/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_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:12:51,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:12:51,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:12:51,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:12:51,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:12:51,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:12:51,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:12:51,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:12:51,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:12:51,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:12:51,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:12:51,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:12:51,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:12:51,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:12:51,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:12:51,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:12:51,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:12:51,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:12:51,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:12:51,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:12:51,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:12:51,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:12:51,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:12:51,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:12:51,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:12:51,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:12:51,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:12:51,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:12:51,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:12:51,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:12:51,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:12:51,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:12:51,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:12:51,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:12:51,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:12:51,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:12:51,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:12:51,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:12:51,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:12:51,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:12:51,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:12:51,227 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 15:12:51,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:12:51,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:12:51,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:12:51,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:12:51,255 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:12:51,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:12:51,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:12:51,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:12:51,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:12:51,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:12:51,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:12:51,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:12:51,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:12:51,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:12:51,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:12:51,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:12:51,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:12:51,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:12:51,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:12:51,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:12:51,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:12:51,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:12:51,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:12:51,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:12:51,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:12:51,259 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:12:51,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:12:51,259 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:12:51,259 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:12:51,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:12:51,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:12:51,588 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:12:51,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:12:51,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:12:51,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:12:51,612 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:12:51,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-04-18 15:12:51,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04e4bcb5e/048cfb90939443f88dd0949405e832e0/FLAGb59d674d8 [2020-04-18 15:12:52,234 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:12:52,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-04-18 15:12:52,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04e4bcb5e/048cfb90939443f88dd0949405e832e0/FLAGb59d674d8 [2020-04-18 15:12:52,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04e4bcb5e/048cfb90939443f88dd0949405e832e0 [2020-04-18 15:12:52,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:12:52,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:12:52,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:12:52,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:12:52,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:12:52,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:12:52" (1/1) ... [2020-04-18 15:12:52,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783ee382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:52, skipping insertion in model container [2020-04-18 15:12:52,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:12:52" (1/1) ... [2020-04-18 15:12:52,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:12:52,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:12:53,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:12:53,163 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:12:53,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:12:53,308 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:12:53,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53 WrapperNode [2020-04-18 15:12:53,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:12:53,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:12:53,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:12:53,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:12:53,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53" (1/1) ... [2020-04-18 15:12:53,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53" (1/1) ... [2020-04-18 15:12:53,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:12:53,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:12:53,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:12:53,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:12:53,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53" (1/1) ... [2020-04-18 15:12:53,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53" (1/1) ... [2020-04-18 15:12:53,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53" (1/1) ... [2020-04-18 15:12:53,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53" (1/1) ... [2020-04-18 15:12:53,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53" (1/1) ... [2020-04-18 15:12:53,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53" (1/1) ... [2020-04-18 15:12:53,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53" (1/1) ... [2020-04-18 15:12:53,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:12:53,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:12:53,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:12:53,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:12:53,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53" (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 15:12:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:12:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:12:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:12:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:12:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:12:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:12:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:12:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:12:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:12:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:12:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:12:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:12:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:12:53,451 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 15:12:53,850 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:12:53,850 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:12:53,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:12:53 BoogieIcfgContainer [2020-04-18 15:12:53,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:12:53,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:12:53,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:12:53,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:12:53,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:12:52" (1/3) ... [2020-04-18 15:12:53,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f729473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:12:53, skipping insertion in model container [2020-04-18 15:12:53,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:12:53" (2/3) ... [2020-04-18 