/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.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:21:28,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:21:28,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:21:28,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:21:28,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:21:28,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:21:28,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:21:28,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:21:28,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:21:28,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:21:28,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:21:28,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:21:28,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:21:28,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:21:28,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:21:28,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:21:28,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:21:28,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:21:28,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:21:28,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:21:28,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:21:28,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:21:28,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:21:28,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:21:28,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:21:28,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:21:28,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:21:28,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:21:28,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:21:28,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:21:28,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:21:28,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:21:28,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:21:28,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:21:28,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:21:28,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:21:28,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:21:28,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:21:28,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:21:28,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:21:28,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:21:28,539 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 14:21:28,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:21:28,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:21:28,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:21:28,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:21:28,576 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:21:28,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:21:28,576 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:21:28,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:21:28,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:21:28,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:21:28,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:21:28,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:21:28,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:21:28,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:21:28,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:21:28,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:21:28,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:21:28,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:21:28,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:21:28,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:21:28,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:21:28,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:21:28,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:21:28,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:21:28,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:21:28,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:21:28,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:21:28,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:21:28,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:21:28,583 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 14:21:28,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:21:28,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:21:28,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:21:28,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:21:28,895 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:21:28,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-13 14:21:28,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9854b2ce4/806f0f1671884e0aaf32ba8ba467cc8e/FLAG6e9878022 [2020-10-13 14:21:29,551 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:21:29,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-13 14:21:29,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9854b2ce4/806f0f1671884e0aaf32ba8ba467cc8e/FLAG6e9878022 [2020-10-13 14:21:29,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9854b2ce4/806f0f1671884e0aaf32ba8ba467cc8e [2020-10-13 14:21:29,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:21:29,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:21:29,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:21:29,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:21:29,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:21:29,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:21:29" (1/1) ... [2020-10-13 14:21:29,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c05dbbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:21:29, skipping insertion in model container [2020-10-13 14:21:29,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:21:29" (1/1) ... [2020-10-13 14:21:29,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:21:29,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:21:30,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:21:30,558 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:21:30,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:21:30,981 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:21:30,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:21:30 WrapperNode [2020-10-13 14:21:30,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:21:30,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:21:30,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:21:30,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:21:30,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:21:30" (1/1) ... [2020-10-13 14:21:31,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:21:30" (1/1) ... [2020-10-13 14:21:31,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:21:30" (1/1) ... [2020-10-13 14:21:31,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:21:30" (1/1) ... [2020-10-13 14:21:31,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:21:30" (1/1) ... [2020-10-13 14:21:31,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:21:30" (1/1) ... [2020-10-13 14:21:31,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:21:30" (1/1) ... [2020-10-13 14:21:31,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:21:31,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:21:31,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:21:31,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:21:31,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:21:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:21:31,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:21:31,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:21:31,218 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:21:31,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:21:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:21:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:21:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:21:31,220 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:21:31,220 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:21:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:21:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:21:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:21:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:21:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:21:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:21:31,222 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:21:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:21:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:21:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:21:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:21:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:21:31,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:21:31,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:21:32,484 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:21:32,485 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:21:32,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:21:32 BoogieIcfgContainer [2020-10-13 14:21:32,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:21:32,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:21:32,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:21:32,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:21:32,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:21:29" (1/3) ... [2020-10-13 14:21:32,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73391fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:21:32, skipping insertion in model container [2020-10-13 14:21:32,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:21:30" (2/3) ... [2020-10-13 14:21:32,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73391fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:21:32, skipping insertion in model container [2020-10-13 14:21:32,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:21:32" (3/3) ... [2020-10-13 14:21:32,501 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-13 14:21:32,511 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:21:32,519 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:21:32,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:21:32,558 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:21:32,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:21:32,559 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:21:32,559 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:21:32,559 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:21:32,559 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:21:32,559 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:21:32,559 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:21:32,584 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states. [2020-10-13 14:21:32,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 14:21:32,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:32,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:32,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:32,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:32,614 INFO L82 PathProgramCache]: Analyzing trace with hash -339565854, now seen corresponding path program 1 times [2020-10-13 14:21:32,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:32,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729383720] [2020-10-13 14:21:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:33,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:37,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:37,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:37,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 14:21:37,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:21:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 14:21:37,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:21:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 14:21:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:21:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:21:38,318 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:21:38,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:38,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:38,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:38,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:38,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:21:38,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:38,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:38,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:38,385 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 14:21:38,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729383720] [2020-10-13 14:21:38,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:38,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:21:38,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875066320] [2020-10-13 14:21:38,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:21:38,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:38,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:21:38,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:21:38,414 INFO L87 Difference]: Start difference. First operand 395 states. Second operand 5 states. [2020-10-13 14:21:40,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:40,184 INFO L93 Difference]: Finished difference Result 748 states and 1218 transitions. [2020-10-13 14:21:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:21:40,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-13 14:21:40,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:40,203 INFO L225 Difference]: With dead ends: 748 [2020-10-13 14:21:40,203 INFO L226 Difference]: Without dead ends: 391 [2020-10-13 14:21:40,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:21:40,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-13 14:21:40,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-10-13 14:21:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-13 14:21:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 596 transitions. [2020-10-13 14:21:40,283 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 596 transitions. Word has