/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:06:28,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:06:28,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:06:28,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:06:28,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:06:28,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:06:28,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:06:28,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:06:28,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:06:28,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:06:28,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:06:28,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:06:28,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:06:28,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:06:28,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:06:28,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:06:28,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:06:28,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:06:28,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:06:28,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:06:28,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:06:28,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:06:28,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:06:28,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:06:28,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:06:28,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:06:28,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:06:28,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:06:28,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:06:28,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:06:28,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:06:28,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:06:28,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:06:28,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:06:28,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:06:28,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:06:28,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:06:28,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:06:28,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:06:28,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:06:28,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:06:28,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:06:28,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:06:28,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:06:28,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:06:28,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:06:28,407 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:06:28,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:06:28,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:06:28,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:06:28,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:06:28,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:06:28,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:06:28,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:06:28,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:06:28,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:06:28,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:06:28,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:06:28,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:06:28,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:06:28,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:06:28,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:06:28,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:06:28,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:06:28,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:06:28,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:06:28,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:06:28,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:06:28,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:06:28,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:06:28,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:06:28,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:06:28,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:06:28,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:06:28,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:06:28,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:06:28,781 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:06:28,781 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:06:28,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c419b5348/48d49a4110f24316aa8e120224a27045/FLAG45d1b45b1 [2020-10-12 20:06:29,328 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:06:29,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:06:29,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c419b5348/48d49a4110f24316aa8e120224a27045/FLAG45d1b45b1 [2020-10-12 20:06:29,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c419b5348/48d49a4110f24316aa8e120224a27045 [2020-10-12 20:06:29,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:06:29,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:06:29,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:06:29,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:06:29,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:06:29,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:06:29" (1/1) ... [2020-10-12 20:06:29,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16febf07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:29, skipping insertion in model container [2020-10-12 20:06:29,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:06:29" (1/1) ... [2020-10-12 20:06:29,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:06:29,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:06:30,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:06:30,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:06:30,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:06:30,335 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:06:30,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:30 WrapperNode [2020-10-12 20:06:30,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:06:30,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:06:30,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:06:30,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:06:30,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:30" (1/1) ... [2020-10-12 20:06:30,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:30" (1/1) ... [2020-10-12 20:06:30,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:30" (1/1) ... [2020-10-12 20:06:30,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:30" (1/1) ... [2020-10-12 20:06:30,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:30" (1/1) ... [2020-10-12 20:06:30,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:30" (1/1) ... [2020-10-12 20:06:30,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:30" (1/1) ... [2020-10-12 20:06:30,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:06:30,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:06:30,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:06:30,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:06:30,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 20:06:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:06:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:06:30,491 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:06:30,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:06:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:06:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:06:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:06:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:06:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:06:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:06:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:06:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:06:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:06:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:06:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:06:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:06:31,411 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:06:31,412 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:06:31,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:06:31 BoogieIcfgContainer [2020-10-12 20:06:31,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:06:31,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:06:31,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:06:31,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:06:31,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:06:29" (1/3) ... [2020-10-12 20:06:31,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ed872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:06:31, skipping insertion in model container [2020-10-12 20:06:31,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:06:30" (2/3) ... [2020-10-12 20:06:31,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ed872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:06:31, skipping insertion in model container [2020-10-12 20:06:31,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:06:31" (3/3) ... [2020-10-12 20:06:31,426 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:06:31,437 