/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=NARROWEST --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.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:29:19,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:29:19,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:29:19,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:29:19,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:29:19,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:29:19,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:29:19,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:29:19,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:29:19,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:29:19,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:29:19,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:29:19,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:29:19,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:29:19,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:29:19,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:29:19,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:29:19,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:29:19,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:29:19,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:29:19,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:29:19,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:29:19,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:29:19,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:29:19,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:29:19,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:29:19,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:29:19,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:29:19,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:29:19,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:29:19,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:29:19,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:29:19,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:29:19,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:29:19,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:29:19,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:29:19,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:29:19,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:29:19,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:29:19,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:29:19,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:29:19,382 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 [2020-10-13 14:29:19,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:29:19,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:29:19,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:29:19,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:29:19,425 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:29:19,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:29:19,426 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:29:19,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:29:19,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:29:19,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:29:19,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:29:19,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:29:19,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:29:19,429 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:29:19,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:29:19,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:29:19,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:29:19,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:29:19,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:29:19,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:29:19,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:29:19,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:29:19,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:29:19,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:29:19,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:29:19,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:29:19,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:29:19,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:29:19,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:29:19,432 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:29:19,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:29:19,756 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:29:19,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:29:19,761 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:29:19,762 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:29:19,763 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-13 14:29:19,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/248722bb6/d9185bc7a5d043419cf18bdae252e613/FLAG6c5ae8128 [2020-10-13 14:29:20,324 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:29:20,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-13 14:29:20,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/248722bb6/d9185bc7a5d043419cf18bdae252e613/FLAG6c5ae8128 [2020-10-13 14:29:20,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/248722bb6/d9185bc7a5d043419cf18bdae252e613 [2020-10-13 14:29:20,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:29:20,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:29:20,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:29:20,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:29:20,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:29:20,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:29:20" (1/1) ... [2020-10-13 14:29:20,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2210ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:20, skipping insertion in model container [2020-10-13 14:29:20,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:29:20" (1/1) ... [2020-10-13 14:29:20,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:29:20,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:29:21,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:29:21,298 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:29:21,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:29:21,456 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:29:21,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:21 WrapperNode [2020-10-13 14:29:21,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:29:21,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:29:21,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:29:21,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:29:21,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:21" (1/1) ... [2020-10-13 14:29:21,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:21" (1/1) ... [2020-10-13 14:29:21,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:21" (1/1) ... [2020-10-13 14:29:21,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:21" (1/1) ... [2020-10-13 14:29:21,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:21" (1/1) ... [2020-10-13 14:29:21,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:21" (1/1) ... [2020-10-13 14:29:21,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:21" (1/1) ... [2020-10-13 14:29:21,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:29:21,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:29:21,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:29:21,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:29:21,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:21" (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 [2020-10-13 14:29:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:29:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:29:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:29:21,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:29:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:29:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:29:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:29:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:29:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:29:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:29:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:29:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:29:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:29:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:29:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:29:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:29:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:29:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:29:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-13 14:29:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:29:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:29:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:29:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:29:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:29:22,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:29:22,699 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:29:22,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:29:22 BoogieIcfgContainer [2020-10-13 14:29:22,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:29:22,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:29:22,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:29:22,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:29:22,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:29:20" (1/3) ... [2020-10-13 14:29:22,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e2763c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:29:22, skipping insertion in model container [2020-10-13 14:29:22,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:29:21" (2/3) ... [2020-10-13 14:29:22,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e2763c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:29:22, skipping insertion in model container [2020-10-13 14:29:22,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:29:22" (3/3) ... [2020-10-13 14:29:22,714 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-13 