543893440, now seen corresponding path program 3 times [2020-04-18 15:19:44,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:44,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192837895] [2020-04-18 15:19:44,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:44,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192837895] [2020-04-18 15:19:44,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:44,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:19:44,596 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:44,598 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:44,600 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-04-18 15:19:44,600 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:44,610 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:19:44,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:19:44,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:19:44,611 INFO L87 Difference]: Start difference. First operand 29 states and 42 transitions. Second operand 3 states. [2020-04-18 15:19:44,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:44,612 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2020-04-18 15:19:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 42 transitions. [2020-04-18 15:19:44,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:44,612 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [476280857] [2020-04-18 15:19:44,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:44,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:19:44,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [476280857] [2020-04-18 15:19:44,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:19:44,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:44,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:19:44,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:19:44,614 INFO L87 Difference]: Start difference. First operand 412 states and 1323 transitions. Second operand 8 states. [2020-04-18 15:19:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:44,676 INFO L93 Difference]: Finished difference Result 394 states and 1254 transitions. [2020-04-18 15:19:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:19:44,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-04-18 15:19:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:44,680 INFO L225 Difference]: With dead ends: 394 [2020-04-18 15:19:44,681 INFO L226 Difference]: Without dead ends: 394 [2020-04-18 15:19:44,681 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:19:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-04-18 15:19:44,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-04-18 15:19:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-04-18 15:19:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1254 transitions. [2020-04-18 15:19:44,696 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1254 transitions. Word has length 12 [2020-04-18 15:19:44,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:44,697 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1254 transitions. [2020-04-18 15:19:44,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:19:44,697 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1254 transitions. [2020-04-18 15:19:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:44,698 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:44,699 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:44,699 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:44,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:44,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1381595750, now seen corresponding path program 1 times [2020-04-18 15:19:44,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:44,700 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1693637840] [2020-04-18 15:19:44,700 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:44,702 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 73 transitions. [2020-04-18 15:19:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-04-18 15:19:44,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:44,703 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:44,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1381595750, now seen corresponding path program 2 times [2020-04-18 15:19:44,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:44,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416548323] [2020-04-18 15:19:44,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:44,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416548323] [2020-04-18 15:19:44,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:44,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:44,763 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:44,764 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:44,768 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 15:19:44,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:44,813 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:19:44,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:44,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:19:44,814 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2020-04-18 15:19:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:44,853 INFO L93 Difference]: Finished difference Result 47 states and 78 transitions. [2020-04-18 15:19:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-18 15:19:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:44,854 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:44,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:44,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1418594390, now seen corresponding path program 3 times [2020-04-18 15:19:44,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:44,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100977933] [2020-04-18 15:19:44,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:44,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100977933] [2020-04-18 15:19:44,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:44,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:44,919 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:44,921 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:44,925 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-04-18 15:19:44,925 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:45,054 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:19:45,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:45,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:19:45,055 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 7 states. [2020-04-18 15:19:45,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:45,092 INFO L93 Difference]: Finished difference Result 48 states and 78 transitions. [2020-04-18 15:19:45,092 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 78 transitions. [2020-04-18 15:19:45,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:45,093 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1693637840] [2020-04-18 15:19:45,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:45,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:19:45,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1693637840] [2020-04-18 15:19:45,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:19:45,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:45,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:19:45,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:19:45,095 INFO L87 Difference]: Start difference. First operand 394 states and 1254 transitions. Second operand 11 states. [2020-04-18 15:19:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:45,177 INFO L93 Difference]: Finished difference Result 652 states and 1957 transitions. [2020-04-18 15:19:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 15:19:45,178 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-04-18 15:19:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:45,181 INFO L225 Difference]: With dead ends: 652 [2020-04-18 15:19:45,181 INFO L226 Difference]: Without dead ends: 340 [2020-04-18 15:19:45,181 