/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/safe014_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:13:40,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:13:40,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:13:40,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:13:40,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:13:40,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:13:40,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:13:40,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:13:40,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:13:40,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:13:40,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:13:40,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:13:40,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:13:40,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:13:40,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:13:40,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:13:40,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:13:40,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:13:40,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:13:40,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:13:40,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:13:40,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:13:40,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:13:40,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:13:40,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:13:40,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:13:40,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:13:40,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:13:40,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:13:40,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:13:40,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:13:40,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:13:40,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:13:40,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:13:40,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:13:40,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:13:40,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:13:40,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:13:40,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:13:40,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:13:40,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:13:40,184 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 15:13:40,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:13:40,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:13:40,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:13:40,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:13:40,224 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:13:40,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:13:40,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:13:40,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:13:40,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:13:40,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:13:40,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:13:40,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:13:40,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:13:40,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:13:40,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:13:40,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:13:40,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:13:40,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:13:40,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:13:40,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:13:40,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:13:40,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:13:40,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:13:40,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:13:40,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:13:40,230 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:13:40,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:13:40,230 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:13:40,230 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:13:40,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:13:40,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:13:40,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:13:40,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:13:40,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:13:40,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:13:40,509 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:13:40,510 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-04-18 15:13:40,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f589f6dc/e96c08a9657e4eb7b578cf8dc497856b/FLAGbb1652174 [2020-04-18 15:13:41,207 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:13:41,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-04-18 15:13:41,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f589f6dc/e96c08a9657e4eb7b578cf8dc497856b/FLAGbb1652174 [2020-04-18 15:13:41,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f589f6dc/e96c08a9657e4eb7b578cf8dc497856b [2020-04-18 15:13:41,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:13:41,524 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:13:41,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:13:41,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:13:41,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:13:41,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:13:41" (1/1) ... [2020-04-18 15:13:41,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717fe4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:41, skipping insertion in model container [2020-04-18 15:13:41,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:13:41" (1/1) ... [2020-04-18 15:13:41,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:13:41,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:13:42,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:13:42,068 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:13:42,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:13:42,194 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:13:42,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42 WrapperNode [2020-04-18 15:13:42,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:13:42,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:13:42,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:13:42,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:13:42,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42" (1/1) ... [2020-04-18 15:13:42,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42" (1/1) ... [2020-04-18 15:13:42,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:13:42,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:13:42,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:13:42,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:13:42,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42" (1/1) ... [2020-04-18 15:13:42,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42" (1/1) ... [2020-04-18 15:13:42,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42" (1/1) ... [2020-04-18 15:13:42,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42" (1/1) ... [2020-04-18 15:13:42,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42" (1/1) ... [2020-04-18 15:13:42,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42" (1/1) ... [2020-04-18 15:13:42,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42" (1/1) ... [2020-04-18 15:13:42,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:13:42,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:13:42,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:13:42,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:13:42,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:13:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:13:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:13:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:13:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:13:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:13:42,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:13:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:13:42,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:13:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:13:42,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:13:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:13:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:13:42,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:13:42,336 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 15:13:42,695 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:13:42,696 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:13:42,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:13:42 BoogieIcfgContainer [2020-04-18 15:13:42,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:13:42,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:13:42,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:13:42,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:13:42,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:13:41" (1/3) ... [2020-04-18 15:13:42,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e1c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:13:42, skipping insertion in model container [2020-04-18 15:13:42,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:42" (2/3) ... [2020-04-18 