14:29:22,725 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:29:22,734 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:29:22,748 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:29:22,773 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:29:22,774 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:29:22,774 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:29:22,774 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:29:22,774 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:29:22,775 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:29:22,775 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:29:22,775 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:29:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-10-13 14:29:22,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 14:29:22,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:22,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:22,812 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:22,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1581776616, now seen corresponding path program 1 times [2020-10-13 14:29:22,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:22,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003322220] [2020-10-13 14:29:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:23,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:23,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:24,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:25,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:25,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:26,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:26,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:27,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:27,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:27,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:28,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:28,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:28,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 14:29:28,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:29:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 14:29:28,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:29:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 14:29:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:29:28,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:29:28,647 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:29:28,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:28,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:28,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:28,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:28,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:28,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:29:28,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:28,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:28,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003322220] [2020-10-13 14:29:28,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:28,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:29:28,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667356620] [2020-10-13 14:29:28,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:29:28,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:28,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:29:28,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:29:28,784 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 4 states. [2020-10-13 14:29:29,220 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:29:30,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:30,582 INFO L93 Difference]: Finished difference Result 403 states and 670 transitions. [2020-10-13 14:29:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:29:30,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-13 14:29:30,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:30,600 INFO L225 Difference]: With dead ends: 403 [2020-10-13 14:29:30,601 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 14:29:30,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:29:30,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 14:29:30,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2020-10-13 14:29:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-13 14:29:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 441 transitions. [2020-10-13 14:29:30,674 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 441 transitions. Word has length 112 [2020-10-13 14:29:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:30,675 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 441 transitions. [2020-10-13 14:29:30,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:29:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 441 transitions. [2020-10-13 14:29:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 14:29:30,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:30,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:30,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:29:30,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:30,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:30,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1235271490, now seen corresponding path program 1 times [2020-10-13 14:29:30,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:30,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067768341] [2020-10-13 14:29:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:30,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:30,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:30,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:31,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:31,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:32,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:33,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:33,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:34,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:34,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:35,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:35,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 14:29:35,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:29:35,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 14:29:35,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:29:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:29:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:29:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:36,155 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:29:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:36,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:36,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:36,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:36,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:36,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:29:36,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:36,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:36,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067768341] [2020-10-13 14:29:36,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:36,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:29:36,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638877247] [2020-10-13 14:29:36,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:29:36,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:36,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:29:36,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:29:36,223 INFO L87 Difference]: Start difference. First operand 308 states and 441 transitions. Second operand 7 states. [2020-10-13 14:29:36,488 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:29:38,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:38,335 INFO L93 Difference]: Finished difference Result 1821 states and 2813 transitions. [2020-10-13 14:29:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:29:38,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-13 14:29:38,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:38,351 INFO L225 Difference]: With dead ends: 1821 [2020-10-13 14:29:38,351 INFO L226 Difference]: Without dead ends: 1586 [2020-10-13 14:29:38,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:29:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-10-13 14:29:38,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 730. [2020-10-13 14:29:38,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2020-10-13 14:29:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1099 transitions. [2020-10-13 14:29:38,455 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1099 transitions. Word has length 114 [2020-10-13 14:29:38,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:38,456 INFO L479 AbstractCegarLoop]: Abstraction has 730 states and 1099 transitions. [2020-10-13 14:29:38,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:29:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1099 transitions. [2020-10-13 14:29:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 14:29:38,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:38,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:38,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:29:38,466 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:38,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:38,466 INFO L82 PathProgramCache]: Analyzing trace with hash 892116020, now seen corresponding path program 1 times [2020-10-13 14:29:38,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:38,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395007305] [2020-10-13 14:29:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:38,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:39,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:39,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:42,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:43,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:43,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 