/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/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:14:01,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:14:01,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:14:01,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:14:01,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:14:01,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:14:01,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:14:01,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:14:01,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:14:01,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:14:01,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:14:01,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:14:01,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:14:01,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:14:01,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:14:01,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:14:01,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:14:01,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:14:01,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:14:01,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:14:01,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:14:01,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:14:01,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:14:01,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:14:01,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:14:01,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:14:01,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:14:01,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:14:01,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:14:01,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:14:01,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:14:01,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:14:01,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:14:01,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:14:01,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:14:01,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:14:01,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:14:01,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:14:01,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:14:01,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:14:01,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:14:01,165 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 15:14:01,190 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:14:01,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:14:01,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:14:01,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:14:01,192 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:14:01,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:14:01,193 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:14:01,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:14:01,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:14:01,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:14:01,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:14:01,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:14:01,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:14:01,195 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:14:01,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:14:01,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:14:01,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:14:01,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:14:01,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:14:01,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:14:01,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:14:01,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:14:01,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:14:01,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:14:01,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:14:01,198 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:14:01,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:14:01,198 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:14:01,198 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:14:01,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:14:01,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:14:01,507 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:14:01,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:14:01,535 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:14:01,537 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:14:01,537 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:14:01,539 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-04-18 15:14:01,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07751eb80/7cef3e4ed1b44bbbaa69e6d023e4b89e/FLAGb88c5a28b [2020-04-18 15:14:02,135 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:14:02,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-04-18 15:14:02,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07751eb80/7cef3e4ed1b44bbbaa69e6d023e4b89e/FLAGb88c5a28b [2020-04-18 15:14:02,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07751eb80/7cef3e4ed1b44bbbaa69e6d023e4b89e [2020-04-18 15:14:02,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:14:02,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:14:02,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:14:02,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:14:02,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:14:02,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:14:02" (1/1) ... [2020-04-18 15:14:02,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e5460c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:02, skipping insertion in model container [2020-04-18 15:14:02,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:14:02" (1/1) ... [2020-04-18 15:14:02,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:14:02,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:14:03,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:14:03,111 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:14:03,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:14:03,241 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:14:03,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03 WrapperNode [2020-04-18 15:14:03,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:14:03,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:14:03,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:14:03,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:14:03,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03" (1/1) ... [2020-04-18 15:14:03,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03" (1/1) ... [2020-04-18 15:14:03,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:14:03,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:14:03,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:14:03,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:14:03,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03" (1/1) ... [2020-04-18 15:14:03,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03" (1/1) ... [2020-04-18 15:14:03,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03" (1/1) ... [2020-04-18 15:14:03,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03" (1/1) ... [2020-04-18 15:14:03,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03" (1/1) ... [2020-04-18 15:14:03,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03" (1/1) ... [2020-04-18 15:14:03,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03" (1/1) ... [2020-04-18 15:14:03,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:14:03,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:14:03,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:14:03,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:14:03,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03" (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 15:14:03,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:14:03,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:14:03,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:14:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:14:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:14:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:14:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:14:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:14:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:14:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:14:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:14:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:14:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:14:03,373 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 15:14:03,764 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:14:03,764 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:14:03,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:14:03 BoogieIcfgContainer [2020-04-18 15:14:03,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:14:03,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:14:03,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:14:03,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:14:03,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:14:02" (1/3) ... [2020-04-18 15:14:03,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7ca0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:14:03, skipping insertion in model container [2020-04-18 15:14:03,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:03" (2/3) ... [2020-04-18 15:14:03,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7ca0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:14:03, skipping insertion in model container [2020-04-18 15:14:03,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:14:03" (3/3) ... [2020-04-18 15:14:03,781 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-04-18 15:14:03,791 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:14:03,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:14:03,799 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:14:03,800 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:14:03,824 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,825 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,825 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,825 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,826 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,826 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,827 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,827 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,827 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,827 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,828 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,828 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,829 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,829 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,829 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,829 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,830 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,830 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,834 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,834 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,835 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,835 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,840 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,840 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,840 