15:13:42,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e1c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:13:42, skipping insertion in model container [2020-04-18 15:13:42,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:13:42" (3/3) ... [2020-04-18 15:13:42,710 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2020-04-18 15:13:42,721 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:13:42,722 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:13:42,730 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:13:42,731 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:13:42,758 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,759 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,759 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,760 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,760 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,760 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,761 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,761 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,761 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,762 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,762 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,762 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,763 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,763 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,763 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,764 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,764 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,764 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,769 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,769 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,770 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,770 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,776 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,776 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,777 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,777 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,780 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,780 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,780 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,780 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:13:42,796 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:13:42,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:13:42,817 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:13:42,818 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:13:42,818 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:13:42,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:13:42,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:13:42,818 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:13:42,818 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:13:42,835 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:13:42,837 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:13:42,883 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:13:42,883 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:13:42,889 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:13:42,891 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:13:42,927 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:13:42,927 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:13:42,928 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:13:42,932 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:13:42,933 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:13:44,344 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 15:13:44,506 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-18 15:13:44,579 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 15:13:44,579 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 15:13:44,583 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 15:13:44,610 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:13:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:13:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:13:44,621 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:13:44,623 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:13:44,623 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:13:44,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:44,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 15:13:44,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:13:44,642 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [169920048] [2020-04-18 15:13:44,667 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:44,691 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:13:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:13:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:13:44,695 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:13:44,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:44,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 2 times [2020-04-18 15:13:44,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:44,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155423555] [2020-04-18 15:13:44,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:45,007 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 15:13:45,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155423555] [2020-04-18 15:13:45,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:45,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:13:45,011 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:45,012 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:45,015 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:13:45,015 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:45,022 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:45,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:13:45,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:13:45,029 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:13:45,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:45,033 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:13:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:13:45,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:13:45,034 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [169920048] [2020-04-18 15:13:45,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:13:45,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:13:45,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [169920048] [2020-04-18 15:13:45,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:13:45,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:13:45,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:13:45,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:13:45,043 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:13:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:45,079 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 15:13:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:13:45,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:13:45,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:13:45,097 INFO L225 Difference]: With dead ends: 282 [2020-04-18 15:13:45,097 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 15:13:45,098 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 15:13:45,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 15:13:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 15:13:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 15:13:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 15:13:45,167 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 15:13:45,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:13:45,169 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 15:13:45,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:13:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 15:13:45,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:13:45,170 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:13:45,171 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:13:45,171 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:13:45,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:45,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1299119847, now seen corresponding path program 1 times [2020-04-18 15:13:45,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:13:45,172 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [378341886] [2020-04-18 15:13:45,172 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:45,173 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-04-18 15:13:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 15:13:45,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:13:45,174 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:13:45,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:45,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1299119847, now seen corresponding path program 2 times [2020-04-18 15:13:45,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:45,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735811869] [2020-04-18 15:13:45,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:45,240 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 15:13:45,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735811869] [2020-04-18 15:13:45,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:45,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:13:45,241 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:45,243 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:45,244 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 15:13:45,245 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:45,258 