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:19:45,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-04-18 15:19:45,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 304. [2020-04-18 15:19:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-04-18 15:19:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 891 transitions. [2020-04-18 15:19:45,191 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 891 transitions. Word has length 13 [2020-04-18 15:19:45,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:45,192 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 891 transitions. [2020-04-18 15:19:45,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:19:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 891 transitions. [2020-04-18 15:19:45,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:45,193 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:45,193 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:45,193 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:45,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:45,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1391724752, now seen corresponding path program 1 times [2020-04-18 15:19:45,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:45,194 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1464587596] [2020-04-18 15:19:45,195 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:45,196 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 82 transitions. [2020-04-18 15:19:45,196 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-04-18 15:19:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:45,197 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:45,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:45,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1418594432, now seen corresponding path program 2 times [2020-04-18 15:19:45,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:45,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410636541] [2020-04-18 15:19:45,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:45,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410636541] [2020-04-18 15:19:45,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:45,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:45,258 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:45,259 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:45,262 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-04-18 15:19:45,263 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:45,356 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:19:45,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:45,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:19:45,356 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 7 states. [2020-04-18 15:19:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:45,381 INFO L93 Difference]: Finished difference Result 48 states and 89 transitions. [2020-04-18 15:19:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2020-04-18 15:19:45,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:19:45,382 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:45,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:45,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1391724752, now seen corresponding path program 3 times [2020-04-18 15:19:45,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:45,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359839729] [2020-04-18 15:19:45,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:45,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359839729] [2020-04-18 15:19:45,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:45,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:45,442 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:45,443 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:45,446 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-04-18 15:19:45,447 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:45,489 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:19:45,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:19:45,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:19:45,490 INFO L87 Difference]: Start difference. First operand 48 states and 89 transitions. Second operand 5 states. [2020-04-18 15:19:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:45,503 INFO L93 Difference]: Finished difference Result 48 states and 89 transitions. [2020-04-18 15:19:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2020-04-18 15:19:45,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:45,504 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1464587596] [2020-04-18 15:19:45,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:45,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:19:45,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1464587596] [2020-04-18 15:19:45,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:19:45,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:45,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:19:45,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:19:45,505 INFO L87 Difference]: Start difference. First operand 304 states and 891 transitions. Second operand 10 states. [2020-04-18 15:19:45,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:45,584 INFO L93 Difference]: Finished difference Result 406 states and 1128 transitions. [2020-04-18 15:19:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 15:19:45,585 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-04-18 15:19:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:45,587 INFO L225 Difference]: With dead ends: 406 [2020-04-18 15:19:45,587 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 15:19:45,587 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:19:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 15:19:45,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 15:19:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 15:19:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 619 transitions. [2020-04-18 15:19:45,596 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 619 transitions. Word has length 13 [2020-04-18 15:19:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:45,596 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 619 transitions. [2020-04-18 15:19:45,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:19:45,597 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 619 transitions. [2020-04-18 15:19:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:19:45,597 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:45,598 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:45,598 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:45,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 1 times [2020-04-18 15:19:45,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:45,599 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [331578469] [2020-04-18 15:19:45,599 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:45,601 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 192 transitions. [2020-04-18 15:19:45,602 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-04-18 15:19:45,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:19:45,603 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:45,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:45,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1189219835, now seen corresponding path program 2 times [2020-04-18 15:19:45,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:45,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284485476] [2020-04-18 15:19:45,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:45,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284485476] [2020-04-18 15:19:45,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:45,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:45,648 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:45,650 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:45,655 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 72 