length 151 [2020-10-13 14:21:40,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:40,284 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 596 transitions. [2020-10-13 14:21:40,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:21:40,284 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 596 transitions. [2020-10-13 14:21:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-13 14:21:40,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:40,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:40,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:21:40,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:40,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:40,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1766241270, now seen corresponding path program 1 times [2020-10-13 14:21:40,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:40,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126094892] [2020-10-13 14:21:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:40,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:40,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:40,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:40,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:41,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:45,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 14:21:45,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:21:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 14:21:45,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:21:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 14:21:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:21:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:21:45,730 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:21:45,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:45,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:45,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:45,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:45,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:45,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:21:45,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:45,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:45,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:45,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:21:45,795 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 14:21:45,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126094892] [2020-10-13 14:21:45,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:45,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:21:45,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307766452] [2020-10-13 14:21:45,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:21:45,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:45,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:21:45,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:21:45,800 INFO L87 Difference]: Start difference. First operand 391 states and 596 transitions. Second operand 5 states. [2020-10-13 14:21:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:47,332 INFO L93 Difference]: Finished difference Result 668 states and 1037 transitions. [2020-10-13 14:21:47,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:21:47,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-13 14:21:47,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:47,340 INFO L225 Difference]: With dead ends: 668 [2020-10-13 14:21:47,340 INFO L226 Difference]: Without dead ends: 391 [2020-10-13 14:21:47,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:21:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-13 14:21:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-10-13 14:21:47,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-13 14:21:47,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 593 transitions. [2020-10-13 14:21:47,398 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 593 transitions. Word has length 190 [2020-10-13 14:21:47,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:47,399 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 593 transitions. [2020-10-13 14:21:47,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:21:47,399 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 593 transitions. [2020-10-13 14:21:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-13 14:21:47,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:47,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:47,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:21:47,404 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:47,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:47,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1759380359, now seen corresponding path program 1 times [2020-10-13 14:21:47,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:47,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865431887] [2020-10-13 14:21:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:47,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:47,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:47,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:47,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:47,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:48,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:49,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:49,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:52,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:52,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-13 14:21:52,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:21:52,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:21:52,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:21:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 14:21:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:21:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:52,719 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:21:52,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:52,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:52,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:52,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:52,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:21:52,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:52,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:52,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:21:52,815 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 14:21:52,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865431887] [2020-10-13 14:21:52,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:52,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:21:52,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281828104] [2020-10-13 14:21:52,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:21:52,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:52,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:21:52,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:21:52,824 INFO L87 Difference]: Start difference. First operand 391 states and 593 transitions. Second operand 4 states. [2020-10-13 14:21:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:55,519 INFO L93 Difference]: Finished difference Result 922 states and 1433 transitions. [2020-10-13 14:21:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:21:55,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2020-10-13 14:21:55,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:55,525 INFO L225 Difference]: With dead ends: 922 [2020-10-13 14:21:55,526 INFO L226 Difference]: Without dead ends: 645 [2020-10-13 14:21:55,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:21:55,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-10-13 14:21:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 643. [2020-10-13 14:21:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-13 14:21:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 982 transitions. [2020-10-13 14:21:55,553 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 982 transitions. Word has length 192 [2020-10-13 14:21:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:55,554 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 982 transitions. [2020-10-13 14:21:55,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:21:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 982 transitions. [2020-10-13 14:21:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-13 14:21:55,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:55,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:55,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:21:55,558 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:55,559 INFO L82 PathProgramCache]: Analyzing trace with hash -846739848, now seen corresponding path program 1 times [2020-10-13 14:21:55,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:55,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303516426] [2020-10-13 14:21:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:55,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:55,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:56,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:56,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:56,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:56,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:00,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:00,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 14:22:00,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:22:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:22:00,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:22:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 14:22:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:22:00,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:22:00,934 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:22:00,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:22:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:00,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:00,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:22:00,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:22:00,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:22:00,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:22:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:22:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:22:00,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:01,027 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 14:22:01,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303516426] [2020-10-13 14:22:01,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:22:01,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:22:01,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816742110] [2020-10-13 14:22:01,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:22:01,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:22:01,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:22:01,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:22:01,030 INFO L87 Difference]: Start difference. First operand 643 states and 982 transitions. Second operand 4 states. [2020-10-13 14:22:01,292 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-13 14:22:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:22:03,065 INFO L93 Difference]: Finished difference Result 1459 states and 2259 transitions. [2020-10-13 14:22:03,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:22:03,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2020-10-13 14:22:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:22:03,073 INFO L225 Difference]: With dead ends: 1459 [2020-10-13 14:22:03,073 INFO L226 Difference]: Without dead ends: 1000 [2020-10-13 14:22:03,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:22:03,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2020-10-13 14:22:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 966. [2020-10-13 14:22:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-10-13 14:22:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1479 transitions. [2020-10-13 14:22:03,116 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1479 transitions. Word has length 193 [2020-10-13 14:22:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:22:03,117 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1479 transitions. [2020-10-13 14:22:03,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:22:03,117 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1479 transitions. [2020-10-13 14:22:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-13 14:22:03,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:22:03,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:03,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:22:03,122 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:22:03,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:22:03,123 INFO L82 PathProgramCache]: Analyzing trace with hash 622746365, now seen corresponding path program 1 times [2020-10-13 14:22:03,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:22:03,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492123659] [2020-10-13 14:22:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:22:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:03,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:03,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:03,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:03,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:03,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:03,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:03,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:04,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:08,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:08,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 14:22:08,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:22:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:22:08,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:22:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 14:22:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:22:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:08,400 