15:12:53,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f729473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:12:53, skipping insertion in model container [2020-04-18 15:12:53,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:12:53" (3/3) ... [2020-04-18 15:12:53,864 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2020-04-18 15:12:53,875 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:12:53,876 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:12:53,884 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:12:53,885 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:12:53,914 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,914 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,914 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,915 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,915 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,915 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,916 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,916 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,917 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,917 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,917 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,917 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,918 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,918 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,918 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,919 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,919 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,920 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,924 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,924 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,925 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,925 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,931 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,932 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,932 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,932 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,935 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,935 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,935 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,936 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:12:53,953 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:12:53,974 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:12:53,975 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:12:53,975 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:12:53,975 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:12:53,975 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:12:53,975 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:12:53,976 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:12:53,976 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:12:53,993 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:12:53,995 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:12:54,041 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:12:54,041 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:12:54,046 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 15:12:54,049 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:12:54,071 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:12:54,072 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:12:54,072 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 15:12:54,075 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:12:54,076 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:12:55,548 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 15:12:55,718 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-18 15:12:55,778 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 15:12:55,778 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 15:12:55,785 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 15:12:55,840 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:12:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:12:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:12:55,855 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:12:55,856 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:12:55,857 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:12:55,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:55,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 15:12:55,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:12:55,874 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [625849396] [2020-04-18 15:12:55,892 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:55,908 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:12:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:12:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:12:55,911 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:12:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:55,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 2 times [2020-04-18 15:12:55,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:55,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118482619] [2020-04-18 15:12:55,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:56,180 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 15:12:56,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118482619] [2020-04-18 15:12:56,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:56,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:12:56,183 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:56,184 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:56,186 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:12:56,187 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:56,196 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:12:56,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:12:56,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:12:56,202 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:12:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:56,206 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:12:56,206 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:12:56,207 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:12:56,207 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [625849396] [2020-04-18 15:12:56,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:12:56,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:12:56,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [625849396] [2020-04-18 15:12:56,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:12:56,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:12:56,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:12:56,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:12:56,216 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:12:56,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:56,259 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 15:12:56,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:12:56,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:12:56,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:12:56,277 INFO L225 Difference]: With dead ends: 282 [2020-04-18 15:12:56,277 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 15:12:56,279 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 15:12:56,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 15:12:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 15:12:56,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 15:12:56,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 15:12:56,358 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 15:12:56,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:12:56,359 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 15:12:56,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:12:56,359 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 15:12:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:12:56,361 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:12:56,362 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:12:56,362 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:12:56,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:56,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1299119847, now seen corresponding path program 1 times [2020-04-18 15:12:56,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:12:56,363 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [422897721] [2020-04-18 15:12:56,364 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:56,366 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-04-18 15:12:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 15:12:56,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:12:56,367 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:12:56,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:56,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1299119847, now seen corresponding path program 2 times [2020-04-18 15:12:56,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:56,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152543548] [2020-04-18 15:12:56,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:56,471 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 15:12:56,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152543548] [2020-04-18 15:12:56,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:56,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:12:56,472 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:56,473 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:56,475 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 