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:45,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:13:45,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:13:45,260 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-04-18 15:13:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:45,272 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 15:13:45,272 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 15:13:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:13:45,273 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:13:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:45,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1298963637, now seen corresponding path program 3 times [2020-04-18 15:13:45,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:45,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213033291] [2020-04-18 15:13:45,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:45,366 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 15:13:45,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213033291] [2020-04-18 15:13:45,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:45,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:13:45,367 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:45,369 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:45,370 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:13:45,371 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:45,376 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:45,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:13:45,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:13:45,377 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-04-18 15:13:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:45,380 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 15:13:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 15:13:45,381 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:13:45,382 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [378341886] [2020-04-18 15:13:45,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:13:45,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:13:45,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [378341886] [2020-04-18 15:13:45,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:13:45,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:13:45,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:45,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:13:45,384 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 15:13:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:45,422 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-18 15:13:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:13:45,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:13:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:13:45,427 INFO L225 Difference]: With dead ends: 202 [2020-04-18 15:13:45,427 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 15:13:45,428 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:13:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 15:13:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 15:13:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 15:13:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 15:13:45,448 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-18 15:13:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:13:45,448 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 15:13:45,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:13:45,448 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 15:13:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:13:45,450 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:13:45,450 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:13:45,450 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:13:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1618060859, now seen corresponding path program 1 times [2020-04-18 15:13:45,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:13:45,451 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [372236901] [2020-04-18 15:13:45,452 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:45,452 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 15:13:45,453 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 15:13:45,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:13:45,453 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:13:45,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:45,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1618060859, now seen corresponding path program 2 times [2020-04-18 15:13:45,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:45,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006906487] [2020-04-18 15:13:45,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:45,489 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 15:13:45,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006906487] [2020-04-18 15:13:45,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:45,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:13:45,490 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:45,491 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:45,492 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-04-18 15:13:45,493 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:45,505 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:45,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:13:45,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:13:45,505 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-04-18 15:13:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:45,507 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2020-04-18 15:13:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-04-18 15:13:45,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:13:45,508 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [372236901] [2020-04-18 15:13:45,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:13:45,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:13:45,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [372236901] [2020-04-18 15:13:45,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:13:45,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:13:45,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:13:45,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:13:45,510 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-18 15:13:45,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:45,517 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-04-18 15:13:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:13:45,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 15:13:45,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:13:45,521 INFO L225 Difference]: With dead ends: 194 [2020-04-18 15:13:45,521 INFO L226 Difference]: Without dead ends: 194 [2020-04-18 15:13:45,521 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:13:45,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-18 15:13:45,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-18 15:13:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-18 15:13:45,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-04-18 15:13:45,536 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-04-18 15:13:45,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:13:45,536 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-04-18 15:13:45,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:13:45,536 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-04-18 15:13:45,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:13:45,538 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:13:45,538 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:13:45,538 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:13:45,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:45,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1106664046, now seen corresponding path program 1 times [2020-04-18 15:13:45,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:13:45,539 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [537439412] [2020-04-18 15:13:45,540 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:45,541 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 67 transitions. [2020-04-18 15:13:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 15:13:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:13:45,542 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:13:45,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:45,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1106664046, now seen corresponding path program 2 times [2020-04-18 15:13:45,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:45,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398364260] [2020-04-18 15:13:45,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:45,585 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 15:13:45,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398364260] [2020-04-18 15:13:45,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:45,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:13:45,587 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:45,588 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:45,591 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 55 transitions. [2020-04-18 15:13:45,591 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:45,599 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:45,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:45,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:13:45,599 