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:06:31,445 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:06:31,459 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:06:31,486 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:06:31,486 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:06:31,486 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:06:31,486 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:06:31,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:06:31,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:06:31,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:06:31,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:06:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states. [2020-10-12 20:06:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 20:06:31,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:31,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:31,528 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:31,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:31,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1170257874, now seen corresponding path program 1 times [2020-10-12 20:06:31,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:31,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272236387] [2020-10-12 20:06:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:32,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:32,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:34,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:34,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:06:34,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:06:34,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2897 [2020-10-12 20:06:34,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:06:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:06:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 20:06:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:06:35,182 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:35,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:35,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:35,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:35,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:35,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:06:35,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:35,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272236387] [2020-10-12 20:06:35,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:35,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:06:35,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730927168] [2020-10-12 20:06:35,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:06:35,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:35,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:06:35,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:35,282 INFO L87 Difference]: Start difference. First operand 220 states. Second operand 8 states. [2020-10-12 20:06:35,565 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 20:06:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:36,834 INFO L93 Difference]: Finished difference Result 878 states and 1413 transitions. [2020-10-12 20:06:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:06:36,836 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-12 20:06:36,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:36,857 INFO L225 Difference]: With dead ends: 878 [2020-10-12 20:06:36,858 INFO L226 Difference]: Without dead ends: 751 [2020-10-12 20:06:36,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:06:36,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2020-10-12 20:06:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 332. [2020-10-12 20:06:36,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-12 20:06:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 497 transitions. [2020-10-12 20:06:36,949 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 497 transitions. Word has length 84 [2020-10-12 20:06:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:36,950 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 497 transitions. [2020-10-12 20:06:36,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:06:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 497 transitions. [2020-10-12 20:06:36,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 20:06:36,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:36,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:36,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:06:36,958 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:36,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2097746024, now seen corresponding path program 1 times [2020-10-12 20:06:36,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:36,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656003941] [2020-10-12 20:06:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:37,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:39,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:39,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:06:39,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:06:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2085 [2020-10-12 20:06:39,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:06:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:06:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 20:06:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:39,414 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:39,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:39,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:39,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:39,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:39,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:39,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:06:39,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:39,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:39,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:39,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656003941] [2020-10-12 20:06:39,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:39,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:06:39,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399635437] [2020-10-12 20:06:39,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:06:39,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:39,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:06:39,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:39,495 INFO L87 Difference]: Start difference. First operand 332 states and 497 transitions. Second operand 8 states. [2020-10-12 20:06:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:42,458 INFO L93 Difference]: Finished difference Result 1428 states and 2214 transitions. [2020-10-12 20:06:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:06:42,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-12 20:06:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:42,469 INFO L225 Difference]: With dead ends: 1428 [2020-10-12 20:06:42,469 INFO L226 Difference]: Without dead ends: 1180 [2020-10-12 20:06:42,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-10-12 20:06:42,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1172. [2020-10-12 20:06:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2020-10-12 20:06:42,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1810 transitions. [2020-10-12 20:06:42,595 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1810 transitions. Word has length 85 [2020-10-12 20:06:42,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:42,598 INFO L479 AbstractCegarLoop]: Abstraction has 1172 states and 1810 transitions. [2020-10-12 20:06:42,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:06:42,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1810 transitions. [2020-10-12 20:06:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:06:42,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:42,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:42,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:06:42,611 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:42,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:42,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1493181435, now seen corresponding path program 1 times [2020-10-12 20:06:42,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:42,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346154139] [2020-10-12 20:06:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:42,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:43,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:43,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:06:43,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:06:43,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-12 20:06:43,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:06:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:06:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 20:06:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:43,523 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:43,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:43,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:43,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:43,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:43,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:43,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 