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:22:08,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:22:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:08,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:08,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:08,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:22:08,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:22:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:22:08,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:22:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:22:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:22:08,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:08,473 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 14:22:08,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492123659] [2020-10-13 14:22:08,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:22:08,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:22:08,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562910079] [2020-10-13 14:22:08,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:22:08,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:22:08,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:22:08,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:22:08,476 INFO L87 Difference]: Start difference. First operand 966 states and 1479 transitions. Second operand 4 states. [2020-10-13 14:22:08,676 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-13 14:22:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:22:10,474 INFO L93 Difference]: Finished difference Result 2504 states and 3871 transitions. [2020-10-13 14:22:10,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:22:10,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2020-10-13 14:22:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:22:10,486 INFO L225 Difference]: With dead ends: 2504 [2020-10-13 14:22:10,487 INFO L226 Difference]: Without dead ends: 1786 [2020-10-13 14:22:10,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:22:10,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2020-10-13 14:22:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1736. [2020-10-13 14:22:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1736 states. [2020-10-13 14:22:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2661 transitions. [2020-10-13 14:22:10,586 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2661 transitions. Word has length 195 [2020-10-13 14:22:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:22:10,588 INFO L479 AbstractCegarLoop]: Abstraction has 1736 states and 2661 transitions. [2020-10-13 14:22:10,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:22:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2661 transitions. [2020-10-13 14:22:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-13 14:22:10,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:22:10,596 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:10,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:22:10,596 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:22:10,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:22:10,597 INFO L82 PathProgramCache]: Analyzing trace with hash 756078961, now seen corresponding path program 1 times [2020-10-13 14:22:10,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:22:10,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016652957] [2020-10-13 14:22:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:22:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:10,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:10,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:10,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:13,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:15,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:15,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 14:22:15,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:22:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:22:15,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:22:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 14:22:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:22:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:15,901 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:22:15,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:22:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:15,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:15,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:15,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:22:15,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:22:15,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:22:15,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:22:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:22:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:22:15,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:22:16,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016652957] [2020-10-13 14:22:16,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:22:16,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:22:16,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304210346] [2020-10-13 14:22:16,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:22:16,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:22:16,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:22:16,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:22:16,016 INFO L87 Difference]: Start difference. First operand 1736 states and 2661 transitions. Second operand 4 states. [2020-10-13 14:22:16,214 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-13 14:22:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:22:18,484 INFO L93 Difference]: Finished difference Result 4696 states and 7235 transitions. [2020-10-13 14:22:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:22:18,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2020-10-13 14:22:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:22:18,502 INFO L225 Difference]: With dead ends: 4696 [2020-10-13 14:22:18,502 INFO L226 Difference]: Without dead ends: 3298 [2020-10-13 14:22:18,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:22:18,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2020-10-13 14:22:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 3200. [2020-10-13 14:22:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2020-10-13 14:22:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 4889 transitions. [2020-10-13 14:22:18,645 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 4889 transitions. Word has length 197 [2020-10-13 14:22:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:22:18,645 INFO L479 AbstractCegarLoop]: Abstraction has 3200 states and 4889 transitions. [2020-10-13 14:22:18,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:22:18,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 4889 transitions. [2020-10-13 14:22:18,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-13 14:22:18,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:22:18,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:18,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:22:18,657 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:22:18,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:22:18,657 INFO L82 PathProgramCache]: Analyzing trace with hash -956059459, now seen corresponding path program 1 times [2020-10-13 14:22:18,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:22:18,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809350629] [2020-10-13 14:22:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:22:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:18,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:18,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:18,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:18,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:18,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:19,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:19,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:19,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:23,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:23,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:23,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-13 14:22:23,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:22:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:22:23,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:22:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 14:22:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:22:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:23,941 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:22:23,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:22:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:23,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:23,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:23,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:22:23,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:22:23,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:22:23,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:22:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:22:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:22:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:24,022 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 14:22:24,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809350629] [2020-10-13 14:22:24,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:22:24,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:22:24,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332822535] [2020-10-13 14:22:24,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:22:24,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:22:24,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:22:24,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:22:24,024 INFO L87 Difference]: Start difference. First operand 3200 states and 4889 transitions. Second operand 4 states. [2020-10-13 14:22:24,233 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-13 14:22:26,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:22:26,530 INFO L93 Difference]: Finished difference Result 8468 states and 12955 transitions. [2020-10-13 14:22:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:22:26,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-10-13 14:22:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:22:26,559 INFO L225 Difference]: With dead ends: 8468 [2020-10-13 14:22:26,559 INFO L226 Difference]: Without dead ends: 6010 [2020-10-13 14:22:26,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:22:26,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6010 states. [2020-10-13 14:22:26,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6010 to 5816. [2020-10-13 14:22:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5816 states. [2020-10-13 14:22:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 8817 transitions. [2020-10-13 14:22:26,833 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 8817 transitions. Word has length 199 [2020-10-13 14:22:26,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:22:26,834 INFO L479 AbstractCegarLoop]: Abstraction has 5816 states and 8817 transitions. [2020-10-13 14:22:26,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:22:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 8817 transitions. [2020-10-13 14:22:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 14:22:26,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:22:26,849 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:26,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:22:26,850 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:22:26,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:22:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2008541652, now seen corresponding path program 1 times [2020-10-13 14:22:26,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:22:26,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043360416] [2020-10-13 14:22:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:22:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:26,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:26,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:26,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:27,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:27,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:27,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:27,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:27,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:31,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:31,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:31,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:31,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-13 14:22:31,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:22:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:22:31,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:22:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 14:22:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:22:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:32,101 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:22:32,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:22:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:32,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:32,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:32,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:22:32,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:22:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:22:32,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:22:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:22:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:22:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:32,147 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 14:22:32,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043360416] [2020-10-13 