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,841 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,843 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,843 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,843 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,844 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:03,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:14:03,872 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:14:03,872 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:14:03,872 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:14:03,872 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:14:03,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:14:03,873 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:14:03,873 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:14:03,873 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:14:03,886 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 15:14:03,888 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:14:03,929 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:14:03,930 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:14:03,935 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:14:03,937 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:14:03,967 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:14:03,967 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:14:03,968 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:14:03,969 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:14:03,971 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:14:05,437 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-04-18 15:14:05,437 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 15:14:05,441 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 15:14:05,467 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:14:05,469 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:14:05,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:14:05,480 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:05,481 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:05,481 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:05,488 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-04-18 15:14:05,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:05,497 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [726874289] [2020-04-18 15:14:05,514 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:05,529 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:14:05,530 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:14:05,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:14:05,531 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:05,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:05,532 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 2 times [2020-04-18 15:14:05,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:05,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925213596] [2020-04-18 15:14:05,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:05,771 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 15:14:05,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925213596] [2020-04-18 15:14:05,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:05,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:14:05,774 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:05,775 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:05,778 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:14:05,778 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:05,787 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:05,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:05,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:05,793 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:14:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:05,797 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:14:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:14:05,797 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:05,798 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [726874289] [2020-04-18 15:14:05,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:05,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:14:05,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [726874289] [2020-04-18 15:14:05,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:14:05,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:05,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:05,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:05,806 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:14:05,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:05,846 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 15:14:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:14:05,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:14:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:05,884 INFO L225 Difference]: With dead ends: 282 [2020-04-18 15:14:05,885 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 15:14:05,886 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 15:14:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 15:14:05,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 15:14:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 15:14:05,973 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 15:14:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:05,974 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 15:14:05,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:14:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 15:14:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:14:05,977 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:05,977 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:05,978 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:05,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 1 times [2020-04-18 15:14:05,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:05,979 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1320137347] [2020-04-18 15:14:05,979 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:05,980 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 15:14:05,982 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:14:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:14:05,983 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:05,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:05,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379138, now seen corresponding path program 2 times [2020-04-18 15:14:05,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:05,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675472628] [2020-04-18 15:14:05,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:06,088 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 15:14:06,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675472628] [2020-04-18 15:14:06,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:06,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:06,089 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:06,090 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,091 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:14:06,091 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:06,100 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:06,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:06,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:06,100 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 15:14:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,103 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:14:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:14:06,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:14:06,104 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:06,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 3 times [2020-04-18 15:14:06,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:06,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443079803] [2020-04-18 15:14:06,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:06,179 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 15:14:06,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443079803] [2020-04-18 15:14:06,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:06,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:06,181 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:06,181 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,182 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:14:06,183 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:06,197 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:14:06,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:06,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:14:06,198 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-04-18 15:14:06,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,208 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:14:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:14:06,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:06,209 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1320137347] [2020-04-18 15:14:06,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:06,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:14:06,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1320137347] [2020-04-18 15:14:06,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:14:06,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:06,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:06,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:14:06,211 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 5 states. [2020-04-18 15:14:06,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,232 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 15:14:06,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:14:06,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 15:14:06,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:06,235 INFO L225 Difference]: With dead ends: 278 [2020-04-18 15:14:06,235 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 15:14:06,237 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:14:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 15:14:06,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 15:14:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 15:14:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 15:14:06,252 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 15:14:06,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:06,252 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 15:14:06,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:14:06,253 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 15:14:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:14:06,254 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:06,254 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:06,254 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:06,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,255 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 1 times [2020-04-18 15:14:06,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:06,255 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1915995781] [2020-04-18 15:14:06,256 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,256 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 15:14:06,257 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:14:06,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:14:06,257 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:06,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,258 INFO L82 PathProgramCache]: Analyzing trace with hash 415020294, now seen corresponding path