20:06:43,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:06:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:06:43,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:43,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346154139] [2020-10-12 20:06:43,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:43,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:06:43,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128094221] [2020-10-12 20:06:43,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:06:43,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:43,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:06:43,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:06:43,646 INFO L87 Difference]: Start difference. First operand 1172 states and 1810 transitions. Second operand 6 states. [2020-10-12 20:06:43,848 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 20:06:45,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:45,313 INFO L93 Difference]: Finished difference Result 3211 states and 5014 transitions. [2020-10-12 20:06:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:06:45,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-12 20:06:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:45,334 INFO L225 Difference]: With dead ends: 3211 [2020-10-12 20:06:45,334 INFO L226 Difference]: Without dead ends: 2085 [2020-10-12 20:06:45,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-10-12 20:06:45,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2083. [2020-10-12 20:06:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-10-12 20:06:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 3233 transitions. [2020-10-12 20:06:45,573 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 3233 transitions. Word has length 86 [2020-10-12 20:06:45,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:45,573 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 3233 transitions. [2020-10-12 20:06:45,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:06:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 3233 transitions. [2020-10-12 20:06:45,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:06:45,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:45,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:45,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:06:45,582 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:45,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1984786538, now seen corresponding path program 1 times [2020-10-12 20:06:45,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:45,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567190741] [2020-10-12 20:06:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:45,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:46,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:46,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:06:46,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:06:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-12 20:06:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:06:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:06:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 20:06:46,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:06:46,492 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:46,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:46,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:46,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:46,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:06:46,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:06:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:06:46,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:46,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567190741] [2020-10-12 20:06:46,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:46,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:06:46,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077727685] [2020-10-12 20:06:46,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:06:46,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:46,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:06:46,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:06:46,573 INFO L87 Difference]: Start difference. First operand 2083 states and 3233 transitions. Second operand 6 states. [2020-10-12 20:06:46,781 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 20:06:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:48,378 INFO L93 Difference]: Finished difference Result 5840 states and 9114 transitions. [2020-10-12 20:06:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:06:48,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-12 20:06:48,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:48,404 INFO L225 Difference]: With dead ends: 5840 [2020-10-12 20:06:48,404 INFO L226 Difference]: Without dead ends: 3819 [2020-10-12 20:06:48,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:48,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2020-10-12 20:06:48,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3817. [2020-10-12 20:06:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3817 states. [2020-10-12 20:06:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3817 states to 3817 states and 5916 transitions. [2020-10-12 20:06:48,729 INFO L78 Accepts]: Start accepts. Automaton has 3817 states and 5916 transitions. Word has length 86 [2020-10-12 20:06:48,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:48,730 INFO L479 AbstractCegarLoop]: Abstraction has 3817 states and 5916 transitions. [2020-10-12 20:06:48,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:06:48,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3817 states and 5916 transitions. [2020-10-12 20:06:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:06:48,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:48,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:48,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:06:48,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:48,736 INFO L82 PathProgramCache]: Analyzing trace with hash 453259047, now seen corresponding path program 1 times [2020-10-12 20:06:48,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:48,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309716673] [2020-10-12 20:06:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:48,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:49,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:49,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:06:49,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:06:49,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-10-12 20:06:49,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:06:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:06:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 20:06:49,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:06:49,825 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:49,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:49,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:49,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:49,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:49,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:49,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 20:06:49,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:06:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:06:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:06:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:49,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309716673] [2020-10-12 20:06:49,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:49,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:06:49,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291257241] [2020-10-12 20:06:49,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:06:49,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:49,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:06:49,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:06:49,920 INFO L87 Difference]: Start difference. First operand 3817 states and 5916 transitions. Second operand 6 states. [2020-10-12 20:06:50,193 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 20:06:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:52,118 INFO L93 Difference]: Finished difference Result 10827 states and 16816 transitions. [2020-10-12 20:06:52,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:06:52,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-12 20:06:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:52,167 INFO L225 Difference]: With dead ends: 10827 [2020-10-12 20:06:52,167 INFO L226 Difference]: Without dead ends: 7095 [2020-10-12 20:06:52,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7095 states. [2020-10-12 20:06:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7095 to 7093. [2020-10-12 20:06:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7093 states. [2020-10-12 20:06:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 10940 transitions. [2020-10-12 20:06:52,865 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 10940 transitions. Word has length 86 [2020-10-12 20:06:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:52,867 INFO L479 AbstractCegarLoop]: Abstraction has 7093 states and 10940 transitions. [2020-10-12 20:06:52,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:06:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 