14:22:32,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:22:32,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:22:32,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251918370] [2020-10-13 14:22:32,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:22:32,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:22:32,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:22:32,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:22:32,150 INFO L87 Difference]: Start difference. First operand 5816 states and 8817 transitions. Second operand 4 states. [2020-10-13 14:22:32,347 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:22:34,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:22:34,863 INFO L93 Difference]: Finished difference Result 15094 states and 22909 transitions. [2020-10-13 14:22:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:22:34,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-10-13 14:22:34,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:22:34,906 INFO L225 Difference]: With dead ends: 15094 [2020-10-13 14:22:34,907 INFO L226 Difference]: Without dead ends: 10332 [2020-10-13 14:22:34,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:22:34,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10332 states. [2020-10-13 14:22:35,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10332 to 10330. [2020-10-13 14:22:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10330 states. [2020-10-13 14:22:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10330 states to 10330 states and 15515 transitions. [2020-10-13 14:22:35,434 INFO L78 Accepts]: Start accepts. Automaton has 10330 states and 15515 transitions. Word has length 201 [2020-10-13 14:22:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:22:35,435 INFO L479 AbstractCegarLoop]: Abstraction has 10330 states and 15515 transitions. [2020-10-13 14:22:35,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:22:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 10330 states and 15515 transitions. [2020-10-13 14:22:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 14:22:35,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:22:35,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:35,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:22:35,462 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:22:35,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:22:35,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1924041558, now seen corresponding path program 1 times [2020-10-13 14:22:35,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:22:35,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262161554] [2020-10-13 14:22:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:22:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:35,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:35,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:35,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:35,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:35,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:35,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:35,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:36,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:40,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:40,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-13 14:22:40,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:22:40,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:22:40,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:40,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:22:40,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:22:40,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:22:40,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:40,703 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:22:40,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:22:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:40,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:40,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:22:40,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:22:40,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:22:40,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:22:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:22:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:22:40,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:40,752 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 14:22:40,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262161554] [2020-10-13 14:22:40,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:22:40,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:22:40,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958145698] [2020-10-13 14:22:40,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:22:40,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:22:40,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:22:40,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:22:40,754 INFO L87 Difference]: Start difference. First operand 10330 states and 15515 transitions. Second operand 4 states. [2020-10-13 14:22:40,954 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-13 14:22:42,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:22:42,661 INFO L93 Difference]: Finished difference Result 18133 states and 27312 transitions. [2020-10-13 14:22:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:22:42,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-10-13 14:22:42,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:22:42,692 INFO L225 Difference]: With dead ends: 18133 [2020-10-13 14:22:42,692 INFO L226 Difference]: Without dead ends: 9711 [2020-10-13 14:22:42,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:22:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9711 states. [2020-10-13 14:22:43,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9711 to 9709. [2020-10-13 14:22:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9709 states. [2020-10-13 14:22:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9709 states to 9709 states and 14608 transitions. [2020-10-13 14:22:43,083 INFO L78 Accepts]: Start accepts. Automaton has 9709 states and 14608 transitions. Word has length 201 [2020-10-13 14:22:43,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:22:43,083 INFO L479 AbstractCegarLoop]: Abstraction has 9709 states and 14608 transitions. [2020-10-13 14:22:43,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:22:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 9709 states and 14608 transitions. [2020-10-13 14:22:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 14:22:43,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:22:43,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:43,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:22:43,104 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:22:43,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:22:43,104 INFO L82 PathProgramCache]: Analyzing trace with hash 982777669, now seen corresponding path program 1 times [2020-10-13 14:22:43,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:22:43,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066109707] [2020-10-13 14:22:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:22:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:43,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:43,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:46,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:47,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:47,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:48,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:48,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-13 14:22:48,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:22:48,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:22:48,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:22:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 14:22:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:22:48,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:22:48,364 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:22:48,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:22:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:48,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:48,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:48,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:22:48,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:22:48,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:22:48,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:22:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:22:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:22:48,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:48,415 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 14:22:48,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066109707] [2020-10-13 14:22:48,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:22:48,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:22:48,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400295901] [2020-10-13 14:22:48,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:22:48,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:22:48,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:22:48,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:22:48,418 INFO L87 Difference]: Start difference. First operand 9709 states and 14608 transitions. Second operand 4 states. [2020-10-13 14:22:50,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:22:50,114 INFO L93 Difference]: Finished difference Result 14337 states and 21626 transitions. [2020-10-13 14:22:50,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:22:50,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 202 [2020-10-13 14:22:50,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:22:50,129 INFO L225 Difference]: With dead ends: 14337 [2020-10-13 14:22:50,130 INFO L226 Difference]: Without dead ends: 6536 [2020-10-13 14:22:50,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:22:50,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6536 states. [2020-10-13 14:22:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6536 to 6534. [2020-10-13 14:22:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6534 states. [2020-10-13 14:22:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6534 states to 6534 states and 9762 transitions. [2020-10-13 14:22:50,377 INFO L78 Accepts]: Start accepts. Automaton has 6534 states and 9762 transitions. Word has length 202 [2020-10-13 14:22:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:22:50,377 INFO L479 AbstractCegarLoop]: Abstraction has 6534 states and 9762 transitions. [2020-10-13 14:22:50,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:22:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 6534 states and 9762 transitions. [2020-10-13 14:22:50,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 14:22:50,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:22:50,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:50,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:22:50,389 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:22:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:22:50,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1966595892, now seen corresponding path program 1 times [2020-10-13 14:22:50,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:22:50,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139678670] [2020-10-13 14:22:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:22:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:50,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:50,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:50,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:50,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:50,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:50,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:50,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:50,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:51,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:51,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:51,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:52,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:55,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:55,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-13 14:22:55,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:22:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:22:55,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:22:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:22:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:22:55,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:55,623 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:22:55,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:22:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:55,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:55,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:22:55,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:22:55,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:22:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:22:55,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:22:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:22:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:22:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:22:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:22:55,666 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 14:22:55,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139678670] [2020-10-13 14:22:55,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:22:55,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:22:55,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025826081] [2020-10-13 14:22:55,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:22:55,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:22:55,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:22:55,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:22:55,668 INFO L87 Difference]: Start difference. First operand 6534 states and 9762 transitions. Second operand 