program 2 times [2020-04-18 15:14:06,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:06,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026526979] [2020-04-18 15:14:06,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:06,314 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 15:14:06,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026526979] [2020-04-18 15:14:06,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:06,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:06,315 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:06,316 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,317 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:14:06,317 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:06,321 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:06,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:06,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:06,321 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-04-18 15:14:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,324 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 15:14:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 15:14:06,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:14:06,325 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:06,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,325 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 3 times [2020-04-18 15:14:06,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:06,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695063200] [2020-04-18 15:14:06,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:06,381 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 15:14:06,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695063200] [2020-04-18 15:14:06,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:06,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:06,382 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:06,383 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,384 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 15:14:06,384 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:06,402 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:14:06,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:06,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:14:06,403 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 4 states. [2020-04-18 15:14:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,423 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-04-18 15:14:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-04-18 15:14:06,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:14:06,423 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:14:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,424 INFO L82 PathProgramCache]: Analyzing trace with hash 808893834, now seen corresponding path program 4 times [2020-04-18 15:14:06,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:06,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265548412] [2020-04-18 15:14:06,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:06,454 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 15:14:06,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265548412] [2020-04-18 15:14:06,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:06,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:06,455 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:06,456 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,458 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 15:14:06,458 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:06,473 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:14:06,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:06,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:14:06,474 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-04-18 15:14:06,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,487 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-04-18 15:14:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-04-18 15:14:06,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:06,488 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1915995781] [2020-04-18 15:14:06,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:06,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:14:06,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1915995781] [2020-04-18 15:14:06,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:14:06,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:06,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:14:06,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:14:06,490 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 7 states. [2020-04-18 15:14:06,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,542 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 15:14:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:14:06,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-04-18 15:14:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:06,545 INFO L225 Difference]: With dead ends: 218 [2020-04-18 15:14:06,545 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 15:14:06,546 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:14:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 15:14:06,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 15:14:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 15:14:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 15:14:06,572 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 15:14:06,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:06,572 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 15:14:06,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:14:06,572 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 15:14:06,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:14:06,573 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:06,573 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:06,573 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:06,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 1 times [2020-04-18 15:14:06,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:06,576 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [665115623] [2020-04-18 15:14:06,577 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,578 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 15:14:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:14:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:14:06,579 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:06,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1558338202, now seen corresponding path program 2 times [2020-04-18 15:14:06,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:06,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445571350] [2020-04-18 15:14:06,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:06,642 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 15:14:06,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445571350] [2020-04-18 15:14:06,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:06,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:06,643 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:06,646 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,648 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 15:14:06,648 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:06,657 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:06,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:06,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:06,658 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 15:14:06,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,663 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:14:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:14:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:14:06,664 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:06,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 3 times [2020-04-18 15:14:06,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:06,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246534766] [2020-04-18 15:14:06,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:06,712 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 15:14:06,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246534766] [2020-04-18 15:14:06,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:06,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:14:06,714 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:06,715 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,717 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 15:14:06,717 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:06,728 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:06,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:06,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:06,728 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 3 states. [2020-04-18 15:14:06,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,729 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:14:06,729 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:14:06,730 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:06,732 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [665115623] [2020-04-18 15:14:06,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:06,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:14:06,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [665115623] [2020-04-18 15:14:06,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:14:06,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:06,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:06,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:06,735 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-04-18 15:14:06,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,756 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-18 15:14:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:14:06,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 15:14:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:06,758 INFO L225 Difference]: With dead ends: 144 [2020-04-18 15:14:06,758 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 15:14:06,759 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:14:06,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 15:14:06,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 15:14:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 15:14:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 15:14:06,772 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-18 15:14:06,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:06,774 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 15:14:06,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:14:06,774 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 15:14:06,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:14:06,776 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:06,776 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:06,776 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:06,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-04-18 15:14:06,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:06,777 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1158944733] [2020-04-18 15:14:06,777 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,779 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 118 transitions. [2020-04-18 15:14:06,781 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 15:14:06,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:14:06,783 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:06,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1063843815, now