10940 transitions. [2020-10-12 20:06:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:06:52,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:52,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:52,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:06:52,874 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:52,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1814791496, now seen corresponding path program 1 times [2020-10-12 20:06:52,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:52,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932432605] [2020-10-12 20:06:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:53,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:53,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:53,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:06:53,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:06:53,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-12 20:06:53,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:53,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:06:53,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:06:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 20:06:53,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 20:06:53,793 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:53,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:53,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:53,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:53,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:06:53,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:06:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:06:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:53,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932432605] [2020-10-12 20:06:53,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:53,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:06:53,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093300422] [2020-10-12 20:06:53,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:06:53,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:53,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:06:53,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:06:53,855 INFO L87 Difference]: Start difference. First operand 7093 states and 10940 transitions. Second operand 6 states. [2020-10-12 20:06:54,036 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 20:06:55,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:55,765 INFO L93 Difference]: Finished difference Result 20256 states and 31252 transitions. [2020-10-12 20:06:55,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:06:55,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-12 20:06:55,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:55,852 INFO L225 Difference]: With dead ends: 20256 [2020-10-12 20:06:55,853 INFO L226 Difference]: Without dead ends: 13278 [2020-10-12 20:06:55,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:06:55,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13278 states. [2020-10-12 20:06:56,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13278 to 13276. [2020-10-12 20:06:56,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13276 states. [2020-10-12 20:06:56,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13276 states to 13276 states and 20350 transitions. [2020-10-12 20:06:56,927 INFO L78 Accepts]: Start accepts. Automaton has 13276 states and 20350 transitions. Word has length 86 [2020-10-12 20:06:56,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:56,927 INFO L479 AbstractCegarLoop]: Abstraction has 13276 states and 20350 transitions. [2020-10-12 20:06:56,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:06:56,928 INFO L276 IsEmpty]: Start isEmpty. Operand 13276 states and 20350 transitions. [2020-10-12 20:06:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:06:56,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:56,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:56,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:06:56,937 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:56,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1573073481, now seen corresponding path program 1 times [2020-10-12 20:06:56,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:56,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885441985] [2020-10-12 20:06:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:56,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:57,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:06:57,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:06:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-12 20:06:57,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:06:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:06:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:06:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:06:57,862 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:57,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:57,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:57,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 20:06:57,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:06:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:06:57,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:06:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:57,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885441985] [2020-10-12 20:06:57,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:57,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:06:57,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678031683] [2020-10-12 20:06:57,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:06:57,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:57,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:06:57,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:06:57,945 INFO L87 Difference]: Start difference. First operand 13276 states and 20350 transitions. Second operand 6 states. [2020-10-12 20:06:58,194 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 20:07:00,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:00,591 INFO L93 Difference]: Finished difference Result 38565 states and 59175 transitions. [2020-10-12 20:07:00,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:07:00,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-12 20:07:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:00,666 INFO L225 Difference]: With dead ends: 38565 [2020-10-12 20:07:00,667 INFO L226 Difference]: Without dead ends: 25438 [2020-10-12 20:07:00,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:07:00,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25438 states. [2020-10-12 20:07:02,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25438 to 25436. [2020-10-12 20:07:02,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25436 states. [2020-10-12 20:07:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25436 states to 25436 states and 38841 transitions. [2020-10-12 20:07:02,995 INFO L78 Accepts]: Start accepts. Automaton has 25436 states and 38841 transitions. Word has length 86 [2020-10-12 20:07:02,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:02,995 INFO L479 AbstractCegarLoop]: Abstraction has 25436 states and 38841 transitions. [2020-10-12 20:07:02,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:07:02,995 INFO L276 IsEmpty]: Start isEmpty. Operand 25436 states and 38841 transitions. [2020-10-12 20:07:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:07:03,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:03,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:03,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:07:03,008 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:03,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:03,008 INFO L82 PathProgramCache]: Analyzing trace with hash 88371251, now seen corresponding path program 1 times [2020-10-12 20:07:03,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:03,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616409082] [2020-10-12 20:07:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:03,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:03,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:03,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:05,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:05,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:07:05,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:07:05,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2094 [2020-10-12 20:07:05,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:07:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 20:07:05,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:05,520 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:07:05,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:05,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:05,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:05,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:05,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:05,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 20:07:05,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:05,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:05,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616409082] [2020-10-12 