15:12:56,476 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:56,481 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:12:56,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:12:56,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:12:56,482 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-04-18 15:12:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:56,489 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 15:12:56,489 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 15:12:56,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:12:56,490 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:12:56,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:56,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1298963637, now seen corresponding path program 3 times [2020-04-18 15:12:56,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:56,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543318858] [2020-04-18 15:12:56,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:56,562 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 15:12:56,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543318858] [2020-04-18 15:12:56,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:56,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:12:56,563 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:56,564 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:56,565 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:12:56,565 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:56,576 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:12:56,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:12:56,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:12:56,578 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-04-18 15:12:56,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:56,583 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 15:12:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 15:12:56,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:12:56,584 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [422897721] [2020-04-18 15:12:56,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:12:56,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:12:56,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [422897721] [2020-04-18 15:12:56,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:12:56,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:12:56,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:56,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:12:56,589 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 15:12:56,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:56,612 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-18 15:12:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:12:56,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:12:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:12:56,615 INFO L225 Difference]: With dead ends: 202 [2020-04-18 15:12:56,615 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 15:12:56,616 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 15:12:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 15:12:56,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 15:12:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 15:12:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 15:12:56,638 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-18 15:12:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:12:56,638 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 15:12:56,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:12:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 15:12:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:12:56,640 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:12:56,640 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:12:56,640 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:12:56,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:56,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1618060859, now seen corresponding path program 1 times [2020-04-18 15:12:56,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:12:56,641 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1641143039] [2020-04-18 15:12:56,642 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:56,642 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 15:12:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 15:12:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:12:56,643 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:12:56,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:56,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1618060859, now seen corresponding path program 2 times [2020-04-18 15:12:56,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:56,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237625394] [2020-04-18 15:12:56,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:56,697 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 15:12:56,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237625394] [2020-04-18 15:12:56,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:56,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:12:56,698 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:56,699 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:56,700 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-04-18 15:12:56,700 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:56,713 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:12:56,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:12:56,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:12:56,714 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-04-18 15:12:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:56,717 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2020-04-18 15:12:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-04-18 15:12:56,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:12:56,718 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1641143039] [2020-04-18 15:12:56,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:12:56,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:12:56,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1641143039] [2020-04-18 15:12:56,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:12:56,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:12:56,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:12:56,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:12:56,720 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-18 15:12:56,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:56,729 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-04-18 15:12:56,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:12:56,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 15:12:56,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:12:56,732 INFO L225 Difference]: With dead ends: 194 [2020-04-18 15:12:56,732 INFO L226 Difference]: Without dead ends: 194 [2020-04-18 15:12:56,733 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 15:12:56,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-18 15:12:56,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-18 15:12:56,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-18 15:12:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-04-18 15:12:56,746 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-04-18 15:12:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:12:56,747 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-04-18 15:12:56,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:12:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-04-18 15:12:56,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:12:56,749 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:12:56,749 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:12:56,749 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:12:56,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:56,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1106664046, now seen corresponding path program 1 times [2020-04-18 15:12:56,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:12:56,750 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1801690513] [2020-04-18 15:12:56,750 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:56,751 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 67 transitions. [2020-04-18 15:12:56,752 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 15:12:56,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:12:56,752 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:12:56,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:56,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1106664046, now seen corresponding path program 2 times [2020-04-18 15:12:56,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:56,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258862649] [2020-04-18 15:12:56,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:56,796 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 15:12:56,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258862649] [2020-04-18 15:12:56,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:56,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:12:56,797 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:56,798 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:56,801 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 55 transitions. [2020-04-18 15:12:56,802 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:56,809 