14:29:43,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:29:43,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:29:43,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:29:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:29:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:29:43,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:43,769 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:29:43,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:43,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:43,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:43,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:29:43,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:43,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:43,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:43,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395007305] [2020-10-13 14:29:43,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:43,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:29:43,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092948235] [2020-10-13 14:29:43,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:29:43,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:43,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:29:43,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:29:43,819 INFO L87 Difference]: Start difference. First operand 730 states and 1099 transitions. Second operand 7 states. [2020-10-13 14:29:44,085 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:29:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:45,574 INFO L93 Difference]: Finished difference Result 4904 states and 7665 transitions. [2020-10-13 14:29:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:29:45,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-13 14:29:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:45,600 INFO L225 Difference]: With dead ends: 4904 [2020-10-13 14:29:45,600 INFO L226 Difference]: Without dead ends: 4266 [2020-10-13 14:29:45,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:29:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2020-10-13 14:29:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 1866. [2020-10-13 14:29:45,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1866 states. [2020-10-13 14:29:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2873 transitions. [2020-10-13 14:29:45,748 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2873 transitions. Word has length 115 [2020-10-13 14:29:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:45,749 INFO L479 AbstractCegarLoop]: Abstraction has 1866 states and 2873 transitions. [2020-10-13 14:29:45,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:29:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2873 transitions. [2020-10-13 14:29:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 14:29:45,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:45,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:45,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:29:45,752 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:45,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:45,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1547786483, now seen corresponding path program 1 times [2020-10-13 14:29:45,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:45,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495997099] [2020-10-13 14:29:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:45,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:45,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:46,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:46,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:50,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:50,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 14:29:50,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:29:50,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:29:50,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:29:50,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:29:50,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 14:29:50,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:51,055 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:29:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:51,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:51,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:51,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:51,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:51,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:29:51,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:51,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495997099] [2020-10-13 14:29:51,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:51,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:29:51,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278994841] [2020-10-13 14:29:51,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:29:51,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:51,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:29:51,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:29:51,106 INFO L87 Difference]: Start difference. First operand 1866 states and 2873 transitions. Second operand 7 states. [2020-10-13 14:29:51,346 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:29:53,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:53,174 INFO L93 Difference]: Finished difference Result 14661 states and 22953 transitions. [2020-10-13 14:29:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:29:53,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-13 14:29:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:53,238 INFO L225 Difference]: With dead ends: 14661 [2020-10-13 14:29:53,239 INFO L226 Difference]: Without dead ends: 12860 [2020-10-13 14:29:53,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:29:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12860 states. [2020-10-13 14:29:53,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12860 to 5318. [2020-10-13 14:29:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5318 states. [2020-10-13 14:29:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 8249 transitions. [2020-10-13 14:29:53,573 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 8249 transitions. Word has length 116 [2020-10-13 14:29:53,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:53,574 INFO L479 AbstractCegarLoop]: Abstraction has 5318 states and 8249 transitions. [2020-10-13 14:29:53,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:29:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 8249 transitions. [2020-10-13 14:29:53,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 14:29:53,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:53,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:29:53,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:29:53,581 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:53,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:53,581 INFO L82 PathProgramCache]: Analyzing trace with hash 596080786, now seen corresponding path program 1 times [2020-10-13 14:29:53,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:53,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785434029] [2020-10-13 14:29:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:53,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:53,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:58,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:58,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:58,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:58,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 14:29:58,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:29:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:29:58,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:29:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:29:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:29:58,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:58,963 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:29:58,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:58,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:58,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:58,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:58,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:29:58,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:58,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:29:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:59,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785434029] [2020-10-13 14:29:59,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:59,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:29:59,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492861872] [2020-10-13 14:29:59,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:29:59,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:59,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:29:59,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:29:59,035 INFO L87 Difference]: Start difference. First operand 5318 states and 8249 transitions. Second operand 7 states. [2020-10-13 14:29:59,403 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:30:01,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:01,990 INFO L93 Difference]: Finished difference Result 25482 states and 39845 transitions. [2020-10-13 14:30:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:01,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-13 14:30:01,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:02,055 INFO L225 Difference]: With dead ends: 25482 [2020-10-13 14:30:02,056 INFO L226 Difference]: Without dead ends: 22405 [2020-10-13 14:30:02,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:02,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22405 states. [2020-10-13 14:30:02,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22405 to 6959. [2020-10-13 14:30:02,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6959 states. [2020-10-13 14:30:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 10757 transitions. [2020-10-13 14:30:02,603 INFO L78 Accepts]: Start accepts. Automaton