20:07:05,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:05,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:07:05,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374381824] [2020-10-12 20:07:05,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:07:05,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:05,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:07:05,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:07:05,707 INFO L87 Difference]: Start difference. First operand 25436 states and 38841 transitions. Second operand 11 states. [2020-10-12 20:07:05,912 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 20:07:21,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:21,362 INFO L93 Difference]: Finished difference Result 249464 states and 381185 transitions. [2020-10-12 20:07:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 20:07:21,363 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-12 20:07:21,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:21,983 INFO L225 Difference]: With dead ends: 249464 [2020-10-12 20:07:21,983 INFO L226 Difference]: Without dead ends: 224676 [2020-10-12 20:07:22,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=339, Invalid=1143, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 20:07:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224676 states. [2020-10-12 20:07:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224676 to 25518. [2020-10-12 20:07:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25518 states. [2020-10-12 20:07:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25518 states to 25518 states and 38930 transitions. [2020-10-12 20:07:25,610 INFO L78 Accepts]: Start accepts. Automaton has 25518 states and 38930 transitions. Word has length 87 [2020-10-12 20:07:25,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:25,610 INFO L479 AbstractCegarLoop]: Abstraction has 25518 states and 38930 transitions. [2020-10-12 20:07:25,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:07:25,610 INFO L276 IsEmpty]: Start isEmpty. Operand 25518 states and 38930 transitions. [2020-10-12 20:07:25,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:07:25,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:25,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:25,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:07:25,619 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:25,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:25,619 INFO L82 PathProgramCache]: Analyzing trace with hash 20295635, now seen corresponding path program 1 times [2020-10-12 20:07:25,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:25,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660177579] [2020-10-12 20:07:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:25,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:25,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:27,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:27,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:07:27,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:07:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1760 [2020-10-12 20:07:27,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:07:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 20:07:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:27,726 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:07:27,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:27,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:27,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:27,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:27,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:07:27,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:27,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:27,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660177579] [2020-10-12 20:07:27,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:27,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:07:27,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564316904] [2020-10-12 20:07:27,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:07:27,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:27,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:07:27,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:07:27,789 INFO L87 Difference]: Start difference. First operand 25518 states and 38930 transitions. Second operand 11 states. [2020-10-12 20:07:28,031 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 20:07:41,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:41,211 INFO L93 Difference]: Finished difference Result 128143 states and 194908 transitions. [2020-10-12 20:07:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:07:41,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-12 20:07:41,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:41,455 INFO L225 Difference]: With dead ends: 128143 [2020-10-12 20:07:41,456 INFO L226 Difference]: Without dead ends: 107655 [2020-10-12 20:07:41,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:07:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107655 states. [2020-10-12 20:07:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107655 to 25813. [2020-10-12 20:07:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25813 states. [2020-10-12 20:07:44,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25813 states to 25813 states and 39304 transitions. [2020-10-12 20:07:44,850 INFO L78 Accepts]: Start accepts. Automaton has 25813 states and 39304 transitions. Word has length 87 [2020-10-12 20:07:44,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:44,851 INFO L479 AbstractCegarLoop]: Abstraction has 25813 states and 39304 transitions. [2020-10-12 20:07:44,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:07:44,851 INFO L276 IsEmpty]: Start isEmpty. Operand 25813 states and 39304 transitions. [2020-10-12 20:07:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:07:44,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:44,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:44,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:07:44,859 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:44,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1569140595, now seen corresponding path program 1 times [2020-10-12 20:07:44,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:44,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385439446] [2020-10-12 20:07:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:44,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:45,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:45,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:46,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:46,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:07:46,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:07:46,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1467 [2020-10-12 20:07:46,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:07:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 20:07:46,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:07:46,725 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:07:46,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:46,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:46,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:46,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:07:46,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:46,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385439446] [2020-10-12 20:07:46,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:46,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:07:46,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359511720] [2020-10-12 20:07:46,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:07:46,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:46,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:07:46,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:07:46,788 INFO L87 Difference]: Start difference. First operand 25813 states and 39304 transitions. Second operand 11 states. [2020-10-12 20:07:47,104 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 20:08:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:02,503 INFO L93 Difference]: Finished difference Result 116452 states and 177033 transitions. [2020-10-12 20:08:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:08:02,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-12 20:08:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:02,662 INFO L225 Difference]: With dead ends: 116452 [2020-10-12 20:08:02,662 INFO L226 Difference]: Without dead ends: 100661 [2020-10-12 20:08:02,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:08:02,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100661 states. [2020-10-12 20:08:06,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100661 to 26343. [2020-10-12 20:08:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26343 states. [2020-10-12 20:08:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26343 states to 26343 states and 39996 transitions. [2020-10-12 20:08:06,222 INFO L78 Accepts]: Start accepts. Automaton has 26343 states and 39996 transitions. Word has length 87 [2020-10-12 20:08:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:06,222 INFO L479 AbstractCegarLoop]: Abstraction has 26343 states and 39996 transitions. [2020-10-12 20:08:06,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:08:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 26343 states and 39996 transitions. [2020-10-12 