transitions. [2020-04-18 15:19:45,656 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:45,735 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:19:45,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:45,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:19:45,736 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 7 states. [2020-04-18 15:19:45,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:45,759 INFO L93 Difference]: Finished difference Result 90 states and 212 transitions. [2020-04-18 15:19:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 212 transitions. [2020-04-18 15:19:45,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:19:45,760 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:45,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:45,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 3 times [2020-04-18 15:19:45,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:45,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566185833] [2020-04-18 15:19:45,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:45,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566185833] [2020-04-18 15:19:45,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:45,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:45,834 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:45,836 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:45,843 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 54 transitions. [2020-04-18 15:19:45,844 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:45,872 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:19:45,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:19:45,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:19:45,873 INFO L87 Difference]: Start difference. First operand 90 states and 212 transitions. Second operand 4 states. [2020-04-18 15:19:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:45,887 INFO L93 Difference]: Finished difference Result 90 states and 212 transitions. [2020-04-18 15:19:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 212 transitions. [2020-04-18 15:19:45,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:45,888 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [331578469] [2020-04-18 15:19:45,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:45,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:19:45,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [331578469] [2020-04-18 15:19:45,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:19:45,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:45,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:19:45,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:19:45,890 INFO L87 Difference]: Start difference. First operand 226 states and 619 transitions. Second operand 9 states. [2020-04-18 15:19:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:46,024 INFO L93 Difference]: Finished difference Result 287 states and 728 transitions. [2020-04-18 15:19:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 15:19:46,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 15:19:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:46,027 INFO L225 Difference]: With dead ends: 287 [2020-04-18 15:19:46,027 INFO L226 Difference]: Without dead ends: 206 [2020-04-18 15:19:46,027 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:19:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-04-18 15:19:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-04-18 15:19:46,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-04-18 15:19:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 530 transitions. [2020-04-18 15:19:46,034 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 530 transitions. Word has length 14 [2020-04-18 15:19:46,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:46,035 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 530 transitions. [2020-04-18 15:19:46,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:19:46,036 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 530 transitions. [2020-04-18 15:19:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:19:46,037 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:46,037 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:46,037 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:46,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:46,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-04-18 15:19:46,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:46,038 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1342135026] [2020-04-18 15:19:46,038 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:46,040 INFO L259 McrAutomatonBuilder]: Finished intersection with 102 states and 268 transitions. [2020-04-18 15:19:46,041 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-04-18 15:19:46,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:19:46,042 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:46,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:46,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1788890552, now seen corresponding path program 2 times [2020-04-18 15:19:46,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:46,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684549673] [2020-04-18 15:19:46,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:46,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684549673] [2020-04-18 15:19:46,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:46,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:46,072 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:46,073 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:46,078 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 73 transitions. [2020-04-18 15:19:46,078 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:46,148 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:19:46,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:46,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:19:46,149 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 7 states. [2020-04-18 15:19:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:46,171 INFO L93 Difference]: Finished difference Result 126 states and 320 transitions. [2020-04-18 15:19:46,172 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 320 transitions. [2020-04-18 15:19:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:19:46,173 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:46,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:46,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1673122304, now seen corresponding path program 3 times [2020-04-18 15:19:46,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:46,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290450147] [2020-04-18 15:19:46,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:46,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290450147] [2020-04-18 15:19:46,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:46,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:46,223 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:46,224 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:46,231 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 69 transitions. [2020-04-18 15:19:46,231 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:46,267 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:46,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:19:46,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:19:46,268 INFO L87 Difference]: Start difference. First operand 126 states and 320 transitions. Second operand 4 states. [2020-04-18 15:19:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:46,309 INFO L93 Difference]: Finished difference Result 150 states and 364 transitions. [2020-04-18 15:19:46,309 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 364 transitions. [2020-04-18 15:19:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:19:46,310 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:19:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:46,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 