has 6959 states and 10757 transitions. Word has length 117 [2020-10-13 14:30:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:02,603 INFO L479 AbstractCegarLoop]: Abstraction has 6959 states and 10757 transitions. [2020-10-13 14:30:02,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6959 states and 10757 transitions. [2020-10-13 14:30:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 14:30:02,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:02,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:02,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:30:02,611 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:02,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:02,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1829228259, now seen corresponding path program 1 times [2020-10-13 14:30:02,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:02,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074128547] [2020-10-13 14:30:02,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:02,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:02,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:02,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:02,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:02,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:03,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:06,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:06,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:07,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:07,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:07,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 14:30:07,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:30:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:30:07,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:30:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:30:07,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:30:07,997 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:30:07,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:08,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:08,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:08,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:08,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:30:08,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:08,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:08,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:08,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074128547] [2020-10-13 14:30:08,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:08,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:08,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152127643] [2020-10-13 14:30:08,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:08,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:08,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:08,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:08,078 INFO L87 Difference]: Start difference. First operand 6959 states and 10757 transitions. Second operand 7 states. [2020-10-13 14:30:08,390 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:30:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:11,792 INFO L93 Difference]: Finished difference Result 49408 states and 76919 transitions. [2020-10-13 14:30:11,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:11,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-13 14:30:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:11,870 INFO L225 Difference]: With dead ends: 49408 [2020-10-13 14:30:11,871 INFO L226 Difference]: Without dead ends: 43336 [2020-10-13 14:30:11,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:11,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43336 states. [2020-10-13 14:30:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43336 to 13160. [2020-10-13 14:30:12,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13160 states. [2020-10-13 14:30:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13160 states to 13160 states and 20293 transitions. [2020-10-13 14:30:12,731 INFO L78 Accepts]: Start accepts. Automaton has 13160 states and 20293 transitions. Word has length 117 [2020-10-13 14:30:12,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:12,731 INFO L479 AbstractCegarLoop]: Abstraction has 13160 states and 20293 transitions. [2020-10-13 14:30:12,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand 13160 states and 20293 transitions. [2020-10-13 14:30:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 14:30:12,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:12,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:12,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:30:12,746 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:12,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1078829821, now seen corresponding path program 1 times [2020-10-13 14:30:12,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:12,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717157059] [2020-10-13 14:30:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:12,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:13,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:13,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:13,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:15,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:15,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:16,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:16,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:17,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:17,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 14:30:17,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:30:17,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:30:17,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:30:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 14:30:17,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:18,032 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:30:18,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:18,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:18,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:18,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:18,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:30:18,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:18,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:18,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717157059] [2020-10-13 14:30:18,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:18,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:18,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696457494] [2020-10-13 14:30:18,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:18,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:18,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:18,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:18,079 INFO L87 Difference]: Start difference. First operand 13160 states and 20293 transitions. Second operand 7 states. [2020-10-13 14:30:18,323 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:30:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:21,494 INFO L93 Difference]: Finished difference Result 46272 states and 71613 transitions. [2020-10-13 14:30:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:21,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-13 14:30:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:21,556 INFO L225 Difference]: With dead ends: 46272 [2020-10-13 14:30:21,556 INFO L226 Difference]: Without dead ends: 38691 [2020-10-13 14:30:21,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:21,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38691 states. [2020-10-13 14:30:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38691 to 12993. [2020-10-13 14:30:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12993 states. [2020-10-13 14:30:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12993 states to 12993 states and 20031 transitions. [2020-10-13 14:30:23,416 INFO L78 Accepts]: Start accepts. Automaton has 12993 states and 20031 transitions. Word has length 117 [2020-10-13 14:30:23,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:23,417 INFO L479 AbstractCegarLoop]: Abstraction has 12993 states and 20031 transitions. [2020-10-13 14:30:23,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 12993 states and 20031 transitions. [2020-10-13 14:30:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:30:23,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:23,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:23,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:30:23,429 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:23,429 INFO L82 PathProgramCache]: Analyzing trace with hash 402257519, now seen corresponding path program 1 times [2020-10-13 14:30:23,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:23,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4049840] [2020-10-13 14:30:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:23,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:23,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:23,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:24,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:24,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:24,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:28,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:28,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:28,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:28,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:30:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:30:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:30:28,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:30:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 14:30:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:28,707 