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:12:56,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:56,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:12:56,810 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-04-18 15:12:56,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:56,821 INFO L93 Difference]: Finished difference Result 36 states and 67 transitions. [2020-04-18 15:12:56,821 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 67 transitions. [2020-04-18 15:12:56,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:12:56,822 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1801690513] [2020-04-18 15:12:56,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:12:56,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:12:56,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1801690513] [2020-04-18 15:12:56,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:12:56,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:12:56,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:56,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:12:56,823 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-04-18 15:12:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:56,845 INFO L93 Difference]: Finished difference Result 230 states and 596 transitions. [2020-04-18 15:12:56,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:12:56,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 15:12:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:12:56,847 INFO L225 Difference]: With dead ends: 230 [2020-04-18 15:12:56,847 INFO L226 Difference]: Without dead ends: 104 [2020-04-18 15:12:56,847 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 15:12:56,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-18 15:12:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-18 15:12:56,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-18 15:12:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-04-18 15:12:56,853 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 11 [2020-04-18 15:12:56,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:12:56,854 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-04-18 15:12:56,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:12:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-04-18 15:12:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:12:56,855 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:12:56,855 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:12:56,855 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:12:56,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:56,856 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-04-18 15:12:56,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:12:56,856 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1951960688] [2020-04-18 15:12:56,857 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:56,858 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 15:12:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 15:12:56,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:12:56,860 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:12:56,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:56,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1612262128, now seen corresponding path program 2 times [2020-04-18 15:12:56,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:56,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125120824] [2020-04-18 15:12:56,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:56,920 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 15:12:56,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125120824] [2020-04-18 15:12:56,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:56,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:12:56,921 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:56,926 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:56,931 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 63 transitions. [2020-04-18 15:12:56,932 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:56,961 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:12:56,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:56,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:12:56,962 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-04-18 15:12:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:56,974 INFO L93 Difference]: Finished difference Result 81 states and 181 transitions. [2020-04-18 15:12:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 181 transitions. [2020-04-18 15:12:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:12:56,975 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:12:56,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:56,976 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 3 times [2020-04-18 15:12:56,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:56,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70780878] [2020-04-18 15:12:56,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:57,017 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 15:12:57,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70780878] [2020-04-18 15:12:57,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:57,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:12:57,018 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:57,019 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:57,023 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-04-18 15:12:57,023 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:57,039 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:12:57,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:57,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:12:57,040 INFO L87 Difference]: Start difference. First operand 81 states and 181 transitions. Second operand 4 states. [2020-04-18 15:12:57,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:57,060 INFO L93 Difference]: Finished difference Result 123 states and 260 transitions. [2020-04-18 15:12:57,060 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 260 transitions. [2020-04-18 15:12:57,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:12:57,061 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:12:57,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:57,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 4 times [2020-04-18 15:12:57,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:57,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80803309] [2020-04-18 15:12:57,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:57,165 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 15:12:57,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80803309] [2020-04-18 15:12:57,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:57,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:12:57,166 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:57,167 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:57,171 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 15:12:57,171 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:57,199 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:12:57,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:57,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:12:57,201 INFO L87 Difference]: Start difference. First operand 123 states and 260 transitions. Second operand 4 states. [2020-04-18 15:12:57,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:57,224 INFO L93 Difference]: Finished difference Result 123 states and 260 transitions. [2020-04-18 15:12:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 260 transitions. [2020-04-18 15:12:57,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:12:57,225 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1951960688] [2020-04-18 15:12:57,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:12:57,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:12:57,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1951960688] [2020-04-18 15:12:57,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:12:57,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:12:57,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:12:57,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:12:57,227 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 8 states. [2020-04-18 15:12:57,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:57,947 INFO L93 Difference]: Finished difference Result 200 states and 435 transitions. [2020-04-18 15:12:57,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-04-18 15:12:57,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 15:12:57,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:12:57,949 INFO L225 Difference]: With dead ends: 200 [2020-04-18 15:12:57,949 INFO L226 Difference]: Without dead ends: 87 [2020-04-18 15:12:57,950 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 15:12:57,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-04-18 15:12:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-04-18 15:12:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-04-18 15:12:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-04-18 15:12:57,955 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-04-18 15:12:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:12:57,955 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-04-18 15:12:57,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:12:57,955 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-04-18 15:12:57,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:12:57,956 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:12:57,956 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:12:57,956 