4 states. [2020-10-13 14:22:55,887 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-13 14:22:57,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:22:57,543 INFO L93 Difference]: Finished difference Result 11980 states and 17947 transitions. [2020-10-13 14:22:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:22:57,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 202 [2020-10-13 14:22:57,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:22:57,560 INFO L225 Difference]: With dead ends: 11980 [2020-10-13 14:22:57,560 INFO L226 Difference]: Without dead ends: 6296 [2020-10-13 14:22:57,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:22:57,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2020-10-13 14:22:57,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 6294. [2020-10-13 14:22:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6294 states. [2020-10-13 14:22:57,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 9418 transitions. [2020-10-13 14:22:57,963 INFO L78 Accepts]: Start accepts. Automaton has 6294 states and 9418 transitions. Word has length 202 [2020-10-13 14:22:57,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:22:57,964 INFO L479 AbstractCegarLoop]: Abstraction has 6294 states and 9418 transitions. [2020-10-13 14:22:57,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:22:57,964 INFO L276 IsEmpty]: Start isEmpty. Operand 6294 states and 9418 transitions. [2020-10-13 14:22:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-13 14:22:57,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:22:57,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:57,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:22:57,974 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:22:57,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:22:57,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1138428907, now seen corresponding path program 1 times [2020-10-13 14:22:57,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:22:57,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465097119] [2020-10-13 14:22:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:22:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:22:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:58,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:59,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:59,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:59,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:59,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:22:59,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:03,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:03,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 14:23:03,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:23:03,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:23:03,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:23:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 14:23:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:23:03,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:03,216 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:23:03,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:23:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:03,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:03,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:03,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:23:03,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:23:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:23:03,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:23:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:23:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:23:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:03,259 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 14:23:03,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465097119] [2020-10-13 14:23:03,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:23:03,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:23:03,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972564317] [2020-10-13 14:23:03,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:23:03,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:23:03,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:23:03,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:23:03,261 INFO L87 Difference]: Start difference. First operand 6294 states and 9418 transitions. Second operand 4 states. [2020-10-13 14:23:03,455 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:23:05,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:23:05,707 INFO L93 Difference]: Finished difference Result 13462 states and 20203 transitions. [2020-10-13 14:23:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:23:05,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 203 [2020-10-13 14:23:05,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:23:05,724 INFO L225 Difference]: With dead ends: 13462 [2020-10-13 14:23:05,725 INFO L226 Difference]: Without dead ends: 8928 [2020-10-13 14:23:05,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:23:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8928 states. [2020-10-13 14:23:06,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8928 to 8926. [2020-10-13 14:23:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8926 states. [2020-10-13 14:23:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8926 states to 8926 states and 13349 transitions. [2020-10-13 14:23:06,166 INFO L78 Accepts]: Start accepts. Automaton has 8926 states and 13349 transitions. Word has length 203 [2020-10-13 14:23:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:23:06,167 INFO L479 AbstractCegarLoop]: Abstraction has 8926 states and 13349 transitions. [2020-10-13 14:23:06,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:23:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 8926 states and 13349 transitions. [2020-10-13 14:23:06,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-13 14:23:06,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:06,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:06,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:23:06,178 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:06,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:06,179 INFO L82 PathProgramCache]: Analyzing trace with hash -192798860, now seen corresponding path program 1 times [2020-10-13 14:23:06,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:06,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156981588] [2020-10-13 14:23:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:06,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:06,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:06,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:06,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:06,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:07,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:07,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:07,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:09,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:11,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:11,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 14:23:11,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 14:23:11,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:23:11,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:23:11,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 14:23:11,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:23:11,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:11,424 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:23:11,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:23:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:11,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:11,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:23:11,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:23:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:23:11,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:23:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:23:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:23:11,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:11,468 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 14:23:11,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156981588] [2020-10-13 14:23:11,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:23:11,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:23:11,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780612795] [2020-10-13 14:23:11,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:23:11,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:23:11,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:23:11,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:23:11,471 INFO L87 Difference]: Start difference. First operand 8926 states and 13349 transitions. Second operand 4 states. [2020-10-13 14:23:12,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:23:12,994 INFO L93 Difference]: Finished difference Result 12502 states and 18725 transitions. [2020-10-13 14:23:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:23:12,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2020-10-13 14:23:12,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:23:13,001 INFO L225 Difference]: With dead ends: 12502 [2020-10-13 14:23:13,001 INFO L226 Difference]: Without dead ends: 4638 [2020-10-13 14:23:13,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:23:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4638 states. [2020-10-13 14:23:13,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 4636. [2020-10-13 14:23:13,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4636 states. [2020-10-13 14:23:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 6873 transitions. [2020-10-13 14:23:13,202 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 6873 transitions. Word has length 205 [2020-10-13 14:23:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:23:13,202 INFO L479 AbstractCegarLoop]: Abstraction has 4636 states and 6873 transitions. [2020-10-13 14:23:13,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:23:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 6873 transitions. [2020-10-13 14:23:13,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-13 14:23:13,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:13,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:13,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:23:13,207 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:13,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:13,208 INFO L82 PathProgramCache]: Analyzing trace with hash -294875945, now seen corresponding path program 1 times [2020-10-13 14:23:13,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:13,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174580364] [2020-10-13 14:23:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:13,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:14,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:18,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:18,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 14:23:18,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:23:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:23:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:23:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:23:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:23:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:18,451 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:23:18,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:23:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:18,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:18,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:18,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:23:18,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:23:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:23:18,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:23:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:23:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:23:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:18,494 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 14:23:18,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174580364] [2020-10-13 14:23:18,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:23:18,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:23:18,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794877553] [2020-10-13 14:23:18,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:23:18,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:23:18,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:23:18,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:23:18,497 INFO L87 Difference]: Start difference. First operand 4636 states and 6873 transitions. Second operand 4 states. [2020-10-13 14:23:18,721 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-13 14:23:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:23:20,259 INFO L93 Difference]: Finished difference Result 8704 states and 12939 transitions. [2020-10-13 14:23:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:23:20,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2020-10-13 14:23:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:23:20,264 INFO L225 Difference]: With dead ends: 8704 [2020-10-13 14:23:20,264 INFO L226 Difference]: Without dead ends: 4536 [2020-10-13 14:23:20,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:23:20,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2020-10-13 14:23:20,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 4534. [2020-10-13 14:23:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4534 states. [2020-10-13 14:23:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 6729 transitions. [2020-10-13 14:23:20,418 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 6729 transitions. Word has length 205 [2020-10-13 14:23:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:23:20,418 INFO L479 AbstractCegarLoop]: Abstraction has 4534 states and 6729 transitions. [2020-10-13 