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-04-18 15:13:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:45,610 INFO L93 Difference]: Finished difference Result 36 states and 67 transitions. [2020-04-18 15:13:45,610 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 67 transitions. [2020-04-18 15:13:45,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:13:45,611 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [537439412] [2020-04-18 15:13:45,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:13:45,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:13:45,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [537439412] [2020-04-18 15:13:45,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:13:45,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:13:45,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:45,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:13:45,612 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-04-18 15:13:45,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:45,651 INFO L93 Difference]: Finished difference Result 230 states and 596 transitions. [2020-04-18 15:13:45,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:13:45,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 15:13:45,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:13:45,654 INFO L225 Difference]: With dead ends: 230 [2020-04-18 15:13:45,654 INFO L226 Difference]: Without dead ends: 104 [2020-04-18 15:13:45,655 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 15:13:45,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-18 15:13:45,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-18 15:13:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-18 15:13:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-04-18 15:13:45,662 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 11 [2020-04-18 15:13:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:13:45,663 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-04-18 15:13:45,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:13:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-04-18 15:13:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:13:45,664 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:13:45,664 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:13:45,665 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:13:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:45,665 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-04-18 15:13:45,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:13:45,665 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [308201562] [2020-04-18 15:13:45,666 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:45,668 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 15:13:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 15:13:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:13:45,670 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:13:45,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:45,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1612262128, now seen corresponding path program 2 times [2020-04-18 15:13:45,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:45,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342120536] [2020-04-18 15:13:45,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:45,744 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 15:13:45,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342120536] [2020-04-18 15:13:45,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:45,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:13:45,745 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:45,746 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:45,751 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 63 transitions. [2020-04-18 15:13:45,751 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:45,761 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:13:45,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:45,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:13:45,762 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-04-18 15:13:45,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:45,776 INFO L93 Difference]: Finished difference Result 81 states and 181 transitions. [2020-04-18 15:13:45,776 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 181 transitions. [2020-04-18 15:13:45,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:13:45,777 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:13:45,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:45,777 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 3 times [2020-04-18 15:13:45,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:45,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574774023] [2020-04-18 15:13:45,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:45,840 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 15:13:45,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574774023] [2020-04-18 15:13:45,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:45,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:13:45,841 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:45,842 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:45,846 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-04-18 15:13:45,846 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:45,867 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:45,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:45,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:13:45,868 INFO L87 Difference]: Start difference. First operand 81 states and 181 transitions. Second operand 4 states. [2020-04-18 15:13:45,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:45,894 INFO L93 Difference]: Finished difference Result 123 states and 260 transitions. [2020-04-18 15:13:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 260 transitions. [2020-04-18 15:13:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:13:45,895 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:13:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:45,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 4 times [2020-04-18 15:13:45,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:45,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601994694] [2020-04-18 15:13:45,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:46,012 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 15:13:46,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601994694] [2020-04-18 15:13:46,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:46,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:13:46,014 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:46,015 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:46,018 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 15:13:46,018 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:46,047 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:13:46,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:46,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:13:46,048 INFO L87 Difference]: Start difference. First operand 123 states and 260 transitions. Second operand 4 states. [2020-04-18 15:13:46,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:46,065 INFO L93 Difference]: Finished difference Result 123 states and 260 transitions. [2020-04-18 15:13:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 260 transitions. [2020-04-18 15:13:46,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:13:46,066 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [308201562] [2020-04-18 15:13:46,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:13:46,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:13:46,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [308201562] [2020-04-18 15:13:46,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:13:46,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:13:46,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:13:46,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:13:46,068 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 8 states. [2020-04-18 15:13:46,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:46,801 INFO L93 Difference]: Finished difference Result 200 states and 435 transitions. [2020-04-18 15:13:46,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-04-18 15:13:46,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 15:13:46,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:13:46,803 INFO L225 Difference]: With dead ends: 200 [2020-04-18 15:13:46,803 INFO L226 Difference]: Without dead ends: 87 [2020-04-18 15:13:46,804 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=437, Invalid=1633, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 15:13:46,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-04-18 15:13:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-04-18 15:13:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-04-18 15:13:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-04-18 15:13:46,809 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-04-18 15:13:46,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:13:46,810 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-04-18 15:13:46,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:13:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-04-18 15:13:46,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:13:46,811 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:13:46,811 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:13:46,811 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:13:46,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:46,811 