seen corresponding path program 2 times [2020-04-18 15:14:06,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:06,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559099619] [2020-04-18 15:14:06,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:06,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559099619] [2020-04-18 15:14:06,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:06,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:06,820 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:06,822 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,825 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 15:14:06,826 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:06,829 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:06,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:06,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:06,830 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-04-18 15:14:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,834 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 15:14:06,834 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 15:14:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:14:06,835 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:06,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1063869855, now seen corresponding path program 3 times [2020-04-18 15:14:06,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:06,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761342724] [2020-04-18 15:14:06,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:06,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761342724] [2020-04-18 15:14:06,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:06,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:06,884 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:06,885 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,888 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 15:14:06,888 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:06,892 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:06,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:06,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:06,894 INFO L87 Difference]: Start difference. First operand 60 states and 125 transitions. Second operand 3 states. [2020-04-18 15:14:06,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:06,898 INFO L93 Difference]: Finished difference Result 69 states and 134 transitions. [2020-04-18 15:14:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 134 transitions. [2020-04-18 15:14:06,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:14:06,899 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:14:06,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:06,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1063870665, now seen corresponding path program 4 times [2020-04-18 15:14:06,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:06,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958276440] [2020-04-18 15:14:06,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:06,983 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 15:14:06,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958276440] [2020-04-18 15:14:06,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:06,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:06,984 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:06,985 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:06,990 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-04-18 15:14:06,990 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:07,004 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:14:07,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:07,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:14:07,006 INFO L87 Difference]: Start difference. First operand 69 states and 134 transitions. Second operand 4 states. [2020-04-18 15:14:07,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,016 INFO L93 Difference]: Finished difference Result 69 states and 134 transitions. [2020-04-18 15:14:07,016 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 134 transitions. [2020-04-18 15:14:07,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:07,017 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1158944733] [2020-04-18 15:14:07,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:07,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:14:07,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1158944733] [2020-04-18 15:14:07,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:14:07,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:07,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:14:07,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:14:07,019 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 6 states. [2020-04-18 15:14:07,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,169 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 15:14:07,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:14:07,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-04-18 15:14:07,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:07,174 INFO L225 Difference]: With dead ends: 164 [2020-04-18 15:14:07,174 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 15:14:07,174 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:14:07,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 15:14:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 15:14:07,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 15:14:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 15:14:07,181 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 15:14:07,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:07,182 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 15:14:07,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:14:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 15:14:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:14:07,185 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:07,185 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:07,185 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:07,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,185 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-04-18 15:14:07,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:07,186 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [541819743] [2020-04-18 15:14:07,187 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,188 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 160 transitions. [2020-04-18 15:14:07,190 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 15:14:07,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:14:07,191 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:07,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1309642661, now seen corresponding path program 2 times [2020-04-18 15:14:07,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:07,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175210351] [2020-04-18 15:14:07,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:07,228 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 15:14:07,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175210351] [2020-04-18 15:14:07,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:07,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:07,229 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:07,231 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,233 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-04-18 15:14:07,233 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:07,238 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:07,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:07,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:07,238 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2020-04-18 15:14:07,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,242 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 15:14:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 15:14:07,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:14:07,243 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:07,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1309616621, now seen corresponding path program 3 times [2020-04-18 15:14:07,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:07,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584025991] [2020-04-18 15:14:07,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:07,282 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 15:14:07,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584025991] [2020-04-18 15:14:07,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:07,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:07,283 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:07,284 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,287 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 15:14:07,287 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:07,292 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:07,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:07,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:07,293 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 3 states. [2020-04-18 15:14:07,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,298 INFO L93 Difference]: Finished difference Result 90 states and 183 transitions. [2020-04-18 15:14:07,298 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 183 transitions. [2020-04-18 15:14:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:14:07,298 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:14:07,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1309615811, now seen corresponding path program 4 times [2020-04-18 15:14:07,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:07,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152161454] [2020-04-18 15:14:07,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:07,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152161454] [2020-04-18 15:14:07,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:07,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:07,355 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:07,357 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,363 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-04-18 15:14:07,363 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:07,388 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:07,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:07,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:14:07,389 INFO L87 Difference]: Start difference. First operand 90 states and 183 transitions. Second operand 5 states. [2020-04-18 15:14:07,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,420 INFO L93 Difference]: Finished difference Result 90 states and 183 transitions. [2020-04-18 15:14:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 183 transitions. [2020-04-18 15:14:07,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:07,422 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [541819743] [2020-04-18 15:14:07,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:07,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:14:07,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [541819743] [2020-04-18 15:14:07,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:14:07,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:07,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:14:07,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:14:07,423 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 7 states. [2020-04-18 15:14:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,619 