20:08:06,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:08:06,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:06,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:06,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:08:06,232 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:06,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:06,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1703997203, now seen corresponding path program 1 times [2020-10-12 20:08:06,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:06,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021909801] [2020-10-12 20:08:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:06,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:07,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:07,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:08:07,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:08:07,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-12 20:08:07,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:08:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:08:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 20:08:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:07,903 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:08:07,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:07,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:07,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:07,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:07,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 20:08:07,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:08:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:08:07,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:08:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:08:08,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021909801] [2020-10-12 20:08:08,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:08,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:08:08,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152400554] [2020-10-12 20:08:08,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:08:08,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:08,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:08:08,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:08:08,010 INFO L87 Difference]: Start difference. First operand 26343 states and 39996 transitions. Second operand 11 states. [2020-10-12 20:08:08,328 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 20:08:24,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:24,168 INFO L93 Difference]: Finished difference Result 109354 states and 166828 transitions. [2020-10-12 20:08:24,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 20:08:24,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-12 20:08:24,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:24,281 INFO L225 Difference]: With dead ends: 109354 [2020-10-12 20:08:24,281 INFO L226 Difference]: Without dead ends: 98504 [2020-10-12 20:08:24,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-12 20:08:24,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98504 states. [2020-10-12 20:08:29,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98504 to 27131. [2020-10-12 20:08:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27131 states. [2020-10-12 20:08:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27131 states to 27131 states and 41082 transitions. [2020-10-12 20:08:29,347 INFO L78 Accepts]: Start accepts. Automaton has 27131 states and 41082 transitions. Word has length 87 [2020-10-12 20:08:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:29,348 INFO L479 AbstractCegarLoop]: Abstraction has 27131 states and 41082 transitions. [2020-10-12 20:08:29,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:08:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 27131 states and 41082 transitions. [2020-10-12 20:08:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:08:29,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:29,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:29,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:08:29,358 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:29,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash 749399731, now seen corresponding path program 1 times [2020-10-12 20:08:29,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:29,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542752028] [2020-10-12 20:08:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:29,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:29,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:31,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:31,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:08:31,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:08:31,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2138 [2020-10-12 20:08:31,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:08:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:08:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 20:08:31,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:31,860 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:08:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:31,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:31,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:31,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:31,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:08:31,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:08:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:08:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:08:31,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542752028] [2020-10-12 20:08:31,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:31,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:08:31,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058769667] [2020-10-12 20:08:31,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:08:31,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:31,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:08:31,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:08:31,928 INFO L87 Difference]: Start difference. First operand 27131 states and 41082 transitions. Second operand 11 states. [2020-10-12 20:08:32,153 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 20:09:00,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:09:00,778 INFO L93 Difference]: Finished difference Result 185525 states and 283004 transitions. [2020-10-12 20:09:00,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 20:09:00,779 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-12 20:09:00,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:09:01,018 INFO L225 Difference]: With dead ends: 185525 [2020-10-12 20:09:01,018 INFO L226 Difference]: Without dead ends: 179542 [2020-10-12 20:09:01,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 20:09:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179542 states. [2020-10-12 20:09:07,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179542 to 26893. [2020-10-12 20:09:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26893 states. [2020-10-12 20:09:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26893 states to 26893 states and 40728 transitions. [2020-10-12 20:09:07,349 INFO L78 Accepts]: Start accepts. Automaton has 26893 states and 40728 transitions. Word has length 87 [2020-10-12 20:09:07,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:09:07,349 INFO L479 AbstractCegarLoop]: Abstraction has 26893 states and 40728 transitions. [2020-10-12 20:09:07,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:09:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 26893 states and 40728 transitions. [2020-10-12 20:09:07,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:09:07,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:09:07,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:09:07,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:09:07,357 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:09:07,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:09:07,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1283726391, now seen corresponding path program 1 times [2020-10-12 20:09:07,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:09:07,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845273632] [2020-10-12 20:09:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:09:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:07,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:07,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:07,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:09:07,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 20:09:07,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:09:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:09:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 20:09:07,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:07,716 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:09:07,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:09:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:07,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:07,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:09:07,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:07,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:09:07,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:09:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:09:07,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:09:07,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:09:07,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845273632] [2020-10-12 