14:23:20,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:23:20,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 6729 transitions. [2020-10-13 14:23:20,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 14:23:20,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:20,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:20,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:23:20,423 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:20,424 INFO L82 PathProgramCache]: Analyzing trace with hash -147071117, now seen corresponding path program 1 times [2020-10-13 14:23:20,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:20,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127818878] [2020-10-13 14:23:20,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:20,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:20,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:20,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:20,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:20,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:20,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:21,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:22,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:25,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:25,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-13 14:23:25,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:23:25,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:23:25,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:23:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 14:23:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:23:25,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:25,689 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:23:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:23:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:25,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:25,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:25,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:23:25,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:23:25,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:23:25,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:25,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:23:25,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:23:25,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:23:25,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:25,733 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 14:23:25,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127818878] [2020-10-13 14:23:25,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:23:25,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:23:25,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302461901] [2020-10-13 14:23:25,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:23:25,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:23:25,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:23:25,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:23:25,735 INFO L87 Difference]: Start difference. First operand 4534 states and 6729 transitions. Second operand 4 states. [2020-10-13 14:23:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:23:27,131 INFO L93 Difference]: Finished difference Result 6288 states and 9335 transitions. [2020-10-13 14:23:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:23:27,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2020-10-13 14:23:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:23:27,136 INFO L225 Difference]: With dead ends: 6288 [2020-10-13 14:23:27,136 INFO L226 Difference]: Without dead ends: 2222 [2020-10-13 14:23:27,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:23:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2020-10-13 14:23:27,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2166. [2020-10-13 14:23:27,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2166 states. [2020-10-13 14:23:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 3181 transitions. [2020-10-13 14:23:27,236 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 3181 transitions. Word has length 206 [2020-10-13 14:23:27,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:23:27,237 INFO L479 AbstractCegarLoop]: Abstraction has 2166 states and 3181 transitions. [2020-10-13 14:23:27,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:23:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 3181 transitions. [2020-10-13 14:23:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 14:23:27,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:27,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:27,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:23:27,240 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:27,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1988216492, now seen corresponding path program 1 times [2020-10-13 14:23:27,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:27,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934630867] [2020-10-13 14:23:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:27,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:27,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:27,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:27,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:27,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:27,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:27,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:28,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:30,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:30,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:30,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:32,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:32,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-13 14:23:32,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:23:32,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:23:32,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:23:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 14:23:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:23:32,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:32,503 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:23:32,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:23:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:32,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:32,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:32,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:23:32,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:23:32,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:23:32,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:32,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:23:32,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:23:32,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:23:32,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:32,549 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 14:23:32,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934630867] [2020-10-13 14:23:32,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:23:32,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:23:32,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650018688] [2020-10-13 14:23:32,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:23:32,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:23:32,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:23:32,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:23:32,551 INFO L87 Difference]: Start difference. First operand 2166 states and 3181 transitions. Second operand 4 states. [2020-10-13 14:23:32,769 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 14:23:34,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:23:34,244 INFO L93 Difference]: Finished difference Result 5834 states and 8555 transitions. [2020-10-13 14:23:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:23:34,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2020-10-13 14:23:34,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:23:34,249 INFO L225 Difference]: With dead ends: 5834 [2020-10-13 14:23:34,249 INFO L226 Difference]: Without dead ends: 4042 [2020-10-13 14:23:34,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:23:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4042 states. [2020-10-13 14:23:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4042 to 3872. [2020-10-13 14:23:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3872 states. [2020-10-13 14:23:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 5613 transitions. [2020-10-13 14:23:34,393 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 5613 transitions. Word has length 206 [2020-10-13 14:23:34,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:23:34,393 INFO L479 AbstractCegarLoop]: Abstraction has 3872 states and 5613 transitions. [2020-10-13 14:23:34,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:23:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 5613 transitions. [2020-10-13 14:23:34,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-13 14:23:34,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:34,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:34,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:23:34,399 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:34,400 INFO L82 PathProgramCache]: Analyzing trace with hash 33550764, now seen corresponding path program 1 times [2020-10-13 14:23:34,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:34,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925250701] [2020-10-13 14:23:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:34,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:34,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:34,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:35,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:39,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:39,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 14:23:39,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:23:39,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:23:39,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:23:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:23:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:23:39,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:39,631 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:23:39,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:23:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:39,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:39,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:23:39,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:23:39,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:23:39,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:23:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:23:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:23:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:39,676 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 14:23:39,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925250701] [2020-10-13 14:23:39,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:23:39,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:23:39,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075812426] [2020-10-13 14:23:39,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:23:39,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:23:39,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:23:39,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:23:39,678 INFO L87 Difference]: Start difference. First operand 3872 states and 5613 transitions. Second operand 4 states. [2020-10-13 14:23:39,881 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-13 14:23:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:23:41,613 INFO L93 Difference]: Finished difference Result 7086 states and 10315 transitions. [2020-10-13 14:23:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:23:41,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-10-13 14:23:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:23:41,617 INFO L225 Difference]: With dead ends: 7086 [2020-10-13 14:23:41,617 INFO L226 Difference]: Without dead ends: 3748 [2020-10-13 14:23:41,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:23:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2020-10-13 14:23:41,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3746. [2020-10-13 14:23:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3746 states. [2020-10-13 14:23:41,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 5437 transitions. [2020-10-13 14:23:41,758 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 5437 transitions. Word has length 208 [2020-10-13 14:23:41,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:23:41,759 INFO L479 AbstractCegarLoop]: Abstraction has 3746 states and 5437 transitions. [2020-10-13 14:23:41,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:23:41,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 5437 transitions. [2020-10-13 14:23:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-13 14:23:41,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:41,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:41,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:23:41,763 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:41,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:41,763 INFO L82 PathProgramCache]: Analyzing trace with hash -2135562619, now seen corresponding path program 1 times [2020-10-13 14:23:41,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:41,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288502837] [2020-10-13 14:23:41,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:41,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:41,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:41,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:41,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:42,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:42,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:42,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:43,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:43,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:44,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:46,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:46,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 