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:30:28,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:28,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:28,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:28,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:28,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:28,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:30:28,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:28,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:28,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4049840] [2020-10-13 14:30:28,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:28,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:28,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681217197] [2020-10-13 14:30:28,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:28,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:28,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:28,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:28,749 INFO L87 Difference]: Start difference. First operand 12993 states and 20031 transitions. Second operand 7 states. [2020-10-13 14:30:29,001 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:30:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:32,243 INFO L93 Difference]: Finished difference Result 48075 states and 74419 transitions. [2020-10-13 14:30:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:32,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-13 14:30:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:32,287 INFO L225 Difference]: With dead ends: 48075 [2020-10-13 14:30:32,287 INFO L226 Difference]: Without dead ends: 36756 [2020-10-13 14:30:32,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36756 states. [2020-10-13 14:30:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36756 to 12758. [2020-10-13 14:30:33,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12758 states. [2020-10-13 14:30:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12758 states to 12758 states and 19665 transitions. [2020-10-13 14:30:33,487 INFO L78 Accepts]: Start accepts. Automaton has 12758 states and 19665 transitions. Word has length 118 [2020-10-13 14:30:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:33,487 INFO L479 AbstractCegarLoop]: Abstraction has 12758 states and 19665 transitions. [2020-10-13 14:30:33,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 12758 states and 19665 transitions. [2020-10-13 14:30:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:30:33,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:33,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:33,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:30:33,498 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:33,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1732889150, now seen corresponding path program 1 times [2020-10-13 14:30:33,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:33,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41280977] [2020-10-13 14:30:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:33,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:33,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:33,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:34,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:34,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:38,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:38,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:30:38,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:30:38,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:30:38,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:30:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 14:30:38,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:38,779 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:30:38,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:38,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:38,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:38,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:38,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:30:38,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:38,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:38,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:38,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:38,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:38,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41280977] [2020-10-13 14:30:38,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:38,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:38,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941353770] [2020-10-13 14:30:38,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:38,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:38,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:38,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:38,813 INFO L87 Difference]: Start difference. First operand 12758 states and 19665 transitions. Second operand 7 states. [2020-10-13 14:30:39,059 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:30:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:42,461 INFO L93 Difference]: Finished difference Result 47714 states and 73873 transitions. [2020-10-13 14:30:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:42,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-13 14:30:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:42,501 INFO L225 Difference]: With dead ends: 47714 [2020-10-13 14:30:42,501 INFO L226 Difference]: Without dead ends: 36379 [2020-10-13 14:30:42,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:42,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36379 states. [2020-10-13 14:30:43,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36379 to 12507. [2020-10-13 14:30:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12507 states. [2020-10-13 14:30:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12507 states to 12507 states and 19283 transitions. [2020-10-13 14:30:43,583 INFO L78 Accepts]: Start accepts. Automaton has 12507 states and 19283 transitions. Word has length 118 [2020-10-13 14:30:43,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:43,583 INFO L479 AbstractCegarLoop]: Abstraction has 12507 states and 19283 transitions. [2020-10-13 14:30:43,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:43,583 INFO L276 IsEmpty]: Start isEmpty. Operand 12507 states and 19283 transitions. [2020-10-13 14:30:43,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:30:43,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:43,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:43,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:30:43,591 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:43,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:43,592 INFO L82 PathProgramCache]: Analyzing trace with hash 446770255, now seen corresponding path program 1 times [2020-10-13 14:30:43,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:43,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638216584] [2020-10-13 14:30:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:43,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:43,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:44,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:44,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:47,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:47,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:47,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:48,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:48,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:48,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:48,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:48,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:30:48,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:30:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:30:48,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:30:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 14:30:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:48,873 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:30:48,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:48,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:48,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:48,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:48,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:30:48,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:48,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638216584] [2020-10-13 14:30:48,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:48,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:48,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11892819] [2020-10-13 14:30:48,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:48,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:48,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:48,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:48,905 INFO L87 Difference]: Start difference. First operand 12507 states and 19283 transitions. Second operand 7 states. [2020-10-13 14:30:49,151 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:30:53,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:53,499 INFO L93 Difference]: Finished difference Result 55522 states and 86073 transitions. [2020-10-13 14:30:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:53,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-13 14:30:53,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:53,549 INFO L225 Difference]: With dead ends: 55522 [2020-10-13 14:30:53,549 INFO L226 Difference]: Without dead ends: 47925 [2020-10-13 14:30:53,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:53,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47925 states. [2020-10-13 14:30:55,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47925 to 16329. [2020-10-13 14:30:55,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16329 states. [2020-10-13 14:30:55,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16329 states to 16329 states and 25211 transitions. [2020-10-13 14:30:55,043 INFO L78 Accepts]: Start accepts. Automaton has 16329 states and 25211 transitions. Word has length 118 [2020-10-13 14:30:55,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:55,043 INFO L479 