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:12:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:57,957 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-04-18 15:12:57,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:12:57,957 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1614981927] [2020-04-18 15:12:57,958 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:57,959 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 230 transitions. [2020-04-18 15:12:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 15:12:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:12:57,961 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:12:57,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1559482212, now seen corresponding path program 2 times [2020-04-18 15:12:57,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:57,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244685854] [2020-04-18 15:12:57,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:12:57,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244685854] [2020-04-18 15:12:57,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:57,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:12:57,995 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:57,996 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:57,999 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 50 transitions. [2020-04-18 15:12:58,000 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:58,006 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:12:58,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:58,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:12:58,007 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2020-04-18 15:12:58,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:58,020 INFO L93 Difference]: Finished difference Result 106 states and 247 transitions. [2020-04-18 15:12:58,021 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 247 transitions. [2020-04-18 15:12:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:12:58,021 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:12:58,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:58,022 INFO L82 PathProgramCache]: Analyzing trace with hash 184298484, now seen corresponding path program 3 times [2020-04-18 15:12:58,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:58,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396500514] [2020-04-18 15:12:58,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:58,052 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 15:12:58,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396500514] [2020-04-18 15:12:58,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:58,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:12:58,053 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:58,054 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:58,059 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 15:12:58,059 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:58,071 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:12:58,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:58,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:12:58,072 INFO L87 Difference]: Start difference. First operand 106 states and 247 transitions. Second operand 4 states. [2020-04-18 15:12:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:58,092 INFO L93 Difference]: Finished difference Result 169 states and 376 transitions. [2020-04-18 15:12:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 376 transitions. [2020-04-18 15:12:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:12:58,093 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:12:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:58,094 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 4 times [2020-04-18 15:12:58,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:58,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604025736] [2020-04-18 15:12:58,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:58,152 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 15:12:58,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604025736] [2020-04-18 15:12:58,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:58,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:12:58,153 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:58,154 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:58,160 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 15:12:58,160 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:58,241 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:12:58,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:12:58,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:12:58,242 INFO L87 Difference]: Start difference. First operand 169 states and 376 transitions. Second operand 6 states. [2020-04-18 15:12:58,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:58,285 INFO L93 Difference]: Finished difference Result 169 states and 376 transitions. [2020-04-18 15:12:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 376 transitions. [2020-04-18 15:12:58,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:12:58,286 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1614981927] [2020-04-18 15:12:58,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:12:58,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:12:58,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1614981927] [2020-04-18 15:12:58,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:12:58,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:12:58,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:12:58,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:12:58,288 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 10 states. [2020-04-18 15:12:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:58,598 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-04-18 15:12:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 15:12:58,600 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-04-18 15:12:58,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:12:58,601 INFO L225 Difference]: With dead ends: 90 [2020-04-18 15:12:58,601 INFO L226 Difference]: Without dead ends: 65 [2020-04-18 15:12:58,602 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 15:12:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-04-18 15:12:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-04-18 15:12:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-04-18 15:12:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-04-18 15:12:58,605 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-04-18 15:12:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:12:58,606 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-04-18 15:12:58,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:12:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-04-18 15:12:58,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:12:58,606 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:12:58,606 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:12:58,607 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:12:58,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:58,607 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-04-18 15:12:58,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:12:58,608 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1780364936] [2020-04-18 15:12:58,609 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:58,611 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 300 transitions. [2020-04-18 15:12:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-04-18 15:12:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:12:58,613 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:12:58,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:58,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1150340927, now seen corresponding path program 2 times [2020-04-18 15:12:58,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:58,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387838711] [2020-04-18 15:12:58,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:58,656 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 15:12:58,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387838711] [2020-04-18 15:12:58,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:58,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:12:58,657 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:58,659 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:58,662 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 43 transitions. [2020-04-18 15:12:58,662 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:58,669 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:12:58,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:58,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:12:58,670 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 4 states. [2020-04-18 15:12:58,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:58,686 INFO L93 Difference]: Finished difference Result 142 states and 346 transitions. [2020-04-18 15:12:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 346 transitions. [2020-04-18 15:12:58,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:12:58,688 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:12:58,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:58,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1469318319, now seen corresponding path program 3 times [2020-04-18 15:12:58,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:58,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549191738] [2020-04-18 