14:23:46,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:23:46,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:23:46,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:23:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-13 14:23:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:23:46,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:47,013 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:23:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:23:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:47,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:47,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:47,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:23:47,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:23:47,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:23:47,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:47,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:23:47,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:23:47,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:23:47,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:47,067 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 14:23:47,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288502837] [2020-10-13 14:23:47,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:23:47,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:23:47,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168585808] [2020-10-13 14:23:47,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:23:47,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:23:47,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:23:47,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:23:47,069 INFO L87 Difference]: Start difference. First operand 3746 states and 5437 transitions. Second operand 4 states. [2020-10-13 14:23:47,282 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-13 14:23:48,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:23:48,936 INFO L93 Difference]: Finished difference Result 10426 states and 15071 transitions. [2020-10-13 14:23:48,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:23:48,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2020-10-13 14:23:48,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:23:48,944 INFO L225 Difference]: With dead ends: 10426 [2020-10-13 14:23:48,944 INFO L226 Difference]: Without dead ends: 7060 [2020-10-13 14:23:48,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:23:48,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7060 states. [2020-10-13 14:23:49,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7060 to 6738. [2020-10-13 14:23:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6738 states. [2020-10-13 14:23:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 9613 transitions. [2020-10-13 14:23:49,323 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 9613 transitions. Word has length 209 [2020-10-13 14:23:49,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:23:49,323 INFO L479 AbstractCegarLoop]: Abstraction has 6738 states and 9613 transitions. [2020-10-13 14:23:49,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:23:49,323 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 9613 transitions. [2020-10-13 14:23:49,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 14:23:49,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:49,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:49,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:23:49,329 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:49,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:49,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1534835811, now seen corresponding path program 1 times [2020-10-13 14:23:49,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:49,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015810478] [2020-10-13 14:23:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:49,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:52,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:52,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:54,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:54,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-13 14:23:54,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:23:54,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:23:54,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:23:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:23:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 14:23:54,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:54,565 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:23:54,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:23:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:54,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:54,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:23:54,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:23:54,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:23:54,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:54,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:23:54,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:23:54,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:23:54,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:54,610 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 14:23:54,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015810478] [2020-10-13 14:23:54,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:23:54,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:23:54,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177216684] [2020-10-13 14:23:54,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:23:54,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:23:54,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:23:54,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:23:54,612 INFO L87 Difference]: Start difference. First operand 6738 states and 9613 transitions. Second operand 4 states. [2020-10-13 14:23:54,825 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-13 14:23:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:23:56,465 INFO L93 Difference]: Finished difference Result 11931 states and 17048 transitions. [2020-10-13 14:23:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:23:56,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 211 [2020-10-13 14:23:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:23:56,473 INFO L225 Difference]: With dead ends: 11931 [2020-10-13 14:23:56,473 INFO L226 Difference]: Without dead ends: 6420 [2020-10-13 14:23:56,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:23:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6420 states. [2020-10-13 14:23:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6420 to 6418. [2020-10-13 14:23:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6418 states. [2020-10-13 14:23:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6418 states to 6418 states and 9145 transitions. [2020-10-13 14:23:56,764 INFO L78 Accepts]: Start accepts. Automaton has 6418 states and 9145 transitions. Word has length 211 [2020-10-13 14:23:56,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:23:56,765 INFO L479 AbstractCegarLoop]: Abstraction has 6418 states and 9145 transitions. [2020-10-13 14:23:56,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:23:56,765 INFO L276 IsEmpty]: Start isEmpty. Operand 6418 states and 9145 transitions. [2020-10-13 14:23:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-13 14:23:56,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:56,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:56,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:23:56,770 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:56,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:56,770 INFO L82 PathProgramCache]: Analyzing trace with hash 775396748, now seen corresponding path program 1 times [2020-10-13 14:23:56,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:56,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710807710] [2020-10-13 14:23:56,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:56,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:56,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:56,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:57,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:57,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:57,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:58,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:58,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:01,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:01,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:01,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 14:24:01,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:24:01,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 14:24:01,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:24:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 14:24:01,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 14:24:01,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:02,033 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:24:02,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:02,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:02,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:02,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:02,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:24:02,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:24:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:24:02,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:02,076 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 14:24:02,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710807710] [2020-10-13 14:24:02,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:02,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:24:02,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485251463] [2020-10-13 14:24:02,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:24:02,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:02,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:24:02,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:24:02,079 INFO L87 Difference]: Start difference. First operand 6418 states and 9145 transitions. Second operand 4 states. [2020-10-13 14:24:02,300 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-13 14:24:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:04,099 INFO L93 Difference]: Finished difference Result 11782 states and 16841 transitions. [2020-10-13 14:24:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:24:04,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2020-10-13 14:24:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:04,106 INFO L225 Difference]: With dead ends: 11782 [2020-10-13 14:24:04,106 INFO L226 Difference]: Without dead ends: 6290 [2020-10-13 14:24:04,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:24:04,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6290 states. [2020-10-13 14:24:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6290 to 6288. [2020-10-13 14:24:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6288 states. [2020-10-13 14:24:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6288 states to 6288 states and 8957 transitions. [2020-10-13 14:24:04,391 INFO L78 Accepts]: Start accepts. Automaton has 6288 states and 8957 transitions. Word has length 212 [2020-10-13 14:24:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:04,391 INFO L479 AbstractCegarLoop]: Abstraction has 6288 states and 8957 transitions. [2020-10-13 14:24:04,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:24:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 6288 states and 8957 transitions. [2020-10-13 14:24:04,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-13 14:24:04,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:04,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:24:04,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:24:04,397 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:04,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:04,397 INFO L82 PathProgramCache]: Analyzing trace with hash 666725086, now seen corresponding path program 1 times [2020-10-13 14:24:04,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:04,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968445739] [2020-10-13 14:24:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:04,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:05,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:06,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:09,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:09,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 14:24:09,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:24:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:24:09,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:24:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:24:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:24:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:09,665 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:24:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:09,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:09,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:09,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:09,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:24:09,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:24:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:24:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:09,728 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 14:24:09,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968445739] [2020-10-13 