AbstractCegarLoop]: Abstraction has 16329 states and 25211 transitions. [2020-10-13 14:30:55,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 16329 states and 25211 transitions. [2020-10-13 14:30:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:30:55,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:55,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:30:55,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:30:55,050 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:55,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:55,050 INFO L82 PathProgramCache]: Analyzing trace with hash 19636254, now seen corresponding path program 1 times [2020-10-13 14:30:55,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:55,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949930321] [2020-10-13 14:30:55,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:55,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:55,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:55,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:59,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:59,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:59,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:00,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:00,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:31:00,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:31:00,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:31:00,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:31:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:31:00,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:00,338 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:31:00,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:00,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:00,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:00,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:00,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:00,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:31:00,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:00,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:00,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:00,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:00,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:00,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949930321] [2020-10-13 14:31:00,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:00,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:00,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793745874] [2020-10-13 14:31:00,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:00,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:00,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:00,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:00,369 INFO L87 Difference]: Start difference. First operand 16329 states and 25211 transitions. Second operand 7 states. [2020-10-13 14:31:00,608 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:31:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:07,578 INFO L93 Difference]: Finished difference Result 78513 states and 121362 transitions. [2020-10-13 14:31:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:07,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-13 14:31:07,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:07,647 INFO L225 Difference]: With dead ends: 78513 [2020-10-13 14:31:07,647 INFO L226 Difference]: Without dead ends: 70556 [2020-10-13 14:31:07,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70556 states. [2020-10-13 14:31:10,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70556 to 25103. [2020-10-13 14:31:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25103 states. [2020-10-13 14:31:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25103 states to 25103 states and 38561 transitions. [2020-10-13 14:31:10,134 INFO L78 Accepts]: Start accepts. Automaton has 25103 states and 38561 transitions. Word has length 118 [2020-10-13 14:31:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:10,135 INFO L479 AbstractCegarLoop]: Abstraction has 25103 states and 38561 transitions. [2020-10-13 14:31:10,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 25103 states and 38561 transitions. [2020-10-13 14:31:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:31:10,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:10,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:10,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:31:10,146 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:10,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1400652883, now seen corresponding path program 1 times [2020-10-13 14:31:10,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:10,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128074226] [2020-10-13 14:31:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:10,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:10,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:10,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:10,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:13,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:13,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:13,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:14,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:14,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:14,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:15,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:15,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:31:15,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:31:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:31:15,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:31:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 14:31:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:15,407 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:31:15,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:15,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:15,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:15,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:31:15,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:15,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:15,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128074226] [2020-10-13 14:31:15,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:15,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:15,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963592980] [2020-10-13 14:31:15,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:15,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:15,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:15,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:15,443 INFO L87 Difference]: Start difference. First operand 25103 states and 38561 transitions. Second operand 7 states. [2020-10-13 14:31:15,696 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:31:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:23,691 INFO L93 Difference]: Finished difference Result 87162 states and 134177 transitions. [2020-10-13 14:31:23,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:23,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-13 14:31:23,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:23,758 INFO L225 Difference]: With dead ends: 87162 [2020-10-13 14:31:23,759 INFO L226 Difference]: Without dead ends: 64212 [2020-10-13 14:31:23,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:23,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64212 states. [2020-10-13 14:31:26,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64212 to 22318. [2020-10-13 14:31:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22318 states. [2020-10-13 14:31:27,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22318 states to 22318 states and 34272 transitions. [2020-10-13 14:31:27,024 INFO L78 Accepts]: Start accepts. Automaton has 22318 states and 34272 transitions. Word has length 118 [2020-10-13 14:31:27,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:27,025 INFO L479 AbstractCegarLoop]: Abstraction has 22318 states and 34272 transitions. [2020-10-13 14:31:27,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:27,025 INFO L276 IsEmpty]: Start isEmpty. Operand 22318 states and 34272 transitions. [2020-10-13 14:31:27,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:31:27,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:27,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:27,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:31:27,034 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:27,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1710712436, now seen corresponding path program 1 times [2020-10-13 14:31:27,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:27,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259136171] [2020-10-13 14:31:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:27,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:27,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:27,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:27,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:27,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:27,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:27,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:27,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:28,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:32,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:32,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:31:32,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:31:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:31:32,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:31:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:31:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 14:31:32,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:32,324 