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-04-18 15:13:46,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:13:46,814 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1406150383] [2020-04-18 15:13:46,815 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:46,816 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 230 transitions. [2020-04-18 15:13:46,817 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 15:13:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:13:46,818 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:13:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:46,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1559482212, now seen corresponding path program 2 times [2020-04-18 15:13:46,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:46,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577669291] [2020-04-18 15:13:46,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:46,850 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 15:13:46,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577669291] [2020-04-18 15:13:46,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:46,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:13:46,851 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:46,852 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:46,856 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 50 transitions. [2020-04-18 15:13:46,856 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:46,864 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:13:46,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:46,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:13:46,865 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2020-04-18 15:13:46,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:46,879 INFO L93 Difference]: Finished difference Result 106 states and 247 transitions. [2020-04-18 15:13:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 247 transitions. [2020-04-18 15:13:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:13:46,880 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:13:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:46,880 INFO L82 PathProgramCache]: Analyzing trace with hash 184298484, now seen corresponding path program 3 times [2020-04-18 15:13:46,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:46,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609107876] [2020-04-18 15:13:46,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:46,910 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 15:13:46,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609107876] [2020-04-18 15:13:46,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:46,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:13:46,911 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:46,912 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:46,915 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 15:13:46,915 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:46,933 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:46,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:46,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:13:46,934 INFO L87 Difference]: Start difference. First operand 106 states and 247 transitions. Second operand 4 states. [2020-04-18 15:13:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:46,955 INFO L93 Difference]: Finished difference Result 169 states and 376 transitions. [2020-04-18 15:13:46,955 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 376 transitions. [2020-04-18 15:13:46,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:13:46,956 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:13:46,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:46,956 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 4 times [2020-04-18 15:13:46,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:46,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103927929] [2020-04-18 15:13:46,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:47,035 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 15:13:47,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103927929] [2020-04-18 15:13:47,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:47,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:13:47,036 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:47,039 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:47,042 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 15:13:47,042 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:47,113 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:13:47,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:13:47,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:13:47,114 INFO L87 Difference]: Start difference. First operand 169 states and 376 transitions. Second operand 6 states. [2020-04-18 15:13:47,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:47,145 INFO L93 Difference]: Finished difference Result 169 states and 376 transitions. [2020-04-18 15:13:47,145 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 376 transitions. [2020-04-18 15:13:47,146 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:13:47,146 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1406150383] [2020-04-18 15:13:47,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:13:47,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:13:47,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1406150383] [2020-04-18 15:13:47,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:13:47,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:13:47,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:13:47,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:13:47,149 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 10 states. [2020-04-18 15:13:47,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:47,445 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-04-18 15:13:47,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 15:13:47,446 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-04-18 15:13:47,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:13:47,447 INFO L225 Difference]: With dead ends: 90 [2020-04-18 15:13:47,447 INFO L226 Difference]: Without dead ends: 65 [2020-04-18 15:13:47,448 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2020-04-18 15:13:47,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-04-18 15:13:47,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-04-18 15:13:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-04-18 15:13:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-04-18 15:13:47,452 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-04-18 15:13:47,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:13:47,452 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-04-18 15:13:47,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:13:47,453 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-04-18 15:13:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:13:47,453 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:13:47,453 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:13:47,454 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:13:47,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:47,454 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-04-18 15:13:47,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:13:47,454 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1986472251] [2020-04-18 15:13:47,455 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:47,457 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 300 transitions. [2020-04-18 15:13:47,458 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-04-18 15:13:47,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:13:47,459 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:13:47,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:47,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1150340927, now seen corresponding path program 2 times [2020-04-18 15:13:47,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:47,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428885892] [2020-04-18 15:13:47,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:47,498 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 15:13:47,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428885892] [2020-04-18 15:13:47,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:47,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:13:47,499 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:47,500 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:47,503 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 43 transitions. [2020-04-18 15:13:47,503 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:47,512 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:47,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:47,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:13:47,512 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 4 states. [2020-04-18 15:13:47,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:47,534 INFO L93 Difference]: Finished difference Result 142 states and 346 transitions. [2020-04-18 15:13:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 346 transitions. [2020-04-18 15:13:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:13:47,535 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:13:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:47,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1469318319, now seen corresponding path program 3 times [2020-04-18 