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 15:14:07,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:14:07,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 15:14:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:07,620 INFO L225 Difference]: With dead ends: 122 [2020-04-18 15:14:07,620 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 15:14:07,621 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:14:07,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 15:14:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 15:14:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 15:14:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 15:14:07,624 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 15:14:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:07,624 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 15:14:07,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:14:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 15:14:07,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:14:07,625 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:07,625 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:07,625 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:07,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-04-18 15:14:07,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:07,626 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [743717141] [2020-04-18 15:14:07,627 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,628 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 15:14:07,629 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 15:14:07,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:14:07,629 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:07,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1944216008, now seen corresponding path program 2 times [2020-04-18 15:14:07,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:07,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994552994] [2020-04-18 15:14:07,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:07,655 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 15:14:07,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994552994] [2020-04-18 15:14:07,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:07,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:07,656 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:07,658 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,660 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-04-18 15:14:07,660 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:07,664 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:07,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:07,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:07,665 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 15:14:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,668 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 15:14:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 15:14:07,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:14:07,668 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1943408768, now seen corresponding path program 3 times [2020-04-18 15:14:07,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:07,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810604657] [2020-04-18 15:14:07,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:07,695 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 15:14:07,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810604657] [2020-04-18 15:14:07,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:07,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:07,696 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:07,698 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,700 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 15:14:07,700 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:07,705 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:07,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:07,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:07,706 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 3 states. [2020-04-18 15:14:07,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,709 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 15:14:07,710 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 15:14:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:14:07,710 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:14:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1943352968, now seen corresponding path program 4 times [2020-04-18 15:14:07,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:07,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707234729] [2020-04-18 15:14:07,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:07,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707234729] [2020-04-18 15:14:07,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:07,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:07,738 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:07,739 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,742 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 15:14:07,742 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:07,754 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:14:07,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:07,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:14:07,756 INFO L87 Difference]: Start difference. First operand 80 states and 149 transitions. Second operand 3 states. [2020-04-18 15:14:07,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,761 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 15:14:07,761 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 15:14:07,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:07,762 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [743717141] [2020-04-18 15:14:07,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:07,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:14:07,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [743717141] [2020-04-18 15:14:07,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:14:07,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:07,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:07,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:14:07,764 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 5 states. [2020-04-18 15:14:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,787 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 15:14:07,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:14:07,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 15:14:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:07,789 INFO L225 Difference]: With dead ends: 115 [2020-04-18 15:14:07,789 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 15:14:07,789 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:14:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 15:14:07,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 15:14:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 15:14:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 15:14:07,793 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 15:14:07,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:07,794 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 15:14:07,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:14:07,794 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 15:14:07,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:07,795 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:07,795 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:07,795 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:07,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,796 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-04-18 15:14:07,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:07,797 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [129512326] [2020-04-18 15:14:07,798 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,802 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 352 transitions. [2020-04-18 15:14:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 15:14:07,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:07,805 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:07,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,806 INFO L82 PathProgramCache]: Analyzing trace with hash 141184219, now seen corresponding path program 2 times [2020-04-18 15:14:07,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:07,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504269299] [2020-04-18 15:14:07,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:07,834 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 15:14:07,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504269299] [2020-04-18 15:14:07,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:07,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:07,836 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:07,837 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,840 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-04-18 15:14:07,841 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:07,844 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:07,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:07,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:07,845 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-04-18 15:14:07,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,849 INFO L93 Difference]: Finished difference Result 154 states and 376 transitions. [2020-04-18 15:14:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 15:14:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:07,850 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:07,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,850 INFO L82 PathProgramCache]: Analyzing trace with hash 116159779, now seen corresponding path program 3 times [2020-04-18 15:14:07,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:07,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323511683] [2020-04-18 15:14:07,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:07,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323511683] [2020-04-18 15:14:07,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:07,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:07,882 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:07,884 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,887 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 15:14:07,887 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:07,892 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:07,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:07,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:07,892 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-04-18 15:14:07,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:07,896 INFO L93 Difference]: Finished difference Result 190 states and 439 transitions. [2020-04-18 15:14:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 439 transitions. [2020-04-18 15:14:07,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:07,897 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:14:07,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:07,897 INFO L82 PathProgramCache]: Analyzing trace with hash 115313869, now seen corresponding path program 4 times [2020-04-18 15:14:07,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:07,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254179885] [2020-04-18 15:14:07,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:07,935 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 