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:31:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:32,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:32,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:32,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:32,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:31:32,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:31:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:31:32,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:32,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259136171] [2020-10-13 14:31:32,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:32,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:31:32,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218957709] [2020-10-13 14:31:32,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:31:32,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:32,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:31:32,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:31:32,384 INFO L87 Difference]: Start difference. First operand 22318 states and 34272 transitions. Second operand 6 states. [2020-10-13 14:31:32,613 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 14:31:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:36,672 INFO L93 Difference]: Finished difference Result 44277 states and 67981 transitions. [2020-10-13 14:31:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:31:36,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-13 14:31:36,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:36,707 INFO L225 Difference]: With dead ends: 44277 [2020-10-13 14:31:36,707 INFO L226 Difference]: Without dead ends: 33166 [2020-10-13 14:31:36,720 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 [2020-10-13 14:31:36,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33166 states. [2020-10-13 14:31:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33166 to 22402. [2020-10-13 14:31:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22402 states. [2020-10-13 14:31:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22402 states to 22402 states and 34192 transitions. [2020-10-13 14:31:39,340 INFO L78 Accepts]: Start accepts. Automaton has 22402 states and 34192 transitions. Word has length 119 [2020-10-13 14:31:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:39,340 INFO L479 AbstractCegarLoop]: Abstraction has 22402 states and 34192 transitions. [2020-10-13 14:31:39,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:31:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand 22402 states and 34192 transitions. [2020-10-13 14:31:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:31:39,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:39,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:39,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:31:39,350 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:39,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:39,350 INFO L82 PathProgramCache]: Analyzing trace with hash 631422149, now seen corresponding path program 1 times [2020-10-13 14:31:39,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:39,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359888221] [2020-10-13 14:31:39,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:39,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:44,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:44,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:31:44,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:31:44,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:31:44,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:44,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:44,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:31:44,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:31:44,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:44,648 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:31:44,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:44,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:44,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:44,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:44,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:31:44,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:44,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:44,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359888221] [2020-10-13 14:31:44,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:44,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:44,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286499065] [2020-10-13 14:31:44,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:44,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:44,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:44,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:44,696 INFO L87 Difference]: Start difference. First operand 22402 states and 34192 transitions. Second operand 7 states. [2020-10-13 14:31:44,939 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:31:55,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:55,724 INFO L93 Difference]: Finished difference Result 96326 states and 147288 transitions. [2020-10-13 14:31:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:55,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-13 14:31:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:55,801 INFO L225 Difference]: With dead ends: 96326 [2020-10-13 14:31:55,801 INFO L226 Difference]: Without dead ends: 76746 [2020-10-13 14:31:55,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:55,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76746 states. [2020-10-13 14:31:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76746 to 22354. [2020-10-13 14:31:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22354 states. [2020-10-13 14:31:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22354 states to 22354 states and 34125 transitions. [2020-10-13 14:31:58,796 INFO L78 Accepts]: Start accepts. Automaton has 22354 states and 34125 transitions. Word has length 119 [2020-10-13 14:31:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:58,796 INFO L479 AbstractCegarLoop]: Abstraction has 22354 states and 34125 transitions. [2020-10-13 14:31:58,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 22354 states and 34125 transitions. [2020-10-13 14:31:58,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:31:58,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:58,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:31:58,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:31:58,806 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:58,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:58,807 INFO L82 PathProgramCache]: Analyzing trace with hash 763105428, now seen corresponding path program 1 times [2020-10-13 14:31:58,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:58,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622020325] [2020-10-13 14:31:58,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:58,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:59,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:01,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:01,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:01,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:02,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:03,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:03,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:03,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:03,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:32:03,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:32:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:32:03,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:32:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 14:32:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:04,079 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:32:04,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:04,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:04,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:04,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:04,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:32:04,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:04,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622020325] [2020-10-13 14:32:04,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:04,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:04,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651643757] [2020-10-13 14:32:04,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:04,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:04,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:04,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:04,111 INFO L87 Difference]: Start difference. First operand 22354 states and 34125 transitions. Second operand 7 states. [2020-10-13 14:32:04,365 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:32:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:16,096 INFO L93 Difference]: Finished difference Result 96148 states and 147013 transitions. [2020-10-13 14:32:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:16,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-13 14:32:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:16,170 INFO L225 Difference]: With dead ends: 96148 [2020-10-13 14:32:16,170 INFO L226 Difference]: Without dead ends: 76532 [2020-10-13 14:32:16,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76532 states. [2020-10-13 14:32:19,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76532 to 22305. [2020-10-13 14:32:19,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22305 states. [2020-10-13 14:32:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22305 states to 22305 states and 34054 transitions. [2020-10-13 14:32:19,286 INFO L78 Accepts]: Start accepts. Automaton has 22305 states and 34054 transitions. Word has length 119 [2020-10-13 14:32:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:19,287 INFO L479 AbstractCegarLoop]: Abstraction has 22305 states and 34054 transitions. [2020-10-13 14:32:19,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 22305 states and 34054 transitions. [2020-10-13 