15:12:58,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:58,727 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 15:12:58,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549191738] [2020-04-18 15:12:58,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:58,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:12:58,729 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:58,730 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:58,734 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 15:12:58,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:58,747 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:12:58,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:58,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:12:58,747 INFO L87 Difference]: Start difference. First operand 142 states and 346 transitions. Second operand 4 states. [2020-04-18 15:12:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:58,765 INFO L93 Difference]: Finished difference Result 238 states and 560 transitions. [2020-04-18 15:12:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 560 transitions. [2020-04-18 15:12:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:12:58,767 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:12:58,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:58,767 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 4 times [2020-04-18 15:12:58,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:58,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337192584] [2020-04-18 15:12:58,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:58,844 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 15:12:58,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337192584] [2020-04-18 15:12:58,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:58,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:12:58,846 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:58,848 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:58,851 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-04-18 15:12:58,852 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:58,939 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:12:58,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:12:58,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:12:58,940 INFO L87 Difference]: Start difference. First operand 238 states and 560 transitions. Second operand 7 states. [2020-04-18 15:12:59,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:59,064 INFO L93 Difference]: Finished difference Result 238 states and 560 transitions. [2020-04-18 15:12:59,064 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 560 transitions. [2020-04-18 15:12:59,065 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:12:59,065 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1780364936] [2020-04-18 15:12:59,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:12:59,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:12:59,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1780364936] [2020-04-18 15:12:59,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:12:59,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:12:59,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:12:59,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:12:59,067 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 11 states. [2020-04-18 15:12:59,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:59,335 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-04-18 15:12:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 15:12:59,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 15:12:59,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:12:59,337 INFO L225 Difference]: With dead ends: 62 [2020-04-18 15:12:59,337 INFO L226 Difference]: Without dead ends: 54 [2020-04-18 15:12:59,337 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2020-04-18 15:12:59,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-18 15:12:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-18 15:12:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-18 15:12:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-04-18 15:12:59,340 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-04-18 15:12:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:12:59,340 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-04-18 15:12:59,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:12:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-04-18 15:12:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:12:59,341 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:12:59,341 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 15:12:59,341 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:12:59,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:59,342 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-04-18 15:12:59,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:12:59,342 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [112991599] [2020-04-18 15:12:59,343 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:59,346 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:12:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:12:59,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:12:59,350 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:12:59,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:59,350 INFO L82 PathProgramCache]: Analyzing trace with hash 219391538, now seen corresponding path program 2 times [2020-04-18 15:12:59,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:59,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597688454] [2020-04-18 15:12:59,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:59,392 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 15:12:59,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597688454] [2020-04-18 15:12:59,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:59,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:12:59,393 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:59,394 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:59,398 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 66 transitions. [2020-04-18 15:12:59,398 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:59,405 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:12:59,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:59,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:12:59,406 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 4 states. [2020-04-18 15:12:59,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:59,418 INFO L93 Difference]: Finished difference Result 306 states and 842 transitions. [2020-04-18 15:12:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 842 transitions. [2020-04-18 15:12:59,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:12:59,419 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:12:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:59,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1211011038, now seen corresponding path program 3 times [2020-04-18 15:12:59,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:59,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285512212] [2020-04-18 15:12:59,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:59,452 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 15:12:59,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285512212] [2020-04-18 15:12:59,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:59,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:12:59,453 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:59,454 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:59,457 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-04-18 15:12:59,457 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:59,469 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:12:59,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:59,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:12:59,470 INFO L87 Difference]: Start difference. First operand 306 states and 842 transitions. Second operand 4 states. [2020-04-18 15:12:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:59,491 INFO L93 Difference]: Finished difference Result 492 states and 1275 transitions. [2020-04-18 15:12:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1275 transitions. [2020-04-18 15:12:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:12:59,493 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:12:59,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:59,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1031111838, now seen corresponding path program 4 times [2020-04-18 15:12:59,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:59,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555220270] [2020-04-18 15:12:59,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:59,521 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 15:12:59,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555220270] [2020-04-18 15:12:59,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:59,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:12:59,522 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:59,523 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:59,526 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 38 transitions. [2020-04-18 15:12:59,527 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:59,547 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:12:59,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:59,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:12:59,548 INFO L87 Difference]: Start