20:09:07,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:09:07,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:09:07,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647136419] [2020-10-12 20:09:07,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:09:07,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:09:07,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:09:07,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:09:07,746 INFO L87 Difference]: Start difference. First operand 26893 states and 40728 transitions. Second operand 5 states. [2020-10-12 20:09:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:09:16,345 INFO L93 Difference]: Finished difference Result 52015 states and 78841 transitions. [2020-10-12 20:09:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:09:16,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:09:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:09:16,396 INFO L225 Difference]: With dead ends: 52015 [2020-10-12 20:09:16,396 INFO L226 Difference]: Without dead ends: 52013 [2020-10-12 20:09:16,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:09:16,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52013 states. [2020-10-12 20:09:20,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52013 to 27533. [2020-10-12 20:09:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27533 states. [2020-10-12 20:09:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27533 states to 27533 states and 41368 transitions. [2020-10-12 20:09:20,643 INFO L78 Accepts]: Start accepts. Automaton has 27533 states and 41368 transitions. Word has length 88 [2020-10-12 20:09:20,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:09:20,644 INFO L479 AbstractCegarLoop]: Abstraction has 27533 states and 41368 transitions. [2020-10-12 20:09:20,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:09:20,644 INFO L276 IsEmpty]: Start isEmpty. Operand 27533 states and 41368 transitions. [2020-10-12 20:09:20,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:09:20,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:09:20,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:09:20,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:09:20,653 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:09:20,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:09:20,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1413771914, now seen corresponding path program 1 times [2020-10-12 20:09:20,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:09:20,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140405547] [2020-10-12 20:09:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:09:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:21,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:22,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:22,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:09:22,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:09:22,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1769 [2020-10-12 20:09:22,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:09:22,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:09:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 20:09:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:09:22,868 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:09:22,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:09:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:22,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:22,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:22,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:09:22,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:09:22,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:09:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:09:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:09:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:09:22,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140405547] [2020-10-12 20:09:22,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:09:22,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:09:22,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837325402] [2020-10-12 20:09:22,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:09:22,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:09:22,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:09:22,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:09:22,911 INFO L87 Difference]: Start difference. First operand 27533 states and 41368 transitions. Second operand 10 states. [2020-10-12 20:09:23,134 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:09:43,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:09:43,148 INFO L93 Difference]: Finished difference Result 126366 states and 190972 transitions. [2020-10-12 20:09:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 20:09:43,148 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-10-12 20:09:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:09:43,271 INFO L225 Difference]: With dead ends: 126366 [2020-10-12 20:09:43,272 INFO L226 Difference]: Without dead ends: 103737 [2020-10-12 20:09:43,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:09:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103737 states. [2020-10-12 20:09:52,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103737 to 39824. [2020-10-12 20:09:52,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39824 states. [2020-10-12 20:09:52,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39824 states to 39824 states and 59966 transitions. [2020-10-12 20:09:52,138 INFO L78 Accepts]: Start accepts. Automaton has 39824 states and 59966 transitions. Word has length 89 [2020-10-12 20:09:52,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:09:52,138 INFO L479 AbstractCegarLoop]: Abstraction has 39824 states and 59966 transitions. [2020-10-12 20:09:52,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:09:52,138 INFO L276 IsEmpty]: Start isEmpty. Operand 39824 states and 59966 transitions. [2020-10-12 20:09:52,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:09:52,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:09:52,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:09:52,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:09:52,147 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:09:52,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:09:52,148 INFO L82 PathProgramCache]: Analyzing trace with hash -862358602, now seen corresponding path program 1 times [2020-10-12 20:09:52,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:09:52,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070471710] [2020-10-12 20:09:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:09:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:52,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:52,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:52,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:09:52,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 20:09:52,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:09:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 20:09:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 20:09:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:52,510 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:09:52,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:09:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:52,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:52,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:09:52,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:09:52,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:09:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:09:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:09:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:09:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:09:52,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070471710] [2020-10-12 20:09:52,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:09:52,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:09:52,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209001561] [2020-10-12 20:09:52,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:09:52,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:09:52,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:09:52,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:09:52,563 INFO L87 Difference]: Start difference. First operand 39824 states and 59966 transitions. Second operand 5 states. [2020-10-12 20:09:52,764 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 20:10:06,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:10:06,873 INFO L93 Difference]: Finished difference Result 109124 states and 164336 transitions. [2020-10-12 20:10:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:10:06,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:10:06,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:10:06,963 INFO L225 Difference]: With dead ends: 109124 [2020-10-12 20:10:06,963 INFO L226 Difference]: Without dead ends: 71810 [2020-10-12 20:10:06,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:10:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71810 states.