15:13:47,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:47,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002927629] [2020-04-18 15:13:47,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:47,586 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 15:13:47,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002927629] [2020-04-18 15:13:47,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:47,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:13:47,587 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:47,588 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:47,593 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 15:13:47,594 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:47,607 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:47,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:47,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:13:47,608 INFO L87 Difference]: Start difference. First operand 142 states and 346 transitions. Second operand 4 states. [2020-04-18 15:13:47,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:47,629 INFO L93 Difference]: Finished difference Result 238 states and 560 transitions. [2020-04-18 15:13:47,629 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 560 transitions. [2020-04-18 15:13:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:13:47,630 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:13:47,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:47,631 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 4 times [2020-04-18 15:13:47,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:47,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469598771] [2020-04-18 15:13:47,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:47,729 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 15:13:47,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469598771] [2020-04-18 15:13:47,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:47,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:13:47,730 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:47,731 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:47,735 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-04-18 15:13:47,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:47,817 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:13:47,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:13:47,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:13:47,818 INFO L87 Difference]: Start difference. First operand 238 states and 560 transitions. Second operand 7 states. [2020-04-18 15:13:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:47,897 INFO L93 Difference]: Finished difference Result 238 states and 560 transitions. [2020-04-18 15:13:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 560 transitions. [2020-04-18 15:13:47,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:13:47,898 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1986472251] [2020-04-18 15:13:47,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:13:47,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:13:47,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1986472251] [2020-04-18 15:13:47,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:13:47,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:13:47,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:13:47,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:13:47,900 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 11 states. [2020-04-18 15:13:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:48,157 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-04-18 15:13:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 15:13:48,157 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 15:13:48,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:13:48,158 INFO L225 Difference]: With dead ends: 62 [2020-04-18 15:13:48,158 INFO L226 Difference]: Without dead ends: 54 [2020-04-18 15:13:48,159 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2020-04-18 15:13:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-18 15:13:48,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-18 15:13:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-18 15:13:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-04-18 15:13:48,163 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-04-18 15:13:48,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:13:48,163 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-04-18 15:13:48,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:13:48,163 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-04-18 15:13:48,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:13:48,164 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:13:48,164 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:13:48,164 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:13:48,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:48,164 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-04-18 15:13:48,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:13:48,165 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1292018023] [2020-04-18 15:13:48,165 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:48,169 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:13:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:13:48,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:13:48,172 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:13:48,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:48,172 INFO L82 PathProgramCache]: Analyzing trace with hash 219391538, now seen corresponding path program 2 times [2020-04-18 15:13:48,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:48,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071603751] [2020-04-18 15:13:48,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:48,218 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 15:13:48,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071603751] [2020-04-18 15:13:48,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:48,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:13:48,219 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:48,220 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:48,224 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 66 transitions. [2020-04-18 15:13:48,224 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:48,232 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:48,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:48,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:13:48,233 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 4 states. [2020-04-18 15:13:48,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:48,246 INFO L93 Difference]: Finished difference Result 306 states and 842 transitions. [2020-04-18 15:13:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 842 transitions. [2020-04-18 15:13:48,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:13:48,247 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:13:48,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:48,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1211011038, now seen corresponding path program 3 times [2020-04-18 15:13:48,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:48,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227166293] [2020-04-18 15:13:48,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:48,274 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 15:13:48,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227166293] [2020-04-18 15:13:48,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:48,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:13:48,275 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:48,277 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:48,279 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-04-18 15:13:48,280 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:48,309 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:13:48,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:48,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:13:48,310 INFO L87 Difference]: Start difference. First operand 306 states and 842 transitions. Second operand 4 states. [2020-04-18 15:13:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:48,343 INFO L93 Difference]: Finished difference Result 492 states and 1275 transitions. [2020-04-18 15:13:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1275 transitions. [2020-04-18 15:13:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:13:48,345 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:13:48,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:48,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1031111838, now seen corresponding path program 4 times [2020-04-18 15:13:48,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:48,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902568729] [2020-04-18 15:13:48,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:48,398 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 15:13:48,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902568729] [2020-04-18 15:13:48,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:48,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:13:48,399 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:48,402 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:48,405 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 38 transitions. [2020-04-18 15:13:48,405 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:48,427 