14:32:19,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:32:19,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:19,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:32:19,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:32:19,297 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:19,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:19,297 INFO L82 PathProgramCache]: Analyzing trace with hash 335971427, now seen corresponding path program 1 times [2020-10-13 14:32:19,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:19,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527344398] [2020-10-13 14:32:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:19,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:24,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:24,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:32:24,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:32:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 14:32:24,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:32:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:32:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 14:32:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:24,607 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:32:24,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:24,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:24,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:24,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:24,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:24,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:32:24,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:32:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:32:24,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:24,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527344398] [2020-10-13 14:32:24,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:24,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:32:24,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756269347] [2020-10-13 14:32:24,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:32:24,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:24,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:32:24,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:32:24,650 INFO L87 Difference]: Start difference. First operand 22305 states and 34054 transitions. Second operand 6 states. [2020-10-13 14:32:24,881 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 14:32:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:28,657 INFO L93 Difference]: Finished difference Result 42650 states and 65168 transitions. [2020-10-13 14:32:28,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:32:28,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-13 14:32:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:28,677 INFO L225 Difference]: With dead ends: 42650 [2020-10-13 14:32:28,678 INFO L226 Difference]: Without dead ends: 22190 [2020-10-13 14:32:28,689 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 [2020-10-13 14:32:28,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22190 states. [2020-10-13 14:32:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22190 to 22188. [2020-10-13 14:32:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22188 states. [2020-10-13 14:32:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22188 states to 22188 states and 33889 transitions. [2020-10-13 14:32:31,424 INFO L78 Accepts]: Start accepts. Automaton has 22188 states and 33889 transitions. Word has length 119 [2020-10-13 14:32:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:31,424 INFO L479 AbstractCegarLoop]: Abstraction has 22188 states and 33889 transitions. [2020-10-13 14:32:31,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:32:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 22188 states and 33889 transitions. [2020-10-13 14:32:32,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:32:32,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:32,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:32:32,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:32:32,123 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:32,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:32,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1907456692, now seen corresponding path program 1 times [2020-10-13 14:32:32,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:32,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439382590] [2020-10-13 14:32:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:34,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:34,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:34,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:35,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:35,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:35,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:36,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:36,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:37,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:37,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:37,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:32:37,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:32:37,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:32:37,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:32:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 14:32:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:37,394 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:32:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:37,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:37,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:37,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:37,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:32:37,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:37,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439382590] [2020-10-13 14:32:37,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:37,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:37,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733063406] [2020-10-13 14:32:37,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:37,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:37,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:37,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:37,435 INFO L87 Difference]: Start difference. First operand 22188 states and 33889 transitions. Second operand 7 states. [2020-10-13 14:32:37,684 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:32:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:49,519 INFO L93 Difference]: Finished difference Result 95616 states and 146192 transitions. [2020-10-13 14:32:49,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:49,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-13 14:32:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:49,593 INFO L225 Difference]: With dead ends: 95616 [2020-10-13 14:32:49,593 INFO L226 Difference]: Without dead ends: 75909 [2020-10-13 14:32:49,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75909 states. [2020-10-13 14:32:52,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75909 to 22108. [2020-10-13 14:32:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22108 states. [2020-10-13 14:32:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22108 states to 22108 states and 33766 transitions. [2020-10-13 14:32:52,887 INFO L78 Accepts]: Start accepts. Automaton has 22108 states and 33766 transitions. Word has length 119 [2020-10-13 14:32:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:52,887 INFO L479 AbstractCegarLoop]: Abstraction has 22108 states and 33766 transitions. [2020-10-13 14:32:52,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 22108 states and 33766 transitions. [2020-10-13 14:32:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:32:52,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:52,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:32:52,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:32:52,895 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:52,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:52,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1056878973, now seen corresponding path program 1 times [2020-10-13 14:32:52,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:52,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246234276] [2020-10-13 14:32:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:52,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:54,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:57,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:57,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:32:57,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:32:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:32:57,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:32:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 14:32:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:58,181 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:32:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:58,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:58,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:58,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:58,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:58,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:32:58,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:58,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246234276] [2020-10-13 14:32:58,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:58,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:58,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103474271] [2020-10-13 14:32:58,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:58,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:58,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:58,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:58,215 INFO L87 Difference]: Start difference. First operand 22108 states and 33766 transitions. Second operand 7 states. [2020-10-13 14:32:58,466 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 182