14:24:09,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:09,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:24:09,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555942571] [2020-10-13 14:24:09,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:24:09,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:09,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:24:09,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:24:09,730 INFO L87 Difference]: Start difference. First operand 6288 states and 8957 transitions. Second operand 6 states. [2020-10-13 14:24:09,955 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:24:12,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:12,090 INFO L93 Difference]: Finished difference Result 18621 states and 26524 transitions. [2020-10-13 14:24:12,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:24:12,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-13 14:24:12,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:12,104 INFO L225 Difference]: With dead ends: 18621 [2020-10-13 14:24:12,104 INFO L226 Difference]: Without dead ends: 12385 [2020-10-13 14:24:12,112 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 14:24:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12385 states. [2020-10-13 14:24:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12385 to 12383. [2020-10-13 14:24:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12383 states. [2020-10-13 14:24:12,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12383 states to 12383 states and 17539 transitions. [2020-10-13 14:24:12,736 INFO L78 Accepts]: Start accepts. Automaton has 12383 states and 17539 transitions. Word has length 213 [2020-10-13 14:24:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:12,737 INFO L479 AbstractCegarLoop]: Abstraction has 12383 states and 17539 transitions. [2020-10-13 14:24:12,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:24:12,737 INFO L276 IsEmpty]: Start isEmpty. Operand 12383 states and 17539 transitions. [2020-10-13 14:24:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-13 14:24:12,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:12,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:24:12,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:24:12,751 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:12,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:12,751 INFO L82 PathProgramCache]: Analyzing trace with hash 798186659, now seen corresponding path program 1 times [2020-10-13 14:24:12,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:12,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796582235] [2020-10-13 14:24:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:12,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:12,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:12,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:12,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:13,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:13,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:15,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:15,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:15,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:17,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:17,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 14:24:17,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:24:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:24:17,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:24:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:24:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 14:24:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:18,009 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:24:18,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:18,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:18,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:18,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:24:18,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:24:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:24:18,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:24:18,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796582235] [2020-10-13 14:24:18,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:18,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:24:18,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994466186] [2020-10-13 14:24:18,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:24:18,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:18,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:24:18,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:24:18,054 INFO L87 Difference]: Start difference. First operand 12383 states and 17539 transitions. Second operand 7 states. [2020-10-13 14:24:18,274 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-13 14:24:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:24,857 INFO L93 Difference]: Finished difference Result 93672 states and 132529 transitions. [2020-10-13 14:24:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:24:24,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-13 14:24:24,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:24,944 INFO L225 Difference]: With dead ends: 93672 [2020-10-13 14:24:24,944 INFO L226 Difference]: Without dead ends: 81371 [2020-10-13 14:24:24,970 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 14:24:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81371 states. [2020-10-13 14:24:28,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81371 to 36485. [2020-10-13 14:24:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36485 states. [2020-10-13 14:24:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36485 states to 36485 states and 51349 transitions. [2020-10-13 14:24:28,791 INFO L78 Accepts]: Start accepts. Automaton has 36485 states and 51349 transitions. Word has length 213 [2020-10-13 14:24:28,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:28,791 INFO L479 AbstractCegarLoop]: Abstraction has 36485 states and 51349 transitions. [2020-10-13 14:24:28,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:24:28,791 INFO L276 IsEmpty]: Start isEmpty. Operand 36485 states and 51349 transitions. [2020-10-13 14:24:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-13 14:24:28,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:28,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:24:28,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:24:28,828 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:28,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:28,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1194237635, now seen corresponding path program 1 times [2020-10-13 14:24:28,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:28,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760608433] [2020-10-13 14:24:28,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:28,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:28,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:28,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:29,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:29,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:29,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:31,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:33,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:33,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 14:24:33,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:24:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:24:33,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:24:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:24:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 14:24:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:34,098 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:24:34,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:34,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:34,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:34,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:34,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:34,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:24:34,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:24:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:24:34,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:34,157 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 14:24:34,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760608433] [2020-10-13 14:24:34,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:34,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:24:34,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856530579] [2020-10-13 14:24:34,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:24:34,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:34,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:24:34,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:24:34,159 INFO L87 Difference]: Start difference. First operand 36485 states and 51349 transitions. Second operand 6 states. [2020-10-13 14:24:34,387 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:24:40,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:40,912 INFO L93 Difference]: Finished difference Result 108651 states and 152667 transitions. [2020-10-13 14:24:40,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:24:40,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-13 14:24:40,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:40,981 INFO L225 Difference]: With dead ends: 108651 [2020-10-13 14:24:40,981 INFO L226 Difference]: Without dead ends: 72224 [2020-10-13 14:24:41,016 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 14:24:41,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72224 states. [2020-10-13 14:24:47,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72224 to 72222. [2020-10-13 14:24:47,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72222 states. [2020-10-13 14:24:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72222 states to 72222 states and 100897 transitions. [2020-10-13 14:24:47,358 INFO L78 Accepts]: Start accepts. Automaton has 72222 states and 100897 transitions. Word has length 213 [2020-10-13 14:24:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:47,358 INFO L479 AbstractCegarLoop]: Abstraction has 72222 states and 100897 transitions. [2020-10-13 14:24:47,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:24:47,359 INFO L276 IsEmpty]: Start isEmpty. Operand 72222 states and 100897 transitions. [2020-10-13 14:24:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-13 14:24:47,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:47,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:24:47,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:24:47,432 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:47,433 INFO L82 PathProgramCache]: Analyzing trace with hash -2051829533, now seen corresponding path program 1 times [2020-10-13 14:24:47,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:47,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344493136] [2020-10-13 14:24:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:47,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:47,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:47,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:47,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:47,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:47,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:48,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:48,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:48,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:48,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:51,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:52,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:52,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 14:24:52,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:24:52,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:24:52,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:24:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:24:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 14:24:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:52,720 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:24:52,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:52,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:52,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:52,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:52,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:24:52,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:52,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:24:52,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:24:52,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:52,779 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 14:24:52,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344493136] [2020-10-13 14:24:52,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:52,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:24:52,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154078500] [2020-10-13 14:24:52,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:24:52,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:52,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:24:52,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:24:52,781 INFO L87 Difference]: Start difference. First operand 72222 states and 100897 transitions. Second operand 6 states. [2020-10-13 14:24:53,012 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:25:03,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:03,025 INFO L93 Difference]: Finished difference Result 160811 states and 224052 transitions. [2020-10-13 14:25:03,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:25:03,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-13 14:25:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:03,144 INFO L225 Difference]: With dead ends: 160811 [2020-10-13 14:25:03,144 INFO L226 Difference]: Without dead ends: 116623 [2020-10-13 14:25:03,182 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 14:25:03,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116623 states.