difference. First operand 492 states and 1275 transitions. Second operand 4 states. [2020-04-18 15:12:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:59,572 INFO L93 Difference]: Finished difference Result 656 states and 1617 transitions. [2020-04-18 15:12:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1617 transitions. [2020-04-18 15:12:59,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:12:59,574 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:12:59,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:59,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1029331038, now seen corresponding path program 5 times [2020-04-18 15:12:59,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:59,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278442574] [2020-04-18 15:12:59,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:59,605 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 15:12:59,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278442574] [2020-04-18 15:12:59,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:59,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:12:59,606 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:59,608 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:59,611 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-04-18 15:12:59,611 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:59,622 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:12:59,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:12:59,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:12:59,623 INFO L87 Difference]: Start difference. First operand 656 states and 1617 transitions. Second operand 4 states. [2020-04-18 15:12:59,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:59,650 INFO L93 Difference]: Finished difference Result 1004 states and 2446 transitions. [2020-04-18 15:12:59,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 2446 transitions. [2020-04-18 15:12:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:12:59,653 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:12:59,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:12:59,653 INFO L82 PathProgramCache]: Analyzing trace with hash -410995550, now seen corresponding path program 6 times [2020-04-18 15:12:59,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:12:59,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923837354] [2020-04-18 15:12:59,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:12:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:12:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:12:59,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923837354] [2020-04-18 15:12:59,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:12:59,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:12:59,717 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:12:59,718 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:12:59,721 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 39 transitions. [2020-04-18 15:12:59,722 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:12:59,812 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:12:59,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:12:59,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:12:59,813 INFO L87 Difference]: Start difference. First operand 1004 states and 2446 transitions. Second operand 7 states. [2020-04-18 15:12:59,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:12:59,964 INFO L93 Difference]: Finished difference Result 1026 states and 2457 transitions. [2020-04-18 15:12:59,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 2457 transitions. [2020-04-18 15:13:00,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:13:00,002 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:13:00,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:13:00,003 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 7 times [2020-04-18 15:13:00,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:13:00,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469016888] [2020-04-18 15:13:00,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:13:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:13:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:13:00,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469016888] [2020-04-18 15:13:00,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:13:00,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:13:00,045 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:13:00,046 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:13:00,049 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-04-18 15:13:00,049 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:13:00,088 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:13:00,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:13:00,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2020-04-18 15:13:00,089 INFO L87 Difference]: Start difference. First operand 1026 states and 2457 transitions. Second operand 4 states. [2020-04-18 15:13:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:00,118 INFO L93 Difference]: Finished difference Result 1318 states and 3092 transitions. [2020-04-18 15:13:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 3092 transitions. [2020-04-18 15:13:00,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:13:00,127 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [112991599] [2020-04-18 15:13:00,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:13:00,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:13:00,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [112991599] [2020-04-18 15:13:00,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 15:13:00,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:13:00,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 15:13:00,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:13:00,130 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 16 states. [2020-04-18 15:13:01,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:13:01,083 INFO L93 Difference]: Finished difference Result 94 states and 162 transitions. [2020-04-18 15:13:01,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-04-18 15:13:01,084 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2020-04-18 15:13:01,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:13:01,085 INFO L225 Difference]: With dead ends: 94 [2020-04-18 15:13:01,085 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:13:01,087 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=590, Invalid=3832, Unknown=0, NotChecked=0, Total=4422 [2020-04-18 15:13:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:13:01,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:13:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:13:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:13:01,088 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:13:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:13:01,088 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:13:01,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 15:13:01,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:13:01,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:13:01,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:13:01 BasicIcfg [2020-04-18 15:13:01,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:13:01,095 INFO L168 Benchmark]: Toolchain (without parser) took 8533.92 ms. Allocated memory was 145.8 MB in the beginning and 314.6 MB in the end (delta: 168.8 MB). Free memory was 102.2 MB in the beginning and 112.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 158.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:13:01,095 INFO L168 Benchmark]: CDTParser took 1.76 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 15:13:01,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.98 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.3 MB in the beginning and 160.2 MB in the end (delta: -59.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:13:01,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.14 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:13:01,097 INFO L168 Benchmark]: Boogie Preprocessor took 28.18 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:13:01,097 INFO L168 Benchmark]: RCFGBuilder took 466.50 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 134.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:13:01,098 INFO L168 Benchmark]: TraceAbstraction took 7236.72 ms. Allocated memory was 203.4 MB in the beginning and 314.6 MB in the end (delta: 111.1 MB). Free memory was 133.9 MB in the beginning and 112.5 MB in the end (delta: 21.4 MB). Peak memory consumption was 132.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:13:01,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.76 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 724.98 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.3 MB in the beginning and 160.2 MB in the end (delta: -59.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.14 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.18 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.50 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 134.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7236.72 ms. Allocated memory was 203.4 MB in the beginning and 314.6 MB in the end (delta: 111.1 MB). Free memory was 133.9 MB in the beginning and 112.5 MB in the end (delta: 21.4 MB). Peak memory consumption was 132.6 MB. 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: 7.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, 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...