15:14:07,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254179885] [2020-04-18 15:14:07,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:07,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:07,936 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:07,939 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:07,945 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 15:14:07,946 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:08,003 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:14:08,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:08,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:14:08,003 INFO L87 Difference]: Start difference. First operand 190 states and 439 transitions. Second operand 5 states. [2020-04-18 15:14:08,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:08,046 INFO L93 Difference]: Finished difference Result 295 states and 630 transitions. [2020-04-18 15:14:08,046 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 630 transitions. [2020-04-18 15:14:08,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:08,047 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:14:08,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:08,047 INFO L82 PathProgramCache]: Analyzing trace with hash 115381369, now seen corresponding path program 5 times [2020-04-18 15:14:08,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:08,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510734548] [2020-04-18 15:14:08,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:08,104 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 15:14:08,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510734548] [2020-04-18 15:14:08,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:08,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:14:08,105 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:08,106 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:08,112 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 73 transitions. [2020-04-18 15:14:08,112 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:08,142 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:08,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:08,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:14:08,143 INFO L87 Difference]: Start difference. First operand 295 states and 630 transitions. Second operand 5 states. [2020-04-18 15:14:08,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:08,189 INFO L93 Difference]: Finished difference Result 305 states and 638 transitions. [2020-04-18 15:14:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 638 transitions. [2020-04-18 15:14:08,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:08,191 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:14:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:08,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1392131675, now seen corresponding path program 6 times [2020-04-18 15:14:08,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:08,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829377524] [2020-04-18 15:14:08,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:08,229 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 15:14:08,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829377524] [2020-04-18 15:14:08,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:08,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:08,231 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:08,232 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:08,236 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 51 transitions. [2020-04-18 15:14:08,236 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:08,260 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:08,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:08,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:14:08,261 INFO L87 Difference]: Start difference. First operand 305 states and 638 transitions. Second operand 4 states. [2020-04-18 15:14:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:08,284 INFO L93 Difference]: Finished difference Result 432 states and 842 transitions. [2020-04-18 15:14:08,284 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 842 transitions. [2020-04-18 15:14:08,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:08,285 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:14:08,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:08,286 INFO L82 PathProgramCache]: Analyzing trace with hash -940012763, now seen corresponding path program 7 times [2020-04-18 15:14:08,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:08,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039137991] [2020-04-18 15:14:08,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:08,318 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 15:14:08,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039137991] [2020-04-18 15:14:08,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:08,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:08,319 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:08,320 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:08,325 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 65 transitions. [2020-04-18 15:14:08,325 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:08,374 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:14:08,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:08,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:14:08,375 INFO L87 Difference]: Start difference. First operand 432 states and 842 transitions. Second operand 5 states. [2020-04-18 15:14:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:08,423 INFO L93 Difference]: Finished difference Result 541 states and 1034 transitions. [2020-04-18 15:14:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1034 transitions. [2020-04-18 15:14:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:08,424 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:14:08,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:08,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1488530927, now seen corresponding path program 8 times [2020-04-18 15:14:08,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:08,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792712824] [2020-04-18 15:14:08,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:08,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792712824] [2020-04-18 15:14:08,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:08,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:14:08,500 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:08,504 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:08,510 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-04-18 15:14:08,510 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:08,640 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:14:08,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:14:08,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:14:08,642 INFO L87 Difference]: Start difference. First operand 541 states and 1034 transitions. Second operand 7 states. [2020-04-18 15:14:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:08,699 INFO L93 Difference]: Finished difference Result 541 states and 1034 transitions. [2020-04-18 15:14:08,700 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1034 transitions. [2020-04-18 15:14:08,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:08,702 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [129512326] [2020-04-18 15:14:08,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:08,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:14:08,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [129512326] [2020-04-18 15:14:08,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 15:14:08,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:08,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 15:14:08,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:14:08,703 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 16 states. [2020-04-18 15:14:09,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:09,549 INFO L93 Difference]: Finished difference Result 133 states and 257 transitions. [2020-04-18 15:14:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-04-18 15:14:09,549 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2020-04-18 15:14:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:09,550 INFO L225 Difference]: With dead ends: 133 [2020-04-18 15:14:09,550 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:14:09,551 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=515, Invalid=2907, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 15:14:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:14:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:14:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:14:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:14:09,552 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 15:14:09,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:09,552 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:14:09,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 15:14:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:14:09,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:09,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:14:09 BasicIcfg [2020-04-18 15:14:09,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:14:09,559 INFO L168 Benchmark]: Toolchain (without parser) took 7055.18 ms. Allocated memory was 146.3 MB in the beginning and 282.1 MB in the end (delta: 135.8 MB). Free memory was 102.7 MB in the beginning and 113.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 124.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:09,559 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 15:14:09,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.54 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.9 MB in the beginning and 159.2 MB in the end (delta: -58.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:09,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.84 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 156.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:09,561 INFO L168 Benchmark]: Boogie Preprocessor took 25.37 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:09,561 INFO L168 Benchmark]: RCFGBuilder took 459.09 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 133.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:09,562 INFO L168 Benchmark]: TraceAbstraction took 5782.79 ms. Allocated memory was 202.4 MB in the beginning and 282.1 MB in the end (delta: 79.7 MB). Free memory was 133.0 MB in the beginning and 113.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 99.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:09,565 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.54 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.9 MB in the beginning and 159.2 MB in the end (delta: -58.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.84 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 156.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.37 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.09 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 133.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5782.79 ms. Allocated memory was 202.4 MB in the beginning and 282.1 MB in the end (delta: 79.7 MB). Free memory was 133.0 MB in the beginning and 113.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 99.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 159 SDtfs, 258 SDslu, 443 SDs, 0 SdLazy, 404 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 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...