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:13:48,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:48,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:13:48,428 INFO L87 Difference]: Start difference. First operand 492 states and 1275 transitions. Second operand 4 states. [2020-04-18 15:13:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:48,452 INFO L93 Difference]: Finished difference Result 656 states and 1617 transitions. [2020-04-18 15:13:48,452 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1617 transitions. [2020-04-18 15:13:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:13:48,456 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:13:48,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:48,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1029331038, now seen corresponding path program 5 times [2020-04-18 15:13:48,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:48,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323805207] [2020-04-18 15:13:48,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:48,497 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 15:13:48,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323805207] [2020-04-18 15:13:48,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:48,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:13:48,498 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:48,499 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:48,502 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-04-18 15:13:48,503 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:48,514 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:48,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:48,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:13:48,515 INFO L87 Difference]: Start difference. First operand 656 states and 1617 transitions. Second operand 4 states. [2020-04-18 15:13:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:48,541 INFO L93 Difference]: Finished difference Result 1004 states and 2446 transitions. [2020-04-18 15:13:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 2446 transitions. [2020-04-18 15:13:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:13:48,544 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:13:48,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:48,545 INFO L82 PathProgramCache]: Analyzing trace with hash -410995550, now seen corresponding path program 6 times [2020-04-18 15:13:48,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:48,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391834619] [2020-04-18 15:13:48,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:48,604 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 15:13:48,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391834619] [2020-04-18 15:13:48,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:48,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:13:48,605 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:48,606 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:48,609 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 39 transitions. [2020-04-18 15:13:48,609 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:48,754 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:13:48,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:13:48,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:13:48,755 INFO L87 Difference]: Start difference. First operand 1004 states and 2446 transitions. Second operand 7 states. [2020-04-18 15:13:48,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:48,931 INFO L93 Difference]: Finished difference Result 1026 states and 2457 transitions. [2020-04-18 15:13:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 2457 transitions. [2020-04-18 15:13:48,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:13:48,935 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:13:48,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:48,935 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 7 times [2020-04-18 15:13:48,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:48,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534974467] [2020-04-18 15:13:48,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:48,979 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 15:13:48,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534974467] [2020-04-18 15:13:48,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:48,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:13:48,980 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:48,981 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:48,984 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-04-18 15:13:48,984 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:49,026 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:49,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:49,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2020-04-18 15:13:49,027 INFO L87 Difference]: Start difference. First operand 1026 states and 2457 transitions. Second operand 4 states. [2020-04-18 15:13:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:49,060 INFO L93 Difference]: Finished difference Result 1318 states and 3092 transitions. [2020-04-18 15:13:49,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 3092 transitions. [2020-04-18 15:13:49,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:13:49,068 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1292018023] [2020-04-18 15:13:49,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:13:49,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:13:49,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1292018023] [2020-04-18 15:13:49,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 15:13:49,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:13:49,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 15:13:49,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:13:49,070 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 16 states. [2020-04-18 15:13:50,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:50,042 INFO L93 Difference]: Finished difference Result 94 states and 162 transitions. [2020-04-18 15:13:50,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-04-18 15:13:50,043 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2020-04-18 15:13:50,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:13:50,043 INFO L225 Difference]: With dead ends: 94 [2020-04-18 15:13:50,043 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:13:50,045 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=590, Invalid=3832, Unknown=0, NotChecked=0, Total=4422 [2020-04-18 15:13:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:13:50,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:13:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:13:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:13:50,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:13:50,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:13:50,048 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:13:50,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 15:13:50,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:13:50,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:13:50,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:13:50 BasicIcfg [2020-04-18 15:13:50,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:13:50,053 INFO L168 Benchmark]: Toolchain (without parser) took 8548.47 ms. Allocated memory was 139.5 MB in the beginning and 302.5 MB in the end (delta: 163.1 MB). Free memory was 102.5 MB in the beginning and 249.6 MB in the end (delta: -147.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:13:50,054 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 15:13:50,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.66 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 160.2 MB in the end (delta: -59.7 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:13:50,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:13:50,055 INFO L168 Benchmark]: Boogie Preprocessor took 27.12 ms. Allocated memory is still 203.9 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:13:50,056 INFO L168 Benchmark]: RCFGBuilder took 427.66 ms. Allocated memory is still 203.9 MB. Free memory was 156.3 MB in the beginning and 134.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:13:50,057 INFO L168 Benchmark]: TraceAbstraction took 7349.50 ms. Allocated memory was 203.9 MB in the beginning and 302.5 MB in the end (delta: 98.6 MB). Free memory was 134.1 MB in the beginning and 249.6 MB in the end (delta: -115.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:13:50,059 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 668.66 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 160.2 MB in the end (delta: -59.7 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.12 ms. Allocated memory is still 203.9 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 427.66 ms. Allocated memory is still 203.9 MB. Free memory was 156.3 MB in the beginning and 134.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7349.50 ms. Allocated memory was 203.9 MB in the beginning and 302.5 MB in the end (delta: 98.6 MB). Free memory was 134.1 MB in the beginning and 249.6 MB in the end (delta: -115.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 166 SDtfs, 262 SDslu, 477 SDs, 0 SdLazy, 719 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 474 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2322 ImplicationChecksByTransitivity, 2.1s 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, 0 StatesRemovedByMinimization, 0 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...