4 times [2020-04-18 15:19:46,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:46,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949990559] [2020-04-18 15:19:46,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:46,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949990559] [2020-04-18 15:19:46,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:46,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:46,370 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:46,372 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:46,376 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 59 transitions. [2020-04-18 15:19:46,376 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:46,390 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:19:46,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:19:46,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:19:46,391 INFO L87 Difference]: Start difference. First operand 150 states and 364 transitions. Second operand 5 states. [2020-04-18 15:19:46,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:46,413 INFO L93 Difference]: Finished difference Result 150 states and 364 transitions. [2020-04-18 15:19:46,413 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 364 transitions. [2020-04-18 15:19:46,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:46,414 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1342135026] [2020-04-18 15:19:46,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:46,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:19:46,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1342135026] [2020-04-18 15:19:46,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:19:46,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:46,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:19:46,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:19:46,416 INFO L87 Difference]: Start difference. First operand 206 states and 530 transitions. Second operand 10 states. [2020-04-18 15:19:46,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:46,618 INFO L93 Difference]: Finished difference Result 227 states and 530 transitions. [2020-04-18 15:19:46,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 15:19:46,618 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 15:19:46,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:46,620 INFO L225 Difference]: With dead ends: 227 [2020-04-18 15:19:46,620 INFO L226 Difference]: Without dead ends: 162 [2020-04-18 15:19:46,621 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:19:46,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-04-18 15:19:46,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-04-18 15:19:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-18 15:19:46,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 369 transitions. [2020-04-18 15:19:46,626 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 369 transitions. Word has length 15 [2020-04-18 15:19:46,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:46,627 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 369 transitions. [2020-04-18 15:19:46,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:19:46,627 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 369 transitions. [2020-04-18 15:19:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:19:46,628 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:46,628 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:46,628 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:46,628 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-04-18 15:19:46,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:46,629 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1282403205] [2020-04-18 15:19:46,629 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:46,632 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 422 transitions. [2020-04-18 15:19:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-04-18 15:19:46,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:19:46,635 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:46,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:46,635 INFO L82 PathProgramCache]: Analyzing trace with hash 378967974, now seen corresponding path program 2 times [2020-04-18 15:19:46,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:46,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461508645] [2020-04-18 15:19:46,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:46,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461508645] [2020-04-18 15:19:46,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:46,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:46,678 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:46,679 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:46,685 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 74 transitions. [2020-04-18 15:19:46,685 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:48,801 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:19:48,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:48,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2020-04-18 15:19:48,802 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 7 states. [2020-04-18 15:19:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:48,832 INFO L93 Difference]: Finished difference Result 186 states and 506 transitions. [2020-04-18 15:19:48,832 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 506 transitions. [2020-04-18 15:19:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:19:48,833 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:48,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:48,833 INFO L82 PathProgramCache]: Analyzing trace with hash 327184110, now seen corresponding path program 3 times [2020-04-18 15:19:48,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:48,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343766256] [2020-04-18 15:19:48,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:48,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343766256] [2020-04-18 15:19:48,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:48,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:48,870 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:48,872 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:48,878 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 79 transitions. [2020-04-18 15:19:48,878 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:48,907 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:48,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:19:48,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=61, Unknown=1, NotChecked=0, Total=90 [2020-04-18 15:19:48,907 INFO L87 Difference]: Start difference. First operand 186 states and 506 transitions. Second operand 4 states. [2020-04-18 15:19:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:48,937 INFO L93 Difference]: Finished difference Result 242 states and 626 transitions. [2020-04-18 15:19:48,938 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 626 transitions. [2020-04-18 15:19:48,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:19:48,938 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:19:48,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:48,939 INFO L82 PathProgramCache]: Analyzing trace with hash -468235590, now seen corresponding path program 4 times [2020-04-18 15:19:48,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:48,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491684912] [2020-04-18 15:19:48,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:48,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491684912] [2020-04-18 15:19:48,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:48,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:48,983 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:48,984 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:48,992 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 69 transitions. [2020-04-18 15:19:48,992 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:49,007 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:19:49,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:19:49,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=95, Unknown=1, NotChecked=0, Total=132 [2020-04-18 15:19:49,008 INFO L87 Difference]: Start difference. First operand 242 states and 626 transitions. Second operand 5 states. [2020-04-18 15:19:49,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:49,055 INFO L93 Difference]: Finished difference Result 254 states and 642 transitions. [2020-04-18 15:19:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 642 transitions. [2020-04-18 15:19:49,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:19:49,056 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:19:49,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:49,056 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 5 times [2020-04-18 15:19:49,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:49,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702526410] [2020-04-18 15:19:49,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:49,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702526410] [2020-04-18 15:19:49,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:49,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:49,106 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:49,107 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:49,112 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-04-18 15:19:49,113 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:49,129 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:19:49,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:49,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=134, Unknown=1, NotChecked=0, Total=182 [2020-04-18 15:19:49,131 INFO L87 Difference]: Start difference. First operand 254 states and 642 transitions. Second operand 6 states. [2020-04-18 15:19:49,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:49,176 INFO L93 Difference]: Finished difference Result 254 states and 642 transitions. [2020-04-18 15:19:49,177 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 642 transitions. [2020-04-18 15:19:49,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:49,178 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1282403205] [2020-04-18 15:19:49,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:49,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:19:49,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1282403205] [2020-04-18 15:19:49,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:19:49,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:49,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:19:49,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=156, Unknown=1, NotChecked=0, Total=210 [2020-04-18 15:19:49,179 INFO L87 Difference]: Start difference. First operand 162 states and 369 transitions. Second operand 11 states. [2020-04-18 15:19:49,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:49,399 INFO L93 Difference]: Finished difference Result 158 states and 337 transitions. [2020-04-18 15:19:49,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 15:19:49,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-04-18 15:19:49,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:49,401 INFO L225 Difference]: With dead ends: 158 [2020-04-18 15:19:49,402 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 15:19:49,402 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=125, Invalid=336, Unknown=1, NotChecked=0, Total=462 [2020-04-18 15:19:49,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 15:19:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 15:19:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 15:19:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-04-18 15:19:49,407 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 16 [2020-04-18 15:19:49,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:49,407 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-04-18 15:19:49,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:19:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-04-18 15:19:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:49,408 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:49,408 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:49,408 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:49,408 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 1 times [2020-04-18 15:19:49,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:49,409 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2057780860] [2020-04-18 15:19:49,409 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:49,414 INFO L259 McrAutomatonBuilder]: Finished intersection with 282 states and 876 transitions. [2020-04-18 15:19:49,416 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-04-18 15:19:49,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:49,417 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:49,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:49,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1331930345, now seen corresponding path program 2 times [2020-04-18 15:19:49,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:49,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490645638] [2020-04-18 15:19:49,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:49,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:49,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490645638] [2020-04-18 15:19:49,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:49,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:49,445 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:49,447 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:49,453 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 74 transitions. [2020-04-18 15:19:49,453 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:49,483 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:49,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:49,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:19:49,484 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 6 states. [2020-04-18 15:19:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:49,522 INFO L93 Difference]: Finished difference Result 492 states and 1409 transitions. [2020-04-18 15:19:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1409 transitions. [2020-04-18 15:19:49,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:49,524 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:49,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:49,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1281016031, now seen corresponding path program 3 times [2020-04-18 15:19:49,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:49,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141064605] [2020-04-18 15:19:49,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:49,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141064605] [2020-04-18 15:19:49,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:49,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:49,548 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:49,550 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:49,556 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 55 transitions. [2020-04-18 15:19:49,556 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:49,571 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:19:49,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:19:49,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:19:49,572 INFO L87 Difference]: Start difference. First operand 492 states and 1409 transitions. Second operand 3 states. [2020-04-18 15:19:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:49,576 INFO L93 Difference]: Finished difference Result 558 states and 1537 transitions. [2020-04-18 15:19:49,577 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1537 transitions. [2020-04-18 15:19:49,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:49,578 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:19:49,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:49,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1280146481, now seen corresponding path program 4 times [2020-04-18 15:19:49,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:49,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445573382] [2020-04-18 15:19:49,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:49,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445573382] [2020-04-18 15:19:49,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:49,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:49,617 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:49,619 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:49,625 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 64 transitions. [2020-04-18 15:19:49,625 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:49,686 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:19:49,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:49,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:19:49,687 INFO L87 Difference]: Start difference. First operand 558 states and 1537 transitions. Second operand 6 states. [2020-04-18 15:19:49,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:49,776 INFO L93 Difference]: Finished difference Result 642 states and 1670 transitions. [2020-04-18 15:19:49,777 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1670 transitions. [2020-04-18 15:19:49,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:49,778 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:19:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:49,779 INFO L82 PathProgramCache]: Analyzing trace with hash 484726781, now seen corresponding path program 5 times [2020-04-18 15:19:49,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:49,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29726178] [2020-04-18 15:19:49,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:49,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29726178] [2020-04-18 15:19:49,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:49,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:19:49,830 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:49,832 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:49,838 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 60 transitions. [2020-04-18 15:19:49,838 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:49,871 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:19:49,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:49,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:19:49,872 INFO L87 Difference]: Start difference. First operand 642 states and 1670 transitions. Second operand 7 states. [2020-04-18 15:19:49,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:49,996 INFO L93 Difference]: Finished difference Result 654 states and 1680 transitions. [2020-04-18 15:19:49,996 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1680 transitions. [2020-04-18 15:19:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:19:49,998 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:19:49,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:49,998 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 6 times [2020-04-18 15:19:49,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:49,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937415229] [2020-04-18 15:19:49,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:50,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937415229] [2020-04-18 15:19:50,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:50,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:19:50,069 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:50,071 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:50,076 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 58 transitions. [2020-04-18 15:19:50,077 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:50,108 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:50,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:19:50,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:19:50,109 INFO L87 Difference]: Start difference. First operand 654 states and 1680 transitions. Second operand 8 states. [2020-04-18 15:19:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:50,231 INFO L93 Difference]: Finished difference Result 654 states and 1680 transitions. [2020-04-18 15:19:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1680 transitions. [2020-04-18 15:19:50,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:50,233 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2057780860] [2020-04-18 15:19:50,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:50,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:19:50,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2057780860] [2020-04-18 15:19:50,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 15:19:50,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:50,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 15:19:50,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:19:50,236 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 13 states. [2020-04-18 15:19:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:50,493 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-04-18 15:19:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 15:19:50,494 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-04-18 15:19:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:50,495 INFO L225 Difference]: With dead ends: 120 [2020-04-18 15:19:50,495 INFO L226 Difference]: Without dead ends: 71 [2020-04-18 15:19:50,496 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2020-04-18 15:19:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-04-18 15:19:50,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-04-18 15:19:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-04-18 15:19:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-04-18 15:19:50,498 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-04-18 15:19:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:50,499 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-04-18 15:19:50,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 15:19:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-04-18 15:19:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:50,500 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:50,500 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:50,500 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:50,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-04-18 15:19:50,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:50,501 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1389816472] [2020-04-18 15:19:50,501 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:50,511 INFO L259 McrAutomatonBuilder]: Finished intersection with 562 states and 1890 transitions. [2020-04-18 15:19:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2020-04-18 15:19:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:50,518 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:50,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:50,518 INFO L82 PathProgramCache]: Analyzing trace with hash 106505205, now seen corresponding path program 2 times [2020-04-18 15:19:50,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:50,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329391732] [2020-04-18 15:19:50,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:50,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329391732] [2020-04-18 15:19:50,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:50,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:50,549 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:50,550 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:50,558 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 88 transitions. [2020-04-18 15:19:50,558 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:50,596 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:50,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:50,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:19:50,597 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 6 states. [2020-04-18 15:19:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:50,640 INFO L93 Difference]: Finished difference Result 1084 states and 3459 transitions. [2020-04-18 15:19:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 3459 transitions. [2020-04-18 15:19:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:50,643 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:19:50,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:50,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1599267629, now seen corresponding path program 3 times [2020-04-18 15:19:50,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:50,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000412253] [2020-04-18 15:19:50,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:50,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000412253] [2020-04-18 15:19:50,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:50,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:50,669 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:50,670 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:50,676 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 15:19:50,676 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:50,684 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:19:50,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:19:50,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:19:50,685 INFO L87 Difference]: Start difference. First operand 1084 states and 3459 transitions. Second operand 3 states. [2020-04-18 15:19:50,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:50,693 INFO L93 Difference]: Finished difference Result 1282 states and 3975 transitions. [2020-04-18 15:19:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 3975 transitions. [2020-04-18 15:19:50,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:50,697 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:19:50,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:50,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1860062117, now seen corresponding path program 4 times [2020-04-18 15:19:50,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:50,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163675801] [2020-04-18 15:19:50,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:50,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163675801] [2020-04-18 15:19:50,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:50,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:50,755 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:50,757 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:50,763 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 64 transitions. [2020-04-18 15:19:50,764 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:50,831 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:19:50,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:19:50,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:19:50,831 INFO L87 Difference]: Start difference. First operand 1282 states and 3975 transitions. Second operand 6 states. [2020-04-18 15:19:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:50,981 INFO L93 Difference]: Finished difference Result 1541 states and 4514 transitions. [2020-04-18 15:19:50,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 4514 transitions. [2020-04-18 15:19:50,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:50,985 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:19:50,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:50,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1965909105, now seen corresponding path program 5 times [2020-04-18 15:19:50,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:50,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123280850] [2020-04-18 15:19:50,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:51,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123280850] [2020-04-18 15:19:51,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:51,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:19:51,040 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:51,041 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:51,048 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 58 transitions. [2020-04-18 15:19:51,048 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:51,083 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:19:51,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:51,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:19:51,084 INFO L87 Difference]: Start difference. First operand 1541 states and 4514 transitions. Second operand 7 states. [2020-04-18 15:19:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:51,248 INFO L93 Difference]: Finished difference Result 1602 states and 4600 transitions. [2020-04-18 15:19:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 4600 transitions. [2020-04-18 15:19:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:51,252 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:19:51,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:51,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1087361355, now seen corresponding path program 6 times [2020-04-18 15:19:51,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:51,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758492195] [2020-04-18 15:19:51,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:51,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758492195] [2020-04-18 15:19:51,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:51,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:19:51,299 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:51,300 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:51,307 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 65 transitions. [2020-04-18 15:19:51,308 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:51,336 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:19:51,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:19:51,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:19:51,337 INFO L87 Difference]: Start difference. First operand 1602 states and 4600 transitions. Second operand 4 states. [2020-04-18 15:19:51,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:51,367 INFO L93 Difference]: Finished difference Result 2355 states and 6427 transitions. [2020-04-18 15:19:51,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 6427 transitions. [2020-04-18 15:19:51,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:51,373 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:19:51,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:51,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1152160785, now seen corresponding path program 7 times [2020-04-18 15:19:51,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:51,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213176165] [2020-04-18 15:19:51,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:51,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213176165] [2020-04-18 15:19:51,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:51,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:19:51,469 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:51,471 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:51,478 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 60 transitions. [2020-04-18 15:19:51,478 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:51,518 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:19:51,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:19:51,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:19:51,520 INFO L87 Difference]: Start difference. First operand 2355 states and 6427 transitions. Second operand 8 states. [2020-04-18 15:19:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:51,743 INFO L93 Difference]: Finished difference Result 2367 states and 6435 transitions. [2020-04-18 15:19:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 6435 transitions. [2020-04-18 15:19:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:51,749 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:19:51,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:51,749 INFO L82 PathProgramCache]: Analyzing trace with hash 16625717, now seen corresponding path program 8 times [2020-04-18 15:19:51,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:51,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307295317] [2020-04-18 15:19:51,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:51,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307295317] [2020-04-18 15:19:51,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:51,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:51,786 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:51,788 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:51,794 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 58 transitions. [2020-04-18 15:19:51,794 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:51,859 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:19:51,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:19:51,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:19:51,860 INFO L87 Difference]: Start difference. First operand 2367 states and 6435 transitions. Second operand 5 states. [2020-04-18 15:19:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:51,898 INFO L93 Difference]: Finished difference Result 3755 states and 9942 transitions. [2020-04-18 15:19:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 9942 transitions. [2020-04-18 15:19:51,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 15:19:51,905 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 15:19:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:51,906 INFO L82 PathProgramCache]: Analyzing trace with hash 216357237, now seen corresponding path program 9 times [2020-04-18 15:19:51,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:51,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102184739] [2020-04-18 15:19:51,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:51,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102184739] [2020-04-18 15:19:51,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:51,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:51,934 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:51,936 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:51,945 INFO L259 McrAutomatonBuilder]: Finished intersection with 69 states and 125 transitions. [2020-04-18 15:19:51,945 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:52,130 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:19:52,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:19:52,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2020-04-18 15:19:52,132 INFO L87 Difference]: Start difference. First operand 3755 states and 9942 transitions. Second operand 7 states. [2020-04-18 15:19:52,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:52,195 INFO L93 Difference]: Finished difference Result 5235 states and 13539 transitions. [2020-04-18 15:19:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 13539 transitions. [2020-04-18 15:19:52,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:52,204 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1389816472] [2020-04-18 15:19:52,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:52,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:19:52,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1389816472] [2020-04-18 15:19:52,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 15:19:52,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:52,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 15:19:52,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2020-04-18 15:19:52,206 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 22 states. [2020-04-18 15:19:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:52,847 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-04-18 15:19:52,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 15:19:52,848 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 20 [2020-04-18 15:19:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:52,848 INFO L225 Difference]: With dead ends: 70 [2020-04-18 15:19:52,849 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:19:52,850 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=411, Invalid=2039, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 15:19:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:19:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:19:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:19:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:19:52,852 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-04-18 15:19:52,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:52,852 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:19:52,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 15:19:52,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:19:52,853 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:52,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:19:52 BasicIcfg [2020-04-18 15:19:52,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:19:52,859 INFO L168 Benchmark]: Toolchain (without parser) took 12888.83 ms. Allocated memory was 138.9 MB in the beginning and 341.8 MB in the end (delta: 202.9 MB). Free memory was 100.6 MB in the beginning and 283.2 MB in the end (delta: -182.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:19:52,859 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:19:52,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.99 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 98.7 MB in the beginning and 159.2 MB in the end (delta: -60.5 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:19:52,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.24 ms. Allocated memory is still 202.9 MB. Free memory was 159.2 MB in the beginning and 157.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:19:52,861 INFO L168 Benchmark]: Boogie Preprocessor took 29.95 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 156.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:19:52,861 INFO L168 Benchmark]: RCFGBuilder took 496.42 ms. Allocated memory is still 202.9 MB. Free memory was 155.4 MB in the beginning and 131.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:19:52,862 INFO L168 Benchmark]: TraceAbstraction took 11604.08 ms. Allocated memory was 202.9 MB in the beginning and 341.8 MB in the end (delta: 138.9 MB). Free memory was 131.8 MB in the beginning and 283.2 MB in the end (delta: -151.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:19:52,864 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.99 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 98.7 MB in the beginning and 159.2 MB in the end (delta: -60.5 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.24 ms. Allocated memory is still 202.9 MB. Free memory was 159.2 MB in the beginning and 157.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.95 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 156.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 496.42 ms. Allocated memory is still 202.9 MB. Free memory was 155.4 MB in the beginning and 131.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11604.08 ms. Allocated memory was 202.9 MB in the beginning and 341.8 MB in the end (delta: 138.9 MB). Free memory was 131.8 MB in the beginning and 283.2 MB in the end (delta: -151.4 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: 1.8s, 92 ProgramPointsBefore, 38 ProgramPointsAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 944 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3093 CheckedPairsTotal, 65 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 217 SDtfs, 750 SDslu, 813 SDs, 0 SdLazy